06-1997

Colour TV

C25S87B C28S/B C25C7B C28C7B C25S87L C28S7L

SPECIFICATIONS

Reception System ............::ceeee CCIR-| PAL/SECAM

Reception Frequency ..............00 UHF 470MHz~862MHz

VHF 47~170M pape prvendeantd (C25S7L & C28S7L only)

SISIEO SVSLCM aidcesccedosanxnchocoaxeditnsce NICAM

Mains HAD Ut iicsescctncerssoten eden seteiaiees AC 230V, 50Hz

Power Consumption ............:00e 11 8W (C25S7B, C25C7B & C25S7L) 124W (C28S7B, C28C7B & C28S7L)

ACTidl ANDUE steensccexsninrsiaivencsssauarete 75Q

Intermediate Frequency ...... ee Video: 39.5MHz

Sound: 33.5MHz

AUGIO-OUIDUT scaactaiscdetioseseacenaciae 12W+12W (left + right) (Music Power) 12W (sub-woofer — C28S7B, C28C7B & C28S7L only)

DD EAKEN wicakn cociiaeaeee eee 2x11.5x5cm_ (left + right) g10.5cm (sub-woofer — C28S7B, C28C7B & C28S7L only)

VAS S | Siatecs etrcesarranncnseanionicsnbnnanas EE6

PICture TUDE wesmncscseatinieeiels. A59ECF50X05 59cm(V)/25” (C25S7B/L & C25C7B) A66EHJ43X01 66cm(V)/28” (C28S7B/L & C28C7B)

Cabinet dimensions.................:::06 68cm x 45cm x 52cm =~ (C25S7B, C25C7B & C25S7L) (approx. W x D x H) 74cm x 47cm x 56cm = (C28S7B, C28C7B & C28S7L)

WV SIG ccsiccens cuneate ehiarecnteete: 26.2Kg (C25S7B, C25C7B & C25S7L) (approx. Not incl. stand) 32.5Kg (C28S7B, C28C7B & C28S7L)

MITSUBISHI ELECTRIC EUROPE BV

Copyright © 1997 Mitsubishi Electric UK Ltd. ELECTRIC

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CONTENTS

GENERAL NOTES | 3 SARE LY -PREGAU TIONG: wexcstessxicteatenneeneoes daadetsvicteccutaritesesncntondar ies tare acieincesia aacneieneees 3 STS ah VV AEG S ctocicee aa rcrce eas dace aires es ees ad iicanaing wna aregemn ann sean ina deee 3 POTN WV LUNI ces aiecteis a seia Sec ot eels Sten etal leidn Sears eescineme ay dete nantes naw ee cor tae aii Pay uaa deeeman a uapeapeess 3 Leakage CUnERUCNECK scpsteicu 2 ti sisal soietact ab attiaatarateteeseanecubed ced wicehcochehecananenense stato 3

CONTROLS AND CONNECTORS sisccuscacns hcnsia det ocietiaimacnatcecaaa wise naedesaiestueacniedeaniaetudilensnbaceoits 4 FOUN IG elas shrek ester aces cee aeeteb aetna a sate sag nance ceazenc ed ecu e sean a euanaedantieieeaeaetanenee aes 4 PRGA PG listscsssicteseg tcc each ns iat heidn dare ccna os tacealadmasndiane sdibacs senoue cre tale ack te cate nauscet oa: 4

REQUIRED BQUIPIWEN YT sicnj.c hose te ccesccinteeevcnssseesuavenceeseuae de eaima nab uah sake Subanteunteadbahaatienaes 5 WIE ASUMING CQUIDIMONL scncsiactets satencetedcaeanneuenanteeanevedannci leven eocvoint a wane ennes ives useenesssanGarerdiacinee 5 ESE SIG I eal Sta ceras i Ba eine cebegattdec ta leeataliag Lecoaantonainn an alweseai bude aeceha eae ea eaeetetnatondl al eaincean aia 5

CONNEC TING ILEADS rica viene eeitaceacertetasieuttretatiawesbieoentaniaas cevancans Gavin on osnaeteanneae Macnatanieaaivas 5 IQS MIMICAON Ge cee sccnigi connect iene iat ctosancebaia incu acemteteeduanbsautaiiiiani ie dnd etacaiaceeaasnaseannsemeicinatenbus 5 PAC TOVSS SING co sssintdaa irtseSedaten aire donwiertceveasiotnda vada baanmtaenint avanti tiaksatiidsa ine aau athe aietutel wanes 6

SERVICE ADJUSTMENT PROCEDURES 7 INTRO DUG THON Sissies oncetacs hicatagi¥sauctinassA sau taeinad stench iasetn ve donsnucdasananiantusn ttivntabatecdennnanosek 7

Basic Adilisiment Dl OCOOUl GS astisicc ictersratecuiaveciiattlaaanatinsstjanseeyovcenestucemndr nme eanne 7 SOMWAre:- GIAQGNOSIICS SYSIOIN scaccersavuasvavenetneueeantsdodanhawsiyutuannainbiseutesivreeiaelal iadstheren eae 7

Be ERO ATA erase issicse a tea hae ene gaa veep aat te ana ae teats caiet aaa Net 8 IAN SAG RCE EOIN cixsoice tervt 355 i sviane aos nedpebloupsiota te tatesoaiinssa yaad dawianvcont cation Gr cahleabnwaanan: 8 OPTIONS and VG COde-CESCHIDLION S iciisors Acct nce tcedancacarnuteneneetcsseaceveneceh cenaendedearawa(sannest 9

BE RS satires apenpehtentmesneanetnncaeeaiteain win chalewtel unde gas aaa ede ene ere dariea 10 FA AGC wes crcchacinnteonna tenia wutvntcent loan ai caananthgnnsanaiobutinsaesieae ea an wes ie tadeat ae canada eaNs 10

Oa el Se: a OO] Wl aeereree rt nner mre ttre er rete fr ener cer rane nrc er etnee ten te ona ne enna ae ee eee 10 eg @) tal f= ( © clpemenet re re arent ee ery hn ren PoE RES OMT Receae eer a ee ee eer eee

DEPLECTION CIRC TS chee cate totais atin aaedceueaath aad Ranieri napa wee 10 MR a aca asses rents tata sad wees ssa eae penn ates de wean ape aha ance asateataenuetaeeaes 10 VERTICAL BREATHING CORRECTION: wssisciticcseintwatan, mck neape eaatieeadatentdvagedesiwieds geek FORIZONTAL CE INE cts cures ichta ne teen cs aodes caneboeseSuasdocek sancenehceacentuctuananaacteerenmiauss ete VO FORIZONTAL WID GW Pa iossaiam dice ia chadietaiasacbcc cca toadupraanidielebenainann dae kinmieanabty he eadtaannentes setae EV BG aaa eesc ea cece scstanstategetasdewndlfalaccedsosaietaaassnueeias Meciuteaeseenaaianeeees eed HEIGHT-AND LINEARITY stcicscet.cttettne ti veadatandeineciede dans aden deenonre an sate ieee Se: Sotho WER TIC AIC EIN ie tc cacansecacot har elen aia pddn ent autetssdcanc saa aera anew ccuaneneuer remaeneneest wend

GBT CIRCUIT S ivcauseranecnsiceanevasdcietadensteatetaduegsinadnotsagiencdaeein 1iadene i ta enieegiedeiateld tier he A ALAN GE anc ustincs Seavey antec sense calcevaceayankameseanseainanedratepuaydalobiseaais bane eaauanieare neat ee Ss isscensctncss echarsc aside cata a earshot eam tae ia a aaaarxtbctansseatenaaneausade aidtiaaes sutine 1A

5 |B) se @ Bi | (61 8 | fl Serre seen net anee eet ter errr mee treme Re nena ne ri eee Te ne eee are 12 BRIGHTNESS AND CONTRASE sascasactnicavancana nadaicthutenioithenavavinbietereiebaavecaviiwtaanteien re COLOUR OUTPUT, sa cctiveuitesnrevsaunicecss te rcurccieloni daaeasin occas eh eaheneutudeletaadaietinlt boule

OPERATION GUIDE 14

PARTS LIST 16 PTS cise pote ccs Beene ei a trate astectia ed cene asties ne vaanent ceaatolags otausseatnte atau re weenie daiataas 16

WOGEESDECIIC EES snsicitsttcumancencustianseabstsmeanbohacuvnirt iat eesiatacial mea iahoete teil aaa dead tats 16 SENG saccharin oh ene cease cn sac ada eue pant anancunadsgaaaaen iaieahesaaienantanatan tees 16 Sal Sy echseatcasotcnamsee steeds ta ciate Saale ad staan eae aicleel heats toe ae nahh atG eos, Reta eas 16 COMPOMENE TOlCrAN CES: arse shared Gytiad essa eect uss ssvudaavecsunceetdangceaneouiauraeniunianeheneveaaebar ones 16

bo la A 1G at a7 2 Bhs I 0 Pen ee ee ee ne ene eee 16

PCB LAYOUT DIAGRAMS 24

IC BLOCK DIAGRAMS 31

SCHEMATIC DIAGRAMS 34 PT a 2s es wc ete ates een yes Lea go te seas aetna eet ne ea ... 34 ES] g (21 2 | eeu arene ance Ree ne a ete Seren tn ene atte are Ene Ne S EE am eee es ene eer eee eee eT 34 SET VICING: F FECAUTIOINS vx arxeesteasvch lata etind hus sists ealad aes iaine paced aahesevtamamdaraigustenntonsaetegassana ae 34 COMPONENT AMIONMANOW: ateces pe seseins ctnetes ahha a heheloaedtawheeticaissastoetentnasclad asatctoge mameetahaeeten ois 34

SCHEMATIC. DIAGRAM S .sxeaseatwaviesdonceieataesauictabasesasveiceielireaecnaiaaess INSIDE BACK COVER

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1 GENERAL NOTES

1.1 SAFETY PRECAUTIONS

1.1.1. General Warnings

1. Observe any cautions and safety related notes located inside the receiver cabinet and on the receiver chassis.

2. An isolation transformer should be used between the television receiver and the AC power

supply point before any test or servicing is performed on a LIVE chassis television receiver.

