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Daewoo SD-8100 Service Manual

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SERVICE MANUAL
SD-8100

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Summary of Contents for Daewoo SD-8100

  • Page 1 SERVICE MANUAL SD-8100...

  • Page 2: Specifications

    SPECIFICATIONS Power 100-240V~, 50/60Hz Consumed electricity Hi-Fi : 27W, Mono : 26W Weight 5.7kg Dimension (W x H x D) 430mmx91mmx355.5mm Operative temperature +5°C~40°C Installation condition Horizontal / Relative humidity under 80% Signal type PAL/SECAM/MESECAM COLOR Antenna Input/output U/V-mixed: 75Ω unbalanced VIDEO input 1.0Vp-p (unbalanced, RCA JACK) AUDIO input...

  • Page 3: Advantages Of This Product

    ADVANTAGES OF THIS PRODUCT • DVD, VCD, CD, CD-R(MP3), CD-RW, VHS • DVD one-touch record function • Watching DVD for recording broadcast • Integrated remote control (VCR, DVD) • VISS function • Multiplex sound playback/record (Hi-Fi Model) • High Sound Quality of 6 head Hi-Fi (Hi-Fi Model) •...
  • Page 4 ADVANTAGES OF THIS PRODUCT • Slow Forward / Reverse playback (DVD) • Fast Forward / Reverse playback • Search of title, chapter, and time in DVD disc, and search of track and time in VCD and • Various TV aspect (DVD) 4:3 for Pan and Scan, 4:3 for Letter Box, and 16:9 for Wide •...

  • Page 5: Troubleshooting

    TROUBLESHOOTING 1. POWER CIRCUIT CAUTION You must use insulated trance during the first part test of POWER circuit. No power Exchange POWER CORD POWER cord is ok? Check Is 400~140V voltage obtained at C805 +? G801,L801,L802,D801. Output voltage of 2 Check IC601,IC701.

  • Page 6: System Circuit

    TROUBLESHOOTING 2. SYSTEM CIRCUIT A. VFD DISPLAY No VFD display. Is 5V obtained at IC701 pin#1? Check D701. Is -26V obtained at IC701 Check POWER circuit at -26V. pin#16~17? Oscillation at IC701 pin #2? Check C704, IC701. Is -22V, -18V obtained at F Check POWER circuit at F-, F+.
  • Page 7 TROUBLESHOOTING B. No power compensation. No power compensation. Voltage of power fail (IC601 Check R644. pin#3) at micom is 0.7V over? More than 3.2V is maintained for 1 minutes at IC601 pin#37 Check RESET circuit. during Power Cord Open. Exchange IC601.
  • Page 8 TROUBLESHOOTING C-1. Bad playback quality (1) Noise appears on the playback screen. Is noise diminished by tracking Re-adjust PATH. adjustment. Noise band is trembled up and Noise appears on the screen Re-adjust PATH. down? even though changing tape. Is there CTL pulse at IC601 Re-adjust the height of AC Is the height of CTL HEAD normal? pin#97?
  • Page 9 TROUBLESHOOTING C-2. Bad playback quality (2) Noise appears on the Full Recheck step C-1 (Bad playback screen. playback quallty (1)). Are SW pulse and HA SW Are there SW, HA SW pulse at Check IC601. normal? IC601 pin #16, 18? Check PCB Pattern.
  • Page 10 TROUBLESHOOTING E. No CASSETTE Loading Cassette tape isn’t inserted. Is 5V voltage obtained at Check at ON/OFF 12. Loading parts IC604 pin#82? Check (D822, Q821). Is 13V voltage obtained at Check D851 and POWER circuit. Capstan Motor pin#8? Connect Capstan and Loading Motor. Is 12V voltage obtained at Each Check connector and Capstan Motor.
  • Page 11 TROUBLESHOOTING G. DRUM Motor stops DRUM Motor stops. Is 13V voltage obtained at Check ON/OFF 13V P603 pin#8? (D851, Q856). Is DRUM PWM fit to IC 601 Check DRUM PG/FG(IC 601 90). pin#76? Is 1.2V voltage obtained at Check R657, R658,C661,C668. P603 pin#12? Check Capstan Motor and DRUM Motor.

