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NEC DSC-3261HA Service Manual

Stereo color television
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Service Manual

Stereo Color Television
CHASSIS : CM-921F
PAL/SECAM-B/G, D/K, I, H SYSTEM
NTSC 4.43/3.58-M SYSTEM
MODEL : DSC-3261HA
PF32W502(NEC Model)
S/M No:
TCM921FEFO
NEC Corporation
Jan.2003

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  Summary of Contents for NEC DSC-3261HA

  • Page 1: Service Manual

    S/M No: TCM921FEFO Service Manual Stereo Color Television CHASSIS : CM-921F PAL/SECAM-B/G, D/K, I, H SYSTEM NTSC 4.43/3.58-M SYSTEM MODEL : DSC-3261HA PF32W502(NEC Model) NEC Corporation Jan.2003...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. Specification 2. CM-921F EEPROM Presetting DATA 3. Circuit block Diagram 4. Alignment Instruction 5. Trouble Shooting Charts 6. Part list(DSC-3261H ) 7. Mechanical Exploded View 8. Printed Circuit Board 9. Schematic Diagram...
  • Page 3: Specification

    1. Specification 1. DSC-3261HA Color System PAL, SECAM, 4.43NTSC(AV), 3.58NTSC TV Standard Sound System B/G, D/K, I, M, H Rated Voltage AC 110V ~ 240V, 50/60Hz Power Consumption 148W Sound Output Power Main 8W X 2 HYPER + CHINA + IVORY COAST VHF L : E2(48.25MHz) ~ S6(147.25MHz)
  • Page 4: Cm-921F Eeprom Presetting Data

    RETMA SWEEP (268Hz~4.2KHz) For NTSC Geomery R,B,W PAL-G 21CH (471.25MHz) 1KHz 60% MOD. reserved * presetted channel for mass-production can be changed. 3. Pre-setted DATA for Adjusments DSC-3261HA remark Name Details NTSC Heat-Run Screen Screen adjustments Sound Test Picture Test...
  • Page 5 CM-921F EEPROM Presstting DATA 4. CPU option for Function Change with PIP Without PIP Enable the Digital Sensor Digital EYE Disable the Digital Sensor for all models, except NEC Languge Enable the English(NEC) 34"inch 34 Inch 32"inch LATIN English,French,Swedish,Czech,German,Spanish,Italian,Estonian Note : If OSD language & text selec.
  • Page 6: Circuit Block Diagram

    3. circuit block Diagram...
  • Page 7: Alignment Instruction

    4. Alignment Instruction 1. SERVICE REMOCON & EEPROM PRESETTING DATA 1-1. SERVICE REMOCON : R-34SVC (S/N:48B3034SVC) 1-2. EEPROM PRESETTING DATA DSC-3261HA Name Details remark NTSC Heat-Run Screen Screen adjustments Sound Test Picture Test Timer LED test V-CENTER +3095 +3927 V-SIZE...
  • Page 8 Alignment Instruction * Software option for Function Change - ON : With PIP Models - OFF : Without PIP Models - ON : Enable the Digital Sensor Digital EYE - OFF : Disable the Digital Sensor - ON : Enable the all Languge - Multi OSD-Language Languge - OFF : Enable the English...
  • Page 9 Alignment Instruction 3. The adjustment of SCREEN 3-1. Confirm the presetting ‘IBRM’ data of EEPROM according to CRT. 3-1-1. Default Value of IBRM : IBRM(34inch) = 320, IBRM(29inch Flat) = 340 3-2. Press the [S2] KEY of SVC Remocon, Screen-Adjustment OSD will be displayed.
  • Page 10 Alignment Instruction 6. The adjustment of AGC 6-1. Main and Sub AGC DATA are Fixed, but those can be adjusted in case of need. 6-2. Confirm the Main AGC and Sub AGC by pressing the [S10]key of SVC remocon. Main AGC=13, Sub AGC=13 7.
  • Page 11 Alignment Instruction 7-6. The adjustment of PINCUSHION 7-6-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH). 7-6-2. Press the PR up/down Keys ( / ) to select PARAVOLRA. Referring to the 2th line of both side, adjust with Vol Up/Down ( / ) keys.
  • Page 12 Alignment Instruction 7-7. The adjustment of Vertical Linearity 7-7-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH). 7-7-2. Fix adjustment of Vertical Linearity after EEPROM presetting, but it can be adjusted in case of need. 7-7-3. Press the PR up/down Keys ( / ) to select V LINEAR.
  • Page 13 Alignment Instruction 8-4. The adjustment of SUB-CONTRAST 8-4-1. Fix adjustment of SUB-CONTRAST after EEPROM DATA presetting. 8-4-2. Reference (Default value) : 07 9. THE ADJUSTMENT OF PIP 9-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH) and Color Bar. 9-2. Press the [S7] KEY of SVC Remocon, PIP-Adjustment OSD wil be displayed.
  • Page 14: Trouble Shooting Charts

