Daewoo DV-K813S Series Service Manual
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Daewoo DV-K813S Series Service Manual

Daewoo DV-K813S Series Service Manual

Video cassette recorder all k60-mecha (hi-fi/mono)
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Service Manual
Video Cassette Recorder
ALL K60-MECHA (Hi-Fi/MONO)
Model: (SECAM MODELS)
DV-K813S / K413S / K213S Series
DV-K823S / K423S / K223S Series
DV-K843S / K443S / K243S Series
DV-K863S / K463S / K263S Series
DV-K873S / K473S / K273S Series
DV-K893S / K493S / K293S Series
DV-K9A3S / K4A3S Series
DV-K813S
DV-K833S
DV-K863S
DV-K893S
DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr
S/M No. : VK813SEEF0
A
F2GHA0
Aug. 2000

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  • Page 1 DV-K843S / K443S / K243S Series DV-K863S / K463S / K263S Series DV-K873S / K473S / K273S Series DV-K893S / K493S / K293S Series DV-K9A3S / K4A3S Series DV-K813S DV-K833S F2GHA0 DV-K863S DV-K893S DAEWOO ELECTRONICS CO., LTD. http : //svc.dwe.co.kr Aug. 2000...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SAFETY & PRECAUTIONS ....................2 EXTERNAL VIEWS ......................4 FRONT VIEWS FUNCTION ........................4 REAR VIEWS FUNCTION ........................6 ELECTRICAL ADJUSTMENT.................... 7 SPECIFICATIONS ......................8 VOLTAGE CHART ......................9 CIRCUIT DIAGRAM ...................... 14 POWER CIRCUIT DIAGRAM......................... 14 SYSCON CIRCUIT DIAGRAM .......................

  • Page 3: Safety&Precautions

    SAFETY&PRECAUTIONS SAFETY CHECK AFTER SERVING Examine the area surrounding the repaired location for damage or deterioration. Observe that screw, parts and wires have been returned to original positions. Afterwards, perform the following tests and conform the specified values in order to verify compliance whit safety standards.
  • Page 4 SAFETY&PRECAUTIONS 4. Leakage current test Confirm specified or lower leakage current between B(earth ground, power cord plug prongs) and externally exposed accessi- ble parts (RF terminals, antenna terminals, video and audio input output terminals, microphone jacks, earphone jacks, etc.) Measuring method:(Power ON) Insert load Z between B(earth ground, power cord plug prongs) and exposed accessible parts.

  • Page 5: External Views

    EXTERNAL VIEWS 1. FRONT VIEWS FUNCTION DV-K813S FRONT VIEW DV-K823S FRONT VIEW DV-K833S FRONT VIEW DV-K843S FRONT VIEW...
  • Page 6 EXTERNAL VIEW DV-K863S FRONT VIEW DV-K873S FRONT VIEW DV-K893S FRONT VIEW DV-K9A3S FRONT VIEW POWER REWIND / REVIEW STOP / EJECT FAST FORWARD / CUE RECORD PLAY BACK FRONT VIDEO/AUDIO INPUT JACK CHANNEL UP / DOWN...

  • Page 7: Rear Views Function

    EXTERNAL VIEWS 2. REAR VIEWS FUNCTION MONO 2 SCART TYPE REAR VIEW HI-FI 2 SCART TYPE REAR VIEW...

  • Page 8: Electrical Adjustment

    ELECTRICAL ADJUSTMENT 1. PLAYBACK PHASE ADJUSTMENT TEST TEST INPUT ITEM MODE CHECK POINT POINT EQUIPMENT TAPE SIGNAL 6.5H PIN 4 & PIN 5 PLAY [REC] BUTTON OSCILLOSCOPE DP-2 NO SIGNAL ADJUSTMENT OF P504 ADJUSTMENT PARTS MEASURING POINT PCB : MAIN - TOP VIEW OSCILLOSCOPE BLOC PRE-...

