VX-G142 K SERVICE MANUAL INTEGRATED COLOR TV/VIDEO CASSETTE RECORDER BASIC TAPE MECHANISM : OVD-5 SPECIFICATIONS TV SECTION PICTURE TUBE DEFLECTION .......... TUNER SYSTEM ................................ CHANNEL COVERAGE ...................... TV SYSTEM ........................................ HORIZONTAL RESOLUTION ............ 230V AC, 50Hz 79W 12.5 kg (27.5 lbs.) 365(W) x 372(D) x 382(H) mm (14 3/8 x 14 3/4 x 15 1/8 in.) 14 in.
TABLE OF CONTENTS SPECIFICATIONS ............................................................................................................................................................ TABLE OF CONTENTS ................................................................................................................................................... SERVICING NOTICES ON CHECKING ..........................................................................................................................
SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual. Safety is secured against an X-ray by considering about the cathode-ray tube and the high voltage peripheral circuit, etc.
VCR TEST TAPE INTERCHANGEABILITY TABLE There are two types of the new alignment tape CH-1B (for NTSC) and CH-2 (for PAL). On each tape four signals (1) - (4) are recorded for the times and in the order shown below. (1) : 8min. ---> (2) : 2min. ---> (3) : 5min. ---> (4) : 5min. The TTV-MP1 (for M-PAL), TTV-MS1 (for MESECAM) and TTV-S1 (for SECAM) alignment tapes have the same contents as the previous tapes.
DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS Front Cabinet 1-1: BACK CABINET (Refer to Fig. 1-1) 1. Remove the 4 screws 1. 2. Remove the 2 screws 2. 3. Remove the Back Cabinet in the direction of arrow. CRT PCB Front Cabinet (A) 1 (B) 1 TV Block Fig. 1-2 2 1 1-3: VCR BLOCK (Refer to Fig. 1-3) 2 Back Cabinet 1 1. Remove the 2 screws 1. 2. Unlock the support 2. 3. Remove the VCR Block in the direction of arrow. Fig.
DISASSEMBLY INSTRUCTIONS 1-4: LOCATION OF PRINTED CIRCUIT BOARDS (Refer to Fig. 1-4) 1-7: FRONT LOADING UNIT 9, CHASSIS SECTION, JACK PLATE AND SYSCON PCB (Refer to Fig. 1-7-A) CAUTION: BEFORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB, UNPLUG THE POWER CORD FROM THE AC SOURCE. 1. 2. 3. 4. Remove the screw 1. Remove the screw 2. Remove the screw 3. Remove the Front Loading Unit 9 in the direction of arrow (A). 5. Remove the 3 screws 4. 6. Remove the 2 screws 5. 7.
DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DECK PARTS 2-1: LINK GEAR (R) / CAM GEAR (Refer to Fig. 2-1) 1. 2. 3. 4. 5. Top Bracket Unlock the support 1. Remove the BOT Sensor Cover and BOT Reflector. Unlock the 3 supports 2. Remove the Side Bracket R2 and Spring Earth. Remove the Flap Lever, Link Gear (R) , Cam Gear Ass'y and BOT Lever. 2 2 Bracket R Spring Joint Gear Side Bracket L 2 1 NOTES 3 2 Cassette Holder Ass'y 1. When installing the BOT Lever, insert the BOSS into the hole of Link Gear (R). 2.
DISASSEMBLY INSTRUCTIONS 2-5: CASSETTE SIDE L (Refer to Fig. 2-5) 2-7: TENSION BAND (Refer to Fig. 2-7) 1. Unlock the 2 supports 1. 2. Remove the Cassette Side L. 3. Remove the Pack Spring. 4. Remove the Locker Spring. 5. Unlock the support 2. 6. Remove the Locker L. 1. Remove the Tension Arm Spring 1. 2. Remove the Tension Arm Spring 2. 3. Remove the Tension Adjust. 4. Remove the Tension Arm Ass'y. 5. Remove the Tension Band Ass'y. 6. Remove the Tension Lever 2 Ass'y.
DISASSEMBLY INSTRUCTIONS Reel Disk S Pinch Roller Polyslider Washer 2 Reel Disk T Cassette Opener 3 Polyslider Washer 1 Spring Cam Pinch Polyslider Washer 4 3 (A) Spring P5 Polyslider Washer 5 Cam Pinch Roller (A) Fig. 2-8 Cam P5 Cam Gear 2-9: PINCH ROLLER / CASSETTE OPENER (Refer to Fig. 2-9) Arm P5 Ass'y 1. Unlock the support 1. 2. Remove the Pinch Roller. 3. Remove the screw 2. 4. Unlock the 2 supports 3. 5. Remove the Cassette Opener. 6. Remove the Spring P5 and Arm P5 Ass'y. 7.
DISASSEMBLY INSTRUCTIONS 1 1 Capstan Belt 1 2 2 Audio Control Head Mode Switch 2 1 1 Audio Control Head Spring Audio Control Head Spring Tension Lever Spring Plate Bottom Deck Chassis Audio Control Head Base Fig. 2-10 2-11: CYLINDER UNIT (Refer to Fig. 2-11) 1. Disconnect the following connectors: (CP4101 and CP4102) on the Head Amp PCB. 2. Remove the Joint Screw, then remove the Azimuth Spring. 3. Remove the 2 screws 1, then remove the Polyslider Washer and Cylinder Unit from the Main Chassis.
DISASSEMBLY INSTRUCTIONS 2-14: MAIN CAM (Refer to Fig. 2-14) 2-15: CAPSTAN DD UNIT (Refer to Fig. 2-15) 1. Remove the Loading Lever. 2. Remove the Main Brake Lever. 3. Remove the Capstan Brake Spring. 4. Remove the Capstan Brake Ass'y. 5. Remove the Main Rod Spring. 6. Remove the Tension Holder. 7. Remove the Tension Lever. 8. Remove the Main Cam. 9. Remove the Middle Gear. 10. Remove the Main Rod Ass'y. 1. Disconnect the following connector: (CP4105) on the Head Amp PCB. 2. Remove the 3 screws 1. 3.
DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to remove the other. 3. REMOVAL OF ANODE CAP Read the following NOTED items before starting work. NOTE * After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage. * Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged.
KEY TO ABBREVIATIONS A A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASS'Y AT AUTO A/V B BGP BOT BPF BRAKE SOL BUFF B/W C C CASE CAP CARR CH CLK CLOCK (SY-SE) COMB CONV CPM CTL CYL CYL-M CYL SENS D DATA (SY-CE) dB DC DD Unit DEMOD DET DEV E E EF EMPH ENC ENV EOT EQ EXT F F FBC FE FF FG FL SW FM FSC FWD G GEN GND H H.P.F : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : H.SW Hz I IC IF IND INV K KIL L L LED LIMIT AMP LM, LDM LP L.
KEY TO ABBREVIATIONS S SYNC SYNC SEP T TR TRAC TRICK PB TP U UNREG V V VCO VIF VP V.PB VR V.
PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Unless maintenance is properly carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. Time Parts Name Audio Control Head 500 hours 1,000 hours 1,500 hours 2,000 hours 3,000 hours Notes Clean those parts in contact with the tape.
NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE • Initial Data setting will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 30 minutes before Power On or alternatively, discharge backup capacitor. • No need the setting for after INI 6.
DECK PARTS LOCATIONS (TOP VIEW) 9 8 10 7 6 5 11 4 3 2 12 1 21 20 19 13 18 15 17 16 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Main Chassis Tension Arm Ass'y EOT Reflector Guide Roller S Ass'y P0 Post P1 Post FE Head Cylinder Unit Auto Head Cleaning Head Amp PCB Audio/Control Head C4-1 12. 13. 14. 15. 16. 17. 18. 19. 20. 21.
DECK PARTS LOCATIONS (BOTTOM VIEW) 26 27 25 24 23 28 22 32 33 31 29 30 22. 23. 24. 25. 26. 27. Worm Bracket F Ass'y Mode Switch Worm Ass'y Worm Bracket R Ass'y Loading Motor Belt Capstan DD Unit 28 Capstan Brake Ass'y 29. Bottom Plate 30. Clutch Gear S Ass'y 31. Idler Arm Ass'y 32. Center Pulley 33. Clutch Gear T Ass'y (FRONT LOADING UNIT 9) 1. Side Bracket L 2. Top Bracket Ass'y 3. Side Bracket R Ass'y 4. Cam Gear Ass'y 5. Bot Sensor Cover 6. Side Bracket R2 7. Tape Piece Guide 8.
SERVICING FIXTURES AND TOOLS VHS Alignment Tape JG001C (TTV-P2 or CH-2) JG001D (TTV-P1 or CH-2) JG002B Adapter JG002F Dial Torque Gauge (60~600gf•cm) JG002G (100~1200gf•cm) JG005 Post Adjustment Screwdriver Part No. SV-TG0-030-000 (small) JG153 X Value Adjustment Screwdriver JG022 Master Plane JG024 Reel Disk Height Adjustment Jig JG100A Torque Tape (VHT-063) JG154 Cable Part No. SJ-G15-400-000 JG162A Cable (8 Pins) Part No. SJ-G16-2A0-000 JG162H Cable (15 Pins) Part No.
PREPARATION FOR SERVICING How to use the Servicing Fixture 1. Unplug the connector CP301, CP353, CP810, CP820, CP850 and CP005, then remove the VCR Block from the set. 2. Connect as shown in the below figure using the Service Fixture. • Connect the Syscon PCB to the Main PCB with the cable JG162A and JG162H. • Connect the Syscon PCB to the CRT PCB with the cable JG162Y. 3. Short circuit between TP1001 and Ground with the cable JG154.
MECHANICAL ADJUSTMENTS 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION 1. CONFIRMATION AND ADJUSTMENT Read the following NOTED items before starting work. 1. Turn on the power and set to the PLAY mode adjust the Tension so that the Tension Post is at the position of 0.3mm~0.5mm from the Rib. (Refer to Fig. 1-2) 2. Confirm that the video tape is not curling at the flange of P1 post or is not running on flanges.
MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF FAST FORWARD TORQUE NOTE If the torque value checked is out of tolerance, replace the appropriate parts as follows. 1. Set torque gauge (JG002G) on take-up reel disk, and place unit in FAST FORWARD mode. (Refer to Fig. 1-4) 2. Confirm that torque is more than 400gf•cm. Check Items NOTE After setting the torque gauge on the reel disk, hold the gauge in place. Push the FAST FORWARD button and the reel disk will begin to turn.
MECHANICAL ADJUSTMENTS Beginning Ending Audio/Control Head Maximum A Maximum B A:B=3:2 Fig. 2-1-B 0.25mm 2-2: CONFIRMATION AND ADJUSTMENT OF A/C HEAD TILT Video Tape Video Tape When the tape is running abnormally, perform the following adjustments. 1. Insert a new tape and play it back. 2. Confirm that there is no crease on the tape between the P4 post and guide roller (R) and the tape is running smoothly.
MAJOR COMPONENTS LOCATION GUIDE (VCR SECTION) TP1001 IC4001 IC601 CP4001 TP4001 TP4002 CP1002 IC103 TU6001 CP6115 TP4501 SYSCON CP6001 VR6001 L6011 IC6001 L6012 IF D2-1
ELECTRICAL ADJUSTMENTS 3-2: VCO COIL (VCR SECTION) 3. ADJUSTMENT PROCEDURE NOTE For adjusting of VCO, connect input and output terminals of sweepmarker generator to the circuit as shown below, then adjust it. Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies. CAUTION Sweepmarker Generator When replacing IC's or transistors, use a silicon grease. (To prevent the damage to IC's and transistors.) Output 0.
ELECTRICAL ADJUSTMENTS 39.5MHz Fig. 3-3 3-4: COLOR LEVEL CONDITIONS MODE-STOP INSTRUCTIONS 1. Connect the oscilloscope to TP4501. 2. When the Y-LEVEL is 100%, adjust the VR6001 until the MAGENTA Section LEVEL becomes 45 ± 5%. (Refer to Fig. 3-4) 45% 100% Fig.
MAJOR COMPONENTS LOCATION GUIDE (TV SECTION) TP401 T501 VR502 FB401 SCREEN VOLUME FOCUS VOLUME MAIN J801 TP801 TP803 CRT D3-1
ELECTRICAL ADJUSTMENTS (TV SECTION) 4. BASIC ADJUSTMENTS ADJUSTMENT MODE4 1. R-Y B OFFSET 2. B-Y B OFFSET 3. 4. 5. 6. On-Screen Display Adjustment Unplug the AC plug for more than 30 minutes to set the clock to the non-setting state. (To release the Back-Up immediately, take the short circuit between C101 and GND at the Power Off.) Then, set the volume level to minimum. Press the VOL.
ELECTRICAL ADJUSTMENTS 4-4: HORIZONTAL PHASE (TV) 4-10: OSD HORIZONTAL 1. Receive the color bar pattern (RF Input). 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 4-1 and press the channel button (1) on the remote control. 4. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 1.
ELECTRICAL ADJUSTMENTS 4-15: SUB COLOR (TV) 4-18: CONSTANT VOLTAGE 1. Receive the color bar pattern (RF Input). 2. Connect the oscilloscope to TP801. 3. Activate the adjustment mode display of Fig. 4-3 and press the channel button (3) on the remote control. 4. Adjust the VOLTS RANGE VARIABLE knob of the oscilloscope until the range between white 100% and 0% is set to 4 scales on the screen of the oscilloscope. 5. Press the VOL.
ELECTRICAL ADJUSTMENTS 5-3: STATIC CONVERGENCE 5. PURITY AND CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 5-2. NOTE 1. Receive the crosshatch pattern from the color bar generator. 2. Combine red and blue of the 3 color crosshatch pattern on the center of the screen by adjusting the pair of 4 pole magnets. 3. Combine red/blue (magenta) and green by adjusting the pair of 6 pole magnets. 1.
TROUBLESHOOTING GUIDE (TV SECTION) POWER DOES NOT TURN ON (1) When turning on the Power Switch, does the LED light ? No Check P.CON 5V line. Yes Is the voltage at pin 1 of IC502 DC7.7V ? No Check IC502, D511 and D512. Yes Is the voltage at pin 3 of IC502 DC5.6V ? No Check IC502. Yes Does RY501 work ? No Does the BASE voltage of Q501 turn ON or OFF ? Yes Yes Check IC506, Q507 and the peripheral circuit. Check Q504, RY501 and the peripheral circuit.
