S/M No:CN071N-010 Service Manual TV / VCR Combination CHASSIS : CN-071 MODEL : DVQ-13H1FC DVQ-19H1FC DVQ-13H2FC DVQ-19H2FC DAEWOO ELECTRONICS CO., LTD http : //svc.dwe.co.
TABLE OF CONTENTS SAFETY PRECAUTIONS ................................................................................................. 2 SPECIFICATION .......................................................................................................... 5 BLOCK DIAGRAM ....................................................................................................... 6 IC DESCRIPTION .........................................................................................................
SAFETY PRECAUTIONS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER°ØS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANT RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES.
SAFETY PRECAUTIONS GRAPHIC SYMBOLS : CAUTION : Do not attempt to modify this product in any way. Unauthorized modifications will not only void the warranty, but may lead to your being liable for any resulting property damage or user injury. Service work should be performed only after you are thoroughly familiar with all of the following safety checks and servicing guidelines. To do otherwise, increases the risk of potential hazards and injury to the user.
SAFETY PRECAUTIONS SUBJECT : IMPLOSION 4. Wall and shelf mounted installations using a commercial mounting kit, must follow the factory approved mounting instructions. A receiver mounted to a shelf or platform must retain its original feet(or the equivalent thickness in spacers) to provide adequate are flow across the bottom, bolts or screws used for fasteners must not touch and parts or wiring. Perform leakage test on customized installations. 5.
SPECIFICATION ITEMS TV SECTION VIDEO SECTION GENERAL MODEL DVQ-13/19H1FC, DVQ-13/19H2FC STANDARD NTSC-M TUNING SYSTEM Frequency Synthesizer(FS) Tuning System TUNING RANGE VHF : 2 - 13(12) UHF : 14 -69(56) CATV : 1-125(125) ANTENNA INPUT IMPEDENCE 75 ohm Unbalanced AUXILIARY INPUT TERMINAL Front : Video, Audio FORMAT VHS NTSC Standard VCR SYSTEM Rotary 2-Head Helical Scanning Monaural System AUDIO RECORDING SYSTEM Monaural TAPE SPEED SP:33.35mm/sec; EP:11.12mm/sec LP:16.
BLOCK DIAGRAM 6
PH01 BLOCK DIAGRAM 7
IC DESCRIPTION 5 VIDEO ENV CAM D CAM C CAM B CAM A REC SAFETY (L) CAP FG IN AMP GND DRUM FG IN DRUM PG IN AMP REF IN AMP REF OUT CTL (-) CTL (+) CTL AMP OUT P8(7) P8(6) P8(5) CTL- CTL+ AMPC P8 (4)/INT2 PATH ADJUST P8 (3)/INT1 P7(5)/AN5 P8(2)/CPFGAMPOUT 4 CPFGIN /CPFGAMPIN DRUM SELECT AMPVSS P7(6)/AN6 P8(1)/DRFG IN 3 DRPG IN /DRPFG IN OPTION AMPVREFIN P7(7)/AN7 AMPVREFOUT P11(0)/AN8 2 P8 (0)/C 1 AMPV CC KEY1 AGC IN CTLAMPOUT 99 98 97 96 95 94 93 92 91 90 89 88 8
IC DESCRIPTION 1. SYSTEM FEATURE 1) 2) 3) 4) 5) 6) 7) The system for TV/VCR tuning is Frequency Synthesis type. VCR SERVO Controller is interior designed. Closed Caption function is interior designed. Parental Control function is interior designed. On Screen Display function is interior designed.
IC DESCRIPTION 2. PIN DESCRIPTION Pin Terminal Name Explanation 1 P11(0) KEY 1 IN Power, Ch up/down, Vol up/down 2 P7(7) AGC IN Connect this port to AGC of Tuner. Default voltage :3.75V Variable voltage : 3.25V, 3.5V, 3.75V 3 P7(6) OPTION H(5V) : Parental control M(2.5V) : Child lock L(0V) : None 4 P7(5) DRUM SELECT H(5V) : NTSC 4 head L(0V) : NTSC 2 head 5 P7(4) PATH ADJUST Automatic PATH adjust 6 P7(3) VIDEO ENVELOPE IN Connect this port to 6 pin of IZ01.
