Daewoo DV6T811N-LT Service Manual

Hide thumbs

Table Of Contents

Quick Links

S/M No. : VTB811NET0

Service Manual

MODEL : DV6T811N-LT

DV6T813N-QJ

DV6T821N-QJ/X

DV6T813N-QJ/X

DV6T823N-QJ/M

DAEWOO ELECTRONICS CO., LTD.

http : //svc.dwe.co.kr

Jun. 2002

Table of Contents

Need help?

Do you have a question about the DV6T811N-LT and is the answer not in the manual?

Questions and answers

Summary of Contents for Daewoo DV6T811N-LT

Page 1 S/M No. : VTB811NET0 Service Manual MODEL : DV6T811N-LT DV6T813N-QJ DV6T821N-QJ/X DV6T813N-QJ/X DV6T823N-QJ/M DAEWOO ELECTRONICS CO., LTD. http : //svc.dwe.co.kr Jun. 2002...
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........................2 ADVANTAGES OF THIS PRODUCT ..................3 TROUBLE SHOOTING ........................5 WAVEFORMS ...........................25 CIRCUIT DIAGRAM .........................28 PCB CIRCUIT BOARD........................39 INSTRUMENT DISASSEMBLY......................44 ELECTRICAL PARTSLIST........................49...
Page 3: Specifications
SPECIFICATIONS Power AC 120V, 60Hz Consumed electricity 24W (supplementary 2.5W) Weight 5.7kg Dimension (WxHxD) 430mmx91mmx355.5mm Operative temperature +5°C~35°C Installation condition Horizontal / Relative humidity under 80% Received channels VHF: 2-13 CH / UHF: 14-69 CH / Cable: 1-125 Signal type NTSC COLOR Antenna Input/output U/V-mixed: 75Ω...
Page 4: Advantages Of This Product
ADVANTAGES OF THIS PRODUCT * DVD, VCD, CD, CD-R(MP3), CD-RW, VHS, S-VHS playback function * DVD one-touch record function * Watching DVD for recording broadcast * Integrated REMOTE (VCR, DVD) * Ultra power savings : less than 3W for stand-by mode * VISS function * Multiplex sound playback/record * High Sound Quality of 6 head Hi-Fi...
Page 5 ADVANTAGES OF THIS PRODUCT * Slow Forward / reverse (DVD) playback * Fast Forward / reverse playback * Search of title, chapter, and time in DVD disc, and search of track and time in VCD and CD * Various TV aspect (DVD) 4:3 for Pan and Scan, 4:3 for Letter Box, and 16:9 for Wide * Repeat playback (title and chapter for DVD, track and disc for VCD/CD) * Bookmark function (DVD)
Page 6: 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 7 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 8 TROUBLESHOOTING B. No power compensation. No power compensation. Voltage of power fail (IC601 Check R625. pin#100) 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. C-1.
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 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 Check POWER 5V. pin#54, 42, 55, 72? Check IC301 Is signal output at IC301 pin #70,62,68,69.
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? Check PB(H) circuit Is IC301 pin#80 PB(H) LOW? Is VIDEO SW Pulse input at Check IC601 pin#18.
Page 15 TROUBLESHOOTING D. No OSD(On Screen Display) appears No OSD appears. Is 5V obtained at IC601 pin# Check POWER circuit. 53, 98, 99? Is Video signal output at IC601 Is Video signal input at IC601 Replace IC601. pin#52? pin#50? Check IC 601. Check IC 601.
Page 16 TROUBLESHOOTING 4. AUDIO A. No sound in E-E mode A. a.1 RF E-E No sound in RF 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 pin#2, Check IC101 and RF101 3 in RF mode? Block(Ad2).
Page 17 TROUBLESHOOTING A. b. LINE1 E-E No sound in LINE1 E-E mode. Is 12V obtained at IC251 pin#34? Check POWER circuit. Is 5V obtained at IC251 pin#40? Check Input LINE1 Is Audio signal at IC251 pin#6, 7 in LINE1 mode? JACK Is Audio signal output at IC251 Are CLK and DATA obtained at Replace IC251...