  • Page 9: Specifications

    SPECIFICATIONS GENERAL Power Requirement AC 230V, 50Hz Power Consumption Max. 17W (in REC mode) Temperature 5×C ~ 35×C (Operating) -20×C ~ 60×C Operating position Horizontal only Dimensions (W x H x D) 360 x 90 x 288 (mm) Weight Approx. 3.85 Kg Format VHS standard Tape Width...

  • Page 10: Voltage Chart

    VOLTAGE CHART PDC/VPS IC EEPROM SECAM.L IC (IC361, LA7358M) (IC151, LC74793) (IC503, ATM24C16) PIN NO. PIN NO. PIN NO. 2.64 2.68 2.68 2.72 4.98 5.12 5.24 5.29 4.74 MOTOR DRIVE IC 1.63 3.18 (IC502, KA3082) 1.63 3.18 PIN NO. 0.82 1.35 0.01 0.01...
  • Page 11 VOLTAGE CHART A/V ICHIP IC (IC301, HA118517F, HITACHI SHRINK VERSION) PIN NO. PIN NO. PIN NO. PIN NO. 3.78 4.25 4.25 A/V SW IC (IC601, MM1443XJ) PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 12 VOLTAGE CHART HI-FI IC (IC251, TDA9605H) PIN NO. PIN NO. PIN NO. PIN NO. 0.03 3.85 3.81 9.42 9.36 3.81 3.81 3.83 3.83 3.86 3.77 4.21 0.53 3.81 3.81 3.86 3.85 0.53 3.33 3.31 0.74 4.18 0.53 4.56 4.56 0.17 3.81 3.81 4.55...
  • Page 13 VOLTAGE CHART PIN NO. PIN NO. PIN NO. PIN NO. 1.66 1.69 1.69 2.32 2.35 2.26 2.27 TMI (RF101, LGTMI-SLQ1-S) PIN NO. PIN NO. PIN NO. PIN NO. 4.83 31.9 31.9 1.08 1.91 0.23 0.03 2.43 4.85 31.9 31.9 2.01 0.01 2.69 2.74...
  • Page 14 VOLTAGE CHART METHOD TO DISCRIMINATE WHICH VIDEO IC IS APPLIED FOR EACH K-MECHA MODEL MODEL K60D K60S HITACHI SANYO SANYO HITACHI SANYO HA118517F LA71594M HA118517F HA118511F LA71594M LA71598M LA71594M LA71598M (SHRINK TYPE) APPLIED VIDEO IC LA71598SM LA71598SM (SRINK TYPE) (SRINK TYPE) C210 (R) 2.2uF/50V...

  • Page 15: Circuit Diagram

    CIRCUIT DIAGRAM 1. POWER CIRCUIT DIAGRAM (230V ONLY)

  • Page 16: Syscon Circuit Diagram

    CIRCUIT DIAGRAM 2. SYSCON CIRCUIT DIAGRAM...

  • Page 17: A/V Circuit Diagram (Secam)

    CIRCUIT DIAGRAM 3. A/V CIRCUIT DIAGRAM (SECAM)

  • Page 18: Pif Circuit Diagram

    CIRCUIT DIAGRAM 4. PIF CIRCUIT DIAGRAM...

  • Page 19: Hifi & Sw Circuit Diagram

    CIRCUIT DIAGRAM 5. HIFI & SW CIRCUIT DIAGRAM...

  • Page 20: Sw Circuit Diagram

    CIRCUIT DIAGRAM 6. SW CIRCUIT DIAGRAM...
  • Page 21 CIRCUIT DIAGRAM 7. SHUTTLE / PATH JIG CIRCUIT DIAGRAM MICOM SYSTEM AUTO SET PWR COMP. F. AV GEMSTAR HEAD/SPEED D514 D513 PAL-I, I/I SECAM D501 D502 D503 D504 D507 D509 D512 PAL-B/G, BG/ PAL-I,I/I PAL-B/ PAL-I, I/I SECAM G,BG/DK SECAM SECAM (FRANCE) SECAM (SWISS) NON-PDC...