3. Operation of these receivers outside the cabinet or with the back cover removed involves a

shock hazard from the receiver power supplies. Work on the receiver should not be attempted

by anyone who is not familiar with the precautions necessary when working on high voltage equipment.

4. Do not install, remove or handle the picture tube unless shatter-proof goggles are worn.

People not so equipped should be kept away while the picture tube is being handled. Keep the

picture tube away from the body while handling.

5. | When service is required, observe the original lead dressing. Extra precaution should be given

to assure correct lead dressing in the high voltage area. Where a short-circuit has occurred,

replace those components that indicate evidence of overheating.

1.1.2 X-RAY Warning

Under fault conditions the CRT can generate X-rays. The use of a lead apron is recommended if available.

When replacing the CRT only use the designated replacement part as it is a critical component with

regard to X-rays. No high-voltage adjustments are provided.

1.1.3 Leakage Current Check

Before returning the receiver to the customer it is recommended that the leakage current be measured according to the following method:

With the AC plug removed from the AC source, place a jumper across the live and neutral pins. Turn

the receiver AC switch on. Using an OHM-METER, connect one lead to the shorted AC plug and touch the other lead to each exposed metal part (antennas, screw heads, etc.) in turn, particularly

any exposed metal part having a return path to the chassis. Any resistance below a value of 1MEG

OHN indicates an abnormality which requires corrective action.

1.2 CONTROLS AND CONNECTORS

1.2.1. Front Panel

Mains switch Headphone connector

Remote control sensor Channel or Volume up / down buttons

Standby/Power on light Standby Channel or Volume selector

fig. 1.2A Front panel controis

1.2.2 Rear Panel

c L/G/S/I AUDIO OUT .. SORTIE AUDIO ——— Controlled SALIDA AUDIO : i Audio output

SCART 1 SCART 2 PERITEL 1 PERITEL 2

peniTVi1 = AV1 = AV2/S _ Peritv

Aerial socket (750hm)

fig. 1.2B Rear panel connectors

201816141210 8 6 4 2

BG oot 6

2119171513119 7 5 3 1

fig. 1.2C Scart socket pin details

Signal Audio out R

Audio in R

Audio out L

Audio Earth

Biue Earth

Audio in L

Blue in

Function switch

Green Earth

Not connected

Green in

Not connected

Red Earth

Blanking Earth Red in Blanking Video out Earth

Video in Earth

Video out

Video in

Socket Earth

Spec. 0.5V /10kO 0.5V /10kQ 0.5V /10kO

0.5V /10kO 0.7Vpp / 750

0.7Vpp / 750

0.7Vpp / 750

1Vpp / 750 1Vpp / 750

Spec. Audio out R 0.5V/104«Q Audio in R 0.5V/1kQ Audio out L 0.5V/1kQ Audio Earth

Blue Earth

Audio in L 0.5V/10

Blue in 0.7Vpp /750 Function switch

Earth

Not connected

Not connected

Not connected

Chroma Earth Not connected Chromain 0.3Vpp (burst)/75Q Not connected Video out Earth

Luminance Earth Video out 1Vpp / 732-2 Luminance in 1Vpp / 73-2 Socket Earth

1.3 REQUIRED EQUIPMENT

1.3.1 Measuring equipment

° Oscilloscope

° Signal generator

° DC milliammeter

° DC voltmeter

° Frequency counter (optional)

1.3.2 Test signals

° PAL Cross-hatch, Black raster and White raster

° PAL G-card

° PAL Colour-bar with the specification as in figure 1.3A below:

fig. 1.3A Split-field colour bars (with 100% window)

1.4 CONNECTING LEADS

1.4.1 Identification |

Connecting leads are generally identified by the colours of their wires according to figure 1.4A below:

Colour Code = BLACK A Example: _ 6 > > ©

BROWN iB Bg a ie RED C roo © > ‘am

ORANGE D : YELLOW E ; , aa

fig. 1.4A Connecting lead identification chart

ye / \

Red Black Yellow Red

1.4.2 Lead dressing

Leads must be dressed as shown in table 1.4B and the diagram (fig. 1.4C) below. The leads are

routed or clamped so that they do not come close to any heat generating or high-tension parts.

The anode Jead wire is routed such that no tension is applied to the anode cap. If the mounting angle

of the anode cap and the route of the anode lead wires are changed, return them to the initial angle

and route.

Clamp No Lead P

25" 28"

Clamp No Lead

25" 28"

ANODE [1 : Ca FOCUS 16 raat —«diSO

20, 19 17, 16**, 6” 17, 16**, 6

DY

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18" FC DA 9,7,8and.. |9,7,8 and...

fear 3, 2* (SP301) or 4 (SP392)_| or 3, 4 (SP392)

Dp INA «20, |

om Iwano CT CTTTTCdSCCCS *= SINGLE LOOP, ** = DOUBLE LOOP

table 1.4B

Lead-dressing details

PCB-MAIN

PCB-TEXT/BLK

PCB-AUDIO POWER |

19) PCB-CPS

fig. 1.4C Lead-dressing diagram. PCB-SOUND

| 6

2 SERVICE ADJUSTMENT PROCEDURES

2.1 INTRODUCTION

Most service adjustments to these models are made using the remote control (figure 2.1A) with the TV in service mode. The adjustment data is stored in an EEPROM (IC702).

a’. MITSUBISHI RM-08201

2) OFF-TIMER OPTION on

OKA |Q-

Cancel a ©

NO Increase adjustment item number

4 Decrease data value

Increase data value

8 Decrease adjustment item number

Lo ee

Oo)

0 Write to EEPROM MENU

Ge a fig. 2.1A Remote Control Unit

DISP FO ©QO J © O° + Toggle between OPTIONS and VC4J displays |

2.1.1 Basic adjustment procedure

1. Turn the power on and enter service mode — press MENU to display the PICTURE menu then

immediately key-in 2-3-5-7.

2. Press the « button to toggle between the OPTION and VCJ adjustment displays (figs. 2.1B and

2.1C):

Chassis CRT-bias up/down

request bit Software version

G200. 00 VHS -09|—— pata value

Data value

Adjustment item Adjustment item

fig.2.1B Options adjustment display fig.2.1C VCJ adjustment display

Oo; Press buttons 2 or 8 to increase or decrease the adjustment item number.

4. Press buttons 6 or 4 to increase or decrease the data value.

5. After completing your adjustments, press button “O” to write the data to the EEPROM.

To cancel a change, press button “1” before writing the data to the EEPROM. Ai/ adjustments

since the last EEPROM write will be lost.

2.12 Software diagnostics system

The microcontroller software contains basic diagnostic tools to help with fault-finding. Two microcontroller pins are used to indicate problems with the EEPROM (IC702) and the VCJ (IC2 01).

EEPROM -— C702 Should the eeprom fail to respond in some way to the system or if the data transfer to IC701 is

continually incorrect then pin 25 of the microcontroller (1C701) will be pulsed continuously to inclicate such a problem exists.

TT

The system will continue to try and establish proper IC communications with the eeprom for up to

30 seconds. The system will then carry out a hardware ‘reset’ and continue trying for a further 30

seconds. This cycle will repeat indefinately. This allows the system to operate in a limited way giving

the service engineer time to trace the problem.

vcJ —1C201

Should IC communication with the VCJ fail for some reason then pin 24 of IC701 will be pulsed

continuously.

The system will try to establish °C communication with the VCJ for up to 30 seconds. The system

will carry-out a hardware ‘reset’ and continue again for a further 30 seconds. This cycle will repeat

indefinately. This allows the system to operate in a limited way giving the service engineer time to

trace the problem.

H-Timebase

Should the H-Timebase not start then the green power-on LED will flash.

This provides an indicator that the VCJ is functioning but some problem exists in the H-Drive output

section of the chassis. The system will keep trying to start the H-Timebase for up to 30 seconds. The

system will then carry-out a hardware ‘reset’ and continue again for a further 30 seconds. This cycle

will be repeated a maximum of 10 times. After 10 attempts the system will stop.

2.2 EEPROM DATA

If you have replaced the EEPROM (IC702) or if for any reason the adjustment data has become

corrupted it will be necessary to initialise the EEPROM.

2.2.1 = Initialising the EEPROM

A lf necessary, switch off by the Main switch.

2. Connect pin 54 of IC701 or pin 1 of connector HE on PCB-SOUND or DOLBY to ground via a

100 ohm resistor.

3. Turn the mains switch on and wait 5 seconds.

Remove the resistor and the TV will then automatically power up after about 4 seconds. A

blank picture will be displayed.

Press the MENU button until the MAIN menu appears and then immediately key-in 2-3-5-7,

If necessary, press the * button to select the OPTIONS adjustment display.

Press buttons 2 or 8 to select the adjustment code.

Adjust the data value for each code as shown in the table below using buttons 4 or 6.

NOTE: start the adjustments at DBY.

Code DBY WID ODT TUN AUD STD SYS SPK MNP VOL HYP SCP FMP

OG: 202: a2) 7 70 “B” models 0 O 08 X XX 1B 23

‘L’ models 0 0 0 1 0 4 2 1 #70 %X X 1B 23

table 2.2A Data values for the OPTIONS aajusiments.

=

ONO Oo

9. Press the 0 button to write the changes to the EEPROM.

10. Press the * button to select the VCJ adjustment display.

11. Press buttons 2 or 8 to select the adjustment code.

12. Adjust the data value of each code using buttons 4 or 6 according to the table below:

Code | MTX SHA TNT BGD NTD SCD PCD HPT HPS HPX VBC

Value -07 001 OO O10 001 O11 O11 O38 O05 -07 -31

table 2.2B Data values for the VCJ adjustments.

