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CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..MECHANISM OF VCR PART SECTION 5 ..MECHANISM OF DVD PART SECTION 6 .
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY SONNEL COVER THE SUBJECT OF X-RADIATION.
SERVICING PRECAUTIONS CAUTION : Before servicing the VCR+DVD covered by this Electrostatically Sensitive (ES) Devices service data and its supplements and addends, read and fol- Some semiconductor (solid state) devices can be damaged low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir- easily by static electricity.
SERVICE INFORMATION FOR EEPROM POWER ON DETECT NEW EEPROM DVD LOGO Status (NO Disk status) (OPTION EDIT SCREEN) MODEL ZDX-313 NAME HEX Remotecontrol OPT 1 55 Pause key-->1-->4-->7-->2 in order. OPT 2 53 OPT 3 00 OPT 4 41 OPT 5 12...
SPECIFICATIONS • GENERAL Power requirements 120V, 60 Hz Power consumption 16 W Dimensions (approx.) 16.9" X 3.1" X 10.4" (430 X 78.5 X 265 mm) (w x h x d) Weight (approx.) 9.24 lbs (4.2 kg) Operating temperature 5˚C to 40˚C (41˚F to 104˚F) Operating humidity 5 % to 90 % Signal system...
SECTION 3 ELECTRICAL CONTENTS OVERALL WIRING DIAGRAM DVD PART .....3-2 ELECTRICAL TROUBLESHOOTING VCR PART GUIDE ..............3-61 1. SYSTEM OPERATION FLOW .....3-61 ELECTRICAL ADJUSTMENT 2. SYSTEM TEST FLOW .........3-62 PROCEDURES ..........3-3 DETAILS AND WAVEFORMS ON SYSTEM ELECTRICAL TEST AND DEBUGGING TROUBLESHOOTING GUIDE ......3-63 ......3-4 1.
VCR PART ELECTRICAL ADJUSTMENT PROCEDURES 1. Servo Adjustment 1) PG Adjustment • Test Equipment a) OSCILLOSCOPE b) NTSC MODEL : NTSC SP TEST TAPE • Adjustment And Specification MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION V.Out PLAY R/C TRK JIG KEY 6.5 ±...
ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) CIRCUIT (1) NNo 5.3VA No 5.3VA Is FR101 Replace FR101 Normal? (Use the same ICW) Is BD101 Replace Normal? BD101 Is R101 Replace R101 Normal? Is Vcc (9V - 18V) sup- Is D102 Check or Replace plied to IC101 Pin2? normal? D102...
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(2) No 5.0V_D (3) No 5.0V_T No 5.0V_D No 5.0V_T Is the Vcc(5.3V) sup- Is the Vcc(5.3V) sup- Check or Replace Check or Replace plied to Q165 Emittor? D125 D125 plied to Q163 Emittor? Is the Q162 Base Is the Q162 Base Check the PWR CTL Check the PWR CTL ‘H’?
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(6) No Motor_Vcc (To Cap, Drum Motor ) (7) No REG 12V No Motor_Vcc No REG 12V Check or Replace Check or Replace Is the Vcc(14V) Is the Vcc(14V) supplied supplied to C134? to Q165 Collector? D124 D124 Is the Vcc(14V) sup- Check or Replace Check the PWR CTL the Cap / Drum...
2. SYSTEM/KEY CIRCUIT (1) AUTO STOP Auto Stop Does the SW30 waveform Check the Drum Motor appear at IC501 signal. Pin18? Do T/UP Reel Pulses Do the T-UP Reel Pulses Does 5V appear at appear at the point appear at IC501 Pin80? RS501? between R556 and R536? Replace the T/UP Reel...
3. SERVO CIRCUIT (1) Unstable Video in PB MODE Unstable Video in PB Mode. Does the Noise level of the screen change periodically? Do the CTL pulses appear Is adjusting the height of at IC501 Pin97? the CTL Head accurate? Does the CFG waveform Readjust the height of the appear at IC501...