TROUBLESHOOTING GUIDE POWER DOES NOT TURN ON (2) Is CP810 inserted ? No Insert CD810. Yes Is F501 broken ? Yes No Is the voltage at C507 about 160V ? Check the circuit between F501, C507 and R501. Yes Q500 bad ? Yes Replace F501. No Replace Q500. E-2 No Check IC501 and the peripheral circuit.
TROUBLESHOOTING GUIDE GOOD PICTURE BUT NO SOUND Is the voltage at CP301 changed with the volume up or down key ? No Check speaker and EARPHONE PCB. Yes Is the voltage at BASE of Q351 and Q352 DC9V ? No Is FUSE RESISTOR (R517) broken ? No Check Sound +B line. Yes Yes Replace FUSE RESISTOR (R517). Is the voltage at pin 1 corrector of Q351 DC9.2V ? No Check Q351 and Q352. Yes Is the voltage at pin 29 of IC601 changed from DC10.8V to DC9.
TROUBLESHOOTING GUIDE NO PICTURE Are the Brightness and Contrast set to minimum ? No Adjust Brightness and Contrast. Yes Is the voltage at pin 3 of IC601 DC9V ? No Check P.CON 9.6V line. Yes Is the voltage at pin 17 of IC601 DC9V ? No Check CHROMA 9V line. Yes Is the voltage at pin 41 of IC601 DC5V ? No Check D607. Yes Is the voltage at pin 8, 38 of IC601 DC5V ? No Check D604.
TROUBLESHOOTING GUIDE NO COLOR Is the color set to minimum ? No Adjust the color. Yes Is the color signal received ? No Receive the color signal. Yes Is the waveform at pin 40 of IC601 normal ? No Check peripheral circuit of X601. Yes Is the waveform at pin 42 of IC601 normal ? No Check peripheral circuit of VIDEO out line and Q602. Yes Is the waveform 12, 13 and 14 of IC601 normal ? No Check IC601. Yes Is the waveform at TP801, TP802 and TP803 of CRT PCB output.
TROUBLESHOOTING GUIDE ONLY A LINE APPEARS Is the normal signal at pin 4 of IC 401 input ? No Check peripheral circuit of IC601. Yes Is the normal signal at pin 38 of IC101 output ? No Check peripheral circuit of IC101. Yes Is the voltage at pin 6 of IC402 DC25V ? No Check R452 and FB401. Yes Check peripheral circuit of IC402 and DY401. OSD SCREEN DOES NOT APPEAR Is there a waveform at pins 33, 34 and 35 of IC101 ? No Check pin 36 of IC101 and the peripheral circuit.
TROUBLESHOOTING GUIDE (VCR SECTION) PLAY SHUTS OFF Insert a cassette and push PLAY button. Does it Power off in about 3 seconds? Yes Check TAPE LOADIG, LOADING BELT,MODE SWITCH, DD MOTOR and CYLINDER MOTOR. No Does it Power off in about 6 seconds? Yes Check REEL SENSOR and REEL BELT. Yes Check REEL SENSOR,IC1001 and REEL BELT slack. No Does it Power off intermittently No Check IC1001.
TROUBLESHOOTING GUIDE CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING Is the voltage at pin 6 of CP1002 about DC13V ? No Check UNREG 12V line of Main PCB. Yes In playback, is the voltage at pin 3 of CP1002 about DC1.2V ? Yes Replace CYLINDER MOTOR. No In playback, is the voltage at pin 44 of IC1001 DC5V Pulse and is the voltage at pin 46 of IC1001 about DC1.5V ? No Check R1059, R1080 and R1058. Yes Replace IC1001.
TROUBLESHOOTING GUIDE AUDIO SHAKES Is AUDIO HEAD scratched ? Yes Replace AUDIO HEAD. No Does pin 15 of IC1001 output a 3.0Vp-p square wave ? 3.0V No Replace CAPSTAN DD. Yes In playback, is the voltage at pin 14 of CP1002 2.8V ? Is the voltage at pin 14 of CP1002 3.3V when you stop the CAPSTAN DD MOTOR manually ? No Check peripheral components of IC1001. Yes In playback, is the voltage at pin 17 of CP1002 about DC1.6V ? Yes No In playback, is the voltage at pin 50 of IC1001 3.
TROUBLESHOOTING GUIDE CASSETTE TAPE IS NOT ACCEPTED Does WORM GEAR of FRONT LOADING UNIT activate ? No Check WORM GEAR of FRONT LOADING UNIT. No Check EOT, BOT, PHOTO SENSOR, pins 2 and 4 of IC1001. Yes When cassette is not inserted, is EOT BOT PULSE at EMMITTER of Q1055, Q1056 5V ? Yes When a cassette is inserted, is the voltage between pins 1 and 2 of CP1002 ? Yes Replace LOADING MOTOR.
TROUBLESHOOTING GUIDE WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY In another cassette tape does the same problem appear ? No Defective CASSETTE or FRONT LOADING UNIT. No Replace EOT/BOT PHOTO TRANSISTORS. Yes In covering the infrared sensor, is pin 2 and 3 of IC1001 5V ? Yes When inserting cassette, is pin 4 of IC1001 low ? No Check R1010. Yes Is EJECT position of FRONT LOADING GEAR OK ? No Check FRONT LOADING GEARS. Yes Check IC1001 circuit.
TROUBLESHOOTING GUIDE FF/REW DO NOT WORK When the FF/REW is pushed, does the PULSE appear at pin 51 of IC1001 ? No Check pin 74 of IC1001 lines change IC1001. No Check pin 12 of CP1002 and peripheal circuit. No Check pin 45 of IC1001 lines change IC1001. Yes Is the voltage changing at pin 12 of CP1002 when you press FF/REW ? Yes Is the voltage changing at pin 14 of CP1002 ? Yes Check DECK MECHANISM.
TROUBLESHOOTING GUIDE TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY Does CYLINDER rotate ? No Yes Is the voltage at pin 6 of CP1002 UNREG 12V ? No Check Power circuit. Yes In playback, is the voltage at pin 3 of CP1002 1.2V ? No Does DC5V PULSE signal appear at pin 44 of IC1001 ? Is the voltage at pin 46 of IC1001 DC2.5V ? Yes Yes Replace CYLINDER UNIT.
TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS HORIZONTALLY No Is FG output level at pin 5 of CP1002 about 5V? 5V Replace CYLINDER MOTOR. Yes Is the voltage at pin 3 of CP1002 1.2V? No Replace IC1001. Yes Replace CYLINDER MOTOR. PLAYBACK PICTURE SHAKES PLAYBACKPICTURE SHAKES No Is FG Pulse output level at pin 5 of CP1002 about 5V? 5V Replace CYLINDER MOTOR. Yes Does pin 11 of IC1001 output a 4.4Vp-p square wave? No Replace IC1001.
