technical data sheet • microwave oven hoods...
TRANSCRIPT
MICROWAVE OVEN HOODS
DISCONNECT POWER BEFORE SERVICING IMPORTANT-RECONNECT ALL
GROUNDING DEVICES
ALL PARTS OF THIS APPLIANCE CAPABLE OFCONDUCTING ELECTRICAL CURRENT ARE GROUNDED. IF GROUNDING WIRES, SCREWS, STRAPS, CLIPS, NUTSOR WASHERS USED TO COMPLETE A PATH TO GROUNDARE REMOVED FOR SERVICE, THEY MUST BERETURNED TO THEIR ORIGINAL POSITION ANDPROPERLY FASTENED.
GROUNDING SPECIFICATIONSLeakage Current 0.5 mA. (Max.)Ground Path Resistance 0.14 (Max.)
INSTALLATION REQUIREMENTS ELECTRICALPower Source 120VAC, 60Hz.Line Current 14.0Amps. (1600 Watts)Over Current Protection 15-20Amps** Requires 120 volt, 15-20 Amp. parallel, grounded separate
circuit.Working Voltage 105-130 VAC.
MICROWAVE LEAKAGE TEST1. Place 275 ml. water in 600 ml. beaker (WB64 x 5010).2. Place beaker in center of oven glass.3. Set meter to 2450 MHz scale.4. Turn “on” for 5 minute test.5. Hold probe perpendicular to surface being tested and scan
surfaces at rate of one inch/sec.Test the following areas:• Entire perimeter of door and control panel • Viewing surface of door window• Exhaust vents
6. Maximum leakage 4 MW/CM2.
NOTE: Maximum allowable leakage is 5 MW/CM2.4 MW/CM2 is used to allow for measurement andmeter accuracy.
Inform the manufacturer of any oven found to have emission inexcess of 5 MW/CM2. Make repairs to bring the unit intocompliance at no cost to owner and try to determine cause.Instruct owner not to use oven until it has been brought intocompliance.
HIGH VOLTAGE CAPACITORThe high voltage capacitor has an internal shunt resistor toautomatically discharge the capacitor when the oven turns“off”. Under normal operation the capacitor should fullydischarge within 30 seconds.
• TECHNICAL DATA SHEET •STANDARD TEST LOADTest load will be 1 liter (1000 ml) of water with an initialtemperature of 59°~75° in a 1000 ml beaker(WB64 X 0073 orRobonar 14882).
PERFORMANCE TEST1. Record initial water temperature.2. Run at high power for 2:03.3. Record end water temperature.
The minimum difference between the initial and endingtemperature should be: 30°C @ 120V
INTERLOCKS (DOOR Latch Switches)Interlocks are designed as follows:• Secondary - Top switch operated by top latch pawl
connected to line (L) leg.
HOW TO TEST INTERLOCKSDisconnect power, open control panel, and discharge capacitor.Primary1. Check Continuity of Com and N.O.:
• Door Closed - 0 Ω • Door Open - ∞ Ω
MONITOR SWITCHThe monitor switch is located between the top and bottominterlocks. The monitor switch is operated indirectly by thebottom latch pawl.
HOW TO TEST INTERLOCK SYSTEM1. Disconnect power, open control panel, and discharge
capacitor.2. Disconnect monitor switch leads, and test at terminals:
• Door Closed - ∞ Ω• Door Open - 0 Ω
3. Reconnect switch wiring.4. Test Circuit Operation:
A) Connect temporary jumper across relay contacts andprimary switch to simulate shorted switch contacts.Locate convenient connections in circuit to be certainCOM and N.O. terminals are used.
B) Connect OHM meter (Low Scale) across the two lineterminals of appliance power cord. Continuity must show:
• Door Closed - Some Ω • Door Open - 0 Ω
C) Remove 20 Amp. Fuse - Circuit must open (∞ Ohms).If not, check wiring of monitor and interlock circuits.
5. Warning: After test, remove temporary jumpers andreconnect monitor switch leads.
FUSE
HOW TO ADJUST INTERLOCKSThe switch housing is adjustable for door fit and switchoperation.1. Disconnect power, open control panel, and discharge
capacitor.2. Loosen switch housing mounting screw at enlarged hole in
vertical flange.3. Adjust each switch housing for proper switch operation, and
door fit. Retighten screws.4. INPORTANT - CHECK FOR MICROWAVE LEAKAGE
AFTER ANY ADJUSTMENT.
CAUTION!When safety interlocks and monitor switches are repaired orreplaced, check microwave leakage and distance betweendoor and cavity of microwave as described below.
1. Use a piece of paper 0.02 inch thick, 1 inch wide and 4inches long (a dollar bill folded in half twice lengthwise isabout this size).