Page 18 TROUBLESHOOTING A. c. LINE2 E-E No sound in LINE2 E-E mode. Is there Audio at IC252 Check Input LINE2 JACK. pin#4,11 in LINE2 mode? Is 12V obtained at IC252 Is LINE2 Audio signal output Check POWER circuit. pin#16? at IC252 pin#3,13? IC601 pin#20 is H? Check IC601.
Page 19 TROUBLESHOOTING A. d1. DVD E-E No sound in DVD E-E mode. Is 12V obtained at IC252 Check POWER circuit. pin#16? Is there DVD signal at Check ICD01(DVD)Blcok IC252 pin#2,15? (Ad2) Is DVD signal output at IC601 pin#20 is H, Check IC601. IC251 pin#3,13 ? pin#21is H? Is about 8V obtained at IC252...
Page 20 TROUBLESHOOTING A. d2. No DVD AUDIO Is there CLOCK signal at P101 Check and Replace MPEG pin#6,7, 8 and DATA signal at Board pin#10? CLOCK Signal at ICD01 Check signal flow circuit. pin#1,3,16 is transferred to DATA Signal at pin#2? voltage at ICD01pin#6 is 5V? Check power circuit.
Page 21 TROUBLESHOOTING B. No Hi-Fi playback audio (PLAY MODE) Is the voltage at IC251 pin#44 Check DRUM connector over 3.2V ? and DRUM Is A.SW Signal input at IC251 Check A.SW at IC601 pin#19 pin#41? Is there Playback Audio signal Replace IC251. at IC251 pin#19,20? Is thereAudio at IC252 Check signal circuit IC251...
Page 22 TROUBLESHOOTING c. No Hi-Fi playback in record/playback mode(REC MODE) No Hi-Fi playback in record /playback mode Check IC101(MPX) Block. Check ICD02(DVD) Block at Check Input LINE1 JACK. IC251 pin#2, 3, 6, 7, 10, 11, 8, Check Input LINE2 JACK. Check ICD02(DVD) Block. Is there Audio signal? REC 'H' BASE voltage at Check IC601 pin#22...
Page 23 TROUBLESHOOTING E. No NORMAL AUDIO playback in record/playback mode(Check in REC mode) No Normal Audio playback in record/playback mode Check IC101(MPX) Block. Check ICD02(DVD) Block Check Input LINE1 JACK. at IC251 pin#2, 3, 6, 7, 10, Check Input LINE2 JACK. 11, 8, 9 Is there Audio signal? Check ICD02(DVD) Block.
Page 24 TROUBLESHOOTING 5. MPEG B/D No LOGO display After checking Power_On_L Signal at Is Power supplied? P505 pin#8, check CPU IC Does Oscillation Device oscillate? Check OS500,OS401 Is Digital Data transmitted from Check Flash Memory CPU and Flash? and CPU IC Is Digital Data transmitted to SDRAM Check MPEG Decoder IC from MPEG Decoder IC?
Page 25 TROUBLESHOOTING No Digital Audio output Is Digital Data transmitted from Check Flash Memory and CPU and Flash? CPU IC Is Digital Audio Data transmitted to MPEG Check MPEG Decoder IC Decoder IC pin #133? Is there Digital Audio signal Check FFC CABLE connected from P481 pin#1? to P481 Check VCR Part...
Page 26: Waveforms
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 2-2 AUDIO(HI-Fl) Q901-collector...
Page 28 WAVEFORMS 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 (12 0V ONLY)
Page 30 CIRCUIT DIAGRAM 2 . P O W ER S U P P LY S CH EM A TIC DIA G R A M (DV D CO M B O FR EE)
Page 31 CIRCUIT DIAGRAM 3.VIDEO (AUDIO SCHEMATIC DIAGRAM)
Page 32 CIRCUIT DIAGRAM 4.SERVO & SYSCON SCHEMATIC DIAGRAM...
Page 33 CIRCUIT DIAGRAM 5.DIGITAL AUDIO SCHEMATIC DIAGRAM...
Page 34 CIRCUIT DIAGRAM 6. Hi-Fi & SW CIRCUIT DIAGRAM...
Page 35 CIRCUIT DIAGRAM 7.INPUT/AUTPUT SCHEMATIC DIAGRAM...
Page 36 CIRCUIT DIAGRAM ATATI...
Page 37 CIRCUIT DIAGRAM...
Page 38 CIRCUIT DIAGRAM...
Page 39 CIRCUIT DIAGRAM DECODER...
Page 40: Pcb Circuit Board
PCB CIRCUIT BOARD 1-1 . VCR (MAIN)
Page 41 PCB CIRCUIT BOARD 1-2. POWER...
Page 42 PCB CIRCUIT BOARD 1-3. LOGIC...
Page 43 PCB CIRCUIT BOARD 2-1. DVD (MAIN)- A...
Page 44 PCB CIRCUIT BOARD 2-2 . DVD (MAIN)- B...
Page 45: 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 Remove 2 screws, then remove LEG FIG. 1 B.
Page 46 INSTRUMENT DISASSEMBLY C. PANEL FRONT DISASSEMBLY @ Remove 2 Hooks at left and right sides, Simultaneously, remove panel. ! Remove 3 Hooks at bottom FIG. 3 D. LOGIC PCB DISASSEMBLY Remove 7 Hooks, then remove Logic PCB FIG. 4...
