philips hp optigo service manual

11 Introduction

This Service Manual provides the information needed to service the OptiGo M2430A Ultrasound System. The manual is intended for Philips technical personnel trained in the safe and proper servicing of the M2430A.

Overview

This chapter contains general information that you should become familiar with before servicing the M2430A. Detailed information about controls, operation, and capabilities of the instrument can be found in the Users Guide (M2430-95000) that was shipped with the product. We recommend you review the Users Guide before servicing the device. This Service Manual assumes you are familiar with the controls and with basic operations.

Manual Conventions

This manual uses the following text conventions:

NOTE Notes contain additional information on servicing this product.

CAUTION Caution statements describe conditions or actions that can result in damage to the equipment or loss of data.

WARNING Warning statements describe conditions or actions that can result in personal injury or loss of life.

Programs Text that appears on a display is in a different type from the rest of the manual.

Enter key Keys are named and shown with a graphic representing how they appear on the keyboard.

2IntroductionProduct Overview

Product Overview

The M2430A is a cardiac assessment tool. The device provides an extension to the physicians clinical assessment and physical examination at the point of care. This device enhances patient care by enabling the physician to:

Quickly obtain 2 dimensional cardiac ultrasound images Assess and measure anatomic structures of the heart

Assess intracardiac blood flow patterns using color flow doppler

The M2430A consists of the following components:

Notebook sized ultrasound device

Phased array 2.5 MHz transducer

2 Batteries

External Battery Charger

Ultrasound gel in refillable bottle

Shoulder strap

User Documentation

AC Adapter (optional)This product has the following user features:

2 D imaging mode

Color flow imaging mode

Patient ID Feature

Linear Measurement capability

Image storage on CompactFlash card

Images are stored on the CompactFlash card as JPEG files. These files can be accessed, viewed, stored, and printed using a variety of commercially available image management programs that support the JPEG format.

Installation

The M2430A does not require installation. The Users Guide describes the setup required for placing the device into service and localization options.

3IntroductionLocalization Setup Mode

Localization Setup Mode

The M2430As local language parameters must be set before its first use. This operation need only be done once. The language parameters are set by opening three setup screens and making choices in them.

To set the ultrasound system for local parameters, enter localization mode:

1 Press the Depth Down key and Near Field Down key simultaneously.

2 Scroll through the three localization screens using the Enter key .

3 Highlight desired fields in each screen by using the touch pad.

4 Press the Enter key in each of the three screens to exit from localization mode. After pressing the Enter key at the third screen, your settings are saved to memory.

You can exit localization mode at any point by pressing the Power key , but settings are not saved.

Replacing the System PCB or backup battery may require resetting localization.

Preventive Maintenance

The user should perform preventive maintenance and periodic operational checks. Both topics are covered in the Care of Device and Transducer section of the Users Guide.

4IntroductionSafety Considerations

Safety Considerations

General Information The M2430A device shuts off if it malfunctions. If this happens, contact your OptiGo

service representative for instructions. Only qualified personnel can service the device.

Failure to observe the following warnings can affect the safety of both patient and operator:

Operate the M2430A only when the ambient temperature is between 0 and 40 degrees Centigrade.

Do not remove the device covers unless you are a trained service technician. If using AC power, avoid electric shock by using only the supplied power cord.

Connect the power cord to a properly grounded (three hole/mains) wall outlet. Do not operate the system in the presence of flammable vapors. The system is not waterproof or protected from liquids. To avoid electromagnetic interference and electric shock, do not use the stand-alone

battery charger in the immediate patient vicinity.

Repetitive ultrasound scanning has been associated with carpal tunnel syndrome and related musculoskeletal problems. To reduce chance of such operator injury: Use a relaxed grip on the transducer Keep joints in optimum position Maintain a balanced posture when scanning

No negative reactions to the transducer materials or OptiGo accessories have been discovered by either factory-performed material testing or many years of use with patients. OptiGo transducers and ultrasound systems contain no natural latex rubber.

Do not attempt to scan a patient during defibrillation.

Only qualified personnel should service or use this product.

Temperature Limits If the OptiGo system runs for more than 40 minutes in non-frozen mode, its bottom

may become warmer than allowed under IEC 60601-1 patient contact temperature limits. Do not allow the bottom of the unit to contact the patient if the unit has been run for more than 40 minutes in non-frozen mode.


Acoustic Output We recommend using the lowest ultrasound exposure that produces acceptable

information. No harmful effects have been demonstrated for the ultrasound frequency, intensity and exposure time used in cardiac assessment. See the appendices in the Users Guide for more acoustic power information.

The displayed symbol [TIS/B]A denotes the Thermal Index for both soft tissue and bone at focus exposures. This is possible because the calculations are identical for both indices in all supported modes. This display activates when in color mode.

More information about the concept of ALARA (As Low As Reasonably Achievable) and possible ultrasound bio-effects is found in the Medical Ultrasound Safety brochure developed by the American Institute of Ultrasound in Medicine.

Infection ControlInfection control is an increasingly important issue in Health Care. The following articles provide good summaries:

Design, Testing, and Labeling of Reusable Medical Devices for Reprocessing in Health Care Facilities - A guide for Manufacturers, AAMI Publishing Company 1995.

Disinfection, Sterilization, and Preservation, by Seymous S. Block. Febiger, Philadelphia, 1991.

The M2430A transducer is considered a non-critical device because it is used on intact skin. The risk of an external transducer spreading infection is very low; usually only a general cleaning or low-level disinfection is required.

The transducer, cable and M2430A system can be cleaned with the following procedure:

1 Clean with gauze pad and soap and water

2 Follow with any of these products:

70% isopropyl alcohol (see note below) 3% solution of chlorine bleach (5.25% sodium hypochlorite) in water 3% solution of hydrogen peroxide in water

Sporiciden wipes, or Sporicidin sprayed on a gauze pad

3 Dry the equipment to prevent corrosion

NOTE We recommend limited use of isopropyl alcohol to clean transducers. Wipe only the distal tip of the transducer to one inch from the strain relief/housing joint with isopropyl alcohol. Use of isopropyl alcohol on other portions of the transducer may cause damage. An alternative to alcohol is Sporicidin. For information on this product, check the Sporicidin web site at this URL: www.sporicidin.com. Sporicidin is available in two acceptable forms: as towelettes and as a disinfectant solution.

In the event that you believe contamination of the device or transducer is possible:

Consult and follow your facilitys policy regarding use of medical devices in the presence of infectious disease.

Cover the transducer with a sheath.


In the event that you believe the probe is contaminated, clean and disinfect it as follows:

1 Unplug the transducer from the system.

2 Wash the transducer head, up to the first 50 cm of the cable, with soap and water to remove any protein buildup.

3 Disinfect the transducer, up to the first 50 cm of the cable, with a 2.4% to 2.6% glutaraldehyde solution.

CAUTION Do not rinse or immerse the connector or the portion of the cable near the connector.

Do not use other disinfectants. Also, avoid transducer contact with strong solvents such as acetone, freon, and other industrial cleansers.

Do not soak the transducer for extended periods of time, such as over-night.

Follow the recommendations of the disinfectant manufacturer.

4 Remove the transducer from the disinfectant and thoroughly rinse with sterile water according to the disinfectants instructions for use.

5 Examine the transducer for any residual infectious material. If any is present, remove it and disinfect the transducer again.

If the transducer is used in an application that requires sterility, follow the procedure above and use the sterile probe sheath.

NOTE Some individuals are allergic to natural latex, which is present in some probe sheaths. Please see the Food and Drug Administrations Medical Alert on latex products (FDA 1991). The M2430A system and transducer do not contain latex.

CAUTION Never sterilize the transducer with techniques such as autoclave, ultraviolet, gamma radiation, gas, steam, or heat sterilization. Severe damage will result. Avoidable transducer damage is not covered by the warranty or service contract.

7IntroductionGlossary

Disinfectant solutionsUse only a high-level disinfecting solution that has been registered with the EPA and cleared by the FDA. Several such solutions are listed below, and can be used with the 21420 transducer for high-level disinfection.

Cidex Activated Dialdehyde solution (2.4%) Cidex Formula 7 Long-Life Activated Dialdehyde solution (2.5%) Metricide Activated Dialdehyde solution (2.6%) Metricide 28 day Long-Life Activated Dialdehyde solution (2.5%) Procide 14 N.S. (2.4%) Omnicide Long Life Activated Dialdehyde solution (2.4%) Wavicide -01 (2.5%)

Glossary

Some of the technical terms used in this manual are defined below.

Artifact In imaging, a feature of the image that is not part of the thing being scanned; usually artifacts are generated by the imaging system or by electromagnetic interference from another source. Artifacts are generally undesirable.