TROUBLESHOOTING GUIDE AUTO TRACKING DOES NOT OPERATE By manual tracking, does the DC level at pin 6 of CP4001 change? No Check IC4101 and CYLINDER UNIT. Yes In auto tracking, is the voltage at pin 5 of IC1001 more than DC1.85V? No Does the CTL PULSE (about 1.0Vp-p) appear at pin 19 of IC1001? 1.0Vp-p Yes Yes Replace IC1001. E-15 No Check CONTROL HEAD.
TROUBLESHOOTING GUIDE WHEN PLAYBACK,FAST FORWARD OR REWIND MODE IS ACTIVATED, UNIT STOPS IMMEDIATELY Does CAPSTAN DD MOTOR rotate? No Refer to section "CAPSTAN DD MOTOR NOT ROTATING" Yes Is CAPSTAN BELT OK? No Replace CAPSTAN BELT Yes Does REEL SENSOR PULSE signal appear at pin 69 of IC1001? Check REEL SENSOR and that the voltage at pin 10 of CX1003 is DC5V. No Yes Does REEL SENSOR PULSE signal appear at pin 70 of IC1001? No Check around pin 4 of IC1001. Yes Replace IC1001.
TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS VERTICALLY No Does tracking noise appear in the picture? Yes By adjusting the manual tracking UP/DOWN buttons,will the noise disappear in the picture? No Check P/B ENVELOPE. Yes Are GUIDE POSTS the right height? No Adjust GUIDE POST height. Yes Is PG SHIFTER Adjustment 6.5H? No Adjust PG SHIFTER. Yes Check PB-Y circuit.
TROUBLESHOOTING GUIDE NO PLAYBACK PICTURE Is E-E appearing on the Monitor TV? No Yes Is the voltage at pins 12,28 and 54 of IC4001 5V? No Check Power circuit. Yes Check 5V line. Is there PB Y/C signal at TP4002? No Check IC4101 and the connection of the CYLINDER. No Check Q4001,Q4016,Q4004 and the peripheral circuit.
TROUBLESHOOTING GUIDE NO COLOR DURING PLAYBACK Does FM ENVELOPE appear at TP4002? No Check IC4101 and HEAD AMP BLOCK. No Check C4067 and the peripheral circuit. Yes Does CHROMA signal appear at pin 27 of IC4001? Yes Does COMPOSITE signal appear at pin 16 of IC4002? No Replace IC4002 Yes Does COLOR BURST signal appear in the COMPOSITE signal at pin 2 of IC4001? No Replace IC4001. Yes Check TV Block.
TROUBLESHOOTING GUIDE PLAYBACK PICTURE NOISY (EVEN AFTER CLEANING HEADS) Is FM signal at TP4002 more than 200mVp-p? No Replace CYLINDER MOTOR. Yes Is there FM signal at pin 11 of IC4001 140mVp-p? No Check Q4001,Q4016,Q4004 and the peripheral circuit. No Check pins 6 and 8 of IC4002 and the peripheral circuit.
TROUBLESHOOTING GUIDE NO COLOR DURING SELF RECORDING AND PLAYBACK Does VCR signal appear at pin 53 of IC4002 ? No Replace J4501. Check VIDEO input circuit. Yes Does CHROMA signal appear at pin 29 of IC4001 ? No Replace IC4001 Yes Does FM signal appear at pin 8 of CP4001 ? No Check Q4005, Q4006 and peripheral circuit. Yes Does FM signal appear at pin 8 of IC4101 ? No Check IC4101 and peripheral circuit. Yes Replace IC4101.
TROUBLESHOOTING GUIDE NO NORMAL AUDIO ON PLAYBACK Does audio appear on E-E ? No Refer to section "NO E-E". Yes Is the voltage at pin 17 of IC5001 High ? No If the pin 52 of IC1001 is not High, replace the IC1001. No Check R5013, R5014 and peripheral circuit. Yes Does AUDIO signal appear at pin 7 of IC5001 ? Yes Check AUDIO HEAD for debris of stains. Check that the connector from AUDIO HEAD is fully inserted to CP4106. Replace IC 5001.
TROUBLESHOOTING GUIDE CAPSTAN DD MOTOR NOT ROTATION In playback, is the voltage at pin 13 of CP1002 13V ? No Check POWER circuit. Yes Is the voltage at pin 15 of CP1002 5V ? No Yes In playback, check the voltage at pin 17 of CP1002 is 2V or at pin 50 of IC1001 is 0V ? No Replace IC1001. Yes In playback, is the voltage at pin 14 of CP1002 2.5V ? No Check pins between 45 and 47 of IC1001 and peripheral circuit. Yes Replace IC1001. Does DD MOTOR rotate now ? If not, replace DD MOTOR.
TROUBLESHOOTING GUIDE AUDIO CAN NOT BE RECORDED Is BIAS level O.K at T5001 ? 60V No Is the voltage at pin 20 of IC5001 9.2V ? No Check POWER circuit. Yes Yes T5001 is broken or shorted. Check T5001 and peripheral circuit. Is there AUDIO signal at pin 10 or 12 of IC5001 ? No Check the circuit between audio out of Tuner and pin 10 of IC5001. No Check IC5001 and peripheral circuit. Yes Is there AUDIO signal at pin 14 of IC5001 ? Yes Is there signal at pin 22 of IC5001 ? No Replace IC5001.
TROUBLESHOOTING GUIDE CASSETTE IN AND DOWN, UNIT HAS NO FUNCTIONS Does mode indicator appear in Display ? Yes Check LOADING MOTOR, MODE SWITCH and the peripheral parts. No Does VCR operate with the remote control ? No Check IC1001. Yes Check Operation PCB.
TROUBLESHOOTING GUIDE RECORDING MECHANISM WORKS, BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER Does VIDEO signal appear at pin 51 or 53 of IC4001 ? Check the circuit from VIDEO input jack to IC4001, from Tuner Pack to IC4001. No Yes Is there VIDEO signal at pin 6 of IC4002 and Does VIDEO signal appear at pin 8 of IC4001 ? No Check the peripheral circuit of Q4007, Q4009. Yes Does FM signal appear at pin 8 to CP4001 ? No Replace IC4001.
TROUBLESHOOTING GUIDE NO E-E (NO VIDEO AND AUDIO FROM TUNER) Is the voltage at pin 6 of TU6001 9V ? No Check Power PCB. Yes Is defect present when replacing the IF PCB ? No Is defect present when replacing the TU6001. No Check TU6001 and the peripheral circuit. Yes Yes Replace TU6001. Is the voltage at pin 13 of IC6001 5V and the voltage at pin 18 of IC6001 9V ? No Check 9V and 5V line. Yes Is there VIDEO signal at pin 20 of IC6001? No Replace IC6001 and check peripheral circuits.
IC DESCRIPTIONS OEC6044D Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Pin Name VSS PAL/SEC HALF TONE — I2C OFF H. SW — DEGAUSS TEXT RESET — TV MUTE VT VOLUME P. B. LED — — TRICK PB AGC V. POSI/V. SIZE AV2 AV1 AGC DET COL SYS IN DV-SYNC AFT KEY A KEY B VL VH FORTHED VH — VSS RED GREEN BLUE Y HD VD SCL SDA B.