2.2.2 OPTIONS and VCJ code descriptions

vos 16x9 - SW.RGB-MATRIX TUN TUNER TYPE BLUE DRIVE AUD AUDIO SYSTEM GREEN DRIVE STD RECEPTION STANDARD RED DRIVE SYS COLOUR SYSTEM CONTRAST SPK SPEAKER SW ENABLED BRIGHT MNP NICAM PRESCALE COLOUR SATURATION FFT | FAST TEXT/ TOP TEXT SHARPNESS VOL VOLUME PRESCALE NTSC TINT HYP HYPERSOUND BG CHROMA DELAY OFFSET SCP SCART PRESCALE NTSC (358 & 443) CHROMA DELAY FMP — FMPRESCALE SECAM-LUMA-DELAY DBY DOLBY PAL-LUMA-DELAY WID WIDESCREEN H-PHASE-50 PAL ODT OSD DE-INTERLACE - TEXT MODE H-PHASE-60 NTSC H-PHASE-TEXT H-PHASE-SECAM H-PHASE-RGB EXT P-AMP-16:9

0 VH5 V-AMP-50

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1 VBC V-B-CORRECTION

2 PAS ~~ P-AMP-50

3. PIS P-TILT

4 LIN ~ V-LIN

9 CC5 C-CORRECTION-50

6 HWS H-AMP

7 VSS V-SHIFT-50

8 VH6 V-AMP-60

9 PA6 P-AMP-60

10 PT6 P-TILT-60

11 CC6 C-CORRECTION-60

12 HW6 H-AMP-60

13 VS6 V-SHIFT-60

14 TB5 TOP-BLANKING-50

15 BB5 BOTTOM-BLANKING-50

16 BWS H-BLANKING-WIDTH-50

17 BP5 H-BLANKING-PHASE-50 \ not applicable ©

18 TB6 TOP-BLANKING-60 to these models

19 BB6 BOTTOM-BLANKING-60

20 BW6 H-BLANKING-WIDTH-60

21 BP6 H-BLANKING-PHASE-60

Table 2.2C OPTIONS and VCJ code descriptions

Picture format dependant parameters

2.3. VIF CIRCUITS

2.3.1. RF-AGC

VR101 (near the tuner)

1. Supply an RF G-card signal (or use an off-air broadcast).

2. Check the AFT is on for the current channel.

3. Adjust VR101 so that the picture and sound exhibit no noise, beat or intermodulation distortion.

2.4 POWER CIRCUIT

2.4.1 B+ VOLTAGE

VR951 (on main PCB next to the SMT)

Supply a G-Card signal.

Push the OPTIMUM button on the remote control.

Connect a DC voltmeter’s “+” lead to TP91 on the MAIN PCB and the “—’” lead to GROUND.

Adjust VR951 so that the voltage is 145+2V.

2.5 DEFLECTION CIRCUITS

Make the following adjustments 2.5.1 to 2.5.7 using 50Hz signals as described then repeat steps 2.5.3

to 2.5.7 using 60Hz signals. Replace all the adjustment codes mentioned with the 60Hz equivalent, for

example, use HP6 (for Horizontal Phase 60) in place of HPS (for Horizontal Phase 50).

2.5.1 CRT BIAS

IMPORTANT NOTE Before making any adjustments, if you have changed the CRT, FLYBACK TRANSFORMER or made

any changes in the deflection circuits; adjust the CRT bias:

1. Supply a black raster signal to the RF or AV input.

2: Select 4:3 screen mode.

3. Connect an oscilloscope to the junction of R673 and W603.

4. Adjust the SCREEN control on the Flyback Transformer to give a voltage of 175V as shown in

figure 2.5A.

ee

175V

Ground =

figure 2.5A

2.5.2 VERTICAL BREATHING CORRECTION

Code: 1 VBC (V-B-CORRECTION)

1. Select the VCJ adjustment display.

ee Set the adjustment code to VBC with buttons 2 or 8 on the remote control.

3. If necessary, adjust the data value to “-31” using buttons 4 or 6 on the remote control.

2.5.3 HORIZONTAL CENTRE

Code: HP5 (H-Phase-50)

Supply a G-Card or cross-hatch signal.

Select the VCJ adjustment display.

Set the adjustment code to HP5 with buttons 2 or 8 on the remote control.

Adjust the horizontal position with buttons 4 or 6 on the remote control.

| 40

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2.5.4 HORIZONTAL WIDTH

NN >

Code: HW5 (Horizontal Width)

Supply a G-Card or cross-hatch signal.

Set the VCJ adjustment code to HW5. |

Adjust the horizontal width with the 4 or 6 buttons for approximately 7% overscan.

2.5.5 EAST-WEST PCC

saa cae a

on

Code: CC5 (Corner Correction)

Code: PT5 (Parabola Tilt)

Code: PA5 (Parabola Amp)

Supply a cross-hatch signal.

Set the VCJ adjustment codes to CC5, PT5 and PAS in turn and adjust as follows:

Adjust the value of corner correction CC5 to give the best picture.

Adjust the parabola tilt control PT5 so that the upper and lower distortions of the left and right

vertical lines are symmetrical (fig 2.5B).

Adjust the parabola amp control PA5 so that the left and right vertical lines are straight (fig 2.5C).

Check the horizontal centre and horizontal width adjustments and readjust if necessary.

2.5.66 HEIGHT AND LINEARITY

OY a IN ie

6.

Code: VH5 (V-Amp-50)

Code: LIN (V-Lin)

Supply a G-Card or (cross-hatch plus circle) signal.

Set the VCJU adjustment code to VH5.

Adjust the circle to a true circle with buttons 4 or 6 on the remote control.

Set the VCJ adjustment code to LIN.

Adjust the linearity to be the same for the top and bottom halves of the circle using buttons 4or 6 on the remote control.

Repeat the steps above as required to give the best result for both adjustments.

NB The Linearity need not be adjusted again for the 60Hz deflection adjustments.

2.5.7 VERTICAL CENTRE

Code: VS5 (V-SHIFT-50)

Supply a G-Card or cross-hatch signal.

Set the VCJ adjustment code to VS5.

Adjust the centre line of picture to be within 3mm from the vertical centre on the screen wsing buttons 4 or 6 on the remote control.

Now repeat steps 2.5.3 to 2.5.7 using 60Hz signals. Replace all the adjustment codes mentioned with

the 60Hz equivalent, for example, use HP6 (for Horizontal Phase 60) in place of HPS (for Horizontal

Phase 50).

2.6 CRT CIRCUITS

2.6.1 WHITE BALANCE

Code: BDR (B-Drive)

Code: GDR (G-Drive)

Code: RDR (R-Drive)

Supply a white raster signal.

Select the VCJ adjustment display.

Set the adjustment codes to BDR, GDR and RDR in turn and pre-adjust each to “+05”.

Adjust codes BDR and RDR to give a good white balance.

.6.2 FOCUS

FOCUS control on the Flyback Transformer

NW AOD o

1. Supply an RF G-card signal (or use an off-air broadcast).

2. Adjust the FOCUS control for the best overall focus.

2.7 VIDEO CIRCUITS

Perform the following adjustments after adjusting the Deflection circuits. Allow the TV to warm up for

20 minutes before proceeding

2.7.1. BRIGHTNESS AND CONTRAST

CRT Bias (Screen) control on the Flyback Transformer

Code: BRI (Brightness)

Code: CON (Contrast)

BEAM CURRENT (using connector TP adjacent to the Flyback Transformer)

ip Connect a black raster signal.

2. Connect an oscilloscope to the junction of R673 and wire link W603.

3. Adjust the SCREEN control on the Flyback Transformer to give a voltage of 175V as shown in figure 2.7A.

175V

Ground =. =: =: a a

fig 2.7A

Change the external signal to a G-Card.

Set the VCJ adjustment code to COL with buttons 2 or 8 on the remote control.

Adjust the data value to “-31” with buttons 4 or 6 on the remote control.

Set the VCJU adjustment code to BRI.

Adjust using buttons 4 or 6 so that a slight difference in brightness can be seen between blue

and black areas.

9. Connect a DC ammeter set to a 3mA range: “+” lead to connector TP pin 1 on the MAIN-PCB

and the “—” lead to connector TP pin 3.

10. Set the VCJ adjustment code to CON with buttons 2 or 8 on the remote control.

11. Adjust the beam current using buttons 4 or 6 on the remote control to give a reading of

1200+20)A.

12. Check, and if necessary, readjust Brightness (code BRI).

13. Repeat steps 1 to 3 above to check bias voltage is still 175V and that the CRT Bias Up/Down

Request bit is 00 (see fig 2.1C on page 7).

| 42 |

Sa a aS

2.7.2 COLOUR OUTPUT

Make this adjustment only after adjusting the White Balance, Brightness and Contrast.

Code: COL (Colour Saturation)

Code: TNT (NTSC Tint)

Supply a PAL RF Colour-bar signal.

Set the VCJ adjustment code to TNT and check the value is “OO”

Set the VCJ adjustment code to COL.

Connect an oscilloscope to the junction of R673 and IC660 Pin 9 (BLUE-OUT) on PCB-CRT.

Adjust the colour using buttons 4 or 6 until the waveform is as shown in figure 2.7B.

Increase the colour value by 5 steps.

Set the VCJ adjustment code to TNT. Adjust the tint value to “04”. Og oN

13 |

3 OPERATION GUIDE

MENU SYSTEM

Press the MENU button display either the Picture, Sound, Special or Setup menu. If necessary, press a colour button to select the

desired menu. Use & or W to select the control and + or

<1— to adjust the control.

PICTURE AND SOUND MENUS With the Picture or Sound Menu on the screen,

oress the OPTIMUM button to return the

selected control to the factory pre-set level.

During normal TV viewing, pressing the

OPTIMUM button will return a// the picture and

sound settings except VOLUME, LOUDNESS and EFFECT (wide-sound) to the factory pre-set

levels.

Press the DISPLAY button to exit.

SPECIAL MENU Auto-Subtitle: set to ON this displays Teletext

subtitles constantly.

Set to OFF to remove subtitles. Set to Mute to display only when sound is muted. Format: set to 4:3, AUTO or 16:9 Speakers: set to ON or OFF to switch on or off

the internal speakers if an external sound

system is being used. Standard TV: set to ON to have the TV reset to Optimum its Picture and Sound settings

automatically on switch-off.