Binary A base-2 number system, using 0 and 1

Bus A physical communication channel; wires or circuits

CompactFlash card

A removable data storage device; CompactFlash is a trademark of the CompactFlash Association (http://www.compactflash.org/)

Doppler In ultrasound, used to detect and measure motion. Waves from one object to another object are spaced differently, depending on whether the objects are moving toward or away from each other.

ECG Electrocardiogram

Elements In ultrasound imaging, the components that send and receive ultrasound signals

Front End In an ultrasound device, the imaging circuitry that handles transmission and reception

Gain Amplitude; increasing a gain makes the signal stronger

Hexadecimal A base-16 number system that uses letters A through F to represent the (base-10) numbers 10 through 16. The base-10 number 13 in is 000D in hex.

8IntroductionGlossary

Icon A graphic element or symbol; used to indicate an object or process. Some icons are used instead of text, as headings; others are interactive, and initiate a process when activated.

JPEG Joint Photographic Expert Group; an image compression format

LCD Liquid Crystal Display; the OptiGo imaging screen is an LCD

LED Light-Emitting Diode; several LEDs are used on the OptiGo system to indicate various conditions

Lens The surface of the transducer that contacts the patient; ultrasound impulses are transmitted and received through the lens

Localization Configuring a device or program for a specific location; the OptiGo system is localized for the customers use

PCB Printed Circuit Board; in this manual, PCB refers to the assembly that includes the bare board and components permanently attached to it

Phantom In ultrasound, a device that simulates the bodys acoustic properties; used to test or calibrate ultrasound equipment

Polarity In batteries or electric circuits, refers to positive and negative; batteries have a positive and a negative terminal.

POST Power On Self Test; a series of tests that the OptiGo system performs when it is turned on. See Power On Self Test (POST) on page 12 for more information.

RFI Radio Frequency Interference; electromagnetic signals that can interfere with operation of electronic devices

Saline Salt water

SM Bus System Management Bus standard that defines how the Smart Battery communicates with other devices(http://www.smbus.org/specs/smb10.pdf)

Smart Battery A battery that conforms to the Smart Battery Data Set specification; the specification defines how this kind of battery reports various conditions as an electronic signal(http://www.sbs-forum.org/specs/index.html)

Standoff A mechanical part that connects two items while maintaining a fixed distance between them. Often has a male screw thread on one end, and a female thread in the other end.

Transducer The part of an ultrasound system that contacts patients; sometimes called a "probe"

Ultrasound High-frequency sound waves used to detect variations in the density of body structures

92 Performance Verification and Safety Tests

Overview

This chapter describes the tests and inspections required to verify performance of the M2430A Ultrasound System. All tests can be done using the AC power at the test site. There is no need to test at different voltages. The major sections of this chapter are as follows:

Test Equipment (page 9) Standard Testing (page 10) Battery Capacity Test (page 19) Test Matrix (page 20) System Utilities & Diagnostics (page 21) The Support Screen (page 22) LEDs (page 24) System Messages (page 25)

Test Equipment

Table 1 lists equipment required for the Performance Verification tests. The second column gives specifications for commercially available products needed. The test procedures call out test equipment as needed.

Table 1 Test Equipment

Test Equipment SpecificationsPhantom (optional) Part no. ATS M2430-1000 or ATS Model 539System software on CompactFlash card Part no. M2430-10010

External battery charger Refer to Table 15 on page 72 for part numbers

Phased array transducer Model no. 21420A (new) or 21420-68000 (replacement)

OptiGo AC adapter kit Refer to Table 15 on page 72 for part numbersLithium Ion battery Part no. 1420-0868Blank CompactFlash card Any Type I

10

Performance Verification and Safety TestsStandard Testing

Standard Testing

The Performance Verification tests in this chapter verify proper operation of the M2430A after repair. Perform these tests after any repair that involved opening the M2430s outer case.

The OptiGo system being tested is referred to here as the Unit under Test, or UUT. If a test indicates problems, refer to Chapter 3, Troubleshooting and Repair, to identify and correct the cause of the problems.

Safety The M2430A system is classified as Internally Powered.

The AC adapter is classified as Class 1; it provides double insulation from mains power. The AC adapter is safety-tested by its manufacturer; it is not field repairable.

No safety testing of the ultrasound system or transducer is required after repairs.

Standard Testing ChecklistThe procedures that make up the standard test are listed below.

Test Setup (page 10) System Inspection (page 11) Software Check (page 11) Power OFF and Fan Test (page 11) Power On Self Test (POST) (page 12) Extended Self Test (EST) (page 12) SM Bus Battery and AC Adapter Communications Test (page 13) Function Tests (page 13) Imaging Test (page 16)

Test Setup1 Place the UUT on a bench with the transducer connector facing you.

2 Install a lithium ion battery in the UUT.

3 Connect a transducer to the UUT.

4 Open the cover of the UUT.

11


System Inspection1 Inspect the entire system for:

Worn or damaged cables and power cords

Damaged AC adapter

Loose or missing hardware

Damaged or corroded connector pins and battery contacts

Damaged battery

Damaged shoulder strap

2 Inspect the transducer for:

Damaged cable and connector

Damaged lens

Damaged cable strain relief

Damaged or corroded connector pins

Damaged latch mechanism

Software CheckOpen the Support screen (see The Support Screen on page 22) and verify that the installed software is the latest version that is compatible with the hardware.

Power OFF and Fan Test1 With the unit running, press the Power key .

The unit should power down. If it does not, the keyboard or System PCB may be faulty.

2 Press the Power key again.The POST LED blinks twice, then remains lit. This indicates that the system passed the Power On Self Test. If the POST LED does not light, or if the default imaging screen does not appear, there is a problem with the UUT.

3 Verify that the fan is running by listening at the slots in the left side of the unit. If the fan is not running, correct the problem now. Refer to the Troubleshooting table section Mechanical on page 38.

4 Close the cover of the UUT.The unit should power down.

5 Open the cover of the UUT, and verify that it is powered down.

12


Power On Self Test (POST)The Power On Self Test (POST) runs every time the system is powered up. If the system passes the POST test, the POST LED on the keyboard lights, and the system is ready for use. If the system fails the POST test, the POST LED does not stay lit, and the system does not operate.

Extended Self Test (EST)The M2430A can perform an extensive set of self tests called EST (Extended Self Test). EST tests parts of the system not tested during POST, including status checks on transmit, receive, and transducer elements. Results are displayed in the EST column of the Support screen.

To activate EST:

1 Press the Power key .The POST LED lights, and the default imaging screen appears.

2 Press the Depth Up key and Near Field Gain Up key at the same time.The Support screen appears.

3 Inspect the EST error log to see if there are any errors in the log. Compare these codes against the EST Error Code Table in Chapter 3, Troubleshooting and Repair to determine if troubleshooting is required.

NOTE Always review the System Log before running the diagnostic tests. If new errors are created during the diagnostic tests, they may overwrite the existing codes and erase valuable clues to a problem.

4 Press the Erase key .

All error codes are cleared.

5 Press Caliper key .

EST begins. During the test, a Test Status indicator appears below , and displays numbers that increment from 01 to n.

6 When an X appears on the transducer icon in the center of the Support screen, unplug the transducer from the UUT.The EST resumes; when it is done, the Test Status indicator reads 00.

7 If any errors are displayed in the EST, RT, or POST columns, refer to Chapter 3, Troubleshooting and Repair, to identify and correct the cause of the errors.

8 If the first and second lines of the Channel/Element Status box are not all zeros, refer to Channel/Element status codes on page 43.

13


9 When the EST is done, press the Power key .The UUT shuts down.

SM Bus Battery and AC Adapter Communications Test1 Connect the transducer to the UUT.

2 Connect the AC adapter to the UUT and an AC power source.The adapters green Power LED lights.

3 Press the Power key .The UUT starts up.

4 Watch the battery icon at the bottom of the imaging screen.The icon should disappear within 30 seconds. Do not continue the test until it does.

5 Verify that the AC adapter LED is lit.The AC adapter LED is above the Overall Sector Gain keys on the keyboard.

6 Disconnect the AC adapter from the AC power source.The battery icon should appear at the bottom of the imaging screen within 20 seconds. If it does not, the SM bus is faulty. Refer to the Battery section on page 34 of the Troubleshooting table.

7 Verify that the AC adapter LED on the keyboard is dark.

8 Connect the AC adapter to an AC power source.The AC adapter LED should light, and the battery icon should disappear within 30 seconds.

Function Tests1 Press the Power key .

2 Test the depth functions.

a. Press the Depth Up key .

The Depth indicator should increase. The depth markers on the right side of the image should increase in number.

Example: If the depth is set to 10 cm, there should be nine depth markers. If the depth is increased to 16 cm, there should be fifteen markers.

b. Press the Depth Down key .The Depth indicator should decrease. The depth markers on the right side of the image should decrease in number.

14


3 Test the freeze functions.

a. Press the Freeze key .