  • Page 22: Waveforms On Video Circuit

    WAVEFORMS ON VIDEO CIRCUIT 1. WAVEFORMS IN THE EE MODE(COLOR BAR INPUT) 1 Pin 36 of IC301 2 Pin 36 of IC301 3 Pin 29 of IC301 4 Pin 29 of IC301 (SECAM color bar input : (PAL color bar input : (SECAM color bar output : (PAL color bar output : 2.0Vp-p)
  • Page 23 WAVEFORMAS ON VIDEO CIRCUIT 4. WAVEFORM OF THE SECAM COLOR IN THE RECORD MODE(COLOR BAR INPUT) Pin 16 of IC361 Pin 12 of IC361 Pin 28 of IC301 (SECAM color input : (200mVp-p) (C.SYNC : 2Vp-p) 1.0Vp-p) 5. WAVEFORMS OF THE LUMINANCE IN THE PB MODE (DP-1 TEST TAPE) UP : Pin 11 of IC301(color Pin 46 of IC301 Pin 41 of IC301...
  • Page 24 WAVEFORMAS ON VIDEO CIRCUIT 6. WAVEFORMS OF THE PAL COLOR IN THE PB MODE (DP-1 TEST TAPE) UP : Pin 11 of IC301(color Pin 29 of IC301 Pin 57,59 of IC301 rotary : 0.5Vp-p) (Video out : 2.0Vp-p) (240mVp-p) DOWN : Pin 74 of IC301 (500mVp-p) Pin 61 of IC301 (300mVp-p)

  • Page 25: Components Location Guide On Pcb Bottom View

    COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 1. PCB MAIN...

  • Page 26: Disassembly

    DISASSEMBLY 1. PACKING ASS’ Y...

  • Page 27: Front Panel Assembly

    DISASSEMBLY 2. FRONT PANEL ASSEMBLY DV-K813S SERIES DV-K823S SERIES...
  • Page 28 DISASSEMBLY DV-K873S SERIES DV-K893S SERIES...
  • Page 29 DISASSEMBLY DV-K843S SERIES DV-K863S SERIES...
  • Page 30 DISASSEMBLY DV-K9A3S SERIES...

  • Page 31: Instrument Disassembly

    DISASSEMBLY 3. INSTRUMENT DISASSEMBLY 3-1. TOP COVER REMOVAL ( FIG.1 ) 1) Remove five (5) screws holding the top cover. 2) Carefully lift the back of the top cover and slide to the rear to remove.
  • Page 32 DISASSEMBLY 3-2. FRONT PANEL REMOVAL ( FIG.2 ) 1) Remove the top cover. 2) Release seven (7) tabs holding the front panel. 3) Remove the front panel.
  • Page 33 DISASSEMBLY 3-3. BOTTOM COVER REMOVAL ( FIG.3 ) 1) Remove the top cover and front panel. 2) Remove three (3) screws. 3) Release four (4) tabs and lift out the bottom cover.
  • Page 34 DISASSEMBLY 3-4. F/L DOOR REMOVAL ( FIG.4 ) ° 1) Open the F/L door 90 2) Remove the F/L door in the direction of arrow.
  • Page 35 DISASSEMBLY 3-5. COVER PRE-AMP / DECK AS REMOVAL ( FIG.5 ) 1) Remove five (5) screws. 2) Disconnect the connector and FPC. 3) Pull out the DECK AS and COVER PRE-AMP in the direction of arrow.