Set to OFF to memorise these settings permanently.

SET-UP MENU System: toggle the colour system between AUTO, PAL, 60PAL, Secam, NTSC358 or NTSC443. This temporarily overides the colour system set in the Install (tuning) Menu. Any

change is lost when you change channel or select AV. The NTSC settings only apply to AV

modes and Secam has no use on this model.

AV2 Output: select the output on AV2 to be

either the TV signal or the input to AV1. AV2 Dubbing: switch ON or OFF to enable the AV 1 to AV2 dubbing function to operate in

standby mode.

TUNING SYSTEM

AUTO-TUNING The Auto-tuning system will tune in, store, name and correctly position all available stations

within your reception area. If you have a VCR connected to the TV (by the aerial socket) you should insert a commercially recorded videotape and set the VCR to PLAY.

1. Press the INSTALL button. 2. If desired, press the RED button to select

either English or Gaeilge (Irish Gaelic) as

an OSD language. Press the GREEN button twice to start

Auto- Tuning.

It will take a few minutes for the TV to find, name and store all the available stations. When

Automatic Tuning is completed the TV will

switch to programme position 1. lf the VCR was “found” during Automatic Tuning it will have been stored in position 6 or 7.

Moving and Deleting stations

1. Press the INSTALL button.

2. Press the YELLOW button. The Shuffle

Menu appears.

3. Use the number buttons to select the

station you want to move or delete.

4. To move a station:

Press the YELLOW colour button to

highlight this programme position in red.

Use the number buttons to select the new

programme position, the station moves

automatically.

5. To delete a station:

Press the GREEN button twice.

6. Repeat steps 3 to 7 for other stations.

7. Press the INSTALL button to exit to the

INSTALL menu.

Programme Skip This TV has a “skip” feature which allows you to

preset a programme number so that it is not

selected when changing channels using & or

Vv. 1. Press the INSTALL button.

2. Press the YELLOW button. The Shuffle

Menu appears.

3. Use the number buttons to select the programme position you wish to “skip”.

4. Press the BLUE button to toggle Skip ON or OFF.

5. Repeat steps 3 and 4 as required.

6. Press the INSTALL button to exit to the

INSTALL menu.

Renaming Programmes

1. Press the INSTALL button.

2. Press the YELLOW button. The Shuffle

Menu appears.

3. Use the number buttons to select the

programme position you wish to rename

4. Press the RED button. A pointer appear

under the first character in the name.

5. Use 1+ or —1- to change the characer

above the pointer. A blank space = “-”.

Press the RED button to move the point r

to the next character. i

7. Repeat steps 5 and 6 to complete the

name. 8. Repeat steps 3 to 7 for other programmes. 9. Press the INSTALL button to exit to the

INSTALL menu.

MANUAL AND FINE TUNING 1. Press the INSTALL button. 2. Press the BLUE button for Manual Tuning.

3. Use the number buttons to select a station.

4. lf necessary, use & or © to highlight the

band control and select UHF, VB1 or VB2

(Irish models only).

. Use A or Y to select the tuning bar.

6. Start manual tuning by pressing 4+ or —-

. The tuning bar turns RED while searching

then YELLOW after a station is found. Press

<1+ or —1- again if this is not the right

station. If the tuning bar does not turn red, press & or W to highlight AFT and switch it ON by pressing 1+. Then go back to step 4.

7. To Fine Tune: press & or VW to select AFT

and switch it OFF by pressing 4+ or -. 8. Press VW to select the tuning bar and adjust

the fine tuning by holding 4+ or —-.

9. When you have finished, press the STORE

button to memorise the new settings.

9. Press the INSTALL button to exit to the INSTALL menu.

AV SYSTEM

This TV has two Scart sockets, AV 1 is full spec. with RGB input, AV2 has Y-C inputs instead of

RGB. The TV also has 2 RCA sockets for controlled

audio output. |

Selecting AV mode from TV mode TV-AV button: cycles around AV1, AV2 and TV

modes.

The AV input is either composite or RGB/Y-C depending on what was previously selected.

RED button: selects AV1 then toggles between

composite and RGB input. GREEN button: selects AV2 then toggles between composite and Y-C input. Returning to TV mode

Pressing the TV-AV button or any number button or the & or W buttons will return the set

to TV mode even when Scart pin 8 Is high. See “Set-Up Menu” for setting the output of AV2 and switching on standby dubbing.

NICAM STEREO >

The I/II button operates all functions: press to

display the current Nicam mode, press again

while the OSD is on-screen to force Nicam Off,

press to select language during a dual-sound

broadcast.

OFF TIMER

SETTING THE TIMER 1. Press the OFF-TIMER button, the screen

shows E] 00. | 2. Press the button again to start the clock at

90 then make it count down in ten minute

steps until you see the time you want

3. When the display diappears, the timer is

set.

TO CANCEL THE TIMER Press the OFF-TIMER button until the display shows zero, or press Standby.

TO CHECK THE REMAINING TIME

Press the OFF-TIMER button once. For the last 10 minutes the display will apo ear in

red every minute then continuously for the last

minute.

15 |

4 PARTS LIST

4.1 NOTES

4.1.1 Model-specific parts

As this service manual covers more than one model, the Service Parts List indicates where certain

parts are model-specific. If there is no such indication then the parts are common to all models covered by this manual.

25” = C25S7B, C25C7B, C25S7L; 28” = C28S7B, C28C7B, C28S7L

B = C25S7B & C28$S7B; L=C25S7L, C28S7L; C=C25C7B, C28C7B

Other indications are combinations of the above.

4.1.2 Ordering

In order to expedite delivery of replacement parts, please specify:

Model number, Serial number

| Part Number, Description, Quantity

Unless full information is provided a delay in execution of the order may result.

4.1.3 Safety

Safety Critical components are shown thus: A\ and must be replaced with original Mitsubishi parts.

4.1.4 Component tolerances

Component value tolerances are coded as shown the table below:

+80 +100 +30

-0 -10

| 46 |

4.2 SERVICE PARTS LIST

SYMBOL PART No PART NAME

CRT A 255P828010 CRT A H25P006010 CRT

ICs (and retaining clips)

IC101 270P341020 IC IC201 270P254040 IC [C202 270P263010 IC IC301 275P130010 IC IC351 270P259010 IC

IC351 596D850010 HOLDER-IC IC3B1 270P259010 IC IC3B1 597D329010 HOLDER-IC IC401 270P261010 IC IC401 596D850010 HOLDER-IC

IC551 272P406010 IC IC660 270P207010 !IC-CRT-OUTPUT IC660 596D884010 HOLDER-IC IC701 274P755050-~—sIC IC702 274P747010 IC-C-MOS

(C7701 275P115010 IC IC7702 =274P171010 IC IC901 272P514010 IC IC951 270P260010 IC IC951 596D837010 HOLDER-IC

TRANSISTORS (and retaining clips)

Q102 260P749050 TRANSISTOR Q105 260P748030 TRANSISTOR Q106 260C603010 TRANSISTOR Q107 260C603010 TRANSISTOR Q108 260C603010 TRANSISTOR

Q251 260P748030 TRANSISTOR Q252 260P748030 TRANSISTOR Q253 260P748030 TRANSISTOR Q256 260P748030 TRANSISTOR Q301 260C604020 TRANSISTOR

Q302 260P748030 TRANSISTOR Q303 260P748030 TRANSISTOR Q304 260P748030 TRANSISTOR Q305 260P748030 TRANSISTOR Q306 260P748030 TRANSISTOR

Q307 260P749030 TRANSISTOR Q308 260P749030 TRANSISTOR Q320 260C604020 TRANSISTOR Q321 260P748030 TRANSISTOR Q322 260P749050 TRANSISTOR

Q3A07 260C604020 TRANSISTOR Q450 260P748030 TRANSISTOR Q451 260P387010 TRANSISTOR Q501 260P748030 TRANSISTOR Q551 260P422010 TRANSISTOR

Q552 261P007010 TRANSISTOR Q552 596D884010 HOLDER-IC

| 17 |

DESCRIPTION

A59ECF50X12 25" A66EHJ43X01 28"

TDA4472-C MC44031 E36E-4 TEA6415C MSP3410D-B3 TDA7263

TDA7263 28" 28"

TDA8171

TEA2031A TEA5101B

9291N7B1***/A50 ST24C16CB1

SAA5261PS/107 51T24C02AB1 TEA 2261 TDA8137

JA101-Q,R JC501-R

DTA124ES/UN4112 L DTA124ES/UN4112 DTA124ES/UN4112 L

JC501-R JC501-R JC501-R JC501-R DTC124ES

JC501-R

JC501-R

JC501-R | 28" JC501-R

JC501-R 28"

JA101-Q JA101-Q DTC124ES JC501-R JA101-Q,R

DTC124ES 28" JC501-R 2502236-0,Y JC501-R 2502482

S2055N

i

MODELS

SYMBOL PART No PART NAME DESCRIPTION MODELS

Q601 260P748020 TRANSISTOR JC501-Q,R Q6E2 260P748030 TRANSISTOR JC501-R 28" Q6E3 260P748030 TRANSISTOR JC501-R 28" Q6E4 260P748030 TRANSISTOR JC501-R 28" Q6E5 260P748030 TRANSISTOR JC501-R 28"

Q6E7 260P748030 TRANSISTOR JC501-R Q6E8 260C255040 TRANSISTOR 2SA950-Y (FORMED) Q701 260C559050 TRANSISTOR 2S$C1740S-E (FORMED) Q702.~=—s- 260P748030 TRANSISTOR JC501-R Q703. 260P749030 TRANSISTOR JA101-Q

Q704 260P748030 TRANSISTOR JC501-R Q705 260P749030 TRANSISTOR JA101-Q Q706 260P749030 TRANSISTOR JA101-Q Q707 + 260P748030 TRANSISTOR JC501-R Q708 260P748030 TRANSISTOR JC501-R