The ultrasound image freezes, and the Freeze bar indicator appears at the top right corner of the imaging screen.

b. Press the Left Scroll key and Right Scroll key to scroll through the loop.The marker on the Freeze Bar indicator should move back and forth.

c. Press the Freeze key .The system returns to normal imaging mode.

4 Test the color functions.

a. Press the Color key .

The system enters color imaging mode, and the Color sector box, Color scale, and Color Gain bar indicator appear.

b. Verify that the color scale is correct. Colors on the scale should be arranged as in Figure 1.

Figure 1 Color Scale

c. Press the Color Sector Up key .The color sector box should move up.

d. Press the Color Sector Down key .The color sector box should move down.

e. Press the Color Sector Left key .The color sector box should move left.

Yellow

Orange

RedBlackDark Blue

Light Blue

15


f. Press the Color Sector Right key .The color sector box should move right.

g. Press the Color Gain Up key .The color sector should brighten, and the Color Gain indicator should increase.

h. Press the Color Gain Down key .The color sector should darken, and the Color Gain indicator should decrease.

i. Press the Color key .The system enters black-and-white imaging mode.

5 Test the measurement functions.

a. Set the imaging depth to 10 cm.

b. Press the Caliper key and use the touch pad to move the X cursor to the second tick mark from the top at the right of the sector.The measurement should read 1.9 to 2.1 cm.

c. Press the Caliper key and use the touch pad to move the X cursor to the large tick mark at the right of the sector.The measurement should read 2.9 to 3.1 cm.

d. Press the Erase key .The X cursors and measurement should disappear.

6 Test the Date/Time functions.

a. Press the Date/Time key .

The system displays the Date/Time window.

b. Confirm that the touch pad controls the highlighting position on the Date/Time win-dow.

c. Press a key (not the Date/Time key).The system enters normal imaging mode.

7 Test the Save functions.

a. Insert a CompactFlash card in the flash card slot.

If the file icon that appears at the bottom right corner of the imaging screen is accompanied by number 0, either erase the card using a PC with a CompactFlash card reader, or replace the card with an empty one.

16


b. In normal imaging mode, press the Save Image key .The screen should display the Image Save icon, and no error messages should display.

c. Remove the CompactFlash card.

8 Test the Patient ID function.

a. Press the Patient ID key .

The system displays the Patient ID window.

b. Verify that the touch pad controls the highlighting position in the Patient ID window.

c. Press a key (not the Patient ID key).The system closes the Patient ID window.

Imaging TestThis test requires an ATS phantom, Model 2430-1000 or Model 539.

NOTE If the test is performed at a customer site and no phantom is available, ask the customer to check for anomalies by scanning a patient.

1 Pour about 1/8 inch (3 mm) of water in the top of the phantom.

2 Place the transducer head midway between the front and back of the phantom.

When using the Model 2430-1000 phantom, place the transducer above the three line targets grouped vertically at the left side of the phantom. See Figure 2.

When using the Model 539 phantom, place the transducer above the 16 line targets grouped vertically at the left side of the phantom.

3 Hold the transducer perpendicular to the top of the phantom, with the long axis of the transducer head parallel to the long axis of the phantom top, as in Figure 2.

17


Figure 2 Using the Phantom

4 Test the Sector Gain controls.

a. Press the Overall Sector Gain Up key .

The image gets brighter and the Overall Gain indicator moves up.

b. Press the Overall Sector Gain Down key .The image gets darker and the Overall Gain indicator moves down.

c. Set the overall sector gain as low as possible.

d. Press the Near Field Gain Up key .The upper half of the image gets brighter, and the Near Field Gain indicator moves up.

e. Press the Near Field Gain Down key .The upper half of the image gets darker, and the Near Field Gain indicator moves down.

f. Set the overall sector gain and near field gain to their maximums.

5 Check the image for artifacts.See Artifacts on page 39.

a. Set the depth to 16 cm.

There should be no dark areas or artifact lines in the image.

b. Set the near field gain and overall gain to the center of their ranges.

18


c. Compare the 2D image to the reference image for the phantom.Refer to Figure 3 if using the Model 2430-1000 phantom, or Figure 4 on page 19 if using the Model 539 phantom. There should be no artifact (line or pattern not in the reference image) in the 2D image.

d. Set the near field gain and overall gain to their maximums, while watching for the appearance of artifacts in the image.

Figure 3 Model 2430-1000 Phantom Reference Image

19

Performance Verification and Safety TestsBattery Capacity Test

Figure 4 Model 539 Phantom Reference Image

Battery Capacity Test

Perform the Battery Capacity test only if the batterys performance is less than expected.

1 Use the external charger to calibrate the battery.Refer to the Users Guide for the calibration procedure. Calibration may take 12 hours.

2 Install the battery in the OptiGo system.


The battery status codes at the lower right of the Support screen report the batterys condition, including its charge capacity. Refer to Battery Status Codes on page 44 for the meanings of the codes.

20

Performance Verification and Safety TestsTest Matrix

Test Matrix

Table 2 describes how Authorized service technicians should record test results on service records. All these tests must be performed after any procedure that includes opening the OptiGo case.

Table 2 Test Matrix

Test Block Test Description Passing ResultsPass and

Fail Entries

VVisual

inspection1. Inspect system (page 11)2. Check software (page 11)

1. No significant damage2. Software is the latest for

the hardwareV:P (pass)V:F (fail)

FFunctional

test

1. Power Off and fan test (page 11)

2. SM Bus battery & AC adapter test (page 13)

3. Function test (page 13)

1. As described in test procedure



F:P (pass)F:F (fail)

XSelf tests

1. POST (page 12)2. Extended Self test (page 12)

1. POST LED lights; no errors under POST on Support screen

2. No errors under EST on Support screen

X:P (pass)X:F (fail)

AArtifact test Imaging test (page 16) No artifacts in image

A:P (pass)A:F (fail)

21

Performance Verification and Safety TestsSystem Utilities & Diagnostics

System Utilities & Diagnostics

Figure 5 shows the relationships of elements of the system utilities and diagnostics. Except for hardware-driven LEDs, the diagnostic functions are performed by the system software.

Figure 5 System Utilities and Diagnostics Block Diagram

SYSTEM UTILITIES AND DIAGNOSTICS

LocalizationScreen

Power On Sequence

Upgrade Flash CardDetection POST Test Hardware Initialization Software Boot andInitialization

Run-TimeError Checking

SupportScreen

Batterys Internal Registers

Extended Self Test(EST)

Channel/ElementTest System ExtendedTesting

Indicates controlrelationshipIndicates data flow

22

Performance Verification and Safety TestsThe Support Screen

The Support Screen

The Support screen displays valuable information about system conditions and test results. This section describes how to open the Support screen and its elements.

Opening the Support Screen To open the Support Screen:

1 Turn on the system power


To exit the Support screen, press any key (other than the Caliper, Depth Up, Near Field Gain, or Erase keys). You cannot exit the Support screen while tests are running.

Support Screen ElementsFigure 6 shows the elements of the Support screen. Table 3 on page 23 describes these elements.

Figure 6 Support Screen Elements

SW: 1.0.0 HW: 21 UCC: 1026

EST RT POST

00

0001 332233890001 33223389

0001 332233890001 33223389

0001 332233880023 23443444

0001 332233890001 33223389

0000 0000 00000000 0000 00000000 0000 0000

0088 000600C0 ????5078 00000000 0000

A B

C

D

E

F

G

HI

JK

03/20/2001 14:19:51

23

Performance Verification and Safety TestsThe Support Screen

Table 3 Support Screen Elements

Tag Description

A Software revision

B Hardware revision

CRuntime error codes

Logged as a result of software error detection during normal use of the system.

D

POST error codesLogged as a result of software error detection during POST test that takes place during system power-up. POST test errors prevent the system turning on. Some of these errors may not log to memory.

E EST error codesLogged as a result of error detection while running EST.

F Test Status indicatorAn incrementing number denoting which EST test is executing.

GTest Event separator line

A line drawn below the last error code of one test event and the first error code of a subsequent test event.

HBattery Status codes

Codes extracted from the battery that describe various battery conditions (they are not errors)

I

Channel / Element Status codesNumbers indicating channel/element status:

Line #1 = Receive Channel StatusLine #2 = Transmit Channel StatusLine #3 = Transducer Element Status

J Upgrade Confirmation codeAn alphanumeric string unique to the software upgrade being installed

KSoftware Date code

Numbers representing the day, month, year, and time of software installation

24

Performance Verification and Safety TestsLEDs

LEDs

LEDs are mounted on the keyboard, the AC adapter, and the external charger to indicate various conditions.

Keyboard LEDsThe keyboard includes a POST LED and an AC Adapter Present LED.

The green POST LED is set in the Power key . When lit, the LED indicates that the system passed the Power On Self Test.

The green AC Adapter LED is below the lightning bolt . When lit, the LED indicates that the AC adapter is turned on and connected.

