Service manual

ManualsBrandsZenith ManualsDVD VCR ComboXBV323 Series

SERVICE MANUAL

Product Type: DVD+VCR

Chassis: D35 (DECK), DP-7C(MD)

Manual Series: XBV323

Manual Part #: 3829RVN006P

Model Line: F

Product Year: 2003

Summary 1

Cabinet & Main Chassis 2

Electrical 3

Mechanism of VCR Part 4

Mechanism of DVD Part 5

Parts List 6

Published September 2003

by Technical Publications

Zenith Electronics Corporation

201 James Record Road

Huntsville, Alabama 35824-1513

Model Series:

CONTENTS

XBV323

....................................................

.............................

....................................................

.............................

....................................................

Summary of content (140 pages)

PAGE 1
SERVICE MANUAL Product Type: DVD+VCR Chassis: D35 (DECK), DP-7C(MD) Manual Series: XBV323 Manual Part #: 3829RVN006P Model Line: F Product Year: 2003 CONTENTS Summary .................................................... 1 Cabinet & Main Chassis ............................. 2 Electrical .................................................... 3 Mechanism of VCR Part ............................. 4 Mechanism of DVD Part ............................. 5 Parts List .................................................
PAGE 2
PAGE 3
SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ............. 1-2 SERVICING PRECAUTIONS .................................................................................................. 1-3 SPECIFICATIONS ......................................................................................................................
PAGE 4
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS IMPORTANT SAFETY NOTICE A.C. Voltmeter This manual was prepared for use only by properly trained audio-video service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation.
PAGE 5
SERVICING PRECAUTIONS CAUTION: Before servicing the DVD+VCR covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE: if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions. Remember Safety First: General Servicing Precautions 1.
PAGE 6
SPECIFICATIONS General Power requirements Power consumption Dimensions (approx.) Mass (approx.) Operating temperature Operating humidity Signal system AC 120V ,60 Hz 23W 430 X 97.5 X 293 mm (16.9 x 3.9 x 11.5 inches)(w x h x d) 4.8 kg (10.58 lbs) 5 °C to 40 °C (41 °F to 104 °F) 5 % to 90 % NTSC Inputs ANTENNA IN VHS VIDEO IN VHS AUDIO IN Antenna or CATV input,75 ohms 1 Vp-p 75 ohms,sync negative,RCA jack x 1 -6.
PAGE 7
SECTION 2 CABINET & MAIN CHASSIS CONTENTS 1. EXPLODED VIEWS ................................................................................................................2-2 1. Cabinet and Main Frame Section ...........................................................................................2-2 2. Packing Accessory Section ....................................................................................................
PAGE 8
A43 1 280 283 285 A 601 2 274 A49 452 260 B 2-2 452 A46 467 300 467 465 330 4 C 284 330 323 A48 A00 467 250 467 5 LD 276 A46A 467 457 457 3 A42 A26 457 457 EXPLODED VIEWS 1.
PAGE 9
2.
PAGE 10
SECTION 3 ELECTRICAL CONTENTS 1. POWER(SMPS) CIRCUIT .......................................3-4 2. SYSTEM/KEY CIRCUIT ..........................................3-7 3. SERVO CIRCUIT.....................................................3-8 4. OSD CIRCUIT .......................................................3-10 5. Y/C CIRCUIT .........................................................3-11 6. Hi-Fi CIRCUIT .......................................................3-13 7. Tuner/IF CIRCUIT .........................
PAGE 11
PMC01 CFG 1 12VA(CAP) 2 5.2VA 3 CAP REV'H' 4 I-limit 5 MOTOR GND 6 GND 7 12VA(DRUM) 8 CAP CTL 9 LD IN 10 DFG/FG 11 DRUM CTL 12 1 2 P3D03 GND FULL ERASE 1 2 P3D02 CTL(+) CTL(-) A/E(+) A/E(-) A.REC A.PB 1 2 3 4 5 6 DECK 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 PMP01 5.3VA 5.0V GND CAP Vcc REG 12V 33V 12VA(DRUM) PWR CTL 'H' GND NC GND GND 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 SMPS BOARD 1 2 3 4 5 6 7 8 9 VCR PPD01 PDP01 5.3VA 1 8V 2 GND(M) 3 REG 12V 4 3.3V 5 5V 6 3.
PAGE 12
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 PLAY V.Out H/SW(W861, W862) R/C TRK JIG KEY 6.5 ± 0.5H • Adjustment Procedure a) Insert the SP Test Tape and play. b) Connect the CH1 of the oscilloscope to the H/SW(W861, W862) and CH2 to the Video Out for the VCR.
PAGE 13
VCR ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) CIRCUIT (1) No 5.3VA (SYS/Hi-Fi/TUNER) (2) No 12VA (TO CAP, DRUM MOTOR) NO 5.3VA. Is F101 normal? NO 12VA. NO Is the Vcc(13V) supplied NO to (+) terminal in D115? Replace F101. (Use the same type) YES Is BD101 normal? YES NO Is the Vcc(12V) supplied NO to (-) terminal in D115? Replace BD101. YES Is R101 normal? Check or Replace D110. Replace D115. YES NO Check or Replace the Motor Vcc. Replace R101. YES Is Vcc(8.
PAGE 14
VCR ELECTRICAL TROUBLESHOOTING GUIDE (4) No 5V (TO DVD) (5) No 33V (TUNER) NO 5V. No 33V. Is 5.3VA put into Q160 Emitter? NO 5.3VA Line Check. Is Q162 Base “H”? YES Is Q162 Base “H”? YES NO Check or Replace Q161, R154, R155. Check the Power Control. YES Is about 5V put into NO Q160 Base? Check or Replace Q162, R157, R158, R159, D121. YES Check or Replace Q162/Q160 (6) No REG 12V (7) No -27VA NO -27VA. No REG 12V. Is 13V put into Q156 Collector? NO Check or Replace D110.
PAGE 15