  • Page 36: Pcb Main As

    DISASSEMBLY 3-6. PCB MAIN AS REMOVAL ( FIG.6 ) 1) Remove two (2) screws. 2) Release three (3) tabs and lift out the main PCB in the direction of arrow.
  • Page 37 ELECTRICAL PARTS LIST “ ” is a recommendable part for stock. 1. PCB MAIN AS PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK A1901 7274300611 SCREW TAPPTITE TT3 RND 3X6 MFZN PVMCASS109 CHASSIS MAIN AS DV-K823SY-AQ A2100 97SA311600 IDLER PLATE AS K-MECHA A001 97P0610600...
  • Page 38 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK IC502 1KA3082--- IC DRIVER KA3082B C213 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 IC803 1PC-17L1BB IC PHOTO COUPLER PC-17L1BB CTR100-200 C216 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 JK601 97P6313300 JACK DOUBLE SCART...
  • Page 39 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK C369 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 C632 HCQK330JCA C CHIP CERA 50V CH 33PF J 2012 C373 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C633 HCQK330JCA C CHIP CERA...
  • Page 40 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK RJ18 HRF8000-EA R CHIP 1/8 0 OHM 3216 R227 HRFT229JCA R CHIP 1/10 2.2 OHM J 2012 RJ20 HRF8000-EA R CHIP 1/8 0 OHM 3216 R228 HRFT229JCA R CHIP 1/10 2.2 OHM J 2012 RJ21 HRF8000-EA...
  • Page 41 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK R369 HRFT102JCA R CHIP 1/10 1K OHM J 2012 C018 CCXB1H332K C CERA 50V B 3300PF K (TAPPING) R371 HRFT102JCA R CHIP 1/10 1K OHM J 2012 C055 CEXF1C100A C ELECTRO 16V RSM 10MF 4X7 R375...
  • Page 42 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK C318 CEXF1C100A C ELECTRO 16V RSM 10MF 4X7 C828 CEXF1E221V C ELECTRO 25V RSS 220MF (8X11.5) TP C319 CEXF1C220A C ELECTRO 16V RSM 22MF (5X7) C829 CEXF1E221V C ELECTRO 25V RSS 220MF (8X11.5) TP C322 CEXF1H109A...
  • Page 43 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK Q506 TZTC3203Y- KTC3203Y (2120Y) C302 CCZF1H473Z C CERA 50V F 0.047MF Z Q507 TZTC3203Y- KTC3203Y (2120Y) C323 CCZF1H104Z C CERA 50V HIKF 0.1MF Z Q508 TZTC3203Y- KTC3203Y (2120Y) C325 CCZF1H104Z C CERA 50V HIKF 0.1MF Z...
  • Page 44 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK D537 85801060TA WIRE COPPER 0.6X52MM TAPING JP038 85801060TA WIRE COPPER 0.6X52MM TAPING D602 DZUZ13BSB- DIODE ZENER UZ-13BSB(12.59-13.16V) JP039 85801060TA WIRE COPPER 0.6X52MM TAPING D603 DZUZ13BSB- DIODE ZENER UZ-13BSB(12.59-13.16V) JP041 85801060TA WIRE COPPER 0.6X52MM TAPING...
  • Page 45 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK R006 RD-AZ221J- R CARBON FILM 1/6 220 OHM J R405 RD-AZ511J- R CARBON FILM 1/6 510 OHM J R009 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R406 RD-AZ511J- R CARBON FILM 1/6 510 OHM J R010...
  • Page 46 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK R559 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R821 RD-4Z360JS R CARBON FILM 1/4 36 OHM J SMALL R560 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R822 RD-AZ182G- R CARBON FILM 1/6 1.8K OHM G...
  • Page 47 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK JP066 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP147 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP069 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP148 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP070 85801065GY WIRE COPPER...
  • Page 48 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DISC REMARK PART-CODE PART-NAME PART-DISC REMARK JP206 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP240 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP207 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP241 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP208 85801065GY WIRE COPPER...
  • Page 49 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 : leesk@web.dwe.co.kr TEL : 82-2-360-7802 FAX : 82-2-360-7877...