External charger LEDsTwo LEDs are mounted on the external charger. The Normal Mode LED operates when the charger is in the normal charging mode. The Calibrating Mode LED operates when the charger is calibrating a battery in the left charger bay. Table 4 shows the meaning of the external charger LEDs displays.

AC adapter LEDsThe AC adapter includes a green Power LED and a yellow Adapter LED. When the green LED is lit, AC power is on. Table 5 shows the meaning of the AC adapter LEDs displays.

Table 4 External Charger LED States

LED State Meaning

Normal

Steady yellow Battery chargingSteady green Charging doneBlinking red ErrorBlinking red or yellow Waiting

CalibratingBlinking yellow CalibratingBlinking green Calibration done

Table 5 AC Adapter LED States

LED State Meaning

PowerGreen AC power is ONDark AC power is OFF

AdapterSteady yellow Battery fully chargedBlinking yellow Battery chargingDark No battery detected

25

Performance Verification and Safety TestsSystem Messages

System Messages

Some problems cause messages to appear on the imaging screen. Refer to the Users Guide for explanations of these messages. The system also displays icons indicating certain conditions.

Over temperature icon When this icon appears, the system is near its maximum operating temperature, and will shut down if not cooled.

Battery fuel gauge The fuel gauge indicates the state of the batterys charge. The icon blinks when the charge is critically low; recharge the battery immediately.

Battery calibration icon This icon appears near the fuel gauge when the battery requires calibration. Remove the battery and calibrate it using the external charger.

26

Performance Verification and Safety TestsSystem Messages

27

3 Troubleshooting and Repair

Overview

This chapter provides information for troubleshooting the M2430A. It includes a step-by-step troubleshooting and repair process, explanations of status and error codes, and instructions for installing the System software.

The major sections of this chapter are as follows: Troubleshooting and Repair Process (page 28) Repair Flowchart (page 30) Troubleshooting Table (page 32) EST Codes (page 41) Battery Status Codes (page 44) POST Error Codes (page 45) Channel/Element status codes (page 43) Runtime Error Codes (page 47) Installing System Software (page 49) Voltage Measurements (page 50)

Repair PhilosophyThe repair philosophy for the M2430A is subassembly replacement. Examples of subassemblies are the keyboard, the System PCB, and selected cables. Repairs that involve replacing individual components on a PCB are not supported.

CAUTION Only factory authorized repair facilities can replace components. Component level repair is extremely difficult because of the advanced design and manufacturing techniques used. Unauthorized component replacement can impair performance of the M2430A.

28

Troubleshooting and RepairTroubleshooting and Repair Process

Equipment RequiredTroubleshooting requires the equipment shown in Table 6.

Troubleshooting and Repair Process

Follow the steps below to isolate and repair problems with the M2430A. The process is also described in the Repair Flowchart on page 30.

1 Interview the user.If possible, talk directly with the user who reported the problem. Identify what they were doing when the problem occurred, and exactly what happened. What was on the display? Were any sounds noticed? Were there operational problems?

2 Decontaminate the unit using local decontamination procedures.Refer to Infection Control on page 5 for more information.

3 Examine the system Before turning the system on, examine it for physical damage or signs of misuse. Many problems result from external failures such as defective cables or connectors, drained batteries, or improper accessories.

Gently shake the unit and listen for loose components. Loose parts can cause improper operation or damage. For example, a screw rolling around can create a short circuit and damage the system if power is applied. If something sounds loose, open the case and look for disconnected parts before turning the system on. Correct any problem found.

4 Install a known good battery in the M2430A, if one is available.The battery must be fully charged.

Table 6 Troubleshooting Equipment

Test Equipment SpecificationsVolt meter Accuracy: > 2% of rangePhantom (optional) Part no. ATS 2430-1000 or ATS Model 539System software on CompactFlash

card Part no. M2430-10010

External battery charger Refer to Table 15 on page 72 for part numbersPhased array transducer Part no. 21420A or 21420-68000OptiGo AC adapter Refer to Table 15 on page 72 for part numbersLithium Ion battery Part no. 1420-0868Blank CompactFlash card Any Type I

29


5 Turn on the system.If the imaging screen remains blank, but the POST LED is lit, a display problem is likely. The POST LED signals that the system passed the self test when turned on.

If the POST LED doesnt light, see POST Error Codes on page 45. If the display is defective, refer to Display on page 34 in the Troubleshooting table. Perform indicated repairs until the unit passes the self test and the display works.

6 Review the Error logs.Open the Support screen (see Opening the Support Screen on page 22), and review the POST, Runtime, and EST error logs. Make note of any error codes displayed. Refer to the Error Code tables to interpret the codes. If any errors are battery related, refer to Battery Status Codes on page 44.

NOTE Always review the System Log before running the diagnostic tests. If new errors are created during the diagnostic tests, they may overwrite the existing codes and erase valuable clues.

7 Run the diagnostic tests.Perform the Extended Self Test (page 12). Refer to EST Codes on page 41 for likely causes of the resulting codes, then use the Troubleshooting table to find what repairs are needed.

8 Try to reproduce the problem.If the problem is identified, use the Troubleshooting table to identify the causes, and perform any repairs indicated, as in step 10.

If the problem cannot be reproduced and the diagnostic tests produce no error codes, an intermittent condition or operator error is likely. Check the units Repair History (step 9.)

9 Examine the units repair history.Some intermittent problems cannot be reproduced. If the system was returned before for the same problem, replace the most likely subassembly.

If the unit has been returned repeatedly for the same unreproduceable problem that previous parts replacements have not solved, the whole system may require replacement.

10 Repair any problems found.Follow the procedures in Chapter 4 to replace defective parts or subassemblies. Refer to Chapter 5 to identify parts, their locations and their part numbers.

11 Verify the systems performance.After all repairs are complete, test the system as explained in Chapter 2. If the system passes all tests, return it to the user. If the system fails any test, continue the troubleshooting and repair process until the system performs properly.

12 Record repair and test data.Use local documentation procedures to record what was done to the unit, results of all tests run, and any parts replaced. OptiGo Service Representatives should use the Test Matrix on page 20.

30


Figure 7 Repair Flowchart

Review Problem Report and Interview User

Decontaminate Unit

Inspect System

Loose or damaged parts?

Yes

Yes

Repair

Power on Systemwith known good battery

POST LED and display on?

No

No

See Troubleshooting table to Identify and correct

problem

Open Support screen

No

Error codesshown?

Yes Note errors as "Old" & check Error Code Table

Run EST test

No

New error codesshown?

Yes Note errors as "New" & check Error Code Table

Continue on next page

31


Yes

Yes

Yes

No

No

No

Is problem reproduceable? Review units Repair History and old error codes

Use Troubleshooting table to identify problem

Repair problems indicated by new error codes

Test to verify performance

Passes tests?

Record test and repair data

See Troubleshooting

Process,step 9

Problemreported previously?

Continued fromprevious page

Test to verify performance

Repair problems indicated by new error codes

No

Yes Is problemsolved?

END

32

Troubleshooting and RepairTroubleshooting Table

Troubleshooting Table

The Troubleshooting table covers the problem areas below.

Power (page 33)Problems with starting the system or its shutting down unexpectedly

Battery (page 34)Problems related to the battery or its charging

Display (page 34)Problems with the imaging display

Operational (page 36)Problems that occur during operation

CompactFlash card (page 37)Problems with saving images or reading saved images

Keyboard (page 37)Problems with the keyboard

LEDs (page 38)Problems with the LEDs not working properly

Mechanical (page 38)Problems with the case and its hardware, the fan, or physical damage to the transducer

Safety (page 38)Indications that the transducers electrical isolation may be faulty

Using the TableThe table provides Possible Causes and Corrective Actions.

Possible Causes are arranged in order of the approximate probability of their occurrence. Investigate them in the order given.

For each Possible Cause, try the Corrective Actions listed. If the first Corrective Action does not fix the problem, try the others in the order listed.

NOTE Before replacing any parts, make sure the cables and flex circuits are properly connected. See Service Notes on page 51.

If the likely cause is Software, reinstall the System software. See Installing System Software on page 49.If the case must be opened or subassemblies replaced, use the procedures in Chapter 4.