VCR ELECTRICAL TROUBLESHOOTING GUIDE (8) No 8V(TO DVD) (9) No 3.3V(TO DVD) NO 8V. NO 3.3V. Is Vcc(13V) supplied to NO (+) terminal in D114? Check or Replace D110. Is Vcc(4V) supplied to IC152 Pin1? YES Check or Replace D111. NO Check the Power Control. YES Is Vcc(12V) supplied NO to IC151 Pin1? Check or Replace D114. Is the Q162 Base “H”? YES Is Q162 Base “H”? NO YES NO Check the Power Control. Check or Replace IC152, R156, C153. YES Check or Replace IC151, R170, C154.
PAGE 16
VCR ELECTRICAL TROUBLESHOOTING GUIDE 2. SYSTEM/KEY CIRCUIT (1) AUTO STOP Auto Stop Does the SW30 waveform appear at IC501 Pin18? NO Check the Drum Motor signal. NO Do T/UP Reel Pulses appear at the point between R556 and R536? YES YES Do the T-UP Reel Pulses appear at IC501 Pin80? YES NO Replace the T/UP Reel Sensor (RS501). Replace the IC501. Does 5V appear at the RS501? YES NO Check the Q160 Power Circuit.
PAGE 17
VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. SERVO CIRCUIT (1) Unstable Video in PB MODE Does the Noise level of the screen change periodically? Do the CTL pulses appear at IC501 Pin97? NO Is the height adjustment of the CTL Head accurate? NO YES Confirm the CFG waveform at IC501 Pin87? On tracking do the CTL pulses move? YES NO Readjust the height of the CTL Head. Replace IC501.
PAGE 18
VCR ELECTRICAL TROUBLESHOOTING GUIDE 2. SERVO CIRCUIT (3) When the Capstan Motor doesn’t run, When the Capstan Motor doesn’t run, Does 12VA appear at PMC01? NO Refer to “SMPS(CAPSTAN/12Volt) Trouble Shooting”. YES Does 2.8V appear at PMC01? NO YES Check the PMC01 and the Capstan Motor Ass’y.
PAGE 19
VCR ELECTRICAL TROUBLESHOOTING GUIDE 2. SERVO CIRCUIT (4) Keys do not work Keys do not work Is 5V applied to IC501 Pin79? NO Refer to “SMPS 5.3VA Trouble Shooting”. NO Replace the defective switches. NO Refer to “SMPS 5.3VA Trouble Shooting”. NO Check or Replace the pheripheral Circurity.(L511, R518, C596, C595) YES Does LED or FLD change when a function button is pressed? 4. OSD CIRCUIT (1) No OSD display. No OSD or F.OSD display. Is 5.
PAGE 20
VCR ELECTRICAL TROUBLESHOOTING GUIDE 5. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Does the Video signal appear at IC301 Pins28, 30, 32? NO Does the Video signal appear at IC302 Pins1, 5? NO Check DVD Video Input (IC802, Pin29), Tuner Video Input (TU701 Pin24), Line Video Input (JK801), respectively. NO Check the REG 5V Line. (Power Circuit) YES YES Is there 5V at IC302 Pin6? YES Replace IC302. Is REG 5.0V applied to IC301Pins23, 44, 45, 52, 68, 77? NO Check the REG 5V Line.
PAGE 21
VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode, Is 5V applied to IC301 Pins23, 44, 45, 52, 68, 77? NO Check the line of the REG 5V Line. (Power Circuit) NO Refer to ‘SYSTEM Y/C BUS CHECK Trouble Shooting’. NO Is the V.H.S/W signal applied to IC301 Pin57? YES Is the Y/C Bus siganl applied to IC301 Pins53, 54, 55? YES Does the normal RF signal appear at IC301 Pin 14? NO Check the System Circuit.
PAGE 22
VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, NO Is 5V applied to IC301 Pins23, 44, 45, 52, 68, 77? Check the line of the REG 5V Line. (Power Circuit) YES Does the Color signal appear at IC301 Pins41, 50? YES NO Is X301 (3.58MHz) normal? NO Does the Color signal appear at IC301 Pin48? NO YES Replace IC301. Replace IC301. 3-13 Replace X301. Check C342, C341, R333.
PAGE 23
VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. Y/C CIRCUIT (4) When the Video signal doesn’t appear on the screen in REC Mode, REC mode NO Is EE mode normal? Check the EE mode YES YES Is brightness normal? Is color normal? YES A NO Is the brightness signal sup- NO plied to IC301 Pins18? Does signal appear at IC301 Pins41, 50? YES Check X301 oscillation frequency. NO YES Check the power of Pins23, 44, 45, 52, 68, 77.
PAGE 24
VCR ELECTRICAL TROUBLESHOOTING GUIDE 6. Hi-Fi CIRCUIT (1) No Sound(EE Mode) No Sound. Check the SIF.IN of IC801 Pins57. NO Check the TU701 SIF Pin13. Check the DVD Audio of IC801 Pins12, 74. NO Check the AV1 Audio of IC801 Pins11, 73. NO Check the Rear Jack. (JK601 Audio in). Check the AV2 Audio of IC801 Pins9, 71. NO Check the front Jack. (JK5L1 Audio in). Check the Vcc of IC801 Pins3, 5, 15, 32, 36, 46, 54. Check the DVD MODULE. (PMD02 Pins9, 11). YES NO Check the Power 5.2V, 5.
PAGE 25
VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. Y/C CIRCUIT (2) Hi-Fi Playback No Sound. YES Check the Vcc of IC801 (Pins3, 5, 15, 32, 36, 46, 54). YES NO NO Check the Hi-Fi Selection switch. (IC801 Pin39) and the Tape quality. YES Is the RF Envelope at IC801 Pin23 over 3Vp-p? YES NO Check IC801 Pin37(Data), Pin38(Clock) YES NO NO Do Audio Signals appear at IC801 Pin80(L-CH), 78(R-CH)? YES Do Audio Signals appear at JK601? NO Check Power. Check IC501 Pin19 (A.
PAGE 26
VCR ELECTRICAL TROUBLESHOOTING GUIDE (3) Hi-Fi REC No recorded Hi-Fi Audio Signal Check Vcc of IC801. (Pins3, 5, 15, 32, 36, 46, 54) NO Check Power. YES Check IC801 Pin37(Data), Pin38(CLOCK). NO Check ports of µ-CPM. (IC501 Pins71, 72) YES Do Audio signals appear at IC801 Pin6? NO Check Audio input signal of IC801 Pin57(TU.A.), 7, 69(DVD.A.), 11, 73(AVI.A.), 9, 71(AV2.A.) YES Do Audio signals appear at IC301 Pin76(Normal Audio)? NO Check C825, C306, R311, R312, R346.
PAGE 27
VCR ELECTRICAL TROUBLESHOOTING GUIDE 7. Tuner/IF CIRCUIT (1) No Picture on the TV screen No picture on the TV screen Does the Video signal appear at TU701 Pin16. NO Is +33V applied to TU701 Pin14? YES NO Check 33V line. YES Is +5V applied to TU701 Pin3? NO Check 5V line. YES Does the Clock signal appear at TU701 Pin9? NO Check the l2C Clock Signal of µ-COM Pin71. NO Check the l2C Data Signal of µ-COM Pin72. YES Does the data signal appear at TU701 Pin10? YES Replace Tuner.