  • Page 50: Appendix

    TROUBLE SHOOTING FLOW CHART Appendix 1. POWER CIRCUIT When changing the parts which are broken first, remove the power plug from the socket and then discharge the voltage across the terminals of C805. (Use an external K § Ù resistance) When check the primary circuit , use the oscilloscope isolated properly (Use the isolated transformer) and connect GND to the primary GND, however it is not necessary to isolate the oscilloscope when check the secondary circuit.
  • Page 51 TROUBLESHOOTING FLOW CHART Appendix B. CHECKING THE SECONDARY CIRCUIT. Check each output voltage Check trans former Check any diode which causes no power Check any COIL, or capacitor which causes no power...

  • Page 52: Pif Circuit

    TROUBLESHOOTING FLOW CHART Appendix 2. PIF CIRCUIT A. TROUBLESHOOTING OF RF RECEIVING CIRCUIT (FOR TMI APPLIED SYSTEM) Check the A/V Switching and Is Video Signal at Video Out point, Video Circduit. Pin No. 24 of TMI Block? (In case of 2 SCART System) Is Audio signal at Audio Out point, Check the video Circuit.

  • Page 53: Servo-Syscon Circuit

    TROUBLESHOOTING FLOW CHART Appendix 3. SERVO-SYSCON CIRCUIT Playback picture Adjust tracking. is not good Noise appears Noise appears Check and re-adjust although although change the path of Deck. adjusting tracking. cassette tape. CTL HEAD height Adjust the HEAD Is CTL pulse output is normal and height and at pin 97 of IC501?
  • Page 54 TROUBLESHOOTING FLOW CHART Appendix Playback picture is not good. Noise appears on the Noise appears on the Check flow A. screen on the whole. screen at the bottom Adjust the PG in SVC mode. Is SW-pulse applied to Is sw pulse supplied Check D.PG input video IC? from pin 18 of IC501?
  • Page 55 TROUBLESHOOTING FLOW CHART Appendix Auto-stop during playback. Is reel pulse applied to Check reel sensor. pin 79 and 80 of IC501? Is D. FG applied to Check connector and pin 89 of IC501? D. FG circuits. Check IC501.
  • Page 56 TROUBLESHOOTING FLOW CHART Appendix Drum M/T loading stops. Is motor 12V supplied Check Q503. from IC502 pin7, 8? Check power module. Is 5.2V supplied from Check D519. POWER CIRCUIT? Check connector and motor.
  • Page 57 TROUBLESHOOTING FLOW CHART Appendix Capstan M/T loading stops. Check power Module. Is motor 17V supplied? Is the input of pin 6 Check circuit of of P501 2.5V~3.5V? R583, R582, C550. Check R581, R579. Is pin 4 of P501 2.5V? Does pin 77 of IC501 Check IC501.
  • Page 58 TROUBLESHOOTING FLOW CHART Appendix Drum M/T and capstan M/T rotate at regular speed. (IN REC MODE) Is C. sync applied to Check C. sync of video pin 58 of IC501? IC and pattern. Check motor Emergency mode when plugging (power cord) Is ever 5V applied? Check power Module.
  • Page 59 TROUBLESHOOTING FLOW CHART Appendix Cassette is not inserted. Check power Module. Is motor 13V supplied? CAM DATA is changed Check connector. when CST IN? Is 5V supplied at Check Deck part. pin 81 of IC501? Check pattern Check IC501. and R571.
  • Page 60 TROUBLESHOOTING FLOW CHART Appendix Power compensation does not operate. When mains is unplugged, Check C524, C525, is 3.6V at pin 37 of IC501? C526. Is (sine) signal applied to Check X502. pin 35 and 36 of IC501? Check reset circuit Is 5V at pin 34 of IC501? of IC504.