IC DESCRIPTIONS OEC6044D Pin No. 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Pin Name REMOCON SD TU MUTE VCR MUTE SST STS SCLK STRB SIF AUDIO A AUDIO B TV POWER VCR POWER VDD I/O I I O O I O O O O O O O O — Description Remocon pulse input. SD signal input. Tuner mute output. VCR mute output. Serial data input. Serial data output. Serial clock output. Strob output. SIF selection. Switching output of HI-FI/STEREO. (Open) Switching output of HI-FI/STEREO. (Open) TV power output. VCR power output. +5V.
IC DESCRIPTIONS OEC9032B Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Pin Name I/O Description VSAD — Ground. BOT I Tape start sensor input signal. CASS DOWN/SERVICE I Input of CASS DOWN, TAB switch and setting of service mode. EOT I Tape end sensor input signal. VIDEO ENV DET I Input terminal of video RF envelope. HI-FI ENV DET I Input terminal of HI-FI RF envelope. DEW I Dew sensor input.
IC DESCRIPTIONS OEC9032B Pin No. Pin Name I/O 51 CAP F/R O 52 VV-H O 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 EXT IN-L EXT H MS SW3 MS SW2 MS SW1 MS SW0 TAPE IN LED REC LED T-REC LED CLOCK 0 CLOCK 1 VSS ATR LED PLAY LED REPEAT LED SYSTEM 2 REEL S REEL T SENS LED CE COUNTP IN S. DATA IN S. DATA OUT S.
IC DESCRIPTIONS TB1229CN Pin No. 1 2 3 4 5 Pin Name AV VIDEO IN V-AGC H VCC H.
SERVO TIMING CHART IC1001 (OEC9032B) DRUM PG !3 PIN 30 Hz DRUM FG !1 PIN 720 Hz 30 Hz VIDEO H. SW #8 PIN 6.5 H V-SYNC $2 PIN 6.
SYSTEM SWITCH MODE SWITCH PATTERN SWITCH COMPOSITION SW (0) SW (1) SW (2) SW (3) SIGNAL CONDITIONS OF SWITCHES SW 0 SW 1 SW 2 SW 3 SW 3 1 1 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 1 1 1 1 1 0 0 0 0 MODE SWITCH SW 2 SW 1 0 0 1 1 0 0 0 1 1 1 0 1 1 0 0 0 0 0 1 1 1 1 0 0 0 0 SW 0 1 0 0 1 0 1 0 0 1 1 1 1 0 0 0 1 0 1 1 0 0 1 1 1 0 1 1 0 1 0 0 1 0 0 0 1 MODE SWITCH DECK MODE SW 3 SW 2 SW 1 SW 0 EJECT CASSETTE UP CASSETTE DOWN IDLE *1 UL START VSR RVS STILL FW
SEMICONDUCTOR BASE CONNECTIONS DIODE IC CATHODE CATHODE ANODE ANODE 1SS133T-77 1SS290T-77 MTZJ13B T-77 MTZJ5.1C T-77 MTZJ6.8C T-77 MTZJ8.2B T-77 UZ-12BCB-TA UZ-27BCB-TA UZ-5.1BCB-TA UZ-5.6BCA-TA UZ-5.6BCB-TA UZ-9.
TV BLOCK DIAGRAM VIDEO CHROMA DEFLECTION IC601 TB1229CN TIMER MICON IC101 OEC6044D 51 OSD R 33 18 52 SD OSD G 34 19 12 VT OSD B 35 Q6503,Q6502,Q6504 BUFFER TU. VIDEO (B) TUNER/AUDIO/IF PWM VT 25 AFT S.CURVE Y/C/HEAD AMP DV_SYNC B.B HI 41 21 AV-H 14 P.B.LED KEY-A 26 KEY A KEY-B 27 KEY B REMOTE 51 REMOTE 63 VCR POWER Q111 SW. VCR POWER-H 62 Q102 SW. 48 33 TV/NEXT SHARPNESS 37 Q602 2ND CHROMA 12 X102 8MHz 13 X. OUT 46 40 32KHz OSC 49 X101 32.
Y/C/HEAD AMP BLOCK DIAGRAM Q4007 BUFFER CP4106 1 AUDIO PB 2 6 AUDIO REC AE HEAD (+) Q4009 Q4012 SW AMP Q4015 BUFFER Q4004 CP4103 3 CYL DRIVE SYSCON/OPE./ POWER/IN/OUT 5 CYL FG 7 CYL PG 16 FG 18 V.
SYSTEM CONTROL/OPERATION/POWER/IN/OUT BLOCK DIAGRAM SYSCON/SERVO IC1001 OEC9032B SW1010 3 TAB SW CAS. DOWN/SERVICE VIDEO H. SW 38 H. SW Q1002 Q1053 SUPPLY REEL SENS. NTSC SW 69 REEL S VIDEO ENV. DET Q1054 TAKE UP REEL SENS. 70 REEL T ENV. DET 5 Q1010 TRICK PB 5V DRIVER TRICK PB L 33 Y/C/HEAD AMP TRICK PB H Q1055 Q1018 P. CON 5V SW Q1017 EOT SENSOR V. REF CTL 4 EOT 2 BOT NTSC-H 68 NTSC-H Q1051 Q1056 BOT SENSOR CP1002 3 CYL DRIVE 5 CYL FG 7 CYL PG Y/C/HEAD AMP 16 FG 18 V.
TUNER/AUDIO/IF BLOCK DIAGRAM IC6302 LA6358T VT DRIVER 7 8 6 5 +30V IC6303 UPC574J TU6001 11 2 2 PWM VT 3 VCR AUDIO OUT Q6304 VOLTAGE CONVERTER AV SW AUDIO IN AUDIO REC AV SW VIDEO IN VCR AUDIO OUT AUDIO REC/PB AMP IC5001 LA7289 14 SYSCON/OPE./ POWER/IN/OUT 22 23 15 REC AUDIO PB + REC TV TU MUTE - - Q6101 T. AUDIO MUTE + TEST POINT PF5001 CP6115 4 IF Q6003 ADI AUTO BIAS AC MUTE AMP Q6104 AFT S. CURVE ALC BUFFER 4 5 1 CF6004 SAW FILTER TU.