2. Open the door and place the paper between the door andfront frame of the oven cavity.
3. Close the door to capture it between the door and the cavityfront frame.
4. Draw the paper from between the door and cavity (check atbottom and sides also) if there is resistance to the removalof the paper then the distance is correct.
5. Perform microwave leakage check, if leakage does notexceed 4 MW/CM2 it is performing properly.
AUTOMATIC FAN FEATURE SCHEMATIC DIAGRAMExhaust fan turns "ON" (medium speed) automatically during some surface unit heavy use conditions, (Cannot be turned off manually - will turn off automatically.) May stay on up to 15mins. after range and lower oven controls are turned off.
HOOD THERMOSTATSingle pole thermostat mounted on base plate. Contacts close at approx. 133°F.
BOTTOM THERMOSTATSingle pole thermostat mounted on plate. Contacts open at approx. 302°F.
DOOR ASSEMBLYThe door assembly is serviceable as an assembly or withparts.
IMPORTANT SAFETY NOTICE
THIS INFORMATION IS INTENDED FOR USE BYINDIVIDUALS POSSESSING ADEQUATEBACKGROUNDS OF ELECTRICAL, ELECTRONIC ANDMECHANICAL EXPERIENCE. ANY ATTEMPT TOREPAIR A MAJOR APPLIANCE MAY RESULT INPERSONAL INJURY AND PROPERTY DAMAGE. THEMANUFACTURER OR SELLER CANNOT BERESPONSIBLE FOR THE INTERPRETATION OF THISINFORMATION, NOR CAN IT ASSUME ANY LIABILITY INCONNECTION WITH ITS USE.
E. ANY DEFECTIVE OR MISADJUSTED COMPONENTSIN THE INTERLOCK MONITOR, DOOR SEAL ANDMICROWAVE GENERATION AND TRANSMISSIONSYSTEMS SHALL BE REPAIRED, REPLACED ORADJUSTED BY PROCEDURE DESCRIBED IN THISMANUAL BEFORE THE OVEN IS RELEASED TO THEOWNER.
F. A MICROWAVE LEAKAGE CHECK TO VERIFYCOMPLIANCE WITH THE FEDERAL PERFORMANCESTANDARD SHOULD BE PERFORMED ON EACHOVEN PRIOR TO RELEASE TO THE OWNER.
WARNING!Always be certain the capacitor is discharged beforeservicing. Mechanically discharge by placing an insulatedhandle screwdriver between the diode connection of thecapacitor and oven chassis ground.
NOTE: Use screw head close to capacitor to insureground metal contact.
WARNING! When 20 Amp. fuse is blown due to operationof the monitor switch, the monitor switch must be replaced.Also replace relays and / or interlock switches whencontinuity check shows contacts shorted.
MICROWAVE LEAKAGE TESTA microwave leakage test must be performed any time adoor is removed, replaced, disassembled, or adjusted forany reason.
THE MAXIMUM LEAKAGE IS 4 MW/CM 2.
TO PREVENT ELECTRICAL SHOCK, USE EXTREMECAUTION WHEN DIAGNOSING OVEN WITH OUTERCASE REMOVED AND POWER “ON”. THE HIGHVOLTAGE SECTION OF THE POWER SUPPLY,INCLUDING FILAMENT LEADS IS 4000 VOLTSPOTENTIAL WITH RESPECT TO GROUND.
PRECAUTIONS TO BEOBSERVED BEFORE ANDDURING SERVICING TOAVOID POSSIBLEEXPOSURE TO EXCESSIVEMICROWAVE ENERGY.A. DO NOT OPERATE OR ALLOW THE OVEN TO BE
OPERATED WITH THE DOOR OPEN.
B. IF THE OVEN OPERATES WITH THE DOOR OPEN,INSTRUCT THE USER NOT TO OPERATE THE OVENAND CONTACT THE MANUFACTURERIMMEDIATELY.
C. MAKE THE FOLLOWING SAFETY CHECKS ON ALLOVENS TO BE SERVICED BEFORE ACTIVATING THEMAGNETRON OR OTHER MICROWAVE SOURCE,AND MAKE REPAIRS AS NECESSARY:1. INTERLOCK OPERATION2. PROPER DOOR CLOSING3. SEAL AND SEALING SURFACES
(ARCING, WEAR AND OTHER DAMAGE)4. DAMAGE TO OR LOOSENING OF HINGES AND
LATCHES5. EVIDENCE OF DROPPING OR ABUSE
D. BEFORE TURNING ON MICROWAVE POWER FORANY TEST OR INSPECTION WITHIN THEMICROWAVE GENERATING COMPARTMENTS,CHECK THE MAGNETRON, WAVE GUIDE ORTRANSMISSION LINE AND CAVITY FOR PROPERALIGNMENT, INTEGRITY AND CONNECTIONS.