  • Page 61: Audio Circuit (Normal)

    TROUBLESHOOTING FLOW CHART Appendix 4. AUDIO CIRCUIT (NORMAL) A. TROUBLESHOOTING OF PB MODE No sound in the playback mode Is 5V applied to Is the output at pin 96 Check power circuit IC301? of IC301? Is "REC H" less than Is clock and data applied Check A/V select circuit to pin 23, 24 of IC301?
  • Page 62 TROUBLESHOOTING FLOW CHART Appendix B. TROUBLESHOOTING OF REC MODE No sound in the playback mode after recording Is signal input into pin Check A/V 76 or 78 of IC 301? select circuit Is 5V applied to Check SYSCON IC 301? Is the voltage above 4V Is clock and data applied Check SYSCON...
  • Page 63 TROUBLESHOOTING FLOW CHART Appendix C. TROUBLESHOOTING OF EE MODE No sound in the EE modes Playback picture Is there output at Check pattern is not good pin 76 or 78 of IC301? Is there output at Is clock and data applied Check IC501 pin 96 of IC301? to pin 23,24 of IC301?

  • Page 64: Video Circuit

    TROUBLESHOOTING FLOW CHART Appendix 5. VIDEO CIRCUIT A. TROUBLESHOOTING OF EE MODE Is the Signal obtained from Check A/V SW Circuit. pin 21 of IC601 ? (A/V SW. circuit) Is the video signal from Check PCB pattern pin 21 of IC601 fed to and adjacent circuit pin 36 of IC301? Is ON/OFF 5V supplied to...
  • Page 65 TROUBLESHOOTING FLOW CHART Appendix B. TROUBLESHOOTING OF PREAMP IN THE PLAYBACK MODE Is the signal from heads fed to pin 8 and pin 9 Check drum and (LP mode) or pin 4 and deck mechanism pin 6 (SP mode) of P401? Is ON/OFF 5V Supplied Check ON/OFF 5V To IC 301?
  • Page 66 TROUBLESHOOTING FLOW CHART Appendix C. TROUBLESHOOTING OF LUMINANCE SIGNAL IN THE RECORD MODE Is the video signal obtained Check AV SW circuit from pin 21 of IC601 (AV SW circuit)? Is the video signal from Check PCB pattern and pin 21 of IC601 adjacent circuits.
  • Page 67 TROUBLESHOOTING FLOW CHART Appendix D. TROUBLESHOOTING OF PAL COLOUR IN THE RECORD MODE Is the video signal obtained from pin 21 of IC601 Check AV SW circuit (A/V SW circuit)? Is the video signal from pin 21 Check PCB pattern and of IC601 fed to pin 36 of IC301? adjacent circuit Is ON/OFF 5V supplied to...
  • Page 68 TROUBLESHOOTING FLOW CHART Appendix E. TROUBLESHOOTING OF SECAM COLOUR IN THE RECORD MODE Is the video signal obtained from pin 21 of IC361 Check IC361 through pin 30 of IC301? Is ON/OFF 5V supplied to pin 5 Check ON/OFF 5V and pin 17 of IC 361 at 5 volts? Is the signal from 24 of IC361 Check IC 361...
  • Page 69 TROUBLESHOOTING FLOW CHART Appendix F. TROUBLESHOOTING OF LUMINANCE IN THE PLAYBACK MODE Is the luminance signal from Check Q302 Pin 21 fed to pin 20 of IC 301 through Q302? Is the luminance signal from Check IC 301 pin 18 fed to pin 17 of IC 301? Check -COM...
  • Page 70 TROUBLESHOOTING FLOW CHART Appendix G. TROUBLESHOOTING OF PAL COLOUR IN THE PLAYBACK MODE Is the signal from pin 52,54 Check IC301 of IC 301 fed to pin 51 of IC 301? Is the signal obtained from Check IC301 pin 61 of IC301? Is colour rotary supply to Check C.ROT pin 10 of IC 301?