    5. Trouble Shooting Charts 1. NO RASTER Check Check horizental dirve Standby 5.5V & Pulse at 24th pin of I701 Main B+(132V) line ABNORMAL NORMAL ABNORMAL VOLTAGE Check/Replace Check horizontal Vcc, ABNORMAL Voltage of C893 R555 at 24th pin of I701, X501(20.25),”...
  • Page 15 Trouble shooting Chats 2. NO COLOR ABNORMAL Check signal at Refer to 19th pin of I701 no picture NORMAL Change the system Check/Replace PAL ---> NTSC ---> SECAM trap of IF module & Q103 Check R, G, B signal 42,43,44th of I701 Check/Replace Q501, Q542, Q543, Q544...
  • Page 16 Trouble Shooting Charts 3. NO PICTURE NORMAL Check Check signal at R, G, B 19th pin of I701 of I701 ABNORMAL Check/Replace Change input mode Q550, Q542, Q543, RF--->AV--->RF Q544 ABNORMAL Check signal at IF of Check/Replace SCL, SDA, B+ Tuner of Tuner Check...
  • Page 17 Trouble Shooting Charts 4. NO VERTICAL SCANNING(ONE HORIZONTAL LINE RASTER) Check DY Connector ABNORMAL Check/Replace Check D406, D403” Input Voltage of I301 48V line, 19V line NORMAL ABNORMAL Check Check Vertical input(Vin+, Vin-) 34, 35th pin of I701 of I301 ABNORMAL Check Check/Replace...
  • Page 18 Trouble Shooting Charts 5. NO SOUND(PICTURE OK) Check direction & connection H/P Connector(P503) & AV3 Connector(P504) Check 6th pin of I701 (normal:Low) ABNORMAL Check signal at Check 28, 29, 58th pin of I601 12th pin of I101 ABNORMAL NORMAL NORMAL Check/Replace Check/Replace X601 &...
  • Page 19 Trouble Shooting Charts 6. NO PIP ABNORMAL Check signal at Check 15, 16, 17, 18th pin H sync & V sync of IP03 of IP03 NORMAL Check/Replace Check signal at QCP01, QCP02, 24, 26, 28th pin QCP03, QCP07 of IP03 Check signal at Check 27, 28, 29, 30th pin...
  • Page 20 Trouble Shooting Charts 8. REMOTE CONTROL UNIT TROUBLE ABNORMAL Check Replace battery and LED battery of Remocon NORMAL ABNORMAL Check Replace IR of Preamp and Vcc Preamp IC(IE01) of Preamp IC(IE01) NORMAL Check/Replace 8th pin of I701...
  • Page 21: Part List(Dsc-3261H )

    6. Part list (DSC-3261HA) is a recommendable part for stock. safety component, so it must be used the same component. LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK ZZ110 PTACPWD713 ACCESSORY AS...
  • Page 22: Part List