  • Page 12: Video Circuit

    TROUBLESHOOTING 3. VIDEO circuit A. EE screen doesn’t appear EE screen doesn’t appear. Is Video signal input at IC301 Check LINE JACK and IF circuit. pin#48,50,52,54? Check DVD circuit. Is 5V obtained at IC301 pin#24, Check POWER 5V. 42, 55, 72, 91? Is signal input at IC302 Check LINE JACK and IF circuit.
  • Page 13 TROUBLESHOOTING B. Playback picture doesn’t appear Playback picture doesn’t appear. Is Envelope output at IC301 Is 5V obtained at IC301 Check POWER 5V. pin#79? pin#91? Is SW Pulse input at IC301 Check IC601 pin#18. pin#70? Check and Replace HEAD. Is Y signal output at IC301 Is 5V obtained at IC301 Check POWER 5V.
  • Page 14 TROUBLESHOOTING C. No recording No recording. Check EE MODE. Is FM signal output at IC301 Is signal input at IC301 pin# pin#78? 48, 50, 52, 54? Is 5V obtained at IC301 Check POWER circuit. pin#91? Is IC301 pin#80 REC(H) Check IC601 pin#22. HIGH? Is VIDEO SW Pulse input at Check IC601 pin#18.
  • Page 15 TROUBLESHOOTING D. No sound in broadcasting (Stereo) Is 5V obtained at IC121 Check POWER circuit. pin#1, 11, 33? Oscillation of IC121 pin#5,6? Exchange X121. Is SIF output from RF121 Check RF101. pin#18 to IC121 pin#2? Is AUDIO output at IC121 Exchange IC121.
  • Page 16 TROUBLESHOOTING 4. AUDIO (Hi-Fi MODEL) A. No sound in E-E mode A. a.1 RF E-E No sound in RF E-E mode Is there Audio at IC252 Check IC101, RF101 block. pin#4,11? Is RF Audio signal output at Is 12V obtained at IC252 Check POWER circuit.
  • Page 17 TROUBLESHOOTING A. b. AV1 E-E No sound in AV1 E-E mode. Check Input JACK. Is there Audio IC252 pin#2,15? Is 12V obtained at IC252 Is RF Audio signal output at Check POWER circuit. pin 16? IC252 pin#3,13? IC601 pin#31 is H, Check IC601.
  • Page 18 TROUBLESHOOTING A. c. AV2 E-E No sound in AV2 E-E mode. Is 12V obtained at IC251 pin#34? Check POWER circuit. Is 5V obtained at IC251 pin#40? Is there Audio at IC251 Check Input JACK.(Scart pin#8,9 in AV2 mode? AV2) Is AV2 Audio signal output at Are CLK and DATA obtained at IC251 Replace IC251.
  • Page 19 TROUBLESHOOTING A.d. AV-F E-E No sound in AV-F E-E mode Is there Audio at IC253 Check Input JACK. pin#2,12 in AV-F mode? (FRONT AV) Is AV-F Audio signal output Is 12V obtained at IC253 Check POWER circuit. at IC253 pin#14,15? pin#16? Check IC601.
  • Page 20 TROUBLESHOOTING A. e1. DVD E-E No sound in DVD E-E mode. Is there Audio at IC253 Check ICD01, OP-AMP pin#1,13 in DVD mode? block.(A. e2) Is DVD Audio signal output Is 12V obtained at IC253 Check POWER circuit at IC253 pin#14,15? pin#16? Check IC601.
  • Page 21 TROUBLESHOOTING A. e2. No DVD AUDIO Are there CLOCK signal at P101 #6,7,8 and DATA Check MPEG Board. signal at P101 #10? Are there CLOCK signal at Check signal flow circuit. ICD01 #1,3,16 and DATA signal at ICD01 #2? Is 3.3V obtained at ICD01 pin#5? Check POWER circuit.
  • Page 22 TROUBLESHOOTING B. No Hi-Fi playback audio (PLAY MODE) Is there A.SW signal at IC251 Check A.SW at IC601 pin#19. pin#41? Is there playback audio signal Replace IC251. at IC251 pin#16,17? Is there Audio at IC252 Check signal flow circuit pin#1,12? from IC251 to IC252.
  • Page 23 TROUBLESHOOTING c. No HIFI Audio in record/playback mode(REC MODE) No Hi-Fi Audio in record/playback mode IC251 pin#2, 3, Check IC101(MPX) Block. IC251 pin#6, 7, Check Input AV1 JACK. IC251 pin#10, 11, Check Input AV-F JACK. IC251 pin#4,5 Check ICD01(DVD) Block. IC251 pin#8, 9.
  • Page 24 TROUBLESHOOTING D. No NORMAL AUDIO playback (PLAY MODE) No Normal Audio in playback mode Is there siganl at IC252 Signal at IC251 pin#21 is Check POWER circuit. pin#3,13? transferred to IC301 pin#13,15,17? Is there playback Audio Check A/C HEAD. signal at IC301 pin#11? Check IC301.
  • Page 25 TROUBLESHOOTING E. No NORMAL Auido in record/playback mode(Check in REC mode) No Normal Audio in record/playback mode IC251 pin#2, 3, Check IC101(MPX) Block. IC251 pin#6, 7, Check Input AV1 JACK. IC251 pin#10, 11, Check Input AV-F JACK. IC251 pin#4,5 Check ICD01(DVD) Block. IC251 pin#8, 9.
  • Page 26 WAVEFORMS 1. VIDEO SP IC301-88.89 3.0Vp-p EP IC301-94.95 2.2 Vp-p 1V/10msec/cm REC IC301 63 or 61 & IC302 14 IC301 63 or 61 & IC302 14 (IC604-3) (IC301 -70) (IC301 -70) 0.5/5msec/cm 0.5/5msec/cm SP PLAY/REC EP PLAY/REC...
  • Page 27 WAVEFORMS 2. AUDIO 2-1 AUDIO(Mono) P201-2...
  • Page 28 WAVEFORMS 2-2 AUDIO(HI-Fl) Q901-collector 3. SERVO/SYSCON (IC601-18) 5Vp-p (IC601-77) 5Vp-p (IC601-76) 5Vp-p (IC601-94) 3Vp-p 2V/5msec/cm sec/cm sec/cm 1V/5msec/cm REC/PLAY REC/PLAY REC/PLAY (IC601-97) 4.4Vp-p (IC601-90) 25Vp-p&5Vp-p (IC601-87) 2.5Vp-p (IC601-38) 2.6Vp-p 1V/5msec/cm 1V/5msec/cm 1V/0.2msec/cm 0.5V/0.1µ sec/cm PLAY REC/PLAY REC/PLAY REC/PLAY...