PAGE 28
VCR ELECTRICAL TROUBLESHOOTING GUIDE (2) No Sound No Sound. Check the Vcc of TU701 Pins3, 14. NO Check 5.2V, 33V Line. YES Check the Tuner SiF signal at IC801 Pin57. NO Check the Tuner SIF of TU701 Pin13. YES Check the Audio of IC801 Pins78, 80. NO YES Check the Signal flow from IC801 Pins78, 80 to JK601 Audio out(L), (R) 3-19 1. Check the Vcc(5.3VA, 9V) of IC801 Pins3, 5, 36, 54. 2. Check the I2C Clock and Data at IC801 Pins37, 38.
PAGE 29
BLOCK DIAGRAMS 1.
PAGE 30
PMP01-PPM01 5.3VA 5.0V GND CAP VCC REG 12V 33V DRUM VCC PWR CTL 'H' GND HSR 'H' GND GND FD(-) FD(+) -27VA PWR CTL 'H' HSR 'H' NC TU 30V SIF A.OUT AFT DATA CLOCK ENABLE NC RF AGC V.IN CONTROL REG 5V CH S/W A.IN 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 786 REG 9V V.OUT 3-22 107 REG 5V 104 CAP VCC 102 REG 12V 103 DRUM VCC 83 81 110 FD(-) 109 FD(+) 108 -27VA 999 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2. TU/IF BLOCK DIAGRAM 875 MOD A.IN 61 26 REG. BLOCK 5V REG. BLOCK 9V TU.V.
PAGE 31
3. Y/C BLOCK DIAGRAM 59 ENV DET 58 57 55 54 53 Y/C ENA Y/C DATA Y/C CLOCK 57 55 54 53 X-TAL 3.58MHZ V. H/SW (REC Mode) Y/C ENA Y/C DATA Y/C CLOCK (PB Mode) 51 50 49 48 47 SERIAL DECODER AUDIO C-ROT MUTE RF-SW HA SW IN OUT VX01 320FH VCO SLD OUT 39 38 39 REC APC REC APC CCD 37 CLAMP IN CCD 64 ACC CLAMP EP PB 'A' 65 67 CLAMP P 34 SUB CONV SUB CONV YNR COMB SP REC CLAMP Y LPF 73 32 B-UP AMP R 3.
PAGE 32
3-26 REAR Jack 2 3 EQ AMP 3-27 1 LINE AUDIO(L) IN LINE AUDIO(R) IN A_IN RF MOD. 13 71 9 2 57 55 DATA 4 78 A. OUT (R) 80 4 6 (System) 4 NORMAL AUDIO OUT From u-COM A. OUT (L) IC801 LA72670M CLOCK 54 10 78 A. OUT (R) 80 A. OUT (L) AMP 53 ENA 71 9 2 57 6 NORMAL AUDIO OUT 10 76 ALC 2 78 80 DET ALC REC AMP DET IC301 LA71206M OUTPUT SELECTOR IC801 LA72670M 10 76 IC301 LA71206M 9 MOD. OUT A. OUT (R) A.
PAGE 33
5. Hi-Fi BLOCK DIAGRAM A SIF 57 DVD A.IN 'L' 12 DVD A.IN 'R' 74 AV1 A.IN 'L' 11 AV1 A.IN 'R' 73 AV2 A.IN 'L' 9 AV2 A.IN 'R' 71 24 26 27 Hi-Fi PB 'A' AUDIO INPUT BLOCK Hi-Fi REC B Hi-Fi PB 'B' Hi-Fi/ REC 80 IC801 LA72670M 78 3 6 4 NORMAL AUDIO OUT(To AVCP) NORMAL AUDIO IN(From AVCP) 3-28 3-29 A.OUT 'L' A.OUT 'R' A.OUT To JACK MODULATOR A.
PAGE 34
6. SYSTEM BLOCK DIAGRAM TO/FROM DECK TO/FROM AVCP 5.3VA 23 MODE S3 CV IN 50 SQPB H.A.SW D.V.Sync V. ENV V.H.SW30 9 18 13 16 59 59 LD CTL DPG CFG 90 87 12 CAP. REV 'H' 24 MODE S2 76 95 94 CTL - 77 I-Limit 25 MODE S1 CTL + 11 GND MODE S1 MODE S2 MODE S3 MODE S4 CAP. PWM MS501 DRUM PWM MODE S/W COMP IN 17 REC 'H' 74 C.ROT 15 A.MUTE'H' 84 DISPLAY 22 MODE S4 S clk 67 S in 66 S out 65 IC5F1 X502 14MHz 38 X in OSC 5V T-UP END X501 ES501 32.768KHz R550 A. ENV A. H.SW A.
PAGE 35
CIRCUIT DIAGRAMS IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE ZENITH ELECTRONICS CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGI- 1. POWER(SMPS) CIRCUIT DIAGRAM No power. BD101, R101 are defective. 12VA no power. D110 is defective. 2.5V, 3.3V no power. D111 is defective. Switching Error. IC101 is defective. 5.3VA no power. D112 is defective.
PAGE 36
2.
PAGE 37
3. A/V CIRCUIT DIAGRAM IC301 doesn’t operate. IC301 Pins 53, 54, 55 are defective. 6 PB COLOR Signal does not appear. IC301 is defective. PB COLOR Signal does not appear. IC301 Pin 57 is defective. 3 Auto Tracking has failed. IC301 Pin 59 is defective. 9 2 8 5 4 1 1 7 1 PB Y+C REC Y+C Normal Audio Signal is not recorded. FL301, Q304, Q305 are defective. WAVEFORM 3-36 3-37 EE, PB Screen doesn’t appear. IC306, Q307 are defective.
PAGE 38
4. Hi-Fi CIRCUIT DIAGRAM No Audio IC801 Pins37, 38 aredefective. KTC3875 100 100 No Hi Fi Audio 23 Pin is defective. T/W '02. 12.
PAGE 39
5.
PAGE 40
6. SYSTEM CIRCUIT DIAGRAM • Reset is defective. • Set dead. IC504 is defective. MTZ5.6B MTZ5.6B 8 4 5 7 6 28 29 VCR LCD DVD LED NC 2 3 IC501 M37762 1 µ-COM will not operate. X502 is defective. 0 CLOCK SETTING will not operate. X501 is defective. 14 504 1K C542 680P µ-COM is unstable. Q501, Q503 are defective. VCR will not operate. IC505 is defective. Deck will not operate. R575, R576, R577, R578 are defective. R545 0 4 3 2 1 EEPROM IC503 5 R502 100 72 Auto stop occures.
PAGE 41
7.
PAGE 42
• WAVEFORMS * IC301 Waveform * IC501 Waveform 280 Acqs Tek Stop : 10.0KS/s 299 Acqs T Tek Stop : 250KS/s T 18 Acqs Tek Stop : 10.0KS/s Trigger Position: 12% 27 Acqs Tek Stop : 10.0KS/s T T T T T 1 T 1 1 Ch1 IC301 Pins 20, 21, 22 100mV/10msec DIV VV/EE 20 Main DE Emphasis Filter 21 Main DE Emphasis out 22 Clamp in IC301 Pin 32 200mV/10msec DIV EE (VIDEO IN) IC301 Pin 41 100mV/0.2msec DIV REC/PB (2fsc) IC301 Pin 25 1.0V/20msec DIV VV/EE (C-SYNC OUT) 1.00 V M5.00ms Ch1 3.
PAGE 43
• CIRCUIT VOLTAGE CHART MODE PIN NO. EE PLAY IC301 MODE PIN NO. EE PLAY MODE PIN NO. EE PLAY MODE PIN NO. EE PLAY MODE PIN NO. EE PLAY MODE PIN NO. EE PLAY Location No. Base Emitter EE PB EE PB Collector EE PB 55 0.68 0.93 20 0 0 75 0 0 5 5.19 5.19 60 3.86 0.23 Q301 4.26 4.26 4.97 4.96 4.907 4.91 1 2.3 2.31 56 0 0 21 0.11 0.11 76 0 1.79 6 1.91 2.07 61 3.15 0.24 Q302 0.758 1.74 0 0 0 0 2 2.29 2.28 57 0 2.56 22 5.17 5.
PAGE 44
PRINTED CIRCUIT DIAGRAMS 1. VCR P.C.
PAGE 45
2. KEY 1(LEFT) P.C.BOARD LOCATION GUIDE 3. KEY 2(RIGHT) P.C.
PAGE 46
4. POWER P.C.BOARD NOTES) NOTES) NOTES) NOTES) Warning Parts that are shaded are critical With respect to risk of fire or electricial shock.
PAGE 47