  • Page 71: Μ-Com Port

    µ-COM PORT DESCRIPTION Appendix NAME PORT ASSIGNMENT ACTIVE THIS PORT IS USUALLY OPEN BUT CAP I LIM P110/AN8 OUTPUTS THE CAPSTAN STOP STATE DECK(CAPSTAN) OF FRAME ADVANCE SHUTTLE DATA1 P77/AN7 SHUTTLE DATA INPUT SHUTTLE ASS’ Y WHEN POWER IS DISCONNECTED THIS PORT DETECTS POWER FAILURE AND PWR FAIL/ THEN GOES INTO POWER...
  • Page 72 Appendix µ-COM PORT DESCRIPTION NAME PORT ASSIGNMENT ACTIVE SEG 2 P55/RTP25 SEGMENT 2 PULSE LED DISPLAY SEG 3 P54/RTP24 SEGMENT 3 PULSE LED DISPLAY SEG 4 P53/RTP23 SEGMENT 4 PULSE LED DISPLAY SEG 5 P52/RTP22 SEGMENT 5 PULSE LED DISPLAY SEG 6 P51/RTP21 SEGMENT 6...
  • Page 73 Appendix µ-COM PORT DESCRIPTION NAME PORT ASSIGNMENT ACTIVE EDS IN OSD EDS VIDEO INPUT C SYNC COMPOSITE SYNC DATA INPUT PULSE VIDEO EEPROM, PDC, NICAM, PIF, SW, HiFi II C DATA P04/OUT1 SERIAL DATA II C CLK P03/OUT2 EEPROM, PDC, NICAM, PIF, SW, HiFi CLK SERIAL CAPSTAN MOTOR FORWARD(L)/ CAP F/R...
  • Page 74 Appendix µ-COM PORT DESCRIPTION NAME PORT ASSIGNMENT ACTIVE P81/DRFGin DRUM FG INPUT PULSE DECK(DRUM) DRPGin DRUM PG INPUT PULSE DECK(DRUM) AMP Vrefout AMP Vrefout AMP Vrefout AMP Vrefin AMP Vrefin AMP Vrefin P80/C CTL- CTL- CTL - CTL+ CTL+ CTL + AMP C AMP C CTL AMP...
  • Page 75 µ-COM PORT DESCRIPTION Appendix NAME PORT ASSIGNMENT ACTIVE THIS PORT IS USUALLY OPEN BUT CAP I LIM P110/AN8 OUTPUTS THE CAPSTAN STOP STATE DECK(CAPSTAN) OF FRAME ADVANCE SHUTTLE DATA1 P77/AN7 SHUTTLE DATA INPUT SHUTTLE ASS’ Y WHEN POWER IS DISCONNECTED THIS PORT DETECTS POWER FAILURE AND PWR FAIL/ THEN GOES INTO POWER...
  • Page 76 Appendix µ-COM PORT DESCRIPTION NAME PORT ASSIGNMENT ACTIVE SEG 2 P55/RTP25 SEGMENT 2 PULSE LED DISPLAY SEG 3 P54/RTP24 SEGMENT 3 PULSE LED DISPLAY SEG 4 P53/RTP23 SEGMENT 4 PULSE LED DISPLAY SEG 5 P52/RTP22 SEGMENT 5 PULSE LED DISPLAY SEG 6 P51/RTP21 SEGMENT 6...
  • Page 77 Appendix µ-COM PORT DESCRIPTION NAME PORT ASSIGNMENT ACTIVE EDS IN OSD EDS VIDEO INPUT C SYNC COMPOSITE SYNC DATA INPUT PULSE VIDEO EEPROM, PDC, NICAM, PIF, SW, HiFi II C DATA P04/OUT1 SERIAL DATA II C CLK P03/OUT2 EEPROM, PDC, NICAM, PIF, SW, HiFi CLK SERIAL CAPSTAN MOTOR FORWARD(L)/ CAP F/R...
  • Page 78 Appendix µ-COM PORT DESCRIPTION NAME PORT ASSIGNMENT ACTIVE P81/DRFGin DRUM FG INPUT PULSE DECK(DRUM) DRPGin DRUM PG INPUT PULSE DECK(DRUM) AMP Vrefout AMP Vrefout AMP Vrefout AMP Vrefin AMP Vrefin AMP Vrefin P80/C CTL- CTL- CTL - CTL+ CTL+ CTL + AMP C AMP C CTL AMP...