IC DESCRIPTION Pin Terminal Name 26 P4(7) 27 P4(6) 28 P4(5) REC LED H Light up LED(RED) when recording 29 P4(4) TIMER REC LED H Light up LED(GREEN) when ready to programming record. 30 P4(3) MONITOR ON H When CRT on, set "H". 31 P4(2) VCR ON H Recording when CRT off, set "H" 32 P4(1) RELAY ON H When CRT on, relay on during 1sec. 33 P4(0) 34 RESET RESET(L) RESET 35 P3(1) Xcin 36 P3(0) Xcout It uses 32.768KHz Crystal.
IC DESCRIPTION Pin Terminal Name Remarks 60 P0(4) 61 P0(3) 62 P0(2) OSD B OUT Blue output terminal of OSD image. 63 P0(1) OSD G OUT Green output terminal of OSD image. 64 P0(0) OSD R OUT Red output terminal of OSD image. 65 P10(7) S DATA IIC data I/O.
IC DESCRIPTION Pin 89 Terminal Explanation DRUM FG IN Drum Frequency Generator signal input. Feed back Drum rotation speed. 90 DRUM PG IN Drum Pulse Generator signal input. Feed back Drum rotation phase. 91 AMP REF IN Control pulse AMP reference input terminal. 92 AMP REF OUT Control pulse AMP reference output terminal. C AMP filter. 94 CTL- Input control pulse when playing. 95 CTL+ Output control pulse when recording. 96 AMP C AMP condenser. 97 CTL AMP OUT Check Control pulse.
IC DESCRIPTION IC501 DCT814B(LA76814B) : IC VIDEO PROCESSOR 14
IC DESCRIPTION ICY01 LA71550M : IC VCR Y/C & AUDIO PROCESSOR 15
IC DESCRIPTION I801 POWER CONTROL MODULE DPM 001 TI KSE 14 13 12 11 10 6 5 4 3 2 1 PIN NO DESCRIPTION PIN NO DESCRIPTION 1 GATE DRIVE1 10 +12V INPUT 2 OCP 11 POWER CONTROL 3 SOURCE 12 +26 OUTPUT 4 GND1 13 GND2 5 GATE 14 +133V INPUT 6 GATE DRIVE2 16
TROUBLESHOOTING GUIDE 1. NO POWER Check R802(10W 2.
TROUBLESHOOTING GUIDE 2. TV PART 2-1) NO PICTURE NG : GO to the figure a Check the waveform of I501 #46 OK : GO to the figure b Check Voltage a 33V 5V Check IF Vcc(5V) U102 TUNER Check Signal Check Reset #5 AFT #6 #10 #65 SDATA #34 VCC Z101 SAW FILT IF OUT #67 SCLK #4 I501 MCLK #71 #35 #36 #38 #44 Check Signal Check Signal b Z502 Check CHROMA Vcc(5V) Check HOR. Vcc(5V) #44 CC527 #43 #18 #19 Check RGB Signal Check Waveform XS02 Check the X-TAL Z502 4.
TROUBLESHOOTING GUIDE 2-2) NO SOUND NG : GO to the figure c Check the waveform of I501 #1 OK : GO to the figure d Check Voltage c 33V 5V Check IF Vcc(5V) U102 TUNER Check Signal Check Reset #5 AFT #6 #8 #10 #65 SDATA #67 SCLK #3 ICS01 TIMER/SYSCON #37 #71 #72 #35 #36 #38 #9 MCLK #12 MDATA Check FM filter circuit #54 #11 #52 #39 Check Signal XCS01 Check SIF Signal XS02 Check the X-TAL Check AGC Voltage #10 I501 #34 VCC Z101 SAW FILT IF OUT If SIF no signal, then cha
TROUBLESHOOTING GUIDE 2-3) CHANNEL DON’T STOP NG : Loss of signal or weak signal Check the input signal conditions.
TROUBLESHOOTING GUIDE 2-4) NO COLOR Check CVS waveform Check the voltage #44 CC527 Chroma/DEF Vcc #43 Check the voltage L502 RGB Vcc(9V) X501 3.