PUB.NO. 31-41010
Latch Board
Latch Pawl
Primary Interlock Switch(Top)
Monitor Interlock Switch(Middle)
Door SensingSwitch(Botton)
Latch Pawl
PRIMARY
MONITOR SW
DOOR SENSINGSW
TOP SW.BKT.ADJ.
BOTTOM SW.BKT.ADJ.
Printed in ChinaP/NO: MBM51208801
KEY PANEL TESTIf necessary the key panel pads can be verified by a continuity test. For ease of handling, the key panel should be removed and placed on a flat surface. Check continuity between connections at the end of ribbon. (Use high W scale.) 11
1
PADHELPDEFROSTSTART/PAUSEADD 30 SECONDSCLEAR/OFFTURNTABLELIGHTVENTSOFTEN MELTAUTO GRILL
CONN.4-115-95-106-96-106-117-97-108-98-10
PADPOPCORNPOWER LEVELCLOCK BEVERAGETIME COOKTIMERPOTATOCOMBO GRILLOPTIONSAUTO COOKMANUAL GRILL
CONN.1-91-101-112-92-102-113-93-103-114-94-10
MODEL NAMEJVM1665
WARNINGPOWER MUST BE DISCONNECTED
BEFORE SERVICING THIS APPLANCE
MICROWAVE OVEN HOODSWARNING
NEVER TOUCH OR SERVICE THE HIGH VOLTAGECIRCUIT WITHOUT DISCHARGING CAPACITOR BYSHORTING ACROSS ITS TERMINALS. TO AVOIDPOSSIBLE ELECTRICAL SHOCK.
OVEN THERMAL CUT OUT (FLAME SENSOR)The Oven Thermal Cutout is located on the top side of theOven Cavity beside Exhaust duct with a temperature rating of293 °F.(145°C.) The cutout is tightly held to the top of the ovencavity by a spring clip.
NOTE: Oven must be remove from wall. Remove outer case to access part.
STIRRER BLADEThe antenna is air driven and located on the upper side of thecavity. The oven uses a side feed wave guide. The stirrerblade is located on the stirrer cover.
To Service Stirrer Blade1. Disconnect power and open the door.2. Remove 2 screws and turn the stirrer cover forward.3. Remove stirrer cover and the stirrer blade will come with it.
To Service Magnetron Fan and Fan Motor1. Disconnect power and remove grille screws(2).2. Remove grille and Control panel screw(1).3. Remove Control panel and disconnect the Relay and I/O
connector wire. 4. Disconnect Magnetron Thermostat wire.5. Disconnect Filament wire and remove Magnetron screws(4).6. Remove Magnetron.7. Remove the Magnetron Fan and Fan motor screws(2).8. Remove the Fan motor.
To Service Turntable Motor1. Disconnect power and remove bottom plate screws(8).2. Remove bottom plate and disconnect the turntable motor wire.3. Remove turntable motor screws(2) and pull the turntable motor.
To Service Power Transformer1. Disconnect power and remove girlle screws(2).2. Remove grille and Control panel screw(1).3. Remove Control panel and disconnect the Relay and I/O
connector wire.4. Disconnect Filament wire and heater wire(2).5. Remove bottom plate screws(8).6. Remove bottom plate and disconnect the turntable motor
wire, cooktop lamp wire.7. Remove power transformer screws(4) and pull the power
transformer.
• TECHNICAL DATA SHEET •SMART BOARDSMART BOARD is used to serve as an electrical interfacebetween the control and the oven.SMART BOARD is located on the back of the control panelassembly.The SMART BOARD contains the power relay, LVT, ventblower and surface light relays, and other components toperform the proper switching circuits. Several disconnect plugsare also located on the SMART BOARD:• CON 01 - 7 Pin LVT, Oven Lamp, Fan Motor Relay• CON 02 - 9 Pin Vent Fan, Cooktop Lamp, Turntable Motor
Relay
Many diagnostic circuit tests can be made at the disconnectplugs. (Refer to diagnosis flow chart and simplified schematicin mini-manuals.)
VARISTOR REPLACEMENT1. Clip old varistor wires at Green varistor body (leaving two
short leads).2. Replacement varistor has push-on terminals connected.
(Svc271-14)3. Plug new varistor on the cut leads. Check for tighthess.
CONTROL PERFORMANCE TEST• Set Clock-Touch clock pad, enter time of day, AM/PM touch
start pad.• Alternately touch each function pad and enter time or
temperature, selection for the function - also change powerlevels.
• Touch Clear-Off after each function test to clear that funtion.• Repeat procedure for each function to exercise each pad.• Control and display should respond to each entry.• Display should revert to Time-Of-Day after each Clear-Off.
Refer results to Diagnosis Flow Chart.
CAPACITOR AND DIODEThe high voltage capacitor and diode can be serviced throughControl Panel after removing grille.
VENT BLOWEROven must be removed from wall.