    X601 5XE18R432E CRYSTAL QUARTZ HC-49/U 18.43200MHZ 30PPM C562 CMXM2A104J C MYLAR 100V 0.1MF J (TP) ZZ200 PTMPJ0D713 PCB MAIN (RHU) AS DSC-3261HA C563 CMXM2A104J C MYLAR 100V 0.1MF J (TP) C504 CEXF1C471V C ELECTRO 16V RSS 470MF (8X12)TP C564 CEXF1C331V C ELECTRO 16V RSS 330MF (8X11.5) TP...
  • Page 23 50V B 1000PF K (AXIAL) QA22 TKTC3198Y- KTC3198Y C639 CCZB1H102K C CERA 50V B 1000PF K (AXIAL) ZZ200 PTMPJAD713 PCB MAIN AXIAL AS DSC-3261HA C640 CCZB1H102K C CERA 50V B 1000PF K (AXIAL) 2TM14006LB TAPE MASKING 3M #232 6.0X2000M C641 CCZB1H102K C CERA...
  • Page 24 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK D541 DUZ7R5BM— DIODE ZENER UZ-7.5BM J501 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING D542 DUZ7R5BM— DIODE ZENER UZ-7.5BM J502 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING D550 D1N4148—-...
  • Page 25 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK J604 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JA08 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J605 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JA09 85801065GY WIRE COPPER...
  • Page 26 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK R523 RD-AZ223J- R CARBON FILM 1/6 22K OHM J R597 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R525 RD-AZ153J- R CARBON FILM 1/6 15K OHM J R599 RD-AZ101J-...
  • Page 27 RA98 RD-AZ222J- R CARBON FILM 1/6 2.2K OHM J 0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN ZZ300 PTPWMSD713 PCB POWER MANUAL AS DSC-3261HA I805 1SE130N—- SE130N 2291050616 FLUX SOLDER JS-64T3 I806 PTH2SW6900 HEAT SINK ASS`Y 1KA7805—- + 7174301011 2291050301...
  • Page 28 SCREW TAPPTITE TT2 RND 3X8 MFZN CF412 CMXE2J333J C MYLAR 630V PU 0.033MF J (TP) Q401 TKTC3229— KTC3229 ZZ200 PTPWJBD713 PCB POWER M-10 AS DSC-3261HA Q402 PTA2SW8216 HEAT SINK ASS`Y T2SD2553— + 7174301011 2TM18006BE TAPE MASKING 6.2X500 Q402 T2SD2553— 2SD2553 E005...
  • Page 29 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK 4856310300 EYE LET BSR T0.2 (R1.6) E081 4856310300 EYE LET BSR T0.2 (R1.6) E030 4856310300 EYE LET BSR T0.2 (R1.6) E082 4856310300 EYE LET BSR T0.2 (R1.6) E031...
  • Page 30 RF427 RF01Z278K- R FUSIBLE 1W 0.27 OHM K (TP) L810 58C0000096 COIL CHOKE 610G0233(470K) ZZ200 PTPWJRD713 PCB POWER RADIAL AS DSC-3261HA LS801 58CX430599 COIL CHOKE AZ-9004Y 940K TP C301 CMXM2A104J C MYLAR 100V 0.1MF J (TP) Q301 TKTA1266Y- KTA1266Y (TP)
  • Page 31 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK D302 DUZ15BM—- DIODE ZENER UZ-15BM J824 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING D303 DRGP15J—- DIODE RGP15J J825 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING D309 DUZ33B——...
  • Page 32 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK L309 5MC0000100 COIL BEAD HC-3550 R831 RC-2Z565KP R CARBON COMP 1/2 5.6M OHM K L310 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB) R834 RD-4Z472J- R CARBON FILM...
  • Page 33 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK ZP01 5PYXT4R5MB FILTER CERA XT 4.5MB IP03 1SDA9489— IC PIP SDA9489 ZP02 5PYXT6R5MB FILTER CERA XT 6.5MB JC101 HRFT000-CA R CHIP 1/10 0 OHM 2012 ZP03 5PYXT6R0MB FILTER CERA...
  • Page 34 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK RCP10 HRFT151JCA R CHIP 1/10 150 OHM J 2012 CP26 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP RCP11 HRFT151JCA R CHIP 1/10 150 OHM J 2012 CP27 CEXF1H100V...
  • Page 35 5S40000003 SW POWER PUSH SS-160-7-G R105 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM J ZZ200 PTUNJ0D713 PCB UNION RHU AS DSC-3261HA RP48 RD-AZ680J- R CARBON FILM 1/6 68 OHM J C904 CEXF2C100V C ELECTRO 160V RSS 10MF (10X16) TP RP49...
  • Page 36 REMARK 5S50101Z90 SW TACT THVV502GDA R902 RD-AZ912J- R CARBON FILM 1/6 9.1K OHM J ZZ200 PTUNJAD713 PCB UNION AXIAL AS DSC-3261HA R904 RD-AZ393J- R CARBON FILM 1/6 39K OHM J A001 4859808260 PCB UNION 246X246 DIB R906 RD-AZ392J- R CARBON FILM 1/6 3.9K OHM J...
  • Page 37 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK R986 RD-AZ240J- R CARBON FILM 1/6 24 OHM J RF01 RD-AZ201J- R CARBON FILM 1/6 200 OHM J RF02 RD-AZ331J- R CARBON FILM 1/6 330 OHM J RF03 RD-AZ471J- R CARBON FILM 1/6 470 OHM J RF04 RD-AZ561J-...
  • Page 38: Mechanical Exploded View

    7. Mechanical Exploded View...
  • Page 39: Printed Circuit Board

    8. Printed Circuit Board...
  • Page 40 Printed Circuit Board...
  • Page 41 Printed Circuit Board...
  • Page 42: Schematic Diagram

    9. Schematic Diagram...
  • Page 43 Schematic Diagram...
  • Page 44 Schematic Diagram...
  • Page 45 NEC Corporation 7-1, SHIBA 5-CHOME MINATO-KU, TOKYO 108-8001, JAPAN...

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