PRINTED CIRCUIT BOARDS OPERATION 1 SW793 C4103 SW794 CY758 R776 SW795 R777 W001 W017 Q757 W804 SW799 Q758 SW798 R793 SW797 W020 SW796 R754 IF Q756 W018 D793 JP6005 J-1 R6014 R6015 C6016 JP6012 JP6011 JP6013 JP6017 R6016 Q6002 R6018 C6009 R6009 C6015_1 R6011 C6014 R6010 JP6003 R6012 C755 R6008 C6006 C6004 R766 C781 SW751 C6007 C6028 C6010 D795 W005 C6001 JP6014 C6008 JP6006 C6017 R6001 JP6008 C6027 C6020 OS753 C6030-1 C6032-1 R6013 W004 R758 SW750 JP
C6005-1 CF6004 J-2 Q6003 1 CF6008 R6004 R6007 C6019-3 R6006 JP6004 JP6003 JP6002 IC6001 CP6001 L6004 L6005 R6005 CF6005 L6012 L6010 VR6001 L6011 C6021 JP6001 R6020 L6002 C6002 CF6003 JP6007 CF6001 L6009 JP6009 JP6001 L6007 IF CP4105 CP4103 CP4104 W02 W05 W14 CP4101_2 W03 W04 L4101 C4107 W08 VE6773A W01 CP4102_1 CP4106 W13 CD4102 HEAD AMP PRINTED CIRCUIT BOARDS
C781 R6011 C6009 C6016 C6006 C6004 JP6012 C6028 C6023-1 R6014 R6015 JP6001 R6020 JP6009 C6021 C6032-1 CF6003 D793 JP6005 JP6015 SW798 R793 W020 SW797 SW796 SW795 SW794 SW793 C4103 JP6006 C6017 R6018 JP6011 JP6013 JP6017 L6002 C6002 D794 R761 W006 W803 SW799 R759 CY759 R4102 W002 SW792 W001 R754 W017 Q756 IF W018 D791 C6008 C4115 C4119 C4112 C4113 W08 C4107 R4113 C4127 R4109 C4108 C4106 C4105 12 IC4101_2 C4110 13 R4111 24 C4120 C4114 W01 CD4102 W801 C
A B C D E F G H OPERATION 1 SCHEMATIC DIARGAM 8 8 (OPERATION 1 PCB) 7 7 OS753 GP1U281R 3 GND FROM OPERATION 2 B+ 1 Vout 6 ATR LED 7 T-REC LED 8 REC LED PLAY BACK LED SW Q758 DTC114TS C751 100P B 0 W804 1 PLAY BACK D795 270 R754 270 R793 0 W801 POWER LED SW Q756 DTC114TS 1.0 4 5.0 POWER SW Q757 DTC114TS R758 2 C755 3 6.3V 220 KA NC NC NC CY759 ILG3P-S3L-PCB-S 270 R761 5.1 FROM/TO OPERATION POWER D792 0 100 3.
A B C D E F G H 2 1 3 CH2(L)F 8 CP4101_2 52492-0420 4 CH1/2 S FROM/TO CYL CH1(R)F HEAD AMP SCHEMATIC DIAGRAM 8 (HEAD AMP PCB) 15P CH C4104 NC 7 7 C4110 0.01 B R4111 20K C4119 33P CH 0.001 B 0.001 B C4112 C4113 0.001 B C4115 33P CH 0.001 B C4114 C4120 44 6 6 46 45 0 0.7 2.1 4.99 NC 18 17 16 15 5 6 0.45 0 7 2.2 8 9 1.1 5K AGC DET 0 10 2.9 H.SYNC 11 5.0 12 LA7411M HEAD AMP AGC 5 5.0 39 L4101 43 40 R4109 42 100uH 0.
A B C D E F G H IF SCHEMATIC DIAGRAM 8 8 L6005 AMP Q6003 2SC3000 C6016 0.01 B 7 56 R6011 4.7K R6010 75 0.2 CP6001 6035B-12Z002-T 1.2uH 560 6.8K 0.9 0.0022 B R6012 MKT41.5MA110P CF6008 FROM/TO TUNER/AUDIO 2.6 C6014 JP6003 7 R6009 R6008 C6015_1 0.001 CH 150 R6007 (IF PCB) 1 P.CON 9V (AT9V) JP6012 NC R6004-1 1.5K 3 3.6 RF AGC 1.3 4 5 IF AGC 1.3 0 6 IF AMP VIDEO AMP VIDEO DET. VCC2 2.6 20 2.6 19 8.9 18 2.5 4.4 16 12uH L6004 2.2K 680 2.
C6101 R6109 Q6304 C6319 R6312 W178 C1022 R6103 C6123 J-7 C113 C1012 C130 C111 Q6503 R171 W435 W264 R141 R155 Q105 R4069 R183 R118 C178 R1094 W831 R1030 R1052 R1058 Q106 W892 Q6502 W956 W375 W291 C1008 R126 C116 R6508 R1002 C1002 C1003 W857 R1057 R131 R157 W440 Q4018 W859 W423 R1011 R1077 W470 R1046 R1095 Q1010 W969 W374 W832 IC 10 01 W962 R1093 R1092 R1005 R4065 R1081 25 R1059 R1066 W376 W278 W894 R1016 C1051 C1053_1 W938 Q1051 R1007 R4064 R1045 Q4010
W273 W272 W271 C127 IC1002 C6116 W101 W361 W269 D6007 L101 D1005 D120 CP6115 IC6303 W014 W013 W012 W175 W170 W173 D119 W825 C1011 C6316 C6315 C6110 W091 C6119 W011 C6149_1 W009 W261 W260 C112 CP1001 R159 C118 W168 W167 W165 CY759 PF5001 D121 C357 C5023 W370 W369 W368 W371 W367 W372 W373 W296 W120 W292 W286 W422 W275 W277 W276 CY758_1 C1009 W282 W274 W281 W388 R4041 W320 J4501 W318 W317 W223 W314 Q1052 W315 W311 D1001 D1009 W214 W225 W121
W270 W273 W272 W271 W013 W012 W886 R6116 W844 CP6001_2 L6102 W099 W930 R6110 R6310 C1036 D1005 R117 R116 C115 R126 R132 C104 R124 R131 W955 W880 R1006 W168 W167 W263 W112 W111 W197 W196 W165 W261 C357 R136 W376 W375 W374 CY759 R1094 W377 W378 W379 W380 R1093 R1092 CP1001 R1095 W381 D131 R189 W912 R5005 D121 W812 C6510 C6512 C6511 R163 R6504 R6514 R6515 W067 R172 C5023 W947 R358 T5001 C5020 R5022 R5003 W370 W369 W368 W371 R1078 W367 W372 W373 W296
G 15K A B D E J-10 2.7 R4052 1K L4012 39uH 100P CH DV_SYNC 220P CH 220 R4059 C4067 C4064 0.0027 B C4061 33K 2.5 29 2.3 VCC2 28 5.0 0.12 B C4069 6.3V 47 KS 0.1 F C4065 F C4068 4 REC-C_OUT 5.0 4 0 15 2.5 14 0 7 2.2 3.2 2.5 BUFFER Q4013 2SC2412K 0.0047 B 0.01 B C4059 820 2 S/N 1/3 PAL/4.43NT /SECAM RECORD LUMINANCE SIGNAL PLAYBACK LUMINANCE SIGNAL RECORD COLOR SIGNAL PLAYBACK COLOR SIGNAL TUNER VIDEO SIGNAL S/N 12 11 10 13 9 10.6 2.4 1.9 3.3 NC 1 1.2K 0.
A B C D E F G SYSTEM CONTROL SCHEMATIC DIAGRAM FROM/TO HEAD AMP CP1002(CP4103) TMC-W20P-A1 (SYSCON PCB) 1K CTL OUT 43 VDD 4 EOT 44 PWM 0 5 VIDEO ENV DET 45 PWM 1 6 HI-FI ENV DET 46 DRM ON 7 DEW 47 CAP ON 8 SLOW TRACK OFF SET 48 LDM REV 9 CYLICAP MOTOR SELECT 49 LDM FWD 10 VDAD 50 CAP LIMIT 11 DFG OUT 51 CAP F/R IC1001 F R1052 C1009 6.3V 100 KS 0.1 B CYL_DRIVE R1081 C1008 R1007 20K R1080 27K W894 R1059 5.