REMOVING OVEN FROM WALL(2 PEOPLE REQUIRED)Oven is hooked on metal tabs at bottom of wall mounting plateand fastened to cabinet by (2) top cabinet bolts.
WIRING DIAGRAMCAUTION: Oven weights 56 lbs.
Requires 2 people for removal.1. Disconnect Power Cord, Top vented models-disconnect
duct and remove damper assembly.2. Remove top cabinet bolts(2).3. Pull unit forward slowly providing adequate support to
prevent dropping unit during removal of last top cabinet bolt.
Y N
Y
N
N
N
NN
N
N
YY
Y Y
Y
Y
Y
N
Y N
OPEN DOOR IS OVEN LIGHT "ON"?
TOUCH "OFF" PADS TURN "OFF"?
VENT FAN OR LIGHT "ON" ONLY WHEN PAD TOUCHED
CHECK SMART BOARD 16PIN PLUG• VENT FAN AT 5-12• SURFACE LIGHT AT 6-12
Y N
• XFMR• PLUGS OR• SMART BOARD
REPAIR
CHECK• 120V SUPPLY• IF 20A FUSE BLOWN, CHECK
VARISTOR.• MAGN TCO ALL OK?
REPLACE SMART BOARD
DISPLAY LIT
TOUCH FAN & LIGHT PADS
VENT FAN & LIGHT "ON" AND STAYS "ON"?
ONLY FAN OR
LIGHT WORKS
LARGE WATER LOAD & NEON IN OVEN
• VERIFY XFMR VOLTS OK?
• CLOSE DOOR• RUN CONTROL
PERFORMANCE TEST (SEE TEST)
• DOES IT PASS?
CHECK• LIGHT• DOOR S/W AND MAIN RELAY• WIRING
• CANNOT SET CLOCK• NO OR ONLY SOME PADS WORK• DISPLAY NOT WHAT ENTERED• ERRATIC DISPLAY• NO BEEP• DISPLAY GOES BLANK, FF, RESET• CANNOT CLEAR DISPLAY
CHECK• 120V SUPPLY• 20A FUSE• (IF BLOWN CHECK VARISTOR)• MAGN TCO & OVEN CUTOUT.• CONTROL XFMR VOLTS ALL OK?
• SMART BOARD OR• KEY PANEL
PERFORM KEY PANEL TEST
• WITH OVEN RUNNING CHECK NEON CYCLE
REPLACE SMART BOARD
• OPEN & CLOSE DOOR• LIGHT & BLOWER
STILL ON
• PLUGS• WIRING• LAMPS
• SMART BOARDOR
• KEY PANEL
NO FAN&
NO LIGHT
SMART BOARD
OVEN LIGHT & BLOWER STILL ON
CHECK POWER CONTROL RELAY
TURNED ON
NO OVEN LIGHT&
NO BLOWER
LIGHT & BLOWER ON ONLY WHEN START
PAD TOUCHED
CAUTIONOBSERVE PRECAUTIONS
FOR HANDLING ELECTROSTATIC
SENSITIVE DEVICES
SMART BOARD OR HV SECT
CHK WINDINGS AT PLUG
INTERLOCKS DOOR SWITCH CONTROL
XFMR KEY PANEL OR SMART BOARD
WITH START PAD TOUCHED CHECK
LIGHT/BLOWER 5-12 VDC PLUG
REPLACE SMART BOARD
N
Y N
REPL XFMR
Y
• XFMR PLUGS OR• SMART BOARD
N
REPAIR
TOUCH START
OPEN LIGHT & BLOWER "ON" AND STAYS "ON"?
MW PWR "ON"?(NEON LIGHT)
Y
PROGRAM TIME COOK 30 MIN DOES OVEN
START WITHOUT TOUCHED "START"?
• ONLY LIGHT&
FAN ON• NO MW PWR
REPL SMART BOARD
NORMAL KEY PANELOR
SMART BOARD
LIGHT FAN&
MW PWR "ON"
• SMART BOARD OR
KEY PANEL
• CHANGE TO PWR 5• NEON CYCLE?
Y• CLEAR OFF &
PROGRAM 30 SEC START & TIME OUT
• DOES IT TURN "OFF"?
PUB.NO. 31- 41010
• FAN OR• SMART BOARD
MODEL NAMEJVM1665
9G1
B1
GN1
BL1
Y1
Y2
PK2
BL3
PK3
Y2
BL3
PK2
PK3
R2R3
R2
R3
PK1
Y4
B3
B5
Y5
R4B7
B6
Y7Y4
B5
B8
G3
B8
R5
Y7
B2
B7
Y5
Y6
Y6
R8
W9
LVT
Y4
B4
R5
R8
WARNINGPOWER MUST BE DISCONNECTED
BEFORE SERVICING THIS APPLANCE
RR
4
B4
B5
W1
• CON 03 - 4 Pin Door & Hood TCO Connector• CON 04 - 3 Pin Humidity Sensor Connector
MICROWAVE OVEN HOODS
DISCONNECT POWER BEFORE SERVICING IMPORTANT-RECONNECT ALL
GROUNDING DEVICES
ALL PARTS OF THIS APPLIANCE CAPABLE OFCONDUCTING ELECTRICAL CURRENT ARE GROUNDED. IF GROUNDING WIRES, SCREWS, STRAPS, CLIPS, NUTSOR WASHERS USED TO COMPLETE A PATH TO GROUNDARE REMOVED FOR SERVICE, THEY MUST BERETURNED TO THEIR ORIGINAL POSITION ANDPROPERLY FASTENED.