TROUBLESHOOTING GUIDE 2-5) NO VERTICAL DEFLECTION Check the voltage #43 L502 5V CC508 CC507 Check the voltage (2.5V) Check vertical output signal Chroma/DEF Vcc Check the crystal I501 #38 DCT814B #24 V RAMP ALC filter X501 3.58MHz From FBT D404 #23 Vertical IC Vcc(26V) RC301 #5 Invert RAMP IN #6 I301 LA7841 #2 OUTPUT Check the waveform VERTICAL D.
TROUBLESHOOTING GUIDE 2-6) NO ON-SCREEN DISPLAY Check the signal (15,734Hz) Check the signal (60Hz) H.SYNC Check data/clock signal #11 V.
TROUBLESHOOTING GUIDE 2-7) REMOTE CONTROL DOES NOT OPERATE Check the voltage #1 #100 RESET #34 Vcc(5V) #37 KEY 1 KEY 0 RT01 ICS01 TIMER/SYSCON Vcc(5V) #14 #35 #36 #38 XCS01 32KHz IT01 REMOCON PREAMP #39 Check the waveform XS02 16MHz Check the crystal 24
TROUBLESHOOTING GUIDE 3.
TROUBLESHOOTING GUIDE 3-2) NO ROTATING DRUM : GO to the figure h Check the Rotating CAPSTAN : GO to the figure i h Check the voltage #58 RESET #34 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 Vcc(12V) #59 #77 ICS01 TIMER/SYSCON #90 #89 #35 #36 #38 D-PWM #1 #2 D-PG Pulse PS01 DRUM CONNECTOR #3 & #4 D-FG Pulse #6 #39 Check D-PG/FG waveform XCS01 32KHz XS02 16MHz Check the crystal If PG/FG no signal, then change the DRUM.
TROUBLESHOOTING GUIDE 3-3) NO PICTURE PLAYBACK NG : GO to the figure j Check the waveform of ICY01 #27 OK : GO to the figure k j Check the crystal #39 Check the voltage RESET XS02 #34 16MHz #38 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 ICS01 TIMER/ SYSCON #35 XCS01 32KHz #36 #65 #67 #13 #18 #20 Check the crystal #6 Check SCL/SDA signal SDATA Video Envelope SCLK REC H QV SYNC Check voltage VH SW Pulse Check the waveform (30Hz) C Vcc #58 #16 #17 #14 #4 C-SYNC #19 CCD Vcc #56 SW V
TROUBLESHOOTING GUIDE k Check the crystal #39 Check the voltage RESET #34 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 XS02 16MHz #38 ICS01 TIMER/ SYSCON Check the crystal #35 XCS01 32KHz #36 #65 #67 #56 #71 #72 Check SCL/SDA signal Check MCL/MDA signal SDATA MDATA SCLK MCLK Check the waveform #12 #11 C Vcc #58 CCD Vcc #56 SW Vcc #39 Y Vcc #11 Check the voltage (5V) #16 #17 ICY01 VCR Y/C LA71550M Caption CVS #27 CVS #40 I501 #19 CHROMA DCT814B #42 #20 #21 Check the waveform
TROUBLESHOOTING GUIDE 3-4) NO COLOR PLAYBACK Check the crystal #39 Check the voltage RESET XS02 #34 16MHz #38 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 ICS01 TIMER/ SYSCON Check the crystal #35 XCS01 32KHz #36 #65 #67 #56 #71 #72 Check SCL/SDA signal Check MCL/MDA signal SDATA MDATA SCLK MCLK Check the waveform Check the waveform #12 #11 C Vcc CCD Vcc #58 #56 SW Vcc #39 Y Vcc #11 #16 #17 #13 #63 CCD BLOCK ICY01 VCR Y/C LA71550M Caption CVS #27 CVS #40 I501 #19 CHROMA DCT8
TROUBLESHOOTING GUIDE 3-5) NO SOUND PLAYBACK Check the crystal #39 Check the voltage RESET XS02 #34 16MHz #38 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 ICS01 TIMER/ SYSCON Check the crystal #35 XCS01 32KHz #36 #65 #67 #71 #72 #26 Check SCL/SDA signal Check MCL/MDA signal SDATA MDATA Check the voltage SCLK MCLK A.