DVD SECTION 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 Yes Tray Closed? No Tray Close to Closed position SLED at Inner Side? Yes No SLED Moves to Inner Position 1. Judge whether have disc and disc type 2. Jump to related disc reading procedure Recieve OPEN/ CLOSE Key? No 1. Execute Pressed Key & IR Key 2. Systemoperati on Routi ne Loop 1. Stop Playback & Open Tray 2.
PAGE 48
2. Test & debug flow TEST Check the AC Vol tage Power PCBA (110V or 220V) No Check the POWER PART Yes Switch on the Power PCBA Is the DC Voltage outputs OK? (5V, 3.3V, 8V, 12V) No Check the POWER PART Yes Is 3.3V and 2.5V DC outputs normal on main PCBA? No Check the regulators or diode(D601). Yes Communication between VCR & DVD is normally? No Check the cable connection. (PDV02) Yes Connect to PC RS232 Cable and update the FLASH memory code. Update FLASH(IC5A1) successfully? No 1.
PAGE 49
A RESET or Power On. Show LOGO? NO Flash Memory operates properly? NO Check connection lines between FLASH & MT1379 and the FLASH access time whether is sui table or not. NO Check connection lines between SDRAM(IC502,IC503) & MT1379 and the SDRAM is damaged. YES YES SDRAM works properl y? YES MT1379 VIDEO outputs properly? NO Check the related circuit of MT1379. (IC501 PIN 161,166, 168 check) YES Have TV signal output? NO Check the filtering and amp circuit of TV si gnal .
PAGE 50
B Does the SLED move No to inner side when it is at outer position? Yes No Motor Driver STBY Pin is High? Check the connection line of STBY signal . OK Yes Motor Driver STBY Pin is High? No Check the related circuit of FMSO. No Check the amp circuit on motor driver. Yes SL+ and SL- output properly? Yes Do not put in disc and tray close. Optical Lens has movements for searching Focus? Yes Check the cable connection with MECHA.
PAGE 51
C Laser turns on when reading disc? No Yes LD01 or LD02 output properly? No Check the laser power circuit on MT1336 and connecting to power transistor. (Q204, Q205) No Check the related circuit on laser power transi stor Yes Collector voltage of power transistor is OK? ( Q204, Q205) Yes Check cable connection between transistor output and pick-up head. Disc ID is correct? No Proper RFL signal on MT1336? No Check the related circuit on MT1336 RFL signal .
PAGE 52
D Yes Focus ON OK? No Proper signals on A, B, C, D of MT1336 No Check connections between MT1336 and pick-up head. No Check the related circuit on MT1336 FEO sugnal . Yes Yes Proper FEO signal on MT1336? Yes Check FEO connection between MT1336 and MT1379 Track On OK? No Proper FEO signal on MT1336? No Check the related circuit on MT1336 Yes Yes Properly TRSO signal on MT1379? No Check the TRSO connection on MT1379 and motor dirver.
PAGE 53
E Normal Audio output when disc playback? YES NO Audio DAC received correct data stream? NO Check connection between MT1379 & Audio DAC. (Check VRST#, ACLK, ABCK, ASDAT3) NO Check the related circuit of Audio DAC. (Check Audio out Pin 14, 15,18,19) YES Normal Audio DAC out? (IC401) YES Check Audio filter, amplify, mute circuit.
PAGE 54
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL 1) MT1379 main clock is at 27MHz(X501) 3.8V, 27MHz FIG 1-1 2) MT1379 & MT1336 reset is high active. Power Cord in 5.
PAGE 55
3) RS232 waveform during procedure(Downloading) TXD(J6 PIN3) RXD(J6 PIN 2) FIG 1-3 4) Flash R/W enable signal during download(Downloading) FRD(IC5A1 PIN 28) FWR(IC5A1 PIN 11) FIG 1-4 3-64
PAGE 56
2. SDRAM CLOCK 1) MT1379 main clock is at 27MHz(X501) DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V (IC502,IC503 PIN 35) FIG 2-1 3.
PAGE 57
2) Tray close waveform OPEN((CN203 PIN 3) CLOSE(CN203 PIN 2) TROPEN(IC202 PIN 1) TRCLOSE(IC202 PIN 2) FIG 3-2 3) Tray open waveform OPEN((CN203 PIN 3) CLOSE(CN203 PIN 2) TROPEN(IC202 PIN 1) TRCLOSE(IC202 PIN 2) FIG 3-3 3-66
PAGE 58
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(2.0V/1.4V/1.0V) (IC501 PIN 19) STBY(5V) – (IC201 PIN 50) SL+(4.7V/3.6V/1.9V) (IC202 PIN 12) SL-(5.3V/3.7V/2.5V) (IC202 PIN 13) FIG 4-1 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) FOSO(1.5V/1.4V/1.3V) (IC501 PIN 12) F+(4.0V/3.6V/3.2V) (IC202 PIN 9) F-(4.0V/3.6V/3.
PAGE 59
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) MDI1(0V/180mV) (IC201 PIN 124) LD01(5.0V//3.5V) IC201 PIN 125) LD02(5.0V/3.6V) (IC201 PIN 126) FIG 6-1 7.
PAGE 60
F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-2 (DVD) F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-3 (CD) 3-69
PAGE 61
F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-4 (CD) 8.
PAGE 62
FE(IC201 PIN 18) FOSO(IC501 PIN12) F+(IC202 PIN 9) F-(IC202 PIN 8) FIG 8-2 (CD) 9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION) DMSO(1.4V/1.8V) (IC501 PIN 18) SP-(3.6V/2.4V) (IC202 PIN 10) SP+(3.6V/4.
PAGE 63
10.
PAGE 64
11. RF WAVEFORM RFOP(2.3V/1.1V) (IC201 PIN 6) RFON(0.8V/2.0V) (IC201 PIN 7) FIG 11-1 12.
PAGE 65
13.
PAGE 66
3) C (IC604 PIN 26) FIG 13-3 14.
PAGE 67
2) Audio related Signal ASDATA3 ASDAT3(IC501 PIN 157) ABCK(IC501 PIN 148) ALRCK(IC501 PIN 149) FIG 14-2 3-76
PAGE 68
M LOAD+,LOAD- DECK MECHANISM 3-77 F+,F-,T+,T°‹ SP+,SPV25 3V3M AV33 +12V AVCC URST KEY Input VCR BUFFER IC 74HCT244 VFD_RXD VCC S_REQ IC510 RC901 REMOCON RECEIVER IC903 RESET IC 27MHz X-TAL R/Pr G/Y B/Pb IC604 MM1623XFBE VIDEO BUFFER VCC Y[1:6] +P8V VCC VCC PWRCTL VFD_SCK VFD_TXD M_REQ IC501 MT1379E DSP/MPEG MUTE RVCC SCLK,SDEN,SDATA PWMOUT2 ASPDIF 12V DV33 5V 5V2A -27VA VF- VF+ IC201 MT1336E RF RFON,RFOP,FEO,RFL,CSO TEO,BDO,RFRP,HTRC,V2P8 MA[00:10] BA0 DCLK DCKE CS#
PAGE 69