33


Table 7 Troubleshooting

Problem Area Symptoms Possible Causes Corrective Actions

Power

System wont turn on when powered by battery

1. Battery missing, discharged, or damaged

2. Battery cable defective or disconnected

3. Bad Power PCB4. Bad System PCB

1. Check battery charge indicators

2. Install known good battery3. Check Power PCB voltages4. Check battery cable5. Replace Power PCB6. Replace System PCB7. Replace keyboard

Closing lid doesnt turn System off

1. Magnet missing2. Bad keyboard magnetic

switch

1. Check magnet2. Replace keyboard

System wont turn on when powered by AC adapter

1. Battery missing2. No power to adapter3. Bad adapter

1. Install battery2. Check adapter power LED3. Check adapter LED on

keyboard4. Check AC outlet 5. Replace adapter

Power seems to fluctuate

1. Bad or discharged battery

2. Bad AC adapter3. Cables loose or

defective4. Bad Power PCB5. Bad System PCB

1. Install known good battery2. Run on battery only to define

problem source3. Reseat all connectors4. Check cables and

connectors for damage5. Replace AC adapter6. Replace Power PCB7. Replace System PCB

System shuts down and shows Over Temp message

1. Fan not running2. Air flow to fan blocked3. Bad Power PCB4. Bad System PCB

1. Listen for fan noise2. Clear air inlets3. Run EST and check error log4. Replace fan5. Replace Power PCB6. Replace System PCB

34


Battery

Battery does not charge on AC adapter

1. AC adapter not turned on2. Bad battery3. Bad AC adapter

1. Check green power LED on adapter (See LEDs on page 38)

2. Check yellow charge LED on adapter

3. Check charger LED on keyboard

4. Replace battery5. Replace AC adapter

External charger wont charge two batteries simultaneously

Normal - batteries charge sequentially None

Battery does not power system for expected time

1. Battery not calibrated2. Bad battery

1. Calibrate battery2. Replace battery

Battery wont charge after long storage

1. Bad batteryStoring uncharged may damage battery

1. Recalibrate battery2. Replace battery

External charger shows error message during charging or calibration

1. Bad battery2. Bad external charger

1. Replace battery2. Replace charger

Recalibration LED on external charger doesnt turn green after charging for 16 hours

1. Bad battery2. Bad external charger

1. Replace battery2. Replace external charger

Battery icon does not appear on imaging screen

1. AC adapter is plugged in2. Loose connections3. Bad cable or connector4. Bad Power Supply PCB

1. Reseat cable connectors2. Replace battery cable3. Replace Power Supply PCB

Display(Continues on

next page)

System on (POST LED lit) but display not working properly

1. Disconnected or bad cable to display

2. Bad display3. Bad Backlight/Inverter

PCB4. Bad System PCB

1. If display is visible, run EST and check errors

2. Reseat display cable connector and inspect cable

3. Replace Display4. Replace Inverter PCB5. Replace System PCB

General image quality issuesExamples:

Poor penetrationWeak image

1. Operator technique2. Incorrect settings3. Bad transducer4. Bad System PCB

1. Discuss technique with user2. Run EST; check channel

status3. Test image; see page 164. Replace transducer5. Replace System PCB



35


Display(Continued)

Grainy, noisy, fuzzy image1. External electric noise2. Bad transducer3. Bad Power PCB4. Bad AC adapter

1. Operate on battery power2. Move device to another

place3. Run EST; check error codes4. Replace transducer5. Replace Power PCB6. Replace System PCB

Artifacts*:Radial linesBlack or white flashShooting starsSnow or random spots

* See Artifacts on page 39

1. External electric noise2. Bad transducer cable or

connection3. Bad System PCB4. Bad Power PCB5. Bad AC adapter

1. Move device or other equipment to another place

2. Operate on battery power3. Reseat cable connection4. Try another transducer5. Run EST; check error codes6. Does flexing System or

Power PCB cause artifact?7. Check AC ground8. Replace transducer9. Replace System PCB10. Replace Power PCB11. Replace AC adapter12. Replace AC power cord

Color problems

1. External electric noise2. Bad transducer3. Bad System PCB4. Bad Power PCB5. Bad AC adapter

1. Move device or other equipment to another place

2. Run EST; check error codes3. Operate on battery power4. Try another transducer5. Replace System PCB6. Replace Power PCB

No sector image

1. Transducer connector not seated

2. Bad transducer or system connector

3. Bad System PCB4. Bad transducer

1. Reseat connector2. Run EST; check error codes3. Check status codes for

channels & elements4. Check power supply

voltages; replace Power PCB if wrong

5. If EST shows all elements absent, replace transducer

6. Replace System PCB if errors shown



36


Operational

Over Temp warning appears1. Fan not running2. Air flow to fan blocked3. Bad Power PCB4. Bad System PCB

1. Listen for fan noise2. Clear air inlets3. Run EST and check error log4. Replace fan5. Replace Power PCB6. Replace System PCB

System freezes1. Loose connections2. Software problem3. Bad System PCB4. Bad Power PCB

1. Reseat cable connections2. Check error log3. Remove and reinstall battery4. Operate on battery power5. Run EST and check errors6. Check for loose parts7. Reload system software8. Replace System PCB9. Replace Power PCB

Unexpected events or operations

1. Software problem2. Bad keyboard3. Bad System PCB4. Bad Power PCB

1. Check error log2. Run EST and check errors3. Check battery charge4. Reload system software5. Replace keyboard6. Replace System PCB7. Replace Power PCB

Date, time, or localization settings lost when unit shut down

1. Dead backup battery2. Bad backup battery

holder3. Bad System PCB

1. Run EST and check errors2. Check backup battery

voltage. Must be 2.9 VDC minimum

3. Inspect battery holder4. Replace backup battery5. Replace System PCB

Measurement accuracy questionable

1. Operator technique2. Bad system software3. Bad System PCB

1. Review measurement techniques with user

2. Run EST and check errors3. Check measurement against

display depth scale (page 15)

4. Reload system software5. Replace System PCB

Fuel gauge and battery LEDs dont agree

1. Battery not calibrated2. Bad battery3. Bad System PCB

1. Calibrate battery2. Replace battery3. Replace System PCB

Yellow (indeterminate) fuel gauge displayed

1. System and battery not communicating

2. Bad battery3. Wrong battery4. Battery not calibrated

1. Verify that battery is correct type

2. Calibrate battery3. Replace battery



37


CompactFlash Card

(Continues on next page)

Cannot save images to CompactFlash card

1. CompactFlash card full 2. Wrong type Flash card3. Card inserted wrong4. Card write-protected5. Bad card6. Bad System PCB

1. Make sure card is correct type

2. Replace with card that has empty space

3. Run EST and check errors4. Do save and watch for error

messages5. Save files to another

directory, then reformat card6. Replace System PCB

Cannot read images on Flash card

1. Review software not set to read JPEG

2. System power interrupted during image save

1. Set image reading software to read JPEG

2. Try another card

Images were saved, but are lost or corrupt

1. Wrong type Flash card2. Bad Flash card3. Review software not set

to JPEG4. Card was removed

during image save5. System power

interrupted during image save

6. Card corrupted by other product

7. Image file names longer than 11 characters


2. Replace card3. Run EST and check errors4. Use Windows Explorer to

examine card

System doesnt recognize card1. Wrong type Flash card2. Data on card is corrupt3. Card formatting wrong


2. Replace with known good card

3. Use Windows Explorer to examine card

4. Save files to another directory, then reformat card

5. Run EST and check errors

Keyboard Any keyboard problem1. Bad keyboard2. Bad cables3. Bad System PCB

1. Check keyboard cable2. Run EST and check errors3. Replace keyboard4. Replace System PCB



38


LEDs

AC adapter LED on keyboard not lit

1. No power to AC adapter2. Bad AC adapter3. Bad cable4. Bad keyboard

1. Check power LED on adapter

2. Check outlet adapter is connected to

3. Replace keyboard4. Replace AC adapter

Green power LED on AC adapter not lit

1. AC outlet not powered2. Power cord plug not

seated in outlet3. Bad AC adapter

1. Check outlet2. Reseat plug and connectors3. Replace AC adapter

Mechanical

Case lid wont stay open (falls shut) or opens too stiff 1. Bad case hinge

1. Inspect hinge2. Replace hinge

Flash card or battery door does not open or close properly

1. Bad door latch2. Bad case

1. Replace door2. Replace case part that holds

door

Pinholes or other damage to transducer lens

Lens material discoloredLens material lifting

1. Improper cleaning or handling can cause pinholes and other damage

2. lens material lifting may indicate bad transducer

1. Run EST; check for bad elements

2. Replace transducer damage is severe

Fan not running1. Bad fan2. Bad fan cable3. Bad Power PCB

1. Check fan cable2. Replace fan3. Replace Power PCB

Battery doesnt slide in1. Wrong battery2. Battery key not aligned3. Damaged key or keyway

1. Verify that battery is correct type

2. Align battery key with keyway

3. Inspect battery and compartment for damage

Safety Tingling sensation from transducer

1. Often a static discharge from patient or operator, not a device problem

2. Damaged lens

1. Discharge static from patient and operator

2. Replace transducer



39


ArtifactsArtifacts can be caused by electrical noise from inside or outside the system. Eliminate noise, starting with external sources. When trying to find a noise source, put the system in Color mode, turn the color gain all the way down, then bring it up until color just begins to appear. The display is most susceptible to artifacts when adjusted this way. Figure 8 on page 40 shows examples of some types of artifacts.