GROUNDING SPECIFICATIONSLeakage Current 0.5 mA. (Max.)Ground Path Resistance 0.14 (Max.)
INSTALLATION REQUIREMENTS ELECTRICALPower Source 120VAC, 60Hz.Line Current 14.0Amps. (1600 Watts)Over Current Protection 15-20Amps** Requires 120 volt, 15-20 Amp. parallel, grounded separate
circuit.Working Voltage 105-130 VAC.
MICROWAVE LEAKAGE TEST1. Place 275 ml. water in 600 ml. beaker (WB64 x 5010).2. Place beaker in center of oven glass.3. Set meter to 2450 MHz scale.4. Turn “on” for 5 minute test.5. Hold probe perpendicular to surface being tested and scan
surfaces at rate of one inch/sec.Test the following areas:• Entire perimeter of door and control panel • Viewing surface of door window• Exhaust vents
6. Maximum leakage 4 MW/CM2.
NOTE: Maximum allowable leakage is 5 MW/CM2.4 MW/CM2 is used to allow for measurement andmeter accuracy.
Inform the manufacturer of any oven found to have emission inexcess of 5 MW/CM2. Make repairs to bring the unit intocompliance at no cost to owner and try to determine cause.Instruct owner not to use oven until it has been brought intocompliance.
HIGH VOLTAGE CAPACITORThe high voltage capacitor has an internal shunt resistor toautomatically discharge the capacitor when the oven turns“off”. Under normal operation the capacitor should fullydischarge within 30 seconds.
• TECHNICAL DATA SHEET •STANDARD TEST LOADTest load will be 1 liter (1000 ml) of water with an initialtemperature of 59°~75° in a 1000 ml beaker(WB64 X 0073 orRobonar 14882).
PERFORMANCE TEST1. Record initial water temperature.2. Run at high power for 2:03.3. Record end water temperature.
The minimum difference between the initial and endingtemperature should be: 30°C @ 120V
INTERLOCKS (DOOR Latch Switches)Interlocks are designed as follows:• Secondary - Top switch operated by top latch pawl
connected to line (L) leg.
HOW TO TEST INTERLOCKSDisconnect power, open control panel, and discharge capacitor.Primary1. Check Continuity of Com and N.O.:
• Door Closed - 0 Ω • Door Open - ∞ Ω
MONITOR SWITCHThe monitor switch is located between the top and bottominterlocks. The monitor switch is operated indirectly by thebottom latch pawl.
HOW TO TEST INTERLOCK SYSTEM1. Disconnect power, open control panel, and discharge
capacitor.2. Disconnect monitor switch leads, and test at terminals:
• Door Closed - ∞ Ω• Door Open - 0 Ω
3. Reconnect switch wiring.4. Test Circuit Operation:
A) Connect temporary jumper across relay contacts andprimary switch to simulate shorted switch contacts.Locate convenient connections in circuit to be certainCOM and N.O. terminals are used.
B) Connect OHM meter (Low Scale) across the two lineterminals of appliance power cord. Continuity must show:
• Door Closed - Some Ω • Door Open - 0 Ω
C) Remove 20 Amp. Fuse - Circuit must open (∞ Ohms).If not, check wiring of monitor and interlock circuits.
5. Warning: After test, remove temporary jumpers andreconnect monitor switch leads.
FUSE
HOW TO ADJUST INTERLOCKSThe switch housing is adjustable for door fit and switchoperation.1. Disconnect power, open control panel, and discharge
capacitor.2. Loosen switch housing mounting screw at enlarged hole in
vertical flange.3. Adjust each switch housing for proper switch operation, and
door fit. Retighten screws.4. INPORTANT - CHECK FOR MICROWAVE LEAKAGE
AFTER ANY ADJUSTMENT.
CAUTION!When safety interlocks and monitor switches are repaired orreplaced, check microwave leakage and distance betweendoor and cavity of microwave as described below.
1. Use a piece of paper 0.02 inch thick, 1 inch wide and 4inches long (a dollar bill folded in half twice lengthwise isabout this size).
2. Open the door and place the paper between the door andfront frame of the oven cavity.
3. Close the door to capture it between the door and the cavityfront frame.
4. Draw the paper from between the door and cavity (check atbottom and sides also) if there is resistance to the removalof the paper then the distance is correct.