M/D PICK UP 3-78 LOAD+, LOAD- SL+, SL- SP+, SP- F+, F-, T+, T- LIMIT,TRIN,TROUT DVD: A,B,C,D, RFO CD: A,B,C,D, E, F,RFO V20 LD0 1, LDO 2, IOA MDI 1 IC202 LA6560 Motor Driver TRCLOSE STBY,V1P4 IC201 MT1336E RF Signal Processor FOSO,TRSO,FMSO DMSO,,TROPEN ADIN FEO,TEO,RFL,RFRP BDO,CSO,HTRC,V2P8 RFOP,RFON SDEN, SDATA, SCLK,PWMOUT2 IC302 GM72V161621 1M x 16bit SDRAM MA[0:10] DQM0 ,DQM1 WE#,CAS#,RAS# CS#,BA0, DCLK DCKE IC501 MT1379 DVDPLAYER COMBO CHIP 27MHz X-TAL RXD, TXD SCL, SDA PRD#,
PAGE 70
3-79 URST,S_REQ VFD_RXD FRONT MICOM Interface (FRONT BOARD) X501 27MHz IC501 (MPEG + DSP) MT1379 SCKO,TXDO,M-REQ Voltage level shift IC510 (74HCT244) VFD_SCK VFD_TXD M_REQ RF IC Interface DQM0,DQM1 SCL,SDA IC505 EEPROM A[0:19] PWR,PCE,PRD IC5A1 FLASH MEMORY (8 M ) MUTE,VSCK,VSDA ASDTA[0:3] ASTB,SCL,SDA ASPDIF ACLK,ALRCK,ABCK Y2(Y),Y3(Color) DQ[0:15] Y4(Y),Y5(Cb),Y6(Cr) ASPECT(16:9) DCLK,WE,CAS,RAS CS,DCKE,MA[0:10] FEO,CSO,TEO,ADIN,BDO SDATA,SDEN,SCLK,URST FMSO,DMSO V1P4,V2P8 TROPEN,TRSO
PAGE 71
MPEG MPEG 3-80 ADATA3 SDA SCL ACLK DAC RESET (Y/C) (R.G.B) / (Y.Pb.Pr ) IC401 AUDIO DAC (2CH) IC5C1 VIDEO 6dB Amp IC402 (OP Amp) LPF&Buffer SUPER VIDEO (Y/C) AUDIO ‘R’ AUDIO ‘R’ COMPONENT (R.G.B) / (Y.Pb.Pr ) CVBS INTERFACE 4.
PAGE 72
PAGE 73
CIRCUIT DIAGRAMS 1. SYSTEM CIRCUIT DIAGRAM No Power on No Video signal.
PAGE 74
2.
PAGE 75
3.
PAGE 76
4.
PAGE 77
• CIRCUIT VOLTAGE CHART IC201(MT1336E) PIN STOP PLAY 1 1.03 2.99 2 5.11 5.08 3 0 0 4 0 0 5 5.11 5.07 6 0 1.95 7 0 0 8 0 0 9 5.11 0 10 5.11 5.08 11 5.11 5.08 12 0 0 13 5.11 0 14 5.11 5.08 15 2.84 2.81 16 1.45 1.43 17 2.08 2.07 18 1.37 1.42 19 0.69 2.3 20 2.4 0 21 2.35 0 22 5.11 5.08 23 0 0 24 2.59 3.2 25 0.19 1.88 26 1.58 0 27 2.56 3.13 28 2 2.01 29 2 2.06 30 2.96 1.52 31 0 0 32 0.06 2.07 33 0.07 2.07 34 0 0 35 0 0 36 0 0 37 5.13 0 38 0 0 39 0 0 40 0 0 41 0 0 42 5.12 5.09 43 5.12 5.09 44 5.12 5.09 45 5.
PAGE 78
IC201(MT1336E) IC202(MOTOR) IC501(MT1379) PIN STOP PLAY STOP PLAY STOP 161 0 162 0 163 0 164 0 165 0 166 0 167 0 168 0 169 0 170 0 171 0 172 3.01 173 0 174 0 175 0 176 0 177 0 178 0 179 0 180 0 181 2.04 182 0 183 0 184 0 185 0 186 187 0 188 0 189 0 190 0 191 0.23 192 0 193 0 194 0 195 0 196 0 197 0 198 0 199 0 200 0 201 0 202 0 203 0 204 0 205 0 206 0 207 0 208 0 209 0 210 0 211 0 212 0 213 0 214 0 215 1.
PAGE 79
PRINTED CIRCUIT DIAGRAMS 1. MTR P.C.
PAGE 80
PAGE 81
SECTION 4 MECHANISM OF VCR PART CONTENTS DECK MECHANISM PARTS LOCATIONS • Top View . . . . . . . . . . . . . . . . . . . . . . . . .4-1 • Bottom View . . . . . . . . . . . . . . . . . . . . . . .4-1 DECK MECHANISM DISASSEMBLY 1. Drum Assembly . . . . . . . . . . . . . . . . . . .4-2 2. Top Plate Assembly . . . . . . . . . . . . . . . .4-4 3. CST Holder Assembly . . . . . . . . . . . . . .4-4 4. Door Opener . . . . . . . . . . . . . . . . . . . . .4-4 5. L/D Motor Bracket Assembly . . . . . . . . .4-4 6.
PAGE 82
DECK MECHANISM PARTS LOCATIONS • Top View Procedure Starting No.
PAGE 83
DECK MECHANISM DISASSEMBLY Stator (S2) (S2) (S3) Drum Motor (S3) Rotor Drum Sub Assembly (Fig. A-1-1) (A) FPC Drum Carbon Brush (S1) (S1) (S1) H2 H1 FPC Holder Fig. A-1 (Fig. B-1) 1. Drum Assembly (Fig. A-1-1) 1) Unplug the FPC Drum Connector. 2) Remove three Screws (S1) on the bottom side and separate the Drum assembly. 3) Unhook (H1), (H2) and separate the FPC Holder and FPC Cap. (See Fig. B-1) FPC Cap 1-1. Drum Motor 1) Remove two Screws (S2) and disassemble the Stator of the Drum Motor.
PAGE 84
DECK MECHANISM DISASSEMBLY Top Plate (Fig. A-2-1) (C) (B') (B) CST Holder Assembly (Fig. A-2-2) (E) F/L Arm Assembly (Fig. A-2-6) S/W Lever Assembly (Fig. A-2-7) (H8) (C1) L/D Motor Bracket Assembly S/W Spring Lever (Fig. A-2-4) (C') (D) (E') Door Opener (Fig. A-2-3) (H6) Chassis (A) F/L Gear Rack Assembly (Fig. A-2-5) Fig.
PAGE 85
DECK MECHANISM DISASSEMBLY 2. Top Plate Assembly (Fig. A-2-1) 1) Pull the (B) portion of the Top Plate back in direction of arrow and separate the right side of it. 2) Pull the (B’) portion of the Top Plate back in direction of arrow and separate the left side of it. (Tools: (-) Flat type screwdriver or any tool with a sharp or flat point.) 2) Unhook three Hooks (H3, H4, H5) on thr bottom side of the Chassis, lift up the L/M Bracket Assembly and disasemble the L/D Motor Bracket Assembly.
PAGE 86
DECK MECHANISM DISASSEMBLY Cleaner Arm Assembly (Fig. A-3-1) (A) (S4) A/C Head Base Assembly (A) (Fig. A-3-3) F/E Head (Fig. A-3-2) Chassis Fig. A-3 9. Cleaner Arm Assembly (Fig. A-3-1) 11. A/C Head Base Assembly (Fig. A-3-3) 1) Carefully pry tab "A" (see Fig.A-3-1) to clear the embossed tab on the chassis. Turn the Cleaner Arm Assembly clockwise and lift it from the chassis. 1) Remove the Screw (S4) and lift the A/C Head Base Assembly up. 10. F/E Head (Fig.
PAGE 87
DECK MECHANISM DISASSEMBLY Tension Arm Assembly (Fig. A-4-3) (H11) TB Spring T Brake Assembly (Fig. A-4-1) Tension Spring S Reel T Reel (Fig. A-4-4) (Fig. A-4-4) RS Spring RS Brake Assembly (Fig. A-4-2) (H12) (H9) (H10) Tension Base Chassis Fig. A-4 12. T Brake Assembly (Fig. A-4-1) NOTE 1) Unhook the TB Spring from the Hook (H9) of the Chassis. 2) LLift the T Brake Assembly up. Difference for Springs (Difference for Springs) TB Spring Color (Black) RS Spring Tension Spring 13.
PAGE 88
DECK MECHANISM DISASSEMBLY Lid Opener (Fig. A-5-2) (B) (B) Pinch Arm Assembly (Fig. A-5-3) (C) P4 Base Assembly T/up Lever (Fig. A-5-1) (H13) (Fig. A-5-4) (C) T/up Arm (H13) (Fig. A-5-5) (A) Chassis Fig. A-5 16. P4 Base Assembly (Fig. A-5-1) 1) Carefully pry the (A) portion of the P4 Base Assembly from the Embossing of the Chassis. 2) Turn the P4 Base Assembly counterclockwise and lift it up. 19. T/up (Fig. A-5-4)/ Arm T/up Lever (Fig.