EXTERNAL NOISE SOURCES

External noise can reach the system in two ways: by radiation, and by conduction along a power line.

A power line filter can diagnose conducted noise. Holding the transducer in one hand and the power cord in the other also acts as a filter. If this affects the artifact, the noise is conducted on the power line. If the artifacts disappear when the system is run on battery power, they are the result of noise on the AC power line.

Use the transducer to sniff out radiating noise sources. To eliminate the artifacts, move the system or the noise source. Table 8 lists some examples of radiating noise sources.

INTERNAL NOISE SOURCES

Test the transducer for noise by flexing its cable. If this generates artifacts, the transducer is a noise source. Flex and tap on the PCBs to see if artifacts are generated.

Table 8 Possible Noise Sources

Computer Patient monitor CopierFluorescent light Treadmill Coffee makerUltrasonic door control Electrosurgery unit Electric bedFloor buffer Radio station PagersPrinters Elevator door Fan

40


Figure 8 Artifacts

Radial Lines A Black Flashlight White Flashlight

Radial Lines B Focal Zone Noise (smiles) Snow

Radial Lines C Radial Lines D Horizontal Lines

41

Troubleshooting and RepairError and Status Codes

Error and Status Codes

The POST, EST, and Runtime tests generate status and error codes. The Support screen displays these codes.

Extended Self tests (EST) run when initiated with the procedure described in Extended Self Test (EST) on page 12. EST includes tests of the systems front end and transducer channels and elements.

Power On Self tests (POST) run at system startup, and include tests of the back end of the system.

Runtime tests run during operation of the system.

EST CodesThe Extended Self tests generate two sets of codes: the EST error codes, and the Channel/Element status codes. Both sets are displayed on the Support screen.

See Extended Self Test (EST) on page 12 for information on running the EST.

EST error codesThe Extended Self tests check parts of the systems front end that are not tested during POST. Errors found during these EST tests are displayed on the Support screen under EST. The error codes are displayed as a twelve-digit number. The four digits at the left are the number of the test, and the eight digits at the right are the code for an error found during that test.

Table 9 on page 42 lists the EST error codes, their meanings, and the likely causes. The causes are numbered; the most likely cause is numbered 1, the next most likely is numbered 2, and so on.

NOTE To solve problems whose cause is listed as Software, reinstall the System software. See Installing System Software on page 49.

Test Number Error Code00nn 0000000n

42


Table 9 EST Error Codes

Test Number and Name Error Code Likely Cause

0001 Transmit

00000001 1. Software

00000002 1. System PCB2. Software00000004 1. Software

00000008 1. System PCB2. Software

0002 Transducer element(These errors indicate that the test did not execute properly.)


00000003 1. System PCB2. Software00000004 1. Software00000005 1. Software


00000007 1. Software2. System PCB00000008 1. Software


0003 Front end voltage

00000001 1. System PCB00000002 1. System PCB

00000003 1. Power PCB2. System PCB00000004 1. System PCB

0080 Receive


00000003 1. System PCB2. Software00000004 1. Software00000005 1. Software


00000007 1. Software2. System PCB00000008 1. Software


43


Channel/Element status codesThe Extended Self test evaluates the transducer elements and the transmit and receive channels. The results of the test are saved in memory and codes are displayed in the Support screen, under the transducer symbol .

The Channel/Element status codes are presented as three lines of 12-digit hexadecimal notation. The top line is the receive channel status, the middle line is the transmit channel status, and the bottom line is the transducer element status. Any line that is all zeros indicates no anomalies in that channel, or in the transducer elements. The presence of some anomalies is acceptable; consult your service representative if there are large numbers of anomalies.

Example: 000E 0010 0013

A line that is all zeros indicates no anomalies; a line that is not all zeros indicates anomalies.

To interpret a code, the 12-digit hex line must be converted to a 48-digit binary number. Any hex-to-binary converter will work; the procedure below uses the Calculator built into Microsoft Windows, versions 95 and later.

To convert hexadecimal codes to binary using the Windows Calculator:

1 In Windows, click the Start button , then select Programs, then Accessories, then click Calculator.

2 On the Calculators View menu, select Scientific.

3 Select Hex.

4 Click in the number field of the calculator, then type the first four digits of the status code.Note that zeros at the beginning of the number do not register in the field. This is normal, and does not impair the conversion.

5 Select Bin.

44


The Calculator displays the binary equivalent of the hexadecimal code you entered.

Note that the Calculator does not display any leading zeros in the converted code.

6 Write down the converted code, adding zeros at the left until it is 16 digits long.

7 Repeat steps 3 through 6 with the other two lines of the status code.

8 Combine the three 16 digit strings into one 48 digit line of binary code.

Each of the 48 digits represents a channel or transducer element. The rightmost digit is channel or element 1, the digit just to the left is channel 2, and so on; the leftmost digit is channel 48.A binary digit that is zero represents a good channel or transducer element; a digit that is 1 represents a channel or element that has an anomaly.

Battery Status CodesBattery status codes are displayed on the Support screen, under the battery symbol . These codes are supplied to the system by the battery. They are presented on the Support screen as four lines of code; each line has two elements.

Only the three elements shown in bold in the example are useful diagnostic tools, and are described below. These three elements are all in decimal code; no conversion is required.

00A0 0040 0000

0000000010100000 0000000001000000 0000000000000000

Hex code displayed on Support screen

Converted binary number

Channel orelement 1

Example:

Channel orelement 48

0085000200C0????5044000000000000

0085 0002

Left element

Right element

Line 1Line 2Line 3Line 4

Example:

45


Line 1 left element - battery chargeThis element reports the batterys charge as a percentage of the maximum possible charge.

Example: 0085 means the battery is charged to 85% of its maximum capacity.

Line 1 right element - max errorThis indicates the percentage of possible error in the battery charge indication (line 1 left element.) If the maximum possible error exceeds 10%, an icon appears briefly on the battery LCD after startup. The battery should be calibrated using an external charger.

Example: 0002 means the battery charge report may be in error by as much as 2%.

Line 3 left element - battery full charge capacityThis element reports the number of milliAmpere hours the battery can store. This is an indication of how long the system can operate on a fully charged battery. A typical new battery can store 4700 to 5000 mAh. The capacity decreases as a battery ages. After 300 recharges, capacity is 80% of new. If this element reads ????, no charge capacity data is available.

Example: 5044 means the battery has a capacity of 5044 mAh.

Lines 2 and 4, and line 3 right elementThese codes are not used in field diagnostics; ignore them.

POST Error CodesThe POST tests run when the system starts up. POST error codes are displayed on the Support screen under POST in this format:

The left four positions indicate the test number that the code refers to. The eight positions to the right of the test code are the actual error code. Table 10 Lists the error codes and their most likely causes.

Example: 0082 00000021 indicates a software problem.

NOTE To solve problems whose cause is listed as Software, reinstall the System software. See Installing System Software on page 49.

Test Number Error Code00nn 000000nn

46


Table 10 POST Error Codes

Test Number and Name Error Code Likely Cause0001 Software upgrade 00000001 Software

0002 Software checksum00000001 System PCB00000002 System PCB

0003 Picasso register00000001through00000003

System PCB

0004 Super I/O basic00000001through0000000A

System PCB

0005 Super I/O serial port00000030through00000037

System PCB

0006 Runtime clockinitialization

0000000100000002 System PCB

0080 Power PC speed 0000000100000002 System PCB

0081 Rockwell/detector00000001through00000013

System PCB

0082 Front end

00000001through00000011

System PCB

00000012Software

0000001300000014 System PCB00000020

Software000000210000002200000030through0000004B

System PCB

00000050 Software00000051through00000071

System PCB

00000072 Software

47


Runtime Error CodesThe OptiGo system software runs tests while it is operating. Any errors found during this testing are displayed in the middle of the Support screen under RT as hexadecimal code in this format:

The leftmost four digits are the error code. The other eight digits are not used in troubleshooting. Table 11 lists the Runtime error codes and their causes. Causes are numbered; the most likely cause is numbered 1, the next most likely is numbered 2, and so on.

Example: 0150 0000123 indicates a problem with the System PCB.