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2. SERVO CIRCUIT (3) When the Capstan Motor doesn’t run, When the Capstan Motor doesn’t run, Refer to “SMPS(CAPSTAN/12Volt) Does 12VA appear at PMC01? Trouble Shooting”. Does 2.8V appear at PMC01 Pin 9? Check the PMC01 and the Capstan Does the PWM signal appear at IC501 Pin77? Motor Ass’y.
2. SERVO CIRCUIT (4) KEY doesn’t working KEY doesn’t working. Is 5V applied to IC501 Refer to “SMPS 5.3VA Pin99? Trouble Shooting”. Does LED or FLD change Replace the defective when a function button is switches. pressed? 4. OSD CIRCUIT (1) No OSD display.
5. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Does the Video signal Does the Video signal Check DVD Video Input appear at IC301 appear at IC302 (IC601, Pin150), Tuner Pins28, 30, 32? Pins1, 3? Video Input (TU701 Pin16), Line Video Input (JK901), respectively.
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3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode, Is 5V applied to IC301 Check the line of the SW 5V Line. Pins23, 44, 45, 52, 68, 77? Is the Y/C Bus siganl Refer to ‘SYSTEM Y/C applied to IC301 BUS CHECK Trouble...
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3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, Is SW 5V applied to IC301 Check the line of the REG 5V Line. (Power Circuit) Pins23, 44, 45, 52, 68, 77? Does the Color signal Is the oscillation frequency appear at IC301 of X301 (3.58MHZ)
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3. Y/C CIRCUIT (4) When the Video signal doesn’t appear on the screen in REC Mode, REC mode Is EE mode normal? Check the EE mode Is brightness normal? Is color normal? Is the brightness signal sup- Does signal appear at Check X301 oscillation IC301 Pins41, 50? frequency.
6. Hi-Fi CIRCUIT (1) No Sound(EE Mode) No Sound. Check the SIF.IN of IC801 Pins57. Check the TU701 SIF Pin13. Check the DVD Audio of IC801 Check the DVD MODULE. (PMD02 Pins13, 15). Pins12, 74. Check the LINE1 Audio of IC801 Check the Rear Jack.
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3. Y/C CIRCUIT (2) Hi-Fi Playback PB mode No Sound. Check the Vcc of IC801 Check Power. (Pins3, 5, 15, 32, 36, 46, 54). Check the Hi-Fi Selection switch. Check IC501 Pin19 (A.H/SW) (IC801 Pin39) and the Tape quality. Is the RF Envelope at IC801 Pin23 over 3Vp-p? Check IC801 Pin37(Data), Check the parts of µ-COM...
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(3) Hi-Fi REC Hi-Fi REC. It is impossible to record Hi-Fi Audio signal. Check Vcc of IC801. Check Power. (Pins3, 5, 15, 32, 36, 46, 54) Check ports of µ-CPM. Check IC801 Pin37(Data), Pin38(CLOCK). (IC501 Pins71, 72) Check Audio input signal of IC801 Do Audio signals appear at IC801 Pin6? Pin57(TU.A.), 7, 69(DVD.A.), 11, 73(LINE1.A.), 9, 71(LINE2.A.)
7. Tuner/IF CIRCUIT (1) No Picture on the TV screen No picture on the TV screen Does the Video signal at Is +33V applied to TU701 Check 33V line. the TU701 Pin16. Pin14? Is +5V applied to TU701 Check 5V line. Pin3? Does the Clock signal Check the lIC Clock Signal...
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(2) No Sound No Sound. Check the Vcc of TU701 Pins3, 14. Check 5V, 33V Line. Check the Tuner SiF signal at IC801 Check the Tuner SIF of TU701 Pin13. Pin57. 1. Check the Vcc(5.3VA, 9V) of IC801 Check the Audio of IC801 Pins78, 80. Pins3, 5, 36, 54.
5. Hi-Fi BLOCK DIAGRAM Hi-Fi/ AUDIO INPUT 26 27 BLOCK DEMO DULATE FM MODU A.OUT 'L' DE MODU DVD A.IN 'L' A.OUT DVD AUDIO A.OUT 'R' To JACK DVD A.IN 'R' AV1 A.IN 'L' INPUT REAR JACK OUTPUT SELECT AV1 A.IN 'R' SELECT MODULATOR AV2 A.IN 'L'...