  • Page 79: Service Mode

    SERVICE MODE Appendix 1. SERVICE MODE ITEM REMARKS 1. Press the [MENU] button to go to [MAIN MENU] screen and press the number [484] in sequence then MAIN MENU go to [SERVICE MODE] screen. Timer Program 2. ENGLISH only for this special menu. Timer Review VCR Setup 3.
  • Page 80 Appendix SERVICE MODE 2. SVC MODE FOR REPAIR 2 - 1. ERROR CHECK MODE ITEM REMARKS 1. Press the number 1 button , then OSD 1 is displayed in the initial SVC mode screen. SVC MODE FOR REPAIR DECK JIG CONNECTION MODE (OFF) EE MODE WITHOUT DECK MODE(OFF)
  • Page 81 Appendix SERVICE MODE 2 - 2. DECK JIG CONNECTION MODE ITEM REMARKS 1. Press the number 1 button, OFF ¡ ê ON is toggled in the SVC MODE FOR REPAIR screen. * The initial state is set to OFF mode. 2 - 3.
  • Page 82 Appendix SERVICE MODE 4. CHANGE OF EEPROM DATA ITEM REMARKS * [CHANGE OF EEPROM DATA] is used to change the VIDEO/AUDIOcharacteristic data. 0 0 0 1 1 1 0 1 1. Press number [3] button to activate the mode. 1 1 1 1 1 1 1 0 1 0 0 0 0 0 1 0 2.
  • Page 83 Appendix SERVICE MODE 7. THE METHOD TO INITIALIZE THE VIDEO DATA 1. When [484] is sequentially pressed in MENU mode, the SERVICE mode is activated. 2. Choose “ CHANGE OF VIDEO DATA” by pressing [3]. 3. The input video signal should be PAL or null signal and the speed should be SP. 4.
  • Page 84 Appendix SERVICE MODE 9. SANYO A/V 1CHIP SERIAL CONTROL TABLE(LA71594M)
  • Page 85 Appendix SERVICE MODE 10. SANYO A/V 1CHIP SERIAL DATA TABLE(PAL 4CH) - PAL, SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3...
  • Page 86 Appendix SERVICE MODE - MESECAM,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3 Gr 4 Gr 4 Gr 4 Gr 5...
  • Page 87 Appendix SERVICE MODE 11. SANYO A/V 1CHIP SERIAL DATA TABLE(PAL 2CH, SP ONLY) - PAL,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3...
  • Page 88 Appendix SERVICE MODE 12. SANYO A/V 1CHIP SERIAL DATA TABLE(PAL 2CH, SP/LP) - PAL,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3...
  • Page 89 Appendix SERVICE MODE - MESECAM,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3 Gr 4 Gr 4 Gr 4 Gr 5...
  • Page 90 Appendix SERVICE MODE 13. SANYO A/V 1CHIP SERIAL DATA TABLE(SECAM 4CH) - PAL,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3...
  • Page 91 Appendix SERVICE MODE -MESECAM,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3 Gr 4 Gr 4 Gr 4 Gr 5 Gr 5...
  • Page 92 Appendix SERVICE MODE -SECAM,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3 Gr 4 Gr 4 Gr 4 Gr 5 Gr 5...
  • Page 93 Appendix SERVICE MODE 14. SANYO A/V 1CHIP SERIAL DATA TABLE(SECAM 2CH) -PAL,SP (EE/REC) (PB) (TRICK) Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr ¡ ¬ Bit Gr 1 Gr 1 Gr 1 Gr 2 Gr 2 Gr 2 Gr 3 Gr 3 Gr 3 Gr 4...

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