Q710 260P748030 TRANSISTOR JC501-R Q711 260P748030 TRANSISTOR JC501-R Q71i2 260P748030 TRANSISTOR JC501-R Q713. +260P748020 TRANSISTOR JC501-Q,R Q714 260P748030 TRANSISTOR JC501-R

Q715 + 260P748030 TRANSISTOR JC501-R Q716 260P748030 TRANSISTOR JC501-R Q717. + 260P748030 TRANSISTOR JC501-R Q718 260P748020 TRANSISTOR JC501-Q,R Q7701 260P749030 TRANSISTOR JA101-Q

Q7702 260P748030 TRANSISTOR JC501-R Q7706 260P748030 TRANSISTOR JC501-R Q901 261P006010 TRANSISTOR S2000N Q901 596D884010 HOLDER-IC Q902. 260P748030 TRANSISTOR JC501-R

Q951 260P748030 TRANSISTOR JC501-R Q952. += 260P630010 TRANSISTOR 2SD2012 Q952. 596D837010 HOLDER-IC

DIODES D102 264P370010 DIODE 1N4148 D201 264P370010 DIODE 1N4148 D251 264P460020 DIODE EQA02-05CD/RD5.1EB1 D252 264P460020 DIODE EQA02-05CD/RD5.1EB1 D253. 264P460020 DIODE EQA02-05CD/RD5.1EB1

D254 264P460020 DIODE EQA02-05CD/RD5.1EB1 D255 264P460020 DIODE EQA02-05CD/RD5.1EB1 D256 264P460020 DIODE EQA02-05CD/RD5.1EB1 D257 264P460020 DIODE EQA02-05CD/RD5.1EB1 D258 264P460020 DIODE EQA02-05CD/RD5.1EB1

D301 264P370010 DIODE 1N4148 D302 264P370010 DIODE 1N4148 D303 264P370010 DIODE 1N4148 D304 264P370010 DIODE 1N4148 D305 264P370010 DIODE 1N4148

D306 264P370010 DIODE 1N4148 D307 264P370010 DIODE 1N4148 D401 264P374020 DIODE 1N4003ID

| 48

SYMBOL PART No PART NAME DESCRIPTION MODELS

D402 264P370010 DIODE 1N4148 D501 264P463020 DIODE EQA02-08C/RD8.2EB2 D502 264P370010 DIODE 1N4148

D503 264P370010 DIODE 1N4148 D504 264P371010 DIODE BYD33G/A52R

D505 264P375020 DIODE BY228 (FORMED) D506 264P378020 DIODE BYW96E (FORMED) D507 264P371010 DIODE BYD33G/A52R D508 264P371010 DIODE BYD33G/A52R D509 264P371010 DIODE BYD33G/A52R

D525 264P371010 DIODE BYD33G/A52R D560 264P370010 DIODE 1N4148 D561 264P493020 DIODE RD39FB2 D562 264P370010 DIODE 1N4148 D563 264P370010 DIODE 1N4148

D601 264P370010 DIODE 1N4148 D655 264P370010 DIODE 1N4148

D656 264P370010 DIODE 1N41748 D657 264P370010 DIODE 1N4148 D658 264P458030 DIODE RD3.6EB2

D6A7 264P372010 DIODE BYV9O6E D6B2 264P371010 DIODE BYD33G/A52R D701 264P460020 DIODE EQA02-05CD/RD5.1EB1 D702 264P460020 DIODE EQA02-05CD/RD5.1EB1 D703 264P461070 DIODE EQA02-06D/RD6.2EB2

D704 264P370010 DIODE 1N4148 D705 264P370010 DIODE 1N4148 D706 264P465040 DIODE EQA02-12AB/RD13EB1,B2 D707 264P370010 DIODE 1N4148 L D708 264P370010 DIODE 1N4148 L

D7701 264P370010 DIODE 1N4148 D7C91 264P584020 DIODE SML1216W-C,D

D901 264P376010 DIODE BYW56 D902 264P376010 DIODE BYW56 D903 264P376010 DIODE BYW56 D904 264P376010 DIODE BYW56

D905 264P371010 DIODE BYD33G/A52R D906 264P372010 DIODE BYV96E D907 264P481060 DIODE RD3.0FB2

D908 264P370010 DIODE 1N4148 D909 264P481060 DIODE RD3.0FB2

D951 264P378020 DIODE BYWS96E (FORMED) D952 264P378020 DIODE : 3 BYW96E (FORMED) D953 264P377020 DIODE BYW95B (FORMED) D954 264P377020 DIODE | BYW95B (FORMED) 28" D955 264P461080 DIODE EQA02-06E/RD6.2EB3

D956 266P010020 IC-DIODE uPC574J-K D957 264P463090 DIODE EQA02-09D/RD10E D959 264P377020 DIODE BYW95B (FORMED)

i9 |

SYMBOL PART No PART NAME DESCRIPTION MODELS

COILS AND TRANSFORMERS L101 325C164070 COIL-PEAKING 0.47pH-J L102. + 325C161010 COIL-PEAKING 6.8uH-K L103. + 325C121030 COIL-PEAKING 10yH-K L104. + 323P175070 COIL-VIF VIF=39.2MHz, Cin=9PF L106 §325C121080 COIL-PEAKING 10pH-K

L201 321C031090 COIL-RF 33yH-K L205 325C 120010 COIL-PEAKING 1pH-M

L301 325C120010 COIL-PEAKING 1pH-M L302. + 325C 120010 COIL-PEAKING 1H-M L303. 325C120010 COIL-PEAKING 1uH-M

L304. = 325C 120070 COIL-PEAKING 3.3yH-K L305 325C120070 COIL-PEAKING 3.3uH-K L308 325C120070 COIL-PEAKING 3.3uH-K L309. = 325C120070 + COIL-PEAKING 3.3uH-K L310 325C120070 COIL-PEAKING 3.3uH-K

L314 325C120070 + COIL-PEAKING 3.3yH-K L315 325C120070 COIL-PEAKING 3.3yH-K L330 325C 120070 + COIL-PEAKING 3.3yH-K L331 325C120070 COIL-PEAKING 3.3yH-K L332 325C120070 COIL-PEAKING 3.3yH-K

L3C06 325C120070 COIL-PEAKING 3.3yH-K L3C07 325C120070 COIL-PEAKING 3.3uH-K L401 411P001070 LEAD-FERRITE L502 3210030010 COIL-RF 1p)H-K L503. 411D009020 CORE-FERRITE

L504 409P749010 COIL-PCC-CHOKE 15uH L505 409P748010 COIL-PCC 1H L551 333P032020 COIL-HORIZ-LIN L560 325C402000 COIL-PEAKING 39H L701 325C121070 COIL-PEAKING 22uH-K

L702. 325C121070 COIL-PEAKING 22uH-K L703. = 325C 121030 COIL-PEAKING 10uH-K L7701. 410P003010 FERRITE-LEAD 17702. 410P003010 FERRITE-LEAD L7707 325C162050 COIL-PEAKING 100yH-K

L901 321C030050 COIL-RF 2.2uH-K L903. 411P001070 LEAD-FERRITE L905 = 411P001070 LEAD-FERRITE L951 325D059060 COIL-PEAKING 390)1H-K L991 351P047020 LINE-FILTER Z855557A

L995 351P038030 LINE FILTER 18D290BF A T5514 334P243040 TRANS-FLYBACK

7552. 336P017010 TRANS-HORIZ-DRIVE SRW16/14PS04 A 901 350P646040 TRANS-POWER 25" A 901 350P646050 TRANS-POWER 28"

A 409P564040 COIL-DEGAUSSING 25" A 409P564050 COIL-DEGAUSSING 28'

[ 20 | ;

SYMBOL PART No PART NAME

RESISTORS -— fixed and variable

R114 103P465010 R-METAL

R131 103P465090 R-METAL

R212 103P906060 R-METAL

JZ. R352 103P378060 R-FUSE

Z\ R353 103P378060 R-FUSE

Z\ R83B01 103P378060 R-FUSE

4. R38B02 103P378060 R-FUSE

R405 109P129010 R-METAL

R508 102P243020 R-CEMENT-METAL-SUS

R511 102P228050 R-CEMENT-WIRE-SUS

ZL. R512 103P432050 R-FUSE-METAL

ZL. R513 103P397090 R-FUSE

LZ R514 103P397090 R-FUSE

R573 103P906010 R-METAL

R574 103P905070 R-METAL

R575 103P905050 R-METAL

R5M1 109P912080 R-COMPOSITION

R5M3 109P912080 R-COMPOSITION

ZL R671 103P447080 R-FUSE-METAL

Z\ R671 103P448040 R-FUSE-METAL

ZL. R692 103P391030 R-FUSE

ZL . R694 103P390010 R-FUSE

R765 103P905030 R-METAL

R921 109D074010 R-CEMENT-METAL

R954 103P907080 R-METAL

R955 103P904070 R-METAL

Z\ R981 109P913050 R-COMPOSITION Z\ R982 109P913050 R-COMPOSITION

R991 102P087040 R-CEMENT-WIRE

Z\ R992 109P911090 R-COMPOSITION

VR101 127C380080 VR-SEMIFIXED

VR102 127C380080 VR-SEMIFIXED

VRQ951 127C380090 VR-SEMIFIXED

CAPACITORS

C510 MELP420010 C-M-PLASTIC-PP

C5A3 172P952040 C-M-PLASTIC-PP

C5B3 172P951030 C-M-PLASTIC-PP

C904 185D059040 C-ELECTROLYTIC

L\ C981 189P091010 C-CERAMIC-AC

Z\ C991 189P180030 C-M-POLYPROPYLENE-AC

CONNECTORS AND SWITCHES

J251 452C080020 21 PIN-SCART

J252 452C080020 21 PIN-SCART

J352 4510177010 PIN-JACK-2P

J3C51 4510082040 JACK-MICROPHONE

ZL\ J601 4490126010 CRT SOCKET

S7C02 = 432P089020 SW-KEY-BOARD

S7C03 432P089020 SW-KEY-BOARD

$7004 432P089020 SW-KEY-BOARD S7C05 432P089020 SW-KEY-BOARD

Z\ $991 4320081010 MAINS SWITCH

a1 |

DESCRIPTION

1/4W 12K-F

1/4W 27K-F

0.4W 51K-F

1/4W 3.3-J

1/4W 3.3-J

28'