2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE ZENITH ELECTRONICS CORPORATION. PERFORMANCE IMPROVEMENT CHANGES INTO ALL COMPONENTS SHOULD BE REPLACED ONLY THE SET IS NOT DELAYED UNTIL THE NEW SERVICE WITH TYPES IDENTICAL TO THOSE IN THE ORIGI- LITERATURE IS PRINTED.
3. A/V CIRCUIT DIAGRAM IC301 Pins 53, 54, 55 are defective. IC301 doesn’t operate. X301 is defective. PB COLOR Signal disappear. IC301 Pin 57 is defective. PB COLOR Signal disappear. Q306 is defective. EE, PB Screen doesn’t appear. IC301 Pin 59 is defective. Auto Tracking is failed.
6. SYSTEM CIRCUIT DIAGRAM VCR will not operate. IC505 is defective. Deck will not operate. R575, R576, R577, R578 are defective. µ-COM is unstable. Q501, Q503 are defective. Auto stop occures. RS501,RS502 are defective. Auto Rew will not working. ES501, ES502, LD501 are defective.
DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 1. System operation flow Power On 1. 8032 initializes SERVO, DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray Closed? Tray Close to Closed position SLED at Inner Side? SLED Moves to Inner Position 1.
2. SYSTEM Test flow TEST Check the AC Voltage Replace power PCBA or Power PCBA(110V or 220V) AC transformer. Switch on the Power PCBA Is the DC Voltage Repair or Replace Power PCBA outputs OK? (5V,1.8V,3.3V,8V,12V) Make sure the main PCBA don't short on VCCs and switch it on.
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RESET or Power On. Check connection lines between FLASH Flash Memory operates & ZR36868 and the FLASH access time Show LOGO? properly? whether is suitable or not. Check connection lines between SDRAM SDRAM works properly? & ZR36868 and the SDRAM is damaged. ZR36868 VIDEO outputs Check the related circuit of ZR36868 properly?
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Does the SLED move Motor Driver STBY Check the connection line of to inner side when it is at Pin is High? STBY signal. outter position? Is SLED_S Check the related circuit of DC Level higher SLED_S. than 1.4V? SLED+ and Check the amp circuit on motor SEDL- outpup driver.
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Check the laser power circuit Laser turns on when DVD_LD or CD_LD output on ZR36868 and connecting to reading disc? properly? power transistor. Collector voltage of Check the related circuit on power transistor is OK? laser power transistor Check cable connection between transistor ouput and pick-up head.
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Proper signals on Check connections between Focus ON OK? A,B,C,D of ZR36868 ZR36868 and Pick-up head. Check FOCUS_S signal on ZR36868 Properly Check the TRACK_S TRACK_S signal connection on ZR36868 Track On OK? on ZR36868? and motor dirver. Check the tracking control TACT+ &...
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Check connection between Normal Audio output Audio DAC received ZR36868 & Audio DAC. when disc playback? correct data stream? Check the related Normal Audio DAC circuit of Audio DAC. out? Check Audio filter,amplify,mute circuit. Communications between Normal IR.VFD & Front Check communication lines on IR.VFD Front pannel key &...
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL 1) ZR36868 main clock is at 27MHz(X501) 1.0V, 27MHz FIG 1-1 2) ZR36868 reset is low active 5.3VA PWR_CTL_H M_RESET(FRONT) FIG 1-2 3-68...
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3) CN601 waveform during procedure(Downloading) DUPTDO DUPRDO FIG 1-3 4) Flash R/W enable signal during download(Downloading) FIG 1-4 3-69...
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) SLED_S(2.0V/1.4V/1.0V) SLED+(4.7V/4.0V/2.6V) SLED-(5.3V/4.0V/3.0V) FIG 4-1 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) FOCUS_S(1.5V/1.4V/1.3V) FACT+(4.0V/3.6V/3.2V) FACT-(4.0V/3.6V/3.2V) FIG 5-1 3-71...