PAGE 89
DECK MECHANISM DISASSEMBLY Capstan Belt (Fig. A-6-1) Capstan Motor (Fig. A-6-2) Washer(W1) D35 Clutch Assembly (Fig. A-6-4) (L1) (L1) Capstan Brake Assembly (Fig. A-6-5) F/R Lever (Fig. A-6-3) (L2) Chassis (S5) Fig. A-6 22. D35 Clutch assembly (Fig. A-6-4) 20. Capstan Belt (Fig. A-6-1)/ Capstan Motor (Fig. A-6-2) 1) Remove the Capstan Belt.. 2) Remove the three Screws (S5) from the bottom of the Chassis and lift the Capstan Motor up. 21. F/R Lever (Fig.
PAGE 90
DECK MECHANISM DISASSEMBLY (H14) Cam Gear Hole(B) Drive Gear Hole(A) Cam Gear (Fig. A-7-2) Sector Gear Washer (W2) (Fig. A-7-3) Slider Plate Drive Gear (Fig. A-7-4) (Fig. A-7-1) (A) Tension Lever (Fig. A-7-5) Spring Lever (L3) (Fig. A-7-6) Drive Gear Hole(C) Loading Base (H15) (H16) Chassis Fig. A-7 24. Drive Gear (Fig. A-7-1)/ Cam Gear (Fig. A-7-2) 26. Slider Plate (Fig. A-7-4) 1) Lift the Slider Plate up. 1) Remove the Washer (W2) and lift the Drive Gear up.
PAGE 91
DECK MECHANISM DISASSEMBLY P2 Gear Assembly Hole P3 Gear Assembly Hole P3 Gear Assembly (Fig. A-8-2) P2 Gear Assembly Spring Lever Boss (Fig. A-8-1) Sector Gear Hole(A) Slider Plate Hole(B) (B) (A) Chassis P3 Base Assembly (Fig. A-8-4) P2 Base Assembly (Fig. A-8-3) Fig. A-8 29. P2 Gear Assembly (Fig. A-8-1)/ P3 Gear Assembly (Fig. A-8-2)/ 30. P2 Base Assembly (Fig. A-8-3)/ P3 Base Assembly (Fig. A-8-4) 1) Lift the P2 Gear Assembly up. 2) Lift the P3 Gear Assembly up.
PAGE 92
DECK MECHANISM DISASSEMBLY Tension Base (S7) Loading Base (Fig. A-9-2) Idler Arm Jog Assembly (Fig. A-9-1) (A) (B) (Fig. A-9-3) (C) (D) Chassis Fig. A-9 31. Loading Base (Fig. A-9-1) 33. Idler Arm Jog Assembly (Fig. A-9-3) 1) Remove the Screw (S7). 2) Lift the Loading Base up. 1) Pinch (B) and (C), as shown in Fig. A-9-3. 2) Lift the Idler Arm Assembly up. NOTE 32. Tension Base (Fig. A-9-2) 1) Remove the (A) portion of the Tension Base from the Embossing of the Chassis.
PAGE 93
DECK MECHANISM DISASSEMBLY • Tools and Fixfures for Service SR K 1. Cassette Torque meter SRK-VHT-303 (Not SVC part) Part No: D00-D006 -V HT -S 2. Alignment tape Part No NTSC: DTN-001 PAL:DTN-0002 3. Torque gauge 3. 600g.Cm ATG 3. Part No:D00-D002 5. Post height adjusting driver Part No:DTL-0005 6. + Type driver (ø 5) 300 250 200 150 0 50 SR VID K CAS EO S TOR ETTE Q MET UE VHT ER -303 -T K- V HT0 SR 50 100 150 200 300 250 4.
PAGE 94
DECK MECHANISM ADJUSTMENT 1. Mechanism Alignment position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Equipment/ Fixture Test Conditions (Mechanism Condition) • Blank tape • Eject Mode (with Cassette ejected) 1) Turn the Power S/W on and eject the Cassette by pressing the Eject Button. 2) Remove the Top Cover and Top Plate Assembly, visually check if the Cam Gear Hole is aligned with the Chassis Hole as below Fig. C-2.
PAGE 95
DECK MECHANISM ADJUSTMENT Tape. Cover the Holes of the End Sensors at the both sides of the (L) Side Bracket and Door Bracket Assembly to prevent sensing light. Then The Deck Mechanism drives to the Stop Mode. In this case, The Deck Mechanism can accept inputs of each mode, however the Rewind and Review Operation can not be performed for more than a few seconds because the Take-up Reel Table is in the Stop Mode and can not detect the Reel Pulses. 2.
PAGE 96
DECK MECHANISM ADJUSTMENT 4.Guide Roller Height Adjustment Purpose: To regulate the Height of the Tape so that the Bottom of the Tape runs along the Tape Guide Line on the Lower Drum. 4-1. Preliminary Adjustment Test Equipment/ Fixture • Post Height Adjusting Driver Test Conditions (Mechanism Condition) • Play or Review Mode Adjustment Procedure Adjustment Point • Guide Roller Height Adjustment screws on the Supply and Take-Up Guide Rollers.
PAGE 97
DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose: To insure that the Tape's Audio and Control Tracks pass accurately over the head in exact alignment in both the Record and Playback Modes. 5-1. Preliminary Adjustment (Height and Tilt Adjustment) Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape.
PAGE 98
DECK MECHANISM ADJUSTMENT (2) If Folding or Curling is observed at the Top of it then slowly turn the Tilt Adjustment Screw (C) in the Counterclockwise direction. 5-2. Confirm that the Tape passes smoothly between the Take-up Guide and Pinch Roller (using a Mirror or the naked eye). 1) After completing Step 5-1. (Preliminary Adjustment), check that the Tape passes around the Take-up Guide and Pinch Roller without Folding or Curling at the Top or Bottom.
PAGE 99
DECK MECHANISM ADJUSTMENT 7. Adjustment after Replacing Drum Assembly (Video Heads) Purpose: To correct for shift in the Roller Guide and X value after replacing the Drum.
PAGE 100
MAINTENANCE/INSPECTION PROCEDURE 1 Check before starting repairs The following faults can be remedied by cleaning and oiling. Check the needed lubrication and the conditions of cleanliness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspection and maintenance. Check the following parts.
PAGE 101
MAINTENANCE/INSPECTION PROCEDURE 2. Required Maintenance The recording density of a VCR (VCP) is much higher than that of an audio tape recorder. VCR (VCP) components must be very precise, at tolerances of 1/1000mm, to ensure compatiblity with other VCRs. If any of these components are worn or dirty, the symptoms will be the same as if the part is defective. To ensure a good picture, periodic inspection and maintenance, including replacement of worn out parts and lubrication, is necessary. 3.