28"

1/4W 3.3-J 1/4W 3.3-J

1/6W 8.2K-G 450 SW 3.9K-K/J 1O0W 2.7

OW 1K

1/2W 0.82-J

1/2W 0.82-J

0.4W 33K-F

0.4W 22K-F

0.4W 18K-F 1/2W 2.2M-K 1/2W 2.2M-K

TW 0.68-K, J TW 2.2-K, J

28" 25"

1/2W 100-J

1/2W 10-J

0.4W 15K-F L

SW 1.8K-K, J 0.4W 160K-F

0.4W 8.2K-F 1/2W 6.8M-J

1/2W 6.8M-J 10W 4.7-K

1/2W 470K-J

1/5W B10K-M 1/5W B10K-M 1/5W B20K-M

KP/MKP375 1600V 0.018yF-J 2000V (1700VP-P) 9100pF 2000V (1700VP-P) 3300pF 385V/400V 150uF AC400V E4700pF-M 0.22uF-M 275V(AC) X2

035-098-4505 035-098-4505 YKC21-5508

033 055044

151-ESB-92D21B (ROO)

MODELS

SYMBOL PART No PART NAME DESCRIPTION MODELS

MISCELLANEOUS CF101 296P024040 CERAMIC-TRAP TPS6.0MB CR5M1 149P008010 CR-MULTIPLE 470pF 3.6M-K

4. F991 283D047040 FUSE T2A

ZA, PC951 268P068010 PHOTO COUPLER TCDT1124G ZX. RP991 265P071050 POSISTOR PTH451C41BG180N

oF 101 296P144010 SAW-FILTER OFWJ3950M B,C SF101 296P 144020 SAW-FILTER OFWK3953M L SF301 296P145010 SAW-FILTER OFWK9350M SP391 480P660060 SPEAKER Right SP392 480P660060 SPEAKER Left

SP393 480P383040 SPEAKER Woofer 28" TU101 295P430010 TUNER-TV U1343/IEC B,C TU101 295P430020 TUNER-TV UV1315/IEC L X301 MELP433010 QUARTZ-CRYSTAL 18.432MHz X601 285P142020 QUARTZ-CRYSTAL 17.734475MHz

X602 285P143020 QUARTZ-CRYSTAL 14.31818MHz X701 285P139040 QUARTZ-CRYSTAL 12MHz X7701 285P139040 QUARTZ-CRYSTAL 12MHz

ZV 2551 299P201080 PROTECTOR 5000 As 2552 299P193010 PROTECTOR 2000

Z7C01 = =939P580020 {iR-PHOTO-MODULE TFMK 5330 AN 7951 299P193040 PROTECTOR 3150 4. 2952 299P193070 PROTECTOR 5000 AV 2953 299P193090 PROTECTOR 1600

PCB ASSEMBLIES

ZX 920A433001 ASSY-PWB-MAIN 28B, 28C 4. 920A433002 ASSY-PWB-MAIN 28L 4. 920A434001 ASSY-PWB-MAIN 25B, 25C 4. 920A434002 ASSY-PWB-MAIN 25L

A, 9210206001 ASSY-PCB-PWB-CRT 25" 4. 921C206002 ASSY-PCB-PWB-CRT 28" ZV 9210212001 ASSY-PCB-PWB-CPS 20° ZN 9210212005 ASSY-PCB-PWB-CPS 28"

A. 9210213001 ASSY-PCB-PWB-TEXT 25" 4. 9210213004 ASSY-PCB-PWB-TEXT 28" 4. 921C216001 ASSY-PWB-SOUND 25° AN 9210216005 ASSY-PWB-SOUND 28" AV 9210272002 ASSY-PWB-AUDIO-PWR 28"

MECHANICAL AND COSMETIC A, 2460162010 AC-POWER CORD/UK-PLUG

290P082010 REMOTE-CONTROL

641B742010 FRAME-AUDIO-POWER 28" 669D218070 SCREW-M5x35 SEMS CRT FIXING 669D220030 SCREW-TB 3x10

669D221040 SCREW-TB 4x12

669D221060 SCREW-TB 4x16 BACK COVER FIXING 4. 7000612020 ASSY BACK-COVER 25B 4. 7000612030 ASSY BACK-COVER 28B “4. =700C613010 ASSY BACK-COVER — 25L

[ 20

SYMBOL PART No PART NAME DESCRIPTION MODELS

ZA, 700C613020 ASSY BACK-COVER 28L

Z\ 7000613070 ASSY BACK-COVER 25C ZA, 700C613080 ASSY BACK-COVER 28C

701D610070 ASSY-CABINET-FRONT 25B, 25L

701D610080 ASSY CABINET-FRONT 28B, 28L

701D611030 ASSY-CABINET-FRONT 25C

701D611040 ASSY-CABINET-FRONT 28C

752B027020 PANEL-FRONT-LEFT 25C

752B027030 PANEL-FRONT-RIGHT 25C

752B029020 PANEL-FRONT-LEFT 28C

752B029030 PANEL-FRONT-RIGHT 28C

7540062010 KNOB-POWER 754C063010 KNOB-PUSH 770B221020 UNIT-TV-STAND except C

770B222010 UNIT-CABINET-STAND 25C

770B222020 UNIT-CABINET-STAND 28C

801C340030 PACKING CASE 25"

801C340040 PACKING CASE 28"

803A464010 CUSHION SET 28"

803A465010 CUSHION SET 25"

831D296030 PACKING-BAG 25"

831D296040 PACKING-BAG 28"

871C603030 | SERVICE MANUAL

872C 127050 IB-COLOUR B,C

872C 127060 IB-COLOUR L

H92D001033 LEG (1 PIECE) Trolley stand except C H92D001034 SHELF Trolley stand except C H92D001035 CASTORS (SET OF 4) Trolley stand except C H92D001036 SCREW KIT Trolley stand except C

H92D001037 BACK PANEL Trolley stand except C

H92D001044 BASE SHELF Cabinet stand 25C

H92D001045 BASE SHELF Cabinet stand 28C H92D001046 TOP Cabinet stand 25C H92D001047 TOP Cabinet stand 28C

H92D001048 SIDE TRIMS (PAIR) Cabinet stand 25C

H92D001049 SIDE TRIMS (PAIR) Cabinet stand 28C H92D001050 BACK PANELS (PAIR) Cabinet stand 25C, 28C

H92D001051 GLASS DOOR Cabinet stand 25C, 28C H92D001052 MIDDLE SHELF Cabinet stand 25C, 28C

H92D001053 SIDE PANEL Cabinet stand 25C, 28C

H92D001054 CASTOR KIT (Incl. hinges) Cabinet stand 25C, 28C

H92D001055 FIXING KIT (All screws, etc.) Cabinet stand 25C, 28C

23 |

PCB DIAGRAMS — MAIN-PCB 1/2

1 2 3 TU101

)

PWB-MAIN C736

R113 EWr | : W116_Wi13 m | W102 — af . io W105R112_ RiO1

ir cio. i mMSsnli ly) cpsnl igin; | INO J251 in Ror

N WN

Oo AZ6Z

——- a AZ68.~—CO R276 CL62°

| R270 _ pee 246 wors ce602 N Ip nese. 0 W276 C203 D256 i = 4 C204 & | NR205 5 | czos N | |= | bo R255 |g — OU

bee )| R257 ~ | ei@ am £0 Loa, SN gy] @

o-8 , = FN al OF cru W253 NN | oH Oo | ig an m | io N | } ) ‘ < Ol cai

ee NS we ie

N

R278 D252

ho. R265

| i 4 R263

= 9 Q256C514

> S

'c40g3 ceso / R579

__WS16C5A3

2 4

MAIN-PCB 2/2

oO N 6o co =k ©

MAIN o | wis 8 . , eo O nv in C745 6 _W703 | o|N = N Bes C714 u c7oB8 W728

oO ne eT ee c|O «| is a) alos Sol ae SCL SDA 716 ram c BRI NIN nN nes —

rere = C706 —|C)@/ele sn S| HA } 4 in 2 c oc

NO F | | “ \ x | i ‘O) O Lori NIN i seen QloOl = }

¢ NE "3/8 W224 SIS Sr le IE wage yee ; a 10 bo per o W275

; N - L206 oom vo @— or |@L206

(\s O} | Sagi \, Gi W253

ee ees ain Tx B L256 | ag G Oo x ae

a) 3 3|8 X602 8 2 35 ~ 3/0} \ 22

—lrg R207 é pests salary 1 GA 6 W731

W953 C951

C959 2

W320 R729

953 R951 R728

wa14DE w915

cg981 R982

R981

RS25

DSO6é 8

: cee 8s ty R820 ws0s -h |

iF A921 | , yt mi csoi pe02

TH csig csis >} xy | _ t A | | S :

C917 pgs01 or | 2

; \

ps0 1° KB 3

| eran LL R908 ! > >

C903 SS pDs09g cs02 |

25

MAIN PCB LOCATIONS

C509 E4

C510 E4

C5A3 *F4

C5B3 =F 4

C904 FQ

C981 E10

CF101 A2

CF102 B2

CF301 C2

CR5M1 £E1

D102 A1

D201 C6

D202 C6

D203 C6

D204 C6

D251 D1

D252 C1

D253 D1

D254 Al

D255 B1

D256 B1

D257 B1

D258 B1

D301 D8

‘D401 D2

D402 C6

D501 D4

D502 C6

D503 C6

D504 G1

D505 F3

D506 ~=ES3

D507 E3

D508 E2

D509 G2

D514 E1

D525 F5

D560 E4

D561 E4

D562 E4

D563 E4

D601 B7

26

2¥67

PCB CPS

1664

A0SC VEL HVSIEL

2661

2669

) |

9664

1664

\66du

__ 973 R730 RTC nese 63082

Z7C01 DIC91 57002 : $7003 | S7C04 57005

974

6'S'L'93'S'7'E'?S'1'0

C+O CloOsCE

MS NIVW

166S x

|| #2 790€9

909E1 76004

Loge7 ©9969

199E9 |

SSE

Isoer

2 7

PCB SOUND

IC7701

IC7702

D7701

L7701

L7702

L7704

L7705

L7706

L7707

Q7701

Q7702 Q7703 Q7704

Q7705

Q7706 X7701

I21IGZI6, Cel. 2 CM acy ot ore Morte,

R348

7702

RIS

C7701 pate

ome 7724 FF

3 R7730 (10 RT731

R7732 —_J NO Bh

R7719 — ZRINBT TZ TB LRINTDSA\CTUS SL7704

17124 771 = ~~

oo 1716 5.7705 < iia

= —L7706 C7714 __ 73

re

PCB CRT

6

ae R693

D658

0 u) o

oO

a i=] oO N a

a oO a

rm

S8O0VEID

SZOEM

W3037

PWe-AU D=PWR

30

6 IC BLOCK DIAGRAMS

IC660

1EA5101 IC101

TDA4472 Ottset Comp. Loop vco AFC

(Optional) _ Filter f_—N Switch

AFC

VIF Video

Cage

Vs

Cree Tuner

Take Over Point

Intercarrier

SIF2 (FM.NICAM)

Input Switch

SIF 1

Cacc

IC201 MC44031

: 4)

SYSTEM | SELECT

LUMADELAY.