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Drum Assembly Flat Cable (S1) (S1) (S1) Cap, FPC Holder FPC Fig. A-1 Cautions in assembly of FPC 1. Disassembly of Drum Assembly (Figure A-1) 1) Separate the flat cable from the Drum FPC and the Capstan Motor.
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DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Plate Top (Fig. A-2-1) (B') Holder Assembly CST (Fig. A-2-2) Arm Assembly F/L (Fig. A-2-5) Lever Assembly S/W (Fig. A-2-6) (H4) Opener Door (Fig. A-2-4) (H3) Gear Assembly Rack F/L (Fig. A-2-3) Fig. A-2...
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM 2. Disassembly of Plate Top (Fig. A-2-1) 4. Disassembly of Gear Assembly Rack F/L (Fig. A-2-3) 1) Separate the right part while leaning back the (B) part of 1) Separate the hook (H3) while leaning ahead the hook (3) the plate top toward the arrow direction.
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Arm Assembly Tension (Fig. A-4-2) (H7) Reel T (Fig. A-4-3) Reel S (Fig. A-4-3) Spring Tension Brake Assembly T Spring Tension (Fig. A-4-1) (H8) (H6) Fig. A-4 13. Brake Assembly T (Fig. A-4-1) 15. Reel S/Reel T (Fig. A-4-3) 1) Release the spring tension from the lever spring hook 1) Disassemble the reel S/ reel T while holding it up (com- (H6).
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Opener Lid (Fig. A-5-2) Arm Assembly Pinch (Fig. A-5-3) Base Assembly P4 (Fig. A-5-1) (H9) Arm T/up (Fig. A-5-4) Chassis Fig. A-5 16. Base Assembly P4 (Fig. A-5-1) 18. Arm Assembly Pinch (Fig. A-5-3) 1) Release the (A) part of the base assembly P4 from the 1) Hold the arm assembly pinch up.
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Base Tension (Fig. A-9-1) Arm Assembly Idler Jog (Fig. A-9-2) Chassis Fig. A-9 34. Base Tension (Fig. A-9-1) 35. Arm assembly Idler Jog (Fig. A-9-2) 1) Release the (A) part of the base tension from the 1) Push both (B), (C) parts in Fig.
DECK MECHANISM ADJUSTMENT • Fixtures and Tools for Service 1. Cassette Torque Meter 2. Alignment tape 3. Torque gauge SRK-VHT-303(Not SVC part) Part No NTSC:DTN-0001 600g.Cm ATG Part No:D00-D006 PAL:DTN-0002 Part No:D00-D002 4. Torque gauge adaptor 5. Post height adjusting driver 6.
DECK MECHANISM ADJUSTMENT 1. Mechanism Assembly Mode Check Purpose of adjustment : To make tools normally operate by positioning tools accurately. Fixtures and tools used VCR (VCP) status Checking Position • Eject Mode • Blank Tape (empty tape) • Mechanism and Mode Switch (with cassette withdrawn) 1) Turn the VCR on and take the tape out by pressing the 4) Undo the screw fixing the deck and the main frame, and...
DECK MECHANISM ADJUSTMENT 2. Previous Preparation for Deck Adjustment (Preparation to load the VCR (VCP) with cassette tape not inserted) 1) Take the power cord from the consent. If doing so, proceeding to the stop mode is done. In this 2) Separate the top cover and the plate assembly top.
DECK MECHANISM ADJUSTMENT 4. Guide Roller Height Adjustment Purpose of adjustment : To ensure that the bottom surface of the tape can travel along with the tape lead line of the lower drum by constantly and adjusting and maintaining the height of the tape. 4-1.
DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose of adjustment : To ensure that audio and control signals can be recorded and played according to the contract tract by constantly maintaining distance between tape and head, and tape tension between the P3 post and the P4 post.
DECK MECHANISM ADJUSTMENT 5-2. Tape Path Check between Pinch Roller and travel it stably to ensure there is no crumbling or fold- ing of the tape. Take up Guide (Check in the Rev Mode) 1) Check the tape pass status between the pinch roller and 2) Check there is folding of the tape at the bottom or top the take-up guide.(Check there is crumpling of the tape of the take-up guide in cutting-off the REV mode...