TROUBLESHOOTING GUIDE 3-6) NO RECORD PICTURE NG : GO to the figure 2-1 (TV PART) Check the waveform of ICY01 #40 Check the waveform (30Hz) CTL(+) CTL HEAD m OK : GO to the figure m CTL(-) Check the crystal #94 Check the voltage RESET #34 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 #95 #39 XS02 16MHz #38 ICS01 TIMER/ SYSCON #35 XCS01 32KHz #36 #65 #67 Check SCL/SDA signal #15 #18 Check the crystal #20 SDATA SCLK C-rotary pulse REC H VH SW Pulse VH SW Pulse Check voltage Check wavef
TROUBLESHOOTING GUIDE 3-7) NO RECORD SOUND NG : GO to the figure 2-2 (TV PART) Check the waveform of ICY01 #74 OK : GO to the figure n n Check the crystal #39 Check the voltage XS02 #34 RESET 16MHz #38 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 ICS01 TIMER/ SYSCON Check the crystal #35 XCS01 32KHz #36 #65 #67 #71 #72 #26 Check SCL/SDA signal SDATA Check the voltage SCLK A.
TROUBLESHOOTING GUIDE 3-8) NO EXTERNAL VIDEO / AUDIO Check the crystal #39 Check the voltage XS02 #34 RESET 16MHz #38 Vcc(5V) #37 Vcc(5V) #98 Vcc(5V) #99 ICS01 TIMER/ SYSCON Check the crystal #35 XCS01 32KHz #36 #65 #67 #71 #72 Check SCL/SDA signal Check MCL/MDA signal SDATA MDATA SCLK MCLK #16 #17 SW Vcc #39 A Vcc #75 Check the voltage (5V) #12 #11 ICY01 VCR Y/C LA71550M #36 #78 #27 #81 CVS OUT #42 AUDIO OUT Check the waveform CVS IN Check the waveform AUDIO IN JP0
ELECTRICAL PARTS LIST CAUTION “I“is safety component, so it must be used the same component. r DVQ-19H1FC LOC I I I PART CODE PART NAME DESCRITION ZZ100 48B4139A02 TRANSMITTER REMOCON R-39A02 ZZ110 LOC PART CODE PART NAME M201 4852070100 MASK FRONT DESCRITION FR HIPS BK PTACPWJ690 ACCESSORY AS DVQ-20H1FC ZZ202 PTSPPWJ690 SPEAKER AS DVQ-20H1FC 20 486A716200 BATTERY AAAM 1.
ELECTRICAL PARTS LIST LOC C512 I I I I PART CODE CMXB1H333J PART NAME C MYLAR DESCRITION LOC 50V EU 0.033MF J (TP) PART CODE PART NAME DESCRITION CC118 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C518 CMXB1H473J C MYLAR 50V 0.047MF J (TP) CC119 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C525 CEXF1C101A C ELECTRO 16V RSM 100MF (6.3X7) TP CC120 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C604 CEXF1C101A C ELECTRO 16V RSM 100MF (6.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRITION LOC PART CODE PART NAME DESCRITION CCS12 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 CCU04 HCTAD100MB C CHIP TANTAL 10V 10MF M 3216 CCS13 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 CCU05 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 CCS14 HCTAF109MB C CHIP TANTAL 16V 1MF M 3216 CCU06 HCTBC470MB C CHIP TANTAL 6.3V 47MF M 3528 CCS16 HCBK103KCA C CHIP CERA 50V X7R 0.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRITION LOC PART CODE PART NAME DESCRITION CCY29 HCTAD100MB C CHIP TANTAL 10V 10MF M 3216 CU15 CEXF1C470V C ELECTRO 16V RSS 47MF (5X11) TP CCY30 HCTAF109MB C CHIP TANTAL 16V 1MF M 3216 CU16 CMXM2A333J C MYLAR 100V 0.033MF J (TP) CCY31 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 CU17 CMXM2A103J C MYLAR 100V 0.01MF J (TP) CCY32 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 CU18 CMXM2A223J C MYLAR 100V 0.