  • Page 29: Circuit Diagram

    CIRCUIT DIAGRAM 1. POWER SUPPLY SCHEMATIC DIAGRAM (PAL DVD COMBO FREE)
  • Page 30 CIRCUIT DIAGRAM 2. AV CIRCUIT DIAGRAM...
  • Page 31 CIRCUIT DIAGRAM 3. SERVO & SYSCON SCHEMATIC DIAGRAM...
  • Page 32 CIRCUIT DIAGRAM 4. DIGITAL AUDIO SCHEMATIC DIAGRAM...
  • Page 33 CIRCUIT DIAGRAM 5. HI FI & SW CIRCUIT DIAGRAM...
  • Page 34 CIRCUIT DIAGRAM 6. IF/MPX/PDC/INPUT-OUTPUT SCHEMATIC DIAGRAM...
  • Page 35 CIRCUIT DIAGRAM ATATI...
  • Page 36 CIRCUIT DIAGRAM VCR-INT...
  • Page 37 CIRCUIT DIAGRAM...
  • Page 38 CIRCUIT DIAGRAM DECODER...
  • Page 39 PCB CIRCUIT BOARD 1-1 . VCR (MAIN)
  • Page 40 PCB CIRCUIT BOARD 1-2. POWER...
  • Page 41 PCB CIRCUIT BOARD 1-3. LOGIC...
  • Page 42 PCB CIRCUIT BOARD 2-1. DVD (MAIN)- A...
  • Page 43 PCB CIRCUIT BOARD 2-2 . DVD (MAIN)- B...

  • Page 44: Instrument Disassembly

    INSTRUMENT DISASSEMBLY 1. DECK DISASSEMBLY Perform all disassembly procedures in the order presented. When reassembling, use the reverse procedure. Make sure that all leads/ wiring are routed correctly when reassembling. A. LEG REMOVAL FIG. 1 B. TOP COVER REMOVAL FIG. 2...
  • Page 45 INSTRUMENT DISASSEMBLY C. PANEL FRONT DISASSEMBLY FIG. 3...
  • Page 46 INSTRUMENT DISASSEMBLY D. LOGIC PCB DISASSEMBLY FIG. 4...
  • Page 47 INSTRUMENT DISASSEMBLY E. DECK AND MAIN PARTS DISASSEMBLY FIG. 5...
  • Page 48 INSTRUMENT DISASSEMBLY F. MAIN PCB DISASSEMBLY FIG. 6...
  • Page 49 INSTRUMENT DISASSEMBLY G. MAIN CHASSIS DISASSEMBLY FIG. 7...
  • Page 50 INSTRUMENT DISASSEMBLY FIG. 8...