Seeereettaap V7 COL. DIFF. STAGE

31

IC951

TDA8137 IC401

TDA8171

a: FLYBACK GENERATOR

PO AMPLIFIER

WER

M) THERMAL

REF PROTECTION VOLTAGE

4)

IC3A1, IC3A2, IC3B1

IC551 TDA7263

TEA 2031 5 oS

L-OUT

IC301

MSP3410 SDAIN S!D 12S DAIN 12S WS

S DA OUT 12S DA OUT

Cae) SBUS Interface de

S1i~S4 l2SUR l2SUR Sound IF

AIN1+ iy oie AN FM2 SPEAKER L DACM L Loudspeaker

ANA IN2+ eo LOUD- DACM R ‘ NICAM B SPEAKER R

Mono IDENT OFP

MONO IN HEADPHONE L DACA L Headphone

SC1 INL HEADPHONE R DACA R SCART1

SC1INR

SC2 INL SC1 OUT L SCART2 = SCART 1

SC2 IN SC1 OUT R

SC3 IN L SC2 OUT L ae INR SCART 2

SC2 OUT R

3 2

IC901

TEA2261

ERROR AMPLIFIER

ENTE VCC MONITORING

VREF (2. 49V

POSITIVE 1.2A QUTPUT STAGE max )

PROCESSOR u 4)0UT

NEGATIVE -2A OUTPUT STAGE (max)

PRIMARY PULSFS

CURRENT LIMITATION

12-13 D

IC7701

SAA5261PS Voo1 Vop2 Voos BLAN PON COR BGR

RGBREF

'35 [30 [20 yar [32] 33 DRAM

RESET DISPLAY REFRESH AND TIMING

ODD/EVEN

24 TO 18 PACKET 26 HAMMING PROCESSING Nepce ce

DECODER ENGINE

EAST/WEST PDI

pes DISABLE LCB DECODE

DISABLE 8/30 TELETEXT asi

PHASE ACQUISITION SYSTEM <2 DISABLE DSR

LOCKED AND CONTROLLER ere DECODING Der POWER-UP IN LIST

rs ee her be DISABLE LCB DECODE

F VPS wss SDA (NVRAM)

SERIAL-TO ACQUISITION ACQUISITION i2C-BUS 44 SCL (NVRAM) a a AND AND INTERFACE |. 50] e DECODING DECODING ae SDA

SCL

25 BLACK

DATA SLICER TELETEXT INPUT CLAMP DISPLAY HSYNC AND CLOCK OR AND SYNC CLOCK

REGENERATOR VPS CONTROL SEPERATOR GENERATOR VSYNC

IREF

ANALOG 7 12 Mie DIGITAL CORICRATOR OSCGND

GENERATOR CONVERTER

CvBS OSCOUT —OSCIN Vss1 Vsse Vssa

33

7 SCHEMATIC DIAGRAMS

7.1 NOTES

7.1.1 General

° DC voltages are measured from the points indicated to circuit ground.

° Waveforms are for a PAL colour bar signal.

° Test Points are shown as: “TP6A’”, etc.

° This is a basic circuit diagram — receivers are subject to modification due to continuous engineering improvement.

7.1.2 Servicing Precautions

The A\ symbol indicates components with characteristics critical to safety and performance.

These parts must only be replaced with parts having identical values and characteristics — refer to the Service Parts List for the correct Mitsubishi part numbers.

Do not compromise the safety of the receiver by improper servicing.

7.1.3. Component Information

SPECIFIC SYMBOLS CAPACITORS

—¢q— Zener diode Value without spec. pF for values >1, uF for values <1

—\q—_Varicap

Posistor

Voltage without spec. 50V

Tolerance without spec. electrolytic: +20%, others 10%

C= +0.25pF, D = +0.5pF, F = +1pF,

G=+2pF or 2%, J=+5%, K=+10%, M=+20%,

P=+100-0%, Z=+80-20%, Q= +30 -10%, T = +200 -0%

without spec. Ceramic

(MF) — Polyester

(PP) — Polypropylene film

Thermistor

Fusible resistor

{Ob os Air gap

(ALM) — Aluminous electrolytic

TF) — Twin film

(SC) | Semiconductor ceramic

(MP) — Metalised paper

Pp

F

-w-+ Part (e.g. resistor) on copper side of PCB

ao aa =

RESISTORS Value withoutspec. Q, K=KQ, M=MQ

Wattage without spec. 1/4W or 1/6W (chips: 1/10W)

Tolerance without spec. +5%

D=+0.5%, F=4+1%, G=+42%, J=+5%, K= +10%

Type without spec. Carbon film

(S)

(MB) (CE) Cemented

(W) Wire wound

Ceramic filter

( MP Metalised plastic film

(MM Metalised polyester

(PS (TAN) or (TANT

—N— Electrolytic

(BP) or (NP) —Non-polarised electrolytic

Polystyrene (styrol)

)

) (MF.PP) Polyester/polypropylene film

)

) Tantalum

Composition Ses | |

Metal oxide film SrSCEN SHC a y ceramic capacitors)

without spec. _B or F (high dielectric)

CH, SL, etc. Temperature compensating types

(M Metal film

Metal plate cement (MPC (ML Metal linear

ree eee

{ Wa 3 Z = . ;

PCB-AUD-PWR

Q107 x Q108 x 0106 x DTA124ES DTA124ES

DTA12ZES B2-INV B3-INV wita *

bod

R277 m

68 . B1-INV (5

D255 EQA02-05 cD

47K

sv a

R721

a 1) Q712 15K R770 R769 Nef JC501, R , fy

Ne

D251 EQA02-05CD

25C1740S-E TUNING-V

Q952 25D2012

L104 [ — — | VIF REF.

EQA02-09D 7RD9.1D3

JC501-R AV1-O/7P

[C202 TEA6415C

TDA4472C

D254 EQA02-0SC

ST24C16CB1

JC501, R SDA-SW-2

470 C342 C343

on

2200 2200

717

> a 36.37)

JCS01, F

setae Gi JC501-Q,R

v COL. NOISE

RED

Ic701

ST9291N7B1 ***

; }

A 8 o

(18 men 9) 20) OV

R709 100

9 ia

Ov DV OV OV

R748 R708/R707}R706/R705 10K 100 100 4100

JESO 1: A SDA-SW- 1

AV2

104 RGB DET

A722

3.3kS Q704 JC501-R PMmTANMRTTVY mw

6 7 8 9 10 ii {2 13

a anil PCB-SOUND PCB-SOUND

ame )amm(3 emn( (sams em ammo ma n/n (amazes (1 )amm(s)amo(s )emn(7 mms aun(s umn 2)em(3)emm4 3) © ae (| ) (5 ema( 6 ) (a) (3 )em(0) (1 1 eam(12)

=| =| || a gl A © a ) i Iw }

=a | a ee ee es ee

=

Bl O=G

Ls MUTE

HP- INS

36 AV2RO0 BR

ae ae a a ae a ee ae ae a ae PY ee Ne Ye A :

PCB AUD- PWR iC351

PCB CPS

Q DTC124ES MUTE-SW-11

DTC124ES MUTE-SW-10

JESOTSR MUTE-SW-9

L104 ~~ | VIF REF.