Error Code Not relevant0nnn 00000000

Table 11 Runtime Error Codes

Error Code Likely Causes Error Code Likely Causes0100

through0102

1. System PCB0227

through022F

1. System PCB

0120through

0123

1. System PCB2. Keyboard

0230through

02321. System PCB

0124 1. System PCB 0233 1. Bad battery2. System PCB0130

through0132

1. System PCB2. Keyboard 0234 1. System PCB

0140through

01421. System PCB 0235 1. Bad battery2. System PCB

0150and0151

1. System PCB0236and0237

1. System PCB

0170through

01791. System PCB 0238 1. AC adapter2. System PCB

0200through

02021. System PCB 0239 1. System PCB

0220 1. Bad battery2. System PCB 023A1. Bad or missing

battery0222 1. System PCB 023B 1. System PCB

0225 1. Bad battery2. System PCB 0300 1. Software

Continues at top of next column Continues on next page

48


0301 1. System PCB2. Software 0480 1. Software

0302through

03071. Software 0481

1. Software2. System PCB3. Power supply

03081. Keyboard2. System PCB3. Software

0500and

0501


0309through030D

1. Software0502

through050F

1. Software

030Eand

030F1. System PCB

0510through

05121. Software

0400 1. Software2. System PCB0513and

0514

0401 1. Software0515and

05161. Software

0402and0403

1. System PCB2. Software

0517through

0519


0404 1. Software051A

through051F

1. Software

0405and0406

1. System PCB2. Software

0520through052F

1. Software

0407 1. Software0530

through053F

1. Software

0408and0409

1. System PCB2. Power supply

0540through054F

1. Software

040A0550

through055C

1. Software

040Band

040C1. Overheated; let

cool 0800 1. Backup battery

Continues at top of next column End

Table 11 Runtime Error Codes

Error Code Likely Causes Error Code Likely Causes

49

Troubleshooting and RepairInstalling System Software

Installing System Software

If upgrade or reinstallation of the System software is required, perform these steps:

1 Turn the device OFF.

2 Insert the OptiGo System Software CompactFlash card in the flash card receptacle on the side of the unit.Use only the latest System Software version that is compatible with the hardware.

3 Turn the device ON.The installation process starts automatically. The green POST LED lights, and the OptiGo splash screen appears on the display with a progress bar.

When the installation is done, a large checkmark appears on the display. After a few seconds, the system shuts off.

4 Remove the CompactFlash card.

To view the software upgrade confirmation number or the current software version, open the Support screen as described on page 22.

50

Troubleshooting and RepairVoltage Measurements

Voltage Measurements

Primary system voltages can be measured at test point pads on the Power Supply PCB, on top of the System PCB. Measurements can be made in any imaging mode or in the Support screen, with or without the transducer connected.

For access to the test points, remove the case bottom cover (see Chapter 4, Removal and Replacement.) Figure 9 shows the test point locations on the Power Supply PCB.

Figure 9 Voltage Test Points

Connect the reference probe to the test point labeled GND, then test the voltage at each of the other test points. Voltages should be within the limits in Table 12.

NOTE Remember to add the error factor of the meter to the tolerances in the table. Example: If the meter is accurate to 1%, the voltage for V 5 should be 5.0 V 6%.

V1.9 V3.3

Power Supply PCB

Top View

V5 VB GND

Table 12 Power Supply Voltage Limits

Test Point Voltage LimitGND ReferenceV 1.9 1.9 VDC 5%V 3.3 3.3 VDC + 3%, 5%V 5 5.0 VDC 5%V BBattery voltage

8 15 VDCVaries with battery charge

51

4 Removal and Replacement

Overview

This chapter includes procedures for removing and replacing subassemblies of the M2430A. Most of the subassemblies described are available as replacement parts. However, some of those described are not available, and are included because they need to be removed to service other subassemblies. For a list of available replacement subassemblies, see Table 15 on page 72.

Chapter ContentsThe major sections of this chapter are as follows:

Service Notes (page 51) Removing and Replacing Subassemblies (page 53)

Service Notes

Following are some important points to keep in mind when servicing the M2430A.

Serialized ComponentsSome replacement assemblies in the replacement parts tables contain one or more Serialized Components. Serialized Components require detailed tracking. See Serialized Components on page 51.

General The following sections describe how to work with the internal assemblies of the M2430A.

Internal ConnectionsWhen troubleshooting indicates a particular assembly may be at fault, it is good practice to check all the connections to that assembly and retest before replacing the assembly.

Cable and Assembly PlacementRouting and dressing of wires and cables inside the chassis are important in preventing wear problems and reducing electromagnetic interference from the ultrasound system.

As you disassemble any part of the system, pay special attention to cable and wire routing. Route and dress all cables and wires as they were originally.

Return all components to their original position in the case.

52

Removal and ReplacementService Notes

Instrument ReassemblyThe M2430A is fitted with extensive EMI gasketing. If it is not reassembled correctly, the instrument may not be properly sealed against electromagnetic emissions. This could cause interference with other equipment. Screws must be the proper size for their locations; a screw that is too small or too long can loosen or damage other parts.

When assembling the M2430A:

Replace all gaskets in their proper locations.

Correctly assemble all parts that mate with gaskets (make sure the gaskets are not wrinkled or pinched).

Make sure screws are the proper size for each location.

Use a torque driver set at 4 lb-inches and make sure all screws are not cross-threaded and are tightened to the setting.

Tools Required The following tools are needed to perform the procedures given.

#1 Phillips screwdriver

1/4 inch (6 mm) flat blade screwdriver 1/8 inch (3 mm) flat blade screwdriver Needlenose pliers

LCD installation tool, part number C-T364915

Torque screrwdriver (4 lb-inches)

CAUTION Remove the main battery before beginning any disassembly. Damage may result from disassembly with the battery installed.

CAUTION Make sure every screw is the correct size for the location. Screws of the wrong length or diameter can damage the unit. Screw sizes are noted in the procedures and in the parts diagrams in Chapter 5.

Disposal of the M2430ARemove the battery before disposing of the M2430A. Dispose of the device in accordance with local standards.

WARNING Disposal of the device with the battery inserted presents a potential shock hazard.

53

Removal and ReplacementRemoving and Replacing Subassemblies

Removing and Replacing Subassemblies

Replacement or service of subassemblies requires opening the Case bottom, removing the Display assembly, or both. Procedures for those operations, and removing and replacing the subassemblies are on the pages listed below. Each procedure refers to the exploded drawing that includes the subassembly being removed or replaced.

MAJOR SUBASSEMBLIES Case Bottom and Power Supply PCB (page 53) System PCB (page 55) Display Assembly (page 59) Keyboard (page 67)

MINOR SUBASSEMBLIES AND PARTS Fan (page 58) Backup Battery (page 58) Liquid Crystal Display (LCD) (page 60) Display Backlights (page 65) Display Window Glass (page 65) Hinges (page 66) Backlight/Inverter PCB (page 67)

Case Bottom and Power Supply PCBThis section describes how to open the bottom of the M2430A case, remove the Power Supply PCB, and reassemble them. It is best to remove the Power Supply PCB if the case is opened, to prevent damage to the battery cable and mating parts.

Opening the case bottom is required for access to these subassemblies:

System PCB

Power Supply PCB

Keyboard

Fan

Backup battery

Battery cable

Opening the case and removing the Power Supply PCB

CAUTION Always wear a wrist strap and follow other ESD procedures when the M2430A case is open. Electrostatic discharge can damage electronic components.

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Complete this procedure to remove the case bottom and Power Supply PCB.

Refer to Figure 17 on page 74 and Figure 18 on page 76.

1 Remove the battery.

2 Disconnect and remove the transducer.

3 Place the M2430A upside down, with the transducer socket away from you.

4 Remove the seven M3 x 8mm screws from the bottom of the unit.

5 Lift the case bottom from the unit.EMI gasketing holds the case bottom in place and may require prying the case apart

CAUTION Do not pull the case bottom away suddenly. The battery cable is attached to the case bottom, and jerking the case bottom away can damage the cable or mating parts.

6 Remove the four M3 x 6mm screws that hold the Power Supply PCB in place.

7 Pull straight up on the Power Supply PCB near its connector to the System PCB.

NOTE The Power Supply PCB is a Key Component; if it is replaced, the serial numbers of the old and new PCBs must be recorded in the unit Service Record. See Serialized Components on page 69.

8 Disconnect the Main Battery cable from the Power Supply PCB. Refer to Figure 10 on page 55.

9 Disconnect the Fan cable from the Power Supply PCB. Refer to Figure 10 on page 55.

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Figure 10 Power Supply PCB

NOTE If replacing the case bottom, remove the serial number label, its cover label, and the battery cable assembly. Install the battery cable assembly and the original serial number label (with a new cover label) on the new case bottom.

Installing the Power Supply PCB and closing the caseRefer to Figure 18 on page 76 and Figure 17 on page 74.

1 Connect the Main Battery cable to the Power Supply PCB.

2 Connect the Fan cable to the Power Supply PCB.

3 Carefully align the Power Supply to System PCB connector, and press the Power supply PCB down until the connector is seated.

4 Install the four M3 x 6mm screws that hold the Power Supply PCB in place.

5 Place the case bottom on the system.

6 Install the seven M3 x 10 mm screws in the bottom of the unit.

System PCBThis section describes how to remove the System PCB. The System PCB is a Key Component; if it is replaced, the serial numbers of the old and new PCBs must be recorded in the unit Service Record. See Serialized Components on page 69.