Page 47 INSTRUMENT DISASSEMBLY E. DECK AND MAIN PARTS DISASSEMBLY ! Remove 6 screws, then remove DECK # Remove 2 screws, then remove LOADER PCB @ Remove 4 screws, then remove LOADER $ Remove 3 screws, then remove POWER PCB FIG. 5...
Page 48 INSTRUMENT DISASSEMBLY F. MAIN PCB DISASSEMBLY @ Remove 1 screws, then remove MAIN PCB ! Remove 3 screws FIG. 6...
Page 49 INSTRUMENT DISASSEMBLY G. MAIN CHASSIS DISASSEMBLY ! Remove 6 screws, then remove MAIN CHASSIS FIG. 7...
Page 50: Electrical Partslist
PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK Z001 PVMPMSN619 PCB MAIN MANUAL AS DV6T811N-LT C209 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 AM01 2193100801 SOLDER WIRE SN:PB=63:37 3PI(NO FLUX) C211 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608...
Page 51 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK C616 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 Q259 T2SC2412KB TR CHIP 2SC2412K-T146-BR C617 HCBK102KBA C CHIP CERA 50V X7R 1000PF K 1608 Q260 T2SC2412KB TR CHIP 2SC2412K-T146-BR C618 HCBK223KBA C CHIP CERA...
Page 52 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK R269 HRFS822JBA R CHIP 1/16 8.2K OHM J 1608 R609 HRFS122JBA R CHIP 1/16 1.2K OHM J 1608 R271 HRFS332JBA R CHIP 1/16 3.3K OHM J 1608 R610 HRFS102JBA R CHIP 1/16 1K OHM J 1608 R273 HRFS222JBA...
Page 53 HRFS331JBA R CHIP 1/16 330 OHM J 1608 C292 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 Z0012 PVMPJRN619 PCB MAIN RADIAL AS DV6T811N-LT C293 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 C101 CEXF1C220A C ELECTRO 16V RSM 22MF (5X7) C295...
Page 54 5CPX680J2T COIL PEAKING 68UH(BLU-BLK) X301 5XE3R579TB CRYSTAL QUARTZ HC-49/U 3.579545MHZ 15PPM L202 5CPX680J2T COIL PEAKING 68UH(BLU-BLK) Z0013 PVMPJAN619 PCB MAIN AXIAL AS DV6T811N-LT L250 5CPX101J2T COIL PEAKING 100UH(BRN-BRN) AM31 2TM1456000 TAPE MASKING SI-602 L251 5CPX101J2T COIL PEAKING 100UH(BRN-BRN) AM31A 2TM110620R...
Page 55 ELECTRICAL PARTSLIST D856 DZUZ5R1BSB DIODE ZENER UZ-5.1BSB(4.97-5.18V) R278 RD-AZ511J- R CARBON FILM 1/6 510 OHM J D857 DZN4004 - DIODE 1N4004(AUTO) R287 RD-AZ474J- R CARBON FILM 1/6 470K OHM J D858 DZUZ3R9BSA DIODE ZENER UZ-3.9BSA(3.77-3.98V) R298 RD-AZ203J- R CARBON FILM 1/6 20K OHM J D859 DZUZ33BSB-...
Page 56 U001 97P65305UA PCB UNION1 330X246X1.6T/3 P703 97P62M10CL CONN HOUSING 35234-2010(LOGIC) Z004 PVM2MSN619 PCB DVD MANUAL AS DV6T811N-LT Z0031 PVLAJ1L133 PCB LOGIC CHIP AS DV6T91 AM01 2193100801 SOLDER WIRE SN:PB=63:37 3PI(NO FLUX) C702 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608...
Page 57 ELECTRICAL PARTSLIST PARTS_CODE PARTS_NAME PARTS_DESCR REMARK PARTS_CODE PARTS_NAME PARTS_DESCR REMARK C405 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 C520 HCQK220JBA C CHIP CERA 50V CH 22PF J 1608 C406 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 C525 HCFH104ZBA C CHIP CERA...
Page 58 CEXF1C470A C ELECTRO 16V RSM 47MF (5X7) TP R518 HRFS330JBA R CHIP 1/16 33 OHM J 1608 Z800 PVPWMSN619 PCB POWER MANUAL AS DV6T811N-LT(120V) R519 HRFS330JBA R CHIP 1/16 33 OHM J 1608 AP01 2193100801 SOLDER WIRE SN:PB=63:37 3PI(NO FLUX)
Page 59 IC PHOTO COUPLER K1010HE01 L823 56C220K695 COIL CHOKE(CAP TYPE) 22UH K (CAP TYPE) 9X11.1 L802 5PLFBLF216 FILTER LINE BLF-2116 Z8012 PVPWJAN619 POWER AXIAL AUTO AS DV6T811N-LT(120V) P801 97P62Y04X4 CONN WAFER YW396 4P NC AP31 2TM1456000 TAPE MASKING SI-602 P802 97P62A09AB CONN WAFER 1-440052-1 PLUG 11P 2.5...

This manual is also suitable for:

Dv6t813n-qj Dv6t821n-qj Dv6t813n-qj/x Dv6t823n-qj Dv6t823n-qjx Dv6t821n-qj/x ... Show all