DECK MECHANISM ADJUSTMENT 7. Adjustment after Drum Assembly (Video Heads) Purpose of adjustment : To adjust and stabilize the height change, X-distance change, etc depending on the guide roller after assembling the drum. Fixtures and tools used Connection position VCR (VCP) status Adjustment position •...
PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION 1. Checking Points prior to Repair Following abnormal phenomena may be repaired by removal of foreign materials and oil supply. Check oiling is required at the checking set or cleaning status is complete. Determine that necessity of checking and repair the set exists after checking the using period of the set together with the user.
PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION 2. Essential Check and Repair 4. Tools for Check and Repair Recording density of the video is far higher than the audio. (1) Grease: Floil G-3114 (KANTO) or equivalent grease Therefore video parts are very precise so as to allow only (Green) error of 1/1000mm or so in order to maintain compatibility (2) Grease: Kanto G-754, PL-433 (Yellow)
PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION 5-2) Grease Applications (2) Regular Grease Application Apply grease to the designated application position (1) Grease Application Method every 500 hour. Apply grease by using a cloth swab or brush. Care must be exercised so that excess quantity should not be used.
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PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION Lever, F/R, Base, Tension GEAR AY, P2 & P3 PL-433 LEVER, F/R BASE, TENSION Clutch Contact Part (PL-433, Yellow) Tension Arm Party Hinge Part (PL-433, Yellow) 4-22...
MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism Auto REW doesn't work. Is the supply to the END sensor END sensor "H"? “H”: more than 3.5V “L”: less than 0.7V~1V Is the Vcc. voltage of End Check the syscon power. sensor 5V? Replace End sensor. Is the voltage across IR LED Replace LED.
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MECHANISM TROUBLESHOOTING GUIDE AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 4- 14) Check Pinch spring. In Play/Cue/Rev is the pinch roller in contact with the capstan Is the output of DFG, DPG OK? Replace Drum Motor. shaft. Are there T/up and supply reel Check Servo, Syscon.
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MECHANISM TROUBLESHOOTING GUIDE In PB mode Tape Presence not sensed. Is the Pinch Roller attached Check Alignment positions to the Capstan Motor Shaft? (page 4-14) Does the T/Up Is the Belt ok? Replace the Belt. Reel turn? Check the clutch and the Idler Does the Capstan Motor turn? Assembly.
MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism Cassette cannot be inserted. Does the Lever Assembly Is the Lever Assembly Switch Replace or add the Lever Switch work? Spring damaged or omitted? Assembly Switch Spring. Does the CST IN Switch work Replace CST IN Switch.
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MECHANISM TROUBLESHOOTING GUIDE Cassette will not load. Does the CST insert? Does the Opener Lid work? Replace the Lid Opener. Does the F/L Gear Rack work? Replace the F/L Rear Rack. Does the Door Opener work? Does the F/L Arm Assembly work? Is the Door opener assembled correctly? Does the L/D Motor work? Replace the F/L Arm Assembly.
DECK MECHANISM DISASSEMBLY MAIN BASE TRAY DISC DISC CLAMP ASSEMBLY PLATE CLAMP MAGNET CLAMP CLAMP UPPER (Fig. A) BASE MAIN HOLDER LEVER BASE MAIN BASE MAIN BOTTOM SIDE VIEW Fig. 5-1 Fig. 5-2 1. Main Base (Fig. 5-1) 2. Tray Disc (Fig. 5-2) 1-1.
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S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS SW503 6600RRT001G SWITCH,TACT EVQ 213 09K MATSUSHITA 15V DC ALTERNATE SW504 556-213C SWITCH,DETECTOR THV10912B TACT DC 12 V 5-0 A V SW504 6600RRT001G SWITCH,TACT EVQ 213 09K MATSUSHITA 15V DC ALTERNATE SW504 6600RRT001R SWITCH,TACT...