Battery Cable Connector

Fan CableConnector

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Removing the System PCBRefer to Figure 18 on page 76.

1 Remove the case bottom and Power Supply PCB, as described in Case Bottom and Power Supply PCB on page 53.Keep the unit upside down, with the transducer socket away from you.

2 Use a flat blade screwdriver to remove the four Power Supply PCB standoffs.

3 Remove the four M2.5 x 12mm and four M3 x 18mm screws that hold the metal RFI shield on the System PCB.

4 Remove the metal RFI shield.

5 Remove the M3 x 6mm screw from the gold ground plane on the corner of the PCB.

6 Raise the PCB about one inch.The board may stick to rubber cushions underneath; be careful raising the board to avoid sudden strain on the Display cable.

7 Disconnect the Display cable from the connector under the near edge of the PCB.

8 Rotate the near edge of the PCB away from you and disconnect the Keyboard cable.Make note of the routing of the cable; failure to route it properly will prevent installation of the System PCB.

Installing the System PCBRefer to Figure 18 on page 76.

1 Connect the Keyboard cable to the PCB.See Figure 11 on page 57. The cable passes beyond the edge of the PCB, then folds back on itself before connecting to the PCB. When the PCB is installed, a loop of the Keyboard cable protrudes from under the PCB.

CAUTION Take care to align connectors properly. Misaligned connections can cause damage to the system.

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Figure 11 Keyboard Cable Routing

2 Connect the Display cable.

3 Place the System PCB in the system.

4 Install the M3 x 6mm screw on the gold ground plane at the corner of the PCB.

5 Place the metal RFI shield over the PCB.

6 Install the four M2.5 x 12mm and four M3 x 18mm screws that hold the metal cover on the System PCB.

7 Install the four Power Supply PCB standoffs.

8 Install the Power PCB and case bottom.See Installing the Power Supply PCB and closing the case on page 55.

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Fan

Removing the fanRefer to Figure 18 on page 76.

1 Complete the procedure described in Opening the case and removing the Power Supply PCB on page 53.

2 Remove the two M3 x 5mm screws that secure the fan in place.Note the direction of airflow before removing the fan.

Installing the fanRefer to Figure 18 on page 76.

1 Position the fan for proper airflow.Refer to Figure 11 on page 57.

2 Install the two M3 x 5mm screws that secure the fan in place.


Backup Battery

Removing the backup batteryRefer to Figure 18 on page 76.

1 Complete the procedure described in Opening the case and removing the Power Supply PCB on page 53.

2 Use a small tool to press down on the edge of the battery nearest the battery retainer. Refer to Figure 12 on page 59. Gently tilt the battery up and slide it out of the holder.Note the polarity of the battery installation.

CAUTION Do not insert any metal tool in the small slot of the holder; this can short-circuit the battery

Be cautious if it is necessary to pry the battery out; use a nonconductive tool, and do not pry too hard. Prying out the battery can damage the battery retainer.

Do not pull up the battery retainer; distorting the retainer can prevent good electrical contact.

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Figure 12 Removing the Backup Battery

Installing the backup battery1 Slide the battery into the holder and press it into place.

CAUTION Be sure to install the new battery in the correct orientation. Follow the polarity markings on the bottom of the battery holder (under the battery).


Display AssemblyThe Display assembly must be removed to replace the Keyboard, LCD, backlights, and hinges.

Removing the Display assemblyRefer to Figure 20 on page 80.

1 Remove the main battery.

2 Disconnect the transducer.

3 Place the system right side up, and open the Display fully.

4 Pry up and remove the hinge cover in the middle of the cylindrical part of the Display base.

5 Remove the three M3 x 8mm screws securing the metal Display cable connector clamp, and remove the clamp.

6 Disconnect the Display cable from the System PCB connector.

7 Support the Display with one hand and remove the four M3 x 6mm hinge screws.

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Installing the Display assemblyRefer to Figure 20 on page 80.

1 Hold the Display assembly in place and install the four M3 x 6mm hinge screws.

2 Connect the Display cable to the System PCB connector.

3 Place the metal Display cable connector clamp over the connector and install the three M3 x 10mm screws.

4 Snap the hinge cover in place.

Liquid Crystal Display (LCD)Removing the LCDRefer to Figure 21 on page 82.

1 Complete the procedure described in Removing the Display assembly on page 59.

2 Pry out the six screw covers from the Display bezel.

3 Remove the six M3 x 10mm screws from the Display bezel.

4 Remove the rubber bumper from the fin on the right side of the Display bezel.

5 Remove the M2 x 4mm flathead screw from the fin on the right side of the Display bezel and remove the bezel.

6 Lift the LCD assembly out of the case top, and place the LCD assembly glass-side down on the bench.

7 Remove the nine M3 x 5mm panhead screws and two M3 x 5mm flathead screws that secure the metal RFI shield, and remove the cover.

8 Remove the rubber pad from on top of the LCD.

NOTE Carefully note the routing and dressing of the LCD ribbon cable and the backlight cables.

9 Remove the tape securing the wiring to the back of the LCD.

10 Remove the two M2 x 4mm screws that secure the Backlight/Inverter PCB in place.

11 Remove the plastic spacer from the LCD.

12 Disconnect the LCD cable from the LCD.

13 Disconnect the two backlight extension cables at the joints between the backlights and the Backlight/Inverter PCB.

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14 Use a flat tool to carefully pry the LCD up and out of its metal frame.Note the arrangement of the foam rubber gasket around the edge of the LCD.

Installing the LCDRefer to Figure 21 on page 82.

CAUTION Do not press down too hard on the LCD; the LCD or window may crack.

1 Use an LCD Installation tool (if one is available) to insert the LCD into its metal frame.a. Place the LCD metal frame in the LCD Installation tool.

NOTE The LCD Installation tool consists of three pieces: the main tool that holds the LCDs metal frame, a long pulling frame that pulls the LCD away from the hinges, and a short pulling frame that pulls the LCD away from the Backlight/Inverter PCB.

The frame fits inside of the pins on the tool, with the hinges by the tools vertical clamp. See Figure 13.

Figure 13 LCD Installation Tool

b. Close the tools vertical clamp on the LCD frame.

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c. Place one long and one short foam piece in the frame, at the sides away from the hinges and Backlight/Inverter PCB.

d. Place the LCD in its metal frame, against the foam pieces.

e. Place the short pulling frame on the LCD, with the pulling frames two pins in the holes at the edge of the LCD away from the Backlight/Inverter PCB.

Figure 14 Pulling Frame Pins in LCD Holes

f. Press the clamp lever on the pulling frame down to pull the LCD away from the Backlight/Inverter PCB.

g. Insert a short foam piece in the space at the Backlight/Inverter PCB side of the LCD.

h. Release the clamp on the pulling frame, and remove the pulling frame.

i. Place the long pulling frame on the LCD, with the pulling frames two pins in the holes at the edge of the LCD away from the hinges.

j. Press the clamp lever on the pulling frame down to pull the LCD away from the hinges.

k. Insert a long foam piece into the space at the hinge side of the LCD.

l. Release the clamp on the pulling frame, and remove the pulling frame.

m. Release the vertical clamp and remove the LCD metal frame from the installation tool.

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2 Connect the two backlight extension cables at the joints between the backlights and the Backlight/Inverter PCB.Each cable can be connected to either backlight.

3 Connect the LCD cable to the LCD.

NOTE Make sure the cables are routed properly, as in Figure 15.

Do not place the LCD cable on top of the backlight extension connectors; this can affect display brightness.

Figure 15 Display Cable Routing

4 Install the plastic spacer on the LCD.

5 Secure the Backlight/Inverter PCB in place with two M2 x 4mm screws.

6 Connect the two backlight extension cables.

7 Secure the wiring to the back of the LCD with tape.

8 Place the rubber pad in the LCD metal frame, on top of the LCD.

9 Secure the metal RFI cover in place with nine M3 x 5mm panhead screws and two M3 x 5mm flathead screws.

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10 Install the LCD assembly in the case top.

11 Install the Display bezel and secure it with a M2 x 4mm flathead screw in the fin on its right side and six M3 x 8mm screws around the bezels edge.

12 Install the six screw covers in the Display bezel.

13 Complete the procedure described in Installing the Display assembly on page 60.

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Display BacklightsRemoving the Display backlightsRefer to Figure 21 on page 82.

1 Complete the procedure described in Removing the LCD on page 60.

2 Gently pull each backlight fluorescent tube out of the LCD.

Installing the Display backlightsRefer to Figure 21 on page 82.

1 Gently slide a fluorescent tube in the spaces at the top and bottom of the LCD.

2 Complete the procedure described in Installing the LCD on page 61.

Display Window GlassRemoving the Display windowRefer to Figure 21 on page 82.

1 Complete the procedure described in Removing the LCD on page 60.

2 Remove the rubber Display window gasket.

3 Remove the

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