A B C D E F G H TUNER/AUDIO SCHEMATIC DIAGRAM 1 GND 2 AGC 3 AFT S.CURVE 4 IF 12 9 11 8 AGC IF 7 AGC CTL 10 6 4 P.CON+5V 3 AFT S.CURVE 5 2 TU.VIDEO TU.AUDIO 1 FROM/TO IF (SYSCON PCB) FROM/TO SYSCON AUDIO_PB R6115 NC W886 NC AUDIO_REC NC NA_PB/LINE/TU 100K R6109 MTZJ5.1C 50V 0.47 KA C6116 10K R6110 D6007 5.6K R6103 C6149_1 C5012_1 16V 10 KS MTZJ6.8C 23 3.8 R5015 3.8 4 3.8 3 2 0 C5028 4 R5027 0.01 B 0.01 B 9.2 4.7K W873 C5023 C5014 0.
A B C D 9V REG. IC1003 NJM7809FA E F G H POWER/IN/OUT SCHEMATIC DIAGRAM 8 8 (SYSCON PCB) AT +5.6V AT +30V 8 POWER FAIL(DC) AT+5V P.CON+5V P.CON+5V[B] P.CON+9V[B] AT+12V P.CON+9V 9.2 8.4 R1101 AT+5.6V MOTOR_GND MOTOR GND 7 VCR_VIDEO_OUT AT+5V AT+12V P.CON+5V +30V 10K POWER_FAIL TO SYSCON AT+5.6V MOTOR_GND AT+5V 0 0 GND R1099 0.7 S804X MOTOR GND P.ON SW Q1030 2SC2412K 10K TO TUNER/AUDIO P.CON+9V P.CON+5V +30V GND W955 6 5.2 W967 4.5 DRIVER Q1029 2SB926 or T 5.
A B C D E F G H MICON SCHEMATIC DIAGRAM (SYSCON PCB) 8 8 STRB SCLK 8 SST H.BLK CUT A 5.1 7 0 4.5 5 UZ-5.6BCB C106 10K R135 D121 R186 220 1/4W 1F C111 560P B 50V 4.7 KS R187 18K C118 10K LFB-01L D131 R140 D103 B 0.0068 NC NC 2 REMOTE PB_LED KEY-A KEY-B TV_POWER-H PB_LED KEY-B KEY-A C160 FROM/TO OPERATION OSDR OSDG 1SS133 0.001 B C114 100K 1SS133 19 20 22 23 24 25 31 32 VSS OSDR 1K 33 4.7K 30 35 34 1K 0.2 0 W806 C131 4.7K R151 0.
A B C D E F G H CHROMA SCHEMATIC DIAGRAM (SYSCON PCB) 8 8 FROM/TO DEFLECTION CP820(CD820)8283_1512_00_000 R652 4.7K W975 W807 10uH VCR_POWER-H OSDBLK. R635 1.8K LFB-01L D609 LFB-01L D611 STOP SOUND+B 15 SOUND GND 14 CHROMA+9V 13 VCR POWER H 12 TV POWER H 11 GND 10 H.OUT 9 V.PULSE 8 V.OUT 7 ACL 6 AFC 5 STOP 4 V.NF 3 ABCL 2 NC 0 B.OUT B.B-H BUFFER Q612 2SC2412K R.OUT R662 4.7K 4.7K R657 5.0 G.OUT BUFFER Q611 0 DTC114EKA 5.
A B C D E F G H 8 8 SOUND AMP SCHEMATIC DIAGRAM 7 7 (SYSCON PCB) TO EARPHONE CP353(CD353) 8283_0312_00_000 6 SPEAKER SP OUT 1 1 GND 2 2 SP352 AA0308A 8_OHM 5 W855 D351 1SS133 C355 16V 47 KA 8.4 1 GND C356 R351 C353_1 AUDIO_OUT R355 16V 33 KA SOUND OUTPUT Q352 2SA950Y W947 R360 SOUND OUTPUT Q353 2SC1815Y 1 D352 1SS133 180 R358 0.7 0 0 1K 100 16V 33 KA SOUND_GND 8.6 C357 C352_1 8.1 8.6 16V 470 YK 4 0.1 TF FROM CHROMA 0.0012 M C354 8.
A B C D E F G H OPERATION SCHEMATIC DIAGRAM 8 8 7 1 1 KEY B 2 2 KEY A 3 3 GND CY759 ILG3P-S3L-PCB-S 4 PLAY BACK LED CY758_1 ILG4P-S3L-PCB-S FROM/TO OPERATION 1 2 GND REMOCON OUT 1 3 AT 5V 5 4 P.CON +5V 7 6 8 REC LED T-REC LED CY757_1 ILG8P-S3L-PCB-S TO OPERATION 1 (SYSCON PCB) NC NC 7 NC NC NC W928 6 6 FROM SYSCON T-REC_LED D703 W929 D706 W938 1SS133 11E1 REC_LED V.REC_ST-H 5 5 4 4 FROM POWER I/O AT+5.
PRINTED CIRCUIT BOARDS EARPHONE MAIN/CRT/POWER SW C353 W855 W002 CD803 CP803B GND R454 1_ 2 W020 CD503 R447 C409 C412 R403 D401 C422 W023 L401 L402 CP504 C405 R414 R413 R416 C450 T401_1 R448_1 C407 Q404 C416 Q408 R422 W007 W006 TM7379B J-18 W009 W008 W026 D422 W027 W035 W051 W052 R476 C417 R477 R417 R412 C418_2 C482 R415 C440 W833 FH503 R418 R419 C411 Q405_1 R456 F502 TC7243B 80 10 _1 CD8 01 W021 W012 W014 W022 R512 FH504 B508 D531 ICP505 Q
A B C D E F G H DEFLECTION SCHEMATIC DIAGRAM 8 8 (MAIN PCB) FROM POWER PROTECT AT+5.6V V.OUTPUT IC401 TA8403K V-DRIVE V-OUT 7 PUMP UP GND GND VCC 2 14.2 3 23.5 4 0.9 5 6 1.1 22.8 500V390P B D401 1 0 7 7 4.9 W870 4.8 0 0 SWITCH Q403 DTC114ES C485_1 C482 560 10V 100 YK R477 560 D405 R476 D422 1SS133 1SS133 0.18 TF C411 680 1/2W 680 1/2W R419 11E1 R417 C407 25V1000 YK 4.8 SWITCH Q407 0 DTC114TS W824 R422 250V 22 C423_2 1.6KV0.0068 DKR C422 200V0.
A B C D E F G H POWER SCHEMATIC DIAGRAM 8 8 (MAIN PCB) FROM/TO DEFLECTION +100V 0 W873 RELAY DRIVE Q504 2SC2001_L PROTECT Q505 2SA1624 0 99.5 7 CAUTION: DIGITAL TRANSISTOR R525 22K C516 RY501 SDT-SS- 1 109DM C505 250V0.22 MMCA W847 L501_1 RB-20871 1.5M 1/2W R538 C506 C533 D535 1 1 2 S101 S102 1 1 BROWN BLUE CD501_1 1206635807 6.6 0 CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY TV.POWER_H W828 5.