5. Perform microwave leakage check, if leakage does notexceed 4 MW/CM2 it is performing properly.
AUTOMATIC FAN FEATURE SCHEMATIC DIAGRAMExhaust fan turns "ON" (medium speed) automatically during some surface unit heavy use conditions, (Cannot be turned off manually - will turn off automatically.) May stay on up to 15mins. after range and lower oven controls are turned off.
HOOD THERMOSTATSingle pole thermostat mounted on base plate. Contacts close at approx. 133°F.
BOTTOM THERMOSTATSingle pole thermostat mounted on plate. Contacts open at approx. 302°F.
DOOR ASSEMBLYThe door assembly is serviceable as an assembly or withparts.
IMPORTANT SAFETY NOTICE
THIS INFORMATION IS INTENDED FOR USE BYINDIVIDUALS POSSESSING ADEQUATEBACKGROUNDS OF ELECTRICAL, ELECTRONIC ANDMECHANICAL EXPERIENCE. ANY ATTEMPT TOREPAIR A MAJOR APPLIANCE MAY RESULT INPERSONAL INJURY AND PROPERTY DAMAGE. THEMANUFACTURER OR SELLER CANNOT BERESPONSIBLE FOR THE INTERPRETATION OF THISINFORMATION, NOR CAN IT ASSUME ANY LIABILITY INCONNECTION WITH ITS USE.
E. ANY DEFECTIVE OR MISADJUSTED COMPONENTSIN THE INTERLOCK MONITOR, DOOR SEAL ANDMICROWAVE GENERATION AND TRANSMISSIONSYSTEMS SHALL BE REPAIRED, REPLACED ORADJUSTED BY PROCEDURE DESCRIBED IN THISMANUAL BEFORE THE OVEN IS RELEASED TO THEOWNER.
F. A MICROWAVE LEAKAGE CHECK TO VERIFYCOMPLIANCE WITH THE FEDERAL PERFORMANCESTANDARD SHOULD BE PERFORMED ON EACHOVEN PRIOR TO RELEASE TO THE OWNER.
WARNING!Always be certain the capacitor is discharged beforeservicing. Mechanically discharge by placing an insulatedhandle screwdriver between the diode connection of thecapacitor and oven chassis ground.
NOTE: Use screw head close to capacitor to insureground metal contact.
WARNING! When 20 Amp. fuse is blown due to operationof the monitor switch, the monitor switch must be replaced.Also replace relays and / or interlock switches whencontinuity check shows contacts shorted.
MICROWAVE LEAKAGE TESTA microwave leakage test must be performed any time adoor is removed, replaced, disassembled, or adjusted forany reason.
THE MAXIMUM LEAKAGE IS 4 MW/CM 2.
TO PREVENT ELECTRICAL SHOCK, USE EXTREMECAUTION WHEN DIAGNOSING OVEN WITH OUTERCASE REMOVED AND POWER “ON”. THE HIGHVOLTAGE SECTION OF THE POWER SUPPLY,INCLUDING FILAMENT LEADS IS 4000 VOLTSPOTENTIAL WITH RESPECT TO GROUND.
PRECAUTIONS TO BEOBSERVED BEFORE ANDDURING SERVICING TOAVOID POSSIBLEEXPOSURE TO EXCESSIVEMICROWAVE ENERGY.A. DO NOT OPERATE OR ALLOW THE OVEN TO BE
OPERATED WITH THE DOOR OPEN.
B. IF THE OVEN OPERATES WITH THE DOOR OPEN,INSTRUCT THE USER NOT TO OPERATE THE OVENAND CONTACT THE MANUFACTURERIMMEDIATELY.
C. MAKE THE FOLLOWING SAFETY CHECKS ON ALLOVENS TO BE SERVICED BEFORE ACTIVATING THEMAGNETRON OR OTHER MICROWAVE SOURCE,AND MAKE REPAIRS AS NECESSARY:1. INTERLOCK OPERATION2. PROPER DOOR CLOSING3. SEAL AND SEALING SURFACES
(ARCING, WEAR AND OTHER DAMAGE)4. DAMAGE TO OR LOOSENING OF HINGES AND
LATCHES5. EVIDENCE OF DROPPING OR ABUSE
D. BEFORE TURNING ON MICROWAVE POWER FORANY TEST OR INSPECTION WITHIN THEMICROWAVE GENERATING COMPARTMENTS,CHECK THE MAGNETRON, WAVE GUIDE ORTRANSMISSION LINE AND CAVITY FOR PROPERALIGNMENT, INTEGRITY AND CONNECTIONS.
PUB.NO. 31-41010
Latch Board
Latch Pawl
Primary Interlock Switch(Top)
Monitor Interlock Switch(Middle)
Door SensingSwitch(Botton)
Latch Pawl
PRIMARY
MONITOR SW
DOOR SENSINGSW
TOP SW.BKT.ADJ.