ELECTRICAL PARTS LIST LOC F801B I PART CODE PART NAME DESCRITION LOC PART CODE PART NAME DESCRITION 4857415001 CLIP FUSE PFC5000-0702 JC16-JC17 HRF8000-EA R CHIP 1/8 0 OHM 3216 I301 1LA7841--- IC VERTICAL LA7841 JC19-JC21 HRF8000-EA R CHIP 1/8 0 OHM 3216 I301 PTB2SW7100 HEAT SINK ASS`Y 1LA7841--- + 7174300811 JP01 4859109950 JACK PIN BOARD PH-JB-9710A I301A 4857027100 HEAT SINK SPCC T1.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRITION LOC PART CODE PART NAME DESCRITION P601 485923162S CONN WAFER YW025-03 (STICK) QCY02 T2SC2412KB TR CHIP 2SC2412K-T146-BR P802A 4859242220 CONN WAFER YFW800-02 QCY03 T2SA1037KB TR CHIP 2SA1037AKT146-R P803 4850701S06 CONNECTOR YFH800-01+YPT018+ULW=300 QCY04 T2SA1037KB TR CHIP 2SA1037AKT146-R P804 4857417500 TERM PIN DA-IB0214(D2.
ELECTRICAL PARTS LIST LOC R833 I PART CODE RD-4Z472J- PART NAME R CARBON FILM DESCRITION LOC PART CODE PART NAME DESCRITION 1/4 4.7K OHM J RC520 HRFT390JCA R CHIP 1/10 39 OHM J 2012 R836 RN01B124JS R METAL FILM 1W 120K OHM J SMALL RC521 HRFT914JCA R CHIP 1/10 910KOHM J 2012 R889 RC-2Z565KP R CARBON COMP 1/2 5.6M OHM K RC522 HRFT511JCA R CHIP 1/10 510 OHM J 2012 R902 RN01B152JS R METAL FILM 1W 1.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRITION LOC PART CODE PART NAME DESCRITION RCS03 HRFT102JCA R CHIP 1/10 1K OHM J 2012 RCS62 HRFT103JCA R CHIP 1/10 10K OHM J 2012 RCS06 HRFT000-CA R CHIP 1/10 0 OHM 2012 RCS63 HRFT473JCA R CHIP 1/10 47K OHM J 2012 RCS07 HRFT103JCA R CHIP 1/10 10K OHM J 2012 RCS64 HRFT103JCA R CHIP 1/10 10K OHM J 2012 RCS08 HRFT473JCA R CHIP 1/10 47K OHM J 2012 RCS65 HRFT273JCA R CHIP 1/10 27K OHM J 2012 RCS09 HRFT393JCA R CHIP 1/10
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRITION LOC PART CODE PART NAME DESCRITION RCU07 HRFT122JCA R CHIP 1/10 1.2K OHM J 2012 RCY25 HRFT473JCA R CHIP 1/10 47K OHM J 2012 RCU08 HRFT122JCA R CHIP 1/10 1.2K OHM J 2012 RCY26 HRFT473JCA R CHIP 1/10 47K OHM J 2012 RCU09 HRFT272JCA R CHIP 1/10 2.7K OHM J 2012 RCZ01 HRFT473JCA R CHIP 1/10 47K OHM J 2012 RCU10 HRFT122JCA R CHIP 1/10 1.
ELECTRICAL PARTS LIST LOC I I I PART CODE PART NAME DESCRITION SWT08 5S50101090 SW TACT SKHV17910A T401 50D0000022 TRANS DRIVE HD-15D T402 50H0000198 FBT FSA37012M LOC PART CODE X501 5XE3R5795C XCS01 XS02 PART NAME DESCRITION CRYSTAL QUARTZ HC-49/U 3.579545MHZ 20PPM HXA32R768C CRYSTAL CHIP QUARTZ 32.768KHZ 20PPM 8038 5XJ16R000E CRYSTAL QUARTZ HC-49S 16.000000MHZ 30PPM T802 50M3541T3- TRANS SMPS TSM-3541T3 XY01 5XE3R5795B CRYSTAL QUARTZ HC-49/U 3.
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DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC” E-mail : G7F00E@web.dwe.co.