D301 IN4148

TDA4472C

Sp a Os Oa

A KK K K XK KK AX KX

PCB TEXT

SHA

5 VI

| |

Q707 jw (aERON a ize

LK-2 ©) _ ia Ee

R614 & 10K Ry R611

1K x«

aso a tiga ee JC501-Q.R

; COL. NOISE RED x

SHADOW-SW

RA A_A D402 67..G..0 1N4148 oc >

pee ee ee ae eG 7 ini | ) R6E7 |

22K Q6E2 JC501-R R6E8

120K | F

IC401

9) TDA8171 oe f. a. n

pa ae fa

BUFFER

Cd Lae

g ae 11 12 13

PCB-SOUND PCB-SOUND

fi CES EN EN ERS IR EN GES GEER EBS ES GR mean Oana enum

LL —

Ww

> mm('2 ums am ams Jams umm Jumma )amm(s Jam c)an(, un) TT (| ) (5 )emn( 6 emm( 7 emo 6 emme('s emma(1 0)emn( 1 emn(12)

E Bye

I oa | uw

a an

| Pt id

MUTE INS

IF

(pen) z| Zz — H i |

c

S

ae Gt ei G2 Ge Ge Be Ga aay a

1€351 TDA7263

Q320 DTC1i24ES

fT] [MUTE-SW-11

rn DTC124ES MUTE-SW-10 1-Q,R R365 R366 ‘4 JC501-R

-SW-8 MUTE-SW-3

CVBS

12

SHADOW-SW

LLL

A

PLB-MAIN

28" ONLY

PCB AUD- PWR

PCB CPS

Pk ae

WA AA AA AK AK AW

Bales nt at at a es Paes

PCB TEXT

es

DUE EReENCE Ika t

UKZIATSE. (MODELS

er 8 e736 | —_ fa e738 | — | 707 | —— p7os | ——_ — —s —- eal On a

foros

RIOT

OD

O

U K oO

16

DS Rene NG: 1S 7,

rel: -Se)Ze

REF. C665 ae | 100yF |

2 i Ome pss4| —~ | O | ae ee

R404 ee

R460 | 27K | 10K

R461 aa 5.6K

T3801 WHITE PEAK LIMITER CIRCUIT - 28" ONLY

(SEE PCB-CRT CIRCUIT BELOW)

» PCB=CRT 1N4148

ZN Na,

(sams Jem(< Jes (3 \ew(2 ) a, iam > A ED, RY ae, a, Seg cee ee eee, ge: to| A693

q at er ee =) ee eee R6E7 | LL

22K Q6E2 | D658 JC501-R Lee eee RD3. 6EB2

120K | BUFFER

Op EAS10 IC401

@) TDA8171

a. U a a 571

ee

D256 EQA02 -O5C

D258 EQAQ2 -O5C

D257 EQA02 -O5C

D255 : JC501-R cD D254 C-BUFFER

R281 75

R282 75

@

Q3902 JC501-R . |

rN au Te

0

i 0.01-Z

Q703 JA101-Q SW~PROTECT

R326 aos a7 VV ty tus i, hand On J aS

2V 2.3V

[C202 ()RF.AGC PST Ge) C346 C347 TEA6L1 SC R199

2200 2200 100 2.1V 4.3V R116

aE > (2)DET. VID CRR(7) +0122 270

C117 4 SOV C115 | WN @3e6/0 GND(6) 2.2 I 47 /

470

Q253

40 CVC BL(s)—~ aia 12V

M-.1 IC101 isc) TDA4472C

EQA02-05C

Att IC702 ST24C16CB1 AL

Q717 470 C342 C343 C501, R 2200 2200

7 al ab SCL-SW-1 R614 (35.36.37)

Q601 JC501-Q, COL. NOIS nee |

JCSO1, R SCL-SW-2

IC701 STSZSIN7ZBTt**

R762 220 *%

DUB BLK ao 9

O-O-O-@

100

x

ov OV Ov OV 0 Ov

R748/R7039|R708/R707|R706/R705 10K $100 $100 100

eo

38

x=

Oo

ORK

TT (1.3.9.10.20.21.2

Q718 JC501-Q,R

JC501, R SDA-SW-1

fy’ 0712 ‘4 JCSO1, R

RGB DET 10,

JCS01 =F PRIORITY-SW C734

ps0! T901 c901 BYWS6 Ficy * A IC951

TDA813

D706 EQAQ2-12AB ADG-COIL 2953

1600mA D905 BYD33G

470p

D560 IN4148

Q705 JA101-Q LED-SW-1

R969

Q706 JA101-Q

4.7 10W (CE)

AC275V M- . 22 (MPP)

L R PCB-MAIN SP392 SP391 F991

T2A Ss 1.8K 1 5W 1/4W |- 205 (CE)

etait RaqQ190 a eee ae

| SUP F so -é > pl eas nen C380 a V_Gp)TOP ~—AFC SW(49)-5 p301 aw 25V

N< < P Ww =

on” oO

av VR101 . INZt48E 220 yp

BV 10K 2V DSC 2.3V

100 ” R116 ,

ZIV GET. VID CRRGA =], e122 270 ;: ;

. 5 NV 4386/0 GND(16) 2.2» 47

; 5V ov 16V (4) CVE BL(s) C116 | 7p 12V | M-. 1

C252 IC101 tse) )

TDA4472C |

R255 220

6 50V pose Ht 0.22 100

R257 220

R258 100

IC702 ST24C16CB1

Q71i7 J€501, R

R762 220 *

a a) ie

v OV ov Ov OV

R748!IR709/R708/R707/R706/R705 10K §100 4100 4100 {100

e MC44031 R502

ZK E36E-4 se be

ov lov ov _ov Q601 50V Ore

(39) 38 —em{37 mee 3.6) (34) eee ae JC501-Q,R y 93h INP? ‘

ec § = 2 oS aie COL. NOISE aes 3

2 x 10 G1)

7 : o (S) BLK 38

16 OK

ey 0

SHADOW-SW

JC501, R il (1.3.9.10. 20.21.22. 23) i

D402 1N4148 Q718

JCS01-O.-R JC501, R SDA-SW-1

LL R6E7 | 22K

g Q6E2 | JC501-R R6ES

BUFFER

IC401

TDA8171

et cao! ia A IC951

2200 attst—i—<‘i‘xX TDA8137

C409 100V |

(MPF ) @)

7951 3150mA

(3) ) >

a) A

a » ey | bs @ Oy} 78 < (1)

CG)

R406 R404 1/2W *%

*

470p D562 D563 IN4148 IN4148 Q551

2SC2482 D560 IN4148

JC501-R WPL -B

Rg8S R505 pso3

12K 1N4148] 27,

iE Els ! soy Sty = = ae —is—“—;t«sS*dYtiCiC NH 330 Cp ) ; 680 330 )

C6E4 50V

ei AN Gk Dee et Sem ee Mi = 10, l

|

Pe cata eae sa el i St ee al

| TEA2Z031A ab C5164 28 ONL Y

2o00v== D525 sae WHITE PEAK Q302 | 9100 BYD33G LIMITER CIRCUIT

JC501-R R913 | D505 (MPP) C520 |4 pso9 FOCUS ‘i @ ei % 150K Qg01 6.2 16.2V 16.2V 0552 BY228 350V WE ay D336 ADJ y

y

ric | 3, NS 2 UUON' 10806 | oe or S2055N 2.2m LC813 ov REG QUT ||| BYvsce * RD39FB2 eri

| -

aed | (MB) | c521

a ae eee cg R514 A |

508 a2 aay 470 1.8K | F-33K F-22K BYD33G «1 /2W ee 8 Gis pee 1 bane ae (MB) = (MB) + 144} | (2)

(MB) 172 oe ae { | - | R5o71 0.

bv Q713 JES01>+0, 2 R-OSD

SHADOW-SW

IC401 TDA8171

T552<4,8509 33

| 1/2W

R406

3 * Q551 2502482

RSOS DSso3

12K 1N4148 L7p

csosS csoé BS00V BS500V 680 330

L502

C5A3 2000V 9100

D505 _ (MPP) BY228

Z552 2000mA-

D508 . 82 BYD33G «1 72W

C409

100V

|

(MPF )

(4)

(3) >

A

(2)

Cp

| =

ee i 5

te

wm |U Sf Ome) 25 STT

Yes es PCB TEXT

SiO es BLK BLK

A A A A A A A_A_A_A

ee eae eee ae es =

WHITE PEAK LIMITER CIRCUIT - 28" ONLY [SEE PCB-CRT -CLREUIT BELOW)

D658 RD3. 6EB2 JC501-R RGES

BUFFER ,

IC660 TEA5S101

Cé6F5 | C4659

D655

IN4148 220 R674 1/2W 39K

2W (MB)

JC501-R WPL -B

OV

\) Q6E7 3/7 JC501-R

ovl SPOT-1 23°. MONLY WHITE PEAK LIMITER CIRCUIT

Dé6éB2 BYD33G

DG6A7 BYVS6E

A J601 SOCKET-CRT

M4 Zl 705 “UG TUK ab = Q712 15K YT co R756 C739 R704 C717 JC501, R D702 uk 10K Z-.01 12K 2200 RGB DET Eoeo2) \ feqan2

§ R722 > O58 — 3.3KS Q704 pet R759 bape

JC501-R oo fest ae PRIORITY-SW

z951 3150mA

Q703

JA101-Q SW-PROTECT

ADG-COIL EQA02-12AB 2953 1600mA

470p

39 Q706 HOS)

é

Q705

JA101-Q

= LED-SW-1 5.1

o = eee 10W (CE)

| i

Q901 S2000N DS06

REG OUT | BYVS6E N L903

: L R | PCB-MAIN SP392 SP391 c915 NSE NSS R2KV R921 470 1.8K

5Ww -

}esos (CE)

DS07 RD3. oFB2 100 R918

(San (san(: San(a\en(2) oe R2KV legs: | D 1000 | acZooV

- TEA2261 [4700 4 i Oo. REG CONT pgo8

3 IN4148 |

RSo0g

3° .22 D909 Sw Yow AD3.oFB2 (MB)! (MB)

S7CO02 R7C30 WS) | ST/BY 560

|

57C03 R7C31 =e CH/PR 680 |

y COLD S7CD4 R7C32 - 1K

S7CO5 + 1

R3Cs5 L3C06 - 390 3.3pH A

. —_ : IPCB-CPS

RAAY SAN fF

Pr 2 UU vet ttle i Gato ostare

1¢401 TDA8171

ee ees 1000 ee

R751 L951 IC951 EQAQ2-08C

hes 390 pH TDA813

> = = D951 AtCgs52 1+ C953 BYW96E 200V 200V

100p 100, (MF )

C954 2951 500V 3150mA 1000

c4o9 100V z 8

()

@) ; x Oo

ir (2p 2 R6Fg < z953 sopv 220

1600mA 1060 o> 1/2

D562 D563 IN4148 IN4148 Q551

2SC2482 D560 IN4148

©

BYWS5B Hz 35V A\ 2352 case | joo0 5000mA 500V Pp

1000 O_o mn

Paes + C960 += 35V

R989 (MB) x

RSOS DSQ3

12K 1N4148] 27,

D954 * BYWS5B

csos cso4é B500V BS00V 680 330

C959 * 500V

4 R991 4.7 10W (CE)

1E551 TEA2Z031A

C5A3 2000V 9100

D505 (MPP)

D525 Q3902 BYD33G JESQ1-R

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