BOTTOM SW.BKT.ADJ.
Printed in ChinaP/NO: MBM51208801
KEY PANEL TESTIf necessary the key panel pads can be verified by a continuity test. For ease of handling, the key panel should be removed and placed on a flat surface. Check continuity between connections at the end of ribbon. (Use high W scale.) 11
1
PADHELPDEFROSTSTART/PAUSEADD 30 SECONDSCLEAR/OFFTURNTABLELIGHTVENTSOFTEN MELTAUTO GRILL
CONN.4-115-95-106-96-106-117-97-108-98-10
PADPOPCORNPOWER LEVELCLOCK BEVERAGETIME COOKTIMERPOTATOCOMBO GRILLOPTIONSAUTO COOKMANUAL GRILL
CONN.1-91-101-112-92-102-113-93-103-114-94-10
MODEL NAMEJVM1665
WARNINGPOWER MUST BE DISCONNECTED
BEFORE SERVICING THIS APPLANCE
MICROWAVE OVEN HOODSWARNING
NEVER TOUCH OR SERVICE THE HIGH VOLTAGECIRCUIT WITHOUT DISCHARGING CAPACITOR BYSHORTING ACROSS ITS TERMINALS. TO AVOIDPOSSIBLE ELECTRICAL SHOCK.
OVEN THERMAL CUT OUT (FLAME SENSOR)The Oven Thermal Cutout is located on the top side of theOven Cavity beside Exhaust duct with a temperature rating of293 °F.(145°C.) The cutout is tightly held to the top of the ovencavity by a spring clip.
NOTE: Oven must be remove from wall. Remove outer case to access part.
STIRRER BLADEThe antenna is air driven and located on the upper side of thecavity. The oven uses a side feed wave guide. The stirrerblade is located on the stirrer cover.
To Service Stirrer Blade1. Disconnect power and open the door.2. Remove 2 screws and turn the stirrer cover forward.3. Remove stirrer cover and the stirrer blade will come with it.
To Service Magnetron Fan and Fan Motor1. Disconnect power and remove grille screws(2).2. Remove grille and Control panel screw(1).3. Remove Control panel and disconnect the Relay and I/O
connector wire. 4. Disconnect Magnetron Thermostat wire.5. Disconnect Filament wire and remove Magnetron screws(4).6. Remove Magnetron.7. Remove the Magnetron Fan and Fan motor screws(2).8. Remove the Fan motor.
To Service Turntable Motor1. Disconnect power and remove bottom plate screws(8).2. Remove bottom plate and disconnect the turntable motor wire.3. Remove turntable motor screws(2) and pull the turntable motor.
To Service Power Transformer1. Disconnect power and remove girlle screws(2).2. Remove grille and Control panel screw(1).3. Remove Control panel and disconnect the Relay and I/O
connector wire.4. Disconnect Filament wire and heater wire(2).5. Remove bottom plate screws(8).6. Remove bottom plate and disconnect the turntable motor
wire, cooktop lamp wire.7. Remove power transformer screws(4) and pull the power
transformer.
• TECHNICAL DATA SHEET •SMART BOARDSMART BOARD is used to serve as an electrical interfacebetween the control and the oven.SMART BOARD is located on the back of the control panelassembly.The SMART BOARD contains the power relay, LVT, ventblower and surface light relays, and other components toperform the proper switching circuits. Several disconnect plugsare also located on the SMART BOARD:• CON 01 - 7 Pin LVT, Oven Lamp, Fan Motor Relay• CON 02 - 9 Pin Vent Fan, Cooktop Lamp, Turntable Motor
Relay
Many diagnostic circuit tests can be made at the disconnectplugs. (Refer to diagnosis flow chart and simplified schematicin mini-manuals.)
VARISTOR REPLACEMENT1. Clip old varistor wires at Green varistor body (leaving two
short leads).2. Replacement varistor has push-on terminals connected.
(Svc271-14)3. Plug new varistor on the cut leads. Check for tighthess.
CONTROL PERFORMANCE TEST• Set Clock-Touch clock pad, enter time of day, AM/PM touch
start pad.• Alternately touch each function pad and enter time or
temperature, selection for the function - also change powerlevels.
• Touch Clear-Off after each function test to clear that funtion.• Repeat procedure for each function to exercise each pad.• Control and display should respond to each entry.• Display should revert to Time-Of-Day after each Clear-Off.
Refer results to Diagnosis Flow Chart.
CAPACITOR AND DIODEThe high voltage capacitor and diode can be serviced throughControl Panel after removing grille.
VENT BLOWEROven must be removed from wall.
REMOVING OVEN FROM WALL(2 PEOPLE REQUIRED)Oven is hooked on metal tabs at bottom of wall mounting plateand fastened to cabinet by (2) top cabinet bolts.