PAGE 102
MAINTENANCE/INSPECTION PROCEDURE 5-2) Greasing (1) Greasing guidelines Apply grease, with a cleaning patch. Do not use excess grease. It may come into contact with the tape path or drive system. If this occurs wipe off any excess and clean with cleaning patch using Isopropyl Alcohol. (2) Periodic greasing Grease specified locations every 5,000 hours.
PAGE 103
GEAR , F/R F/R Lever GEAR AY, P2 & P3 Boss Tension Base 4-22 CAM
PAGE 104
MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism A. 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 YES NO Is the Vcc. voltage of End sensor 5V? NO Check the syscon power. YES Replace End sensor. Is the voltage across IR LED between 0.8~1.5V? NO Replace LED. NO Check syscon circuit. B. No F/R Mode Is the present mode, F/R Mode? NO Is the mode SW assembled correctly (refer to Pages 4-14.
PAGE 105
MECHANISM TROUBLESHOOTING GUIDE C. AUTO STOP(PLAY/CUE/REV) Check aligment positions (page 414) Check Pinch spring. In Play/Cue/Rev is the pinch roller in contact with the capstan shaft. NO Is the output of DFG, DPG OK? YES Are there T/up and supply reel pulses. Replace Drum Motor. NO YES NO Check Servo, Syscon. YES Check the Syscon, µ-COM. Replace Reel Sensor. D. NO CASSETTE LOADING Insert the cassette. YES Does the lever Assembly S/W work normally. NO Check CST Holder Assembly.
PAGE 106
MECHANISM TROUBLESHOOTING GUIDE E. In PB mode Tape presence not sensed. Is the Pinch Roller attached to the Capstan Motor Shaft? NO Check Alignment positions (page 4-14) YES Does the T/Up Reel turn? NO NO Is the Belt ok? YES Replace the Belt. YES Check the clutch and the Idler Assembly. Does the Capstan Motor turn? YES Does the Drum Motor turn? NO YES Is the Voltage supplied to the Capstan Motor Vcc1,Vcc2 each? NO Check Servo, Power.
PAGE 107
MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism A. Cassette can not inserted Does the Lever Assembly Switch work? NO Is the Lever Assembly Switch Spring damaged or omitted? YES YES Does the CST IN Switch work normally? Is the Vcc of Main P.C.Board 5V? YES Replace or add the Lever Assembly Switch Spring. NO Replace CST IN Switch. YES Check syscon circuit. NO Is the voltage between cassette switch and GND on Main P.C.Board 5V?? YES NO Check power circuit.
PAGE 108
MECHANISM TROUBLESHOOTING GUIDE C. Cassette will not load Does the CST insert? YES Does the Opener Lid work? YES NO Replace the Lid Opener. Does the F/L Gear Rack work? YES NO Replace the F/L Rear Rack. Does the Door Opener work? YES NO Does the F/L Arm Assembly work? YES Is the Door opener assembled correctly? NO Does the L/D Motor work? YES Replace the F/L Arm Assembly. NO Does the Cassette Holder Assembly move the F/L Arm Assembly? YES Check the power of L/D Motor.
PAGE 109
EXPLODED VIEWS 1.
PAGE 110
EXPLODED VIEWS 2.
PAGE 111
EXPLODED VIEWS 3.
PAGE 112
MEMO
PAGE 113
SECTION 5 MECHANISM OF DVD PART CONTENTS DECK MECHANISM PARTS LOCATIONS • Top View..................................................5-1 • Top View(without Tray Disc) .................5-1 • Bottom View ...........................................5-1 5. Frame Assembly Up/Down ..............5-4 6. Belt Loading......................................5-4 7. Gear Pulley .......................................5-4 8. Gear Loading ....................................5-4 9. Guide Up/Down................................
PAGE 114
DECK MECHANISM PARTS LOCATION • Top View (With Tray) Procedure Parts Fixing Type Starting No.
PAGE 115
DECK MECHANISM DISASSEMBLY Fig. 5-1 Fig. 5-2 1. Holder Clamp (Fig. 5-1) 2. Tray Disc (Fig. 5-2) 1) Release 2 Screws(S1). 2) Unhook 2 Locking Tabs(L1). 3) Lift up the Holder Clamp and then separate it from the Base Main. 1-1. Clamp Assembly Disc 1) Place the Clamp Assembly Disc as Fig. (A) 2) Lift up the Clamp Assembly Disc in direction of arrow(A). 3) Separate the Clamp Assembly Disc from the Holder Clamp. 1-1-1.
PAGE 116
DECK MECHANISM DISASSEMBLY Fig. 5-3 3. Base Assembly Sled (Fig. 5-3) 3-3. Gear Assembly Rack 1) Release the Scerw(S3) 1) Release 4 Screw(S2). 2) Disconnect the FFC Connector(C1) 3-1. Gear Assembly Feed 3-2. Gear Middle 4. Rubber Rear (Fig.
PAGE 117
DECK MECHANISM DISASSEMBLY Fig. 5-4 5. Frame Assembly Up/Down (Fig. 5-4) Note Put the Base Main face down(Bottom Side) 1) Release the Screw(S4) 2) Unlock the Locking Tab(L3) in direction of arrow and then lift up the Frame Assembly Up/Down to separate it from the Base Main. Note • When reassembling move the Guide Up/Down in direction of arrow(C) until it is positioned as Fig.(C). • When reassembling insert (A) portion of the Frame Assembly Up/Down in the (B) portion of the Guide Up/Down as Fig.(B) 6.
PAGE 118
PAGE 119
EXPLODED VIEWS 1.
PAGE 120
PAGE 121
NOTES) NOTES) NOTES) NOTES) NOTES) If you want to purchase Flash memory, you must order "IC5A1A" Warning Parts that are shaded are critical With respect to risk of fire or electricial shock. SECTION 6 REPLACEMENT PARTS LIST MODEL : XBV323(VC641MK) HA1UZZ(ZENITH) S AL LOCA. NO. LG PART NO. *** INDIVIDUAL PARTS *** DESCRIPTION NSP : Not avallable as service parts.
PAGE 122
S AL LOCA. NO. LG PART NO.
PAGE 123
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION CAPACITOR,ELECTROLYTIC 1.0M SRA/SS50V M FM5 TP(5) 0CH1223K516 CAPA,CHIP CERAMIC M/L H.D F/S 0.022U 50V K B 2.0X1.2 R/TP 0CE1054K638 CAPACITOR,ELECTROLYTIC 1.0M SRA/SS50V M FM5 TP(5) C346 0CE4764F638 CAPACITOR,ELECTROLYTIC 47M SRA/SS 16V M FM5 TP(5) C347 0CH1473K516 CHIP CAPA CERAMIC M/L H.D F/S 0.047U 50V K X7R 2.0X1.2 R/TP C348 0CH1473K516 CHIP CAPA CERAMIC M/L H.D F/S 0.047U 50V K X7R 2.0X1.