A B C D E F G H CRT SCHEMATIC DIAGRAM (CRT PCB) 8 8 FROM CHROMA CD850(CP5850) CH25080A GND 4 P.CON +9V 3 G 2 R 1 B W863 6 132.9 7 104.1 8 4 132.8 L850 (1 TURN) HF57T18.5*10*10 7 0 0 5 6.0 3 132.5 9 TP801 W862 5 RED AMP Q804_1 2SC3468 2.8 36 1 R802_1 132.5 0 7 F J801_1 HPS3200-010501 12K 2W 2.5 R807_1 W805 2.7K 1/4W R806 W813 R811 6 390P B 330 C809 0 R814_1 0.8 1SS133 CUT OFF Q801 2SA1015Y 1K 390 R804 1SS133 1.
A B C D E F G H EARPHONE SCHEMATIC DIAGRAM 8 7 8 7 W841 1 R360 FROM/TO SOUND AMP CD353(CP353) CH23043A 5 1 SOUND OUT 2 SOUND GND 3 SP OUT 6 3 82 1/2W C354 C353 0.001 B EAR.JACK J353 HSJ0846-01-200 2 0.0022X B351 6 BL01RN1-A63T6 (EARPHONE PCB) SOUND_OUT 5 SOUND_GND SP_OUT L353 HF57T18.
A B C D E F G H INTERCONNECTION DIAGRAM 8 8 REMOTE CONTROLLER REMOCON SENSOR OS753 TM101 GND OPERATION1 +B PCB030 TE6895 V.OUT 1 DECK MECHA ASS’Y CAPSTAN DD UNIT HALL VCC SP352 1 2 TU AGC U IN 2 1 3 4 5 6 7 8 9 IF CP301 1 SP OUT GND 10 CD301 11 SPEAKER +B 2 IF AGC AGC CTL L353 TR 4 P.CON+5V 3 TV.AUDIO 2 SP OUT AFT S.CURVE SOUND GND 3 GND SP OUT SW501 5 NC ABCL/X-RAY 3 V.NF L503 CD H.
WAVEFORMS Y/C 1 MICON REC 200mV. 10U/div 7 REC 2V. 10U/div 13 REC/PB 0.5V 5V/div 18 SYSCON 1V 10U/div 22 1V 20U/div color 27 1V 20U/div 28 1V 20U/div CHROMA 2 REC 200mV. 0.5V/div 8 REC/PB 0.5V. 0.5V/div 14 REC/PB 20mV 5V/div 19 1V 20U/div 23 3 PB 200mV. 0.5V/div 9 REC/PB 20mV. 0.5V/div 14 REC/PB 2V 5V/div 20 2V 20U/div 23 1V 20U/div color 29 1V 20U/div 2V 20U/div 24 1V 500U/div 30 1V 20U/div 2V 20U/div 4 REC 200mV. 0.2U/div 10 REC/PB 200mV. 10V/div 15 REC/PB 0.
WAVEFORMS SOUND AMP HEAD AMP 33 39 REC/PB 500mV. 5V/div 45 REC 500mV. 50V/div 40 REC/PB 1V. 20U/div 46 PB 50mV. 0.1s/div 5V. 500U/div DEFLECTION 34 2V. 5V/div 35 5V. 20U/div CRT 41 PB 500V. 0.1s/div 36 50V. 20U/div 42 REC 50mV. 10U/div 37 50V. 20U/div 43 REC/PB 10mV. 1s/div 38 50V. 20U/div 44 PB 50mV 50V/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
MECHANICAL EXPLODED VIEW 215 138 215 153 205 215 J801 217 205 111 144 215 212 136 217 139 PCB110 (CRT PCB) 217 L503 222 144 212 123 154 144 217 204 204 V801 204 222 223 141 143 205 115 144 204 119 FB401 122 204 223 113 111 117 205 119 204 203 122 112 151 146 140 213 151 PCB070 (MAIN PCB) 151 129 127 134 127 213 205 PCB340 (POWER SW PCB) 152 SP352 135 214 206 131 A 132 149 PCB390 (EARPHONE PCB) 130 207 150 128 133 130 101 126 L1-1 114 116 204
MECHANICAL EXPLODED VIEW 211 205 147 211 118 155 219 137 207 211 220 211 142 124 145 221 218 209 125 208 218 209 PCB330 (HEAD AMP PCB) 208 209 109 105 111 201 120 216 105 107 103 110 PCB010 (SYSCON PCB) 210 121 216 106 PCB030 (OPERATION 1 PCB) PCB350 (IF PCB) 104 108 A 102 202 L1-2
MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. 101 102 103 104 105 106 107 108 109 S5-191-1M7-200 ---------S5-3WU-A00-390 S5-4WP-AA0-040 S5-4WP-AA0-030 S6-1WP-A01-430 S7-1WP-AA0-320 110 111 112 113 114 115 116 117 118 119 DESCRIPTION Q'TY REF. NO. PART NO.
CHASSIS EXPLODED VIEW (TOP VIEW) 513 513 M2003 514 514 UN4001 504 301 504 512 503 505 302 H5002 310 303 334 H5001 510 510 311 315 312 371 316 503 304 501 305 306 309 319 313 308 316 501 318 503 321 360 M101 508 307 519 322 323 317 320 330 511 331 504 332 327 324 516 515 335 516 336 338 325 333 339 326 337 329 340 509 314 328 M1-1
CHASSIS EXPLODED VIEW (BOTTOM VIEW) 504 SW101 504 504 502 342 502 M2001 343 369 344 345 346 518 518 351 504 370 370 348 357 503 350 347 357 354 349 352 353 355 341 356 515 359 507 358 517 361 364 368 507 362 366 367 365 363 506 M1-2
FRONT LOADING UNIT 9 EXPLODED VIEW 420 425 415 416 417 402 401 406 405 404 421 410 419 403 407 411 414 409 418 423 421 422 408 422 412 413 411 424 M1-3
CHASSIS/FRONT LOADING UNIT 9 REPLACEMENT PARTS LIST # # # # # # # # # # # # # # # # # # # REF. NO PARTS NO. 301 302 303 304 305 306 307 308 309 S5-OP6-004-710 S5-OP4-003-580 S5-OA4-001-220 S5-OA4-001-240 S5-OA4-001-230 S5-OA6-001-550 S5-OA6-001-560 S5-OP8-002-520 S5-OP9-005-640 310 311 312 313 314 315 316 317 318 319 DESCRIPTION Q'TY REF. NO PARTS NO.
ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. SYSCON PCB ASS'Y *** CAPACITORS *** *** RESISTOR *** ! R1042 C5023 C5026 C5027 C5030 C6105 C6110 C6116 C6119 C6149 C6312 C6402 87-029-165-060 RES,FUSE 2.
ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO.
ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO.
ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO.
ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION *** COILS *** L6002 L6004 L6005 L6007 L6009 L6010 L6011 L6012 87-003-152-010 87-003-282-010 S2-1LA-61R-2K0 87-003-144-010 87-003-102-010 87-003-148-010 S3-360-K00-6R0 S3-360-K00-5R0 COIL,100UH COIL,12UH COIL,1.2UH COIL,6.
2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 920074 Printed in Japan