WIRING DIAGRAMCAUTION: Oven weights 56 lbs.
Requires 2 people for removal.1. Disconnect Power Cord, Top vented models-disconnect
duct and remove damper assembly.2. Remove top cabinet bolts(2).3. Pull unit forward slowly providing adequate support to
prevent dropping unit during removal of last top cabinet bolt.
Y N
Y
N
N
N
NN
N
N
YY
Y Y
Y
Y
Y
N
Y N
OPEN DOOR IS OVEN LIGHT "ON"?
TOUCH "OFF" PADS TURN "OFF"?
VENT FAN OR LIGHT "ON" ONLY WHEN PAD TOUCHED
CHECK SMART BOARD 16PIN PLUG• VENT FAN AT 5-12• SURFACE LIGHT AT 6-12
Y N
• XFMR• PLUGS OR• SMART BOARD
REPAIR
CHECK• 120V SUPPLY• IF 20A FUSE BLOWN, CHECK
VARISTOR.• MAGN TCO ALL OK?
REPLACE SMART BOARD
DISPLAY LIT
TOUCH FAN & LIGHT PADS
VENT FAN & LIGHT "ON" AND STAYS "ON"?
ONLY FAN OR
LIGHT WORKS
LARGE WATER LOAD & NEON IN OVEN
• VERIFY XFMR VOLTS OK?
• CLOSE DOOR• RUN CONTROL
PERFORMANCE TEST (SEE TEST)
• DOES IT PASS?
CHECK• LIGHT• DOOR S/W AND MAIN RELAY• WIRING
• CANNOT SET CLOCK• NO OR ONLY SOME PADS WORK• DISPLAY NOT WHAT ENTERED• ERRATIC DISPLAY• NO BEEP• DISPLAY GOES BLANK, FF, RESET• CANNOT CLEAR DISPLAY
CHECK• 120V SUPPLY• 20A FUSE• (IF BLOWN CHECK VARISTOR)• MAGN TCO & OVEN CUTOUT.• CONTROL XFMR VOLTS ALL OK?
• SMART BOARD OR• KEY PANEL
PERFORM KEY PANEL TEST
• WITH OVEN RUNNING CHECK NEON CYCLE
REPLACE SMART BOARD
• OPEN & CLOSE DOOR• LIGHT & BLOWER
STILL ON
• PLUGS• WIRING• LAMPS
• SMART BOARDOR
• KEY PANEL
NO FAN&
NO LIGHT
SMART BOARD
OVEN LIGHT & BLOWER STILL ON
CHECK POWER CONTROL RELAY
TURNED ON
NO OVEN LIGHT&
NO BLOWER
LIGHT & BLOWER ON ONLY WHEN START
PAD TOUCHED
CAUTIONOBSERVE PRECAUTIONS
FOR HANDLING ELECTROSTATIC
SENSITIVE DEVICES
SMART BOARD OR HV SECT
CHK WINDINGS AT PLUG
INTERLOCKS DOOR SWITCH CONTROL
XFMR KEY PANEL OR SMART BOARD
WITH START PAD TOUCHED CHECK
LIGHT/BLOWER 5-12 VDC PLUG
REPLACE SMART BOARD
N
Y N
REPL XFMR
Y
• XFMR PLUGS OR• SMART BOARD
N
REPAIR
TOUCH START
OPEN LIGHT & BLOWER "ON" AND STAYS "ON"?
MW PWR "ON"?(NEON LIGHT)
Y
PROGRAM TIME COOK 30 MIN DOES OVEN
START WITHOUT TOUCHED "START"?
• ONLY LIGHT&
FAN ON• NO MW PWR
REPL SMART BOARD
NORMAL KEY PANELOR
SMART BOARD
LIGHT FAN&
MW PWR "ON"
• SMART BOARD OR
KEY PANEL
• CHANGE TO PWR 5• NEON CYCLE?
Y• CLEAR OFF &
PROGRAM 30 SEC START & TIME OUT
• DOES IT TURN "OFF"?
PUB.NO. 31- 41010
• FAN OR• SMART BOARD
MODEL NAMEJVM1665
9G1
B1
GN1
BL1
Y1
Y2
PK2
BL3
PK3
Y2
BL3
PK2
PK3
R2R3
R2
R3
PK1
Y4
B3
B5
Y5
R4B7
B6
Y7Y4
B5
B8
G3
B8
R5
Y7
B2
B7
Y5
Y6
Y6
R8
W9
LVT
Y4
B4
R5
R8
WARNINGPOWER MUST BE DISCONNECTED
BEFORE SERVICING THIS APPLANCE
RR
4
B4
B5
W1
• CON 03 - 4 Pin Door & Hood TCO Connector• CON 04 - 3 Pin Humidity Sensor Connector