  • Page 51: Electrical Parts List

    ELECTRICAL PARTSLIST Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) PARTS_CODE PARTS_NAME PARTS_DESCR...
  • Page 52 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK C253 HCFH474ZCA C CHIP CERA 25V Y5V 0.47MF Z 2012 C622 HCFH223ZBA C CHIP CERA 25V Y5V 0.022MF Z 1608 C254 HCFH474ZCA C CHIP CERA 25V Y5V 0.47MF Z 2012 C624 HCBK103KBA C CHIP CERA...
  • Page 53 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK ICD03 1NJM4580MC IC CHIP AMP NJM4580M R278 HRFS153JBA R CHIP 1/16 15K OHM J 1608 L163 HLX1210001 BEAD CHIP TB201209Z121 R280 HRFS153JBA R CHIP 1/16 15K OHM J 1608 L164 HLX1210001 BEAD CHIP TB201209Z121...
  • Page 54 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK R665 HRFS103JBA R CHIP 1/16 10K OHM J 1608 RS04 HRFS102JBA R CHIP 1/16 1K OHM J 1608 R669 HRFS103JBA R CHIP 1/16 10K OHM J 1608 RS05 HRFS101JBA R CHIP 1/16 100 OHM J 1608 R670 HRFS331JBA...
  • Page 55 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK C275 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 C602 CEXF1A471V C ELECTRO 10V RSS 470MF (8X11.5) TP C276 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 C615 CEXF1C470A C ELECTRO 16V RSM 47MF (5X7) TP C277 CEXF1C470A C ELECTRO...
  • Page 56 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK L306 5CPX101J2T COIL PEAKING 100UH(BRN-BRN) Q905 TZTC3198Y- TRANSISTOR KTC3198Y-(1815Y) (AUTO) L307 5CPX100J2T COIL PEAKING 10UH(BRN-BLK) Q906 TZTC3198Y- TRANSISTOR KTC3198Y-(1815Y) (AUTO) L311 5CPX100J2T COIL PEAKING 10UH(BRN-BLK) Q907 TZTC3198Y- TRANSISTOR KTC3198Y-(1815Y) (AUTO) L361 5CPX101J2T COIL PEAKING...
  • Page 57 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK D601 DZN4004 - DIODE 1N4004(AUTO) R162 RD-AZ750J- R CARBON FILM 1/6 75 OHM J D602 DZN4148 - DIODE 1N4148 AUTO 52MM R163 RD-AZ750J- R CARBON FILM 1/6 75 OHM J D603 DZN4004 - DIODE...
  • Page 58 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK R316 RD-AZ151J- R CARBON FILM 1/6 150 OHM J R660 RD-AZ203J- R CARBON FILM 1/6 20K OHM J R317 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R661 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R320 RD-AZ101J-...
  • Page 59 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK P702 97P62T08D6 CONN B/B TRC-XP PLUG 1.25MM 6P R706 RD-AZ272J- R CARBON FILM 1/6 2.7K OHM J P703 97P62M10CL CONN HOUSING 35234-2010(LOGIC) R707 RD-AZ272J- R CARBON FILM 1/6 2.7K OHM J Z0031 PVLAJ1E096 PCB LOGIC CHIP AS DV6T711D-AQ...
  • Page 60 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK L823 56C220K695 COIL CHOKE(CAP TYPE) 22UH K (CAP TYPE) 9X11.1 C423 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 Z8012 PVPWJAE096 POWER AXIAL AUTO AS DV6T711D-AQ C425 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 D802 DZEG01C -...
  • Page 61 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK HLM189MD3B L CHIP MULTI 1.8UH 20% 2012 R471 HRFS220JBA R CHIP 1/16W 22 OHM J 1608 L403 HLW220KL4B L CHIP WOUNDER 22UH K LEMCT220K 3225 R472 HRFS220JBA R CHIP 1/16W 22 OHM J 1608 L404 HLW220KL4B L CHIP WOUNDER...
  • Page 62 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK R571 HRFS101JBA R CHIP 1/16 100 OHM J 1608 C404 CEXF1C470A C ELECTRO 16V RSM 47MF (5X7) TP R573 HRFS101JBA R CHIP 1/16 100 OHM J 1608 C408 CEXF1C470A C ELECTRO 16V RSM 47MF (5X7) TP R574 HRFS101JBA...
  • Page 63 ELECTRICAL PARTSLIST 2 ND PANEL LOGIC PARTS LIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK Z003 PVLAMSE175 PCB LOGIC MANUAL AS DV6T721D-AQ SW712 5S50101Z90 SW TACT THVV502GDA G701 DHNV10SM18 DIGITRON HNV-10SM18 Z0033 PVLAJAE175 PCB LOGIC AXIAL AS DV6T721D-AQ G701A 97P2348100 HOLDER DIGITRON C710 CCZF1H104Z...