PAGE 124
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION CAPACITOR,CHIP[CERAMIC M/L HD 1UF 16V Z Y5V(F) 2012 R/TP C590 0CH1105F946 C592 0CE1064F638 CAPACITOR,ELECTROLYTIC 10M SRA 16V M FM5 TP(5) C593 0CH4471K416 CAPA,CHIP CERAMIC M/L T.C F/S 470P 50V J 2.0*1.25 R/TP C594 0CH1104K946 CAPACITOR,FIXED CERAMIC(TEMP.C 0.1UF 2012 50V 80%,-20% Y5V(F) C595 0CH4120K416 CHIP CAPA CERAMIC M/L T.C F/S 12P 50V NPO 2.0X1.25 R/TP C596 0CH4180K416 CHIP CAPA CERAMIC M/L T.C F/S 18P 50V J C 2.0X1.
PAGE 125
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION C844 0CH1472K516 CAPA,CHIP CERAMIC M/L H.D F/S 4700P 50V K B 2.0*1.25 R/TP C845 0CH1103K516 CHIP CAPA CERAMIC M/L H.D F/S 0.01U 50V K B 2.0X1.25 R/TP C846 0CE4754K638 CAPACITOR,FIXED ELECTROLYTIC 4.
PAGE 126
S AL LOCA. NO. LG PART NO.
PAGE 127
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R340 0RH1501D622 RESISTOR,METAL GLAZED(CHIP) 1.5K OHM 1 / 10 W 2012 5.00% D R341 0RH1000D622 RESISTOR,METAL GLAZED(CHIP) 100 OHM 1 / 10 W 2012 5.00% D R342 0RH4700D622 RESISTOR,METAL GLAZED(CHIP) 470 OHM 1 / 10 W 2012 5.00% D R344 0RH1000D622 RESISTOR,METAL GLAZED(CHIP) 100 OHM 1 / 10 W 2012 5.00% D R345 0RH0000D622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 10 W 2012 5.
PAGE 128
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R558 0RH2202D622 RESISTOR,METAL GLAZED(CHIP) 22K OHM 1 / 10 W 2012 5.00% D R563 0RH4701D622 RESISTOR,METAL GLAZED(CHIP) 4.7K OHM 1 / 10 W 2012 5.00% D R564 0RH2702D622 RESISTOR,METAL GLAZED(CHIP) 27K OHM 1 / 10 W 2012 5.00% D R566 0RH2701D622 RESISTOR,METAL GLAZED(CHIP) 2.7K OHM 1 / 10 W 2012 5.00% D R569 0RH4701D622 RESISTOR,METAL GLAZED(CHIP) 4.7K OHM 1 / 10 W 2012 5.00% D R570 0RH4701D622 RESISTOR,METAL GLAZED(CHIP) 4.
PAGE 129
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R814 0RH7501D622 RESISTOR,METAL GLAZED(CHIP) 7.5K OHM 1 / 10 W 2012 5.00% D R817 0RH1502D622 RESISTOR,METAL GLAZED(CHIP) 15K OHM 1 / 10 W 2012 5.00% D R818 0RH4701D622 RESISTOR,METAL GLAZED(CHIP) 4.7K OHM 1 / 10 W 2012 5.00% D R821 0RH1002D622 RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 10 W 2012 5.00% D R822 0RH1003D622 RESISTOR,METAL GLAZED(CHIP) 100K OHM 1 / 10 W 2012 5.
PAGE 130
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R616 0RD3301F608 RESISTOR,FIXED CARBON FILM 3.3K OHM 1/6 W 5% TA26 REMARKS R617 0RD4701F608 RESISTOR,FIXED CARBON FILM 4.7K OHM 1/6 W 5% TA26 R621 0RD2701F608 RESISTOR,FIXED CARBON FILM 2.7K OHM 1/6 W 5% TA26 R622 0RD1501F608 RESISTOR,FIXED CARBON FILM 1.
PAGE 131
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION CAPACITOR CE 1000UF/10V SHL(10*12.5)T/P C131 624-082H C132 624-085D CAPACITOR CE 47UF/50V KME (SMPS) C133 0CQ1042K409 CAPACITOR,FIXED FILM 0.1UF S 50V J PE TP C151 0CE4754K638 CAPACITOR,FIXED ELECTROLYTIC 4.7UF SRA,SS 50V 20% FM5 TP 5 C152 0CE4754K638 CAPACITOR,FIXED ELECTROLYTIC 4.
PAGE 132
S AL LOCA. NO. LG PART NO.
PAGE 133
S AL LOCA. NO. LG PART NO.
PAGE 134
S AL LOCA. NO. LG PART NO. DESCRIPTION *** SUB PWB(PCB) ASSEMBLY(DVD) *** SPECIFICATION A46A 6885R-2202C SUB PWB(PCB) ASSEMBLY 55530045140560 000000C0 081810 C201 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C202 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C203 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.
PAGE 135
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION C297 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C298 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C401 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C402 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.
PAGE 136
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION C534 0CH4330K412 CAPACITOR,CHIP[CERAMIC M/L TC 33P 50V J COG 1.6X0.8 R/TP C535 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C536 0CH1102K562 CAPACITOR,FIXED CERAMIC(Temp.c 1000PF 50V 10% X7R(X) 1608 R/T C537 0CH1102K562 CAPACITOR,FIXED CERAMIC(Temp.c 1000PF 50V 10% X7R(X) 1608 R/T C538 0CH1102K562 CAPACITOR,FIXED CERAMIC(Temp.
PAGE 137
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION C605 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C606 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.
PAGE 138
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R205 0RH0272C622 RESISTOR,METAL GLAZED(CHIP) 27 OHM 1 / 16 W 1608 5.00% D R206 0RH0272C622 RESISTOR,METAL GLAZED(CHIP) 27 OHM 1 / 16 W 1608 5.00% D R207 0RH0000C622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R208 0RH0000C622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R209 0RH0000C622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.
PAGE 139
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R419 0RH8201C622 RESISTOR,METAL GLAZED(CHIP) 8.2K OHM 1 / 16 W 1608 5.00% D R420 0RH1801C622 RESISTOR,METAL GLAZED(CHIP) 1.8K OHM 1 / 16 W 1608 5.00% D R421 0RH3300C622 RESISTOR,METAL GLAZED(CHIP) 330 OHM 1 / 16 W 1608 5.00% D R422 0RH3300C622 RESISTOR,METAL GLAZED(CHIP) 330 OHM 1 / 16 W 1608 5.00% D R423 0RH1001C622 RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.
PAGE 140
S AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION R5C3 0RH1500C422 RESISTOR,METAL GLAZED(CHIP) 150 OHM 1 / 16 W 1608 1.00% D R5C4 0RH1500C422 RESISTOR,METAL GLAZED(CHIP) 150 OHM 1 / 16 W 1608 1.00% D R5C5 0RH1500C422 RESISTOR,METAL GLAZED(CHIP) 150 OHM 1 / 16 W 1608 1.00% D R5C6 0RH1500C422 RESISTOR,METAL GLAZED(CHIP) 150 OHM 1 / 16 W 1608 1.00% D R5C9 0RH0000C622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.