Zenith XBR413 Manual
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Zenith XBR413 Manual

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SECTION 1
SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
............. 1-2
SERVICING PRECAUTIONS
.................................................................................................. 1-3
SPECIFICATIONS
...................................................................................................................... 1-4
1-1

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Summary of Contents for Zenith XBR413

  • Page 1 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ..... 1-2 SERVICING PRECAUTIONS ....................1-3 SPECIFICATIONS ........................1-4...
  • Page 2 When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.
  • Page 3 SERVICING PRECAUTIONS CAUTION: Before servicing the VCR + DVD RECODER cov- Electrostatically Sensitive (ES) Devices ered by this service data and its supplements and addends, Some semiconductor (solid state) devices can be damaged read and follow the SAFETY PRECAUTIONS. NOTE: if easily by static electricity.
  • Page 4 SPECIFICATIONS General Power requirements AC 120V, 60 Hz Power consumption Dimensions (approx.) 430 X 83.5 X 360 mm Mass (approx.) 6.8 kg Operating temperature 5 °C ~ 40 °C Standard Condition -20 °C ~ -60 °C Signal system NTSC VDR PART Read Disc Format DVD Disc : DVD Video Specification Book.
  • Page 5 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Packing Accessory Section ....................2-3...
  • Page 6 EXPLODED VIEWS 1. Cabinet and Main Frame Section...
  • Page 7 2. Packing Accessory Section OPTIONAL PARTS 810 CABLE ASS'Y RF CABLE(COAXIAL) PLUG ASS'Y 1WAY BATTERY PLUG ASS'Y 2WAY REMOCON INSTRUCTION ASSEMBLY PACKING PACKING BOX CARTON...

  • Page 8: Table Of Contents

    SECTION 3 ELECTRICAL CONTENTS OVERALL WIRING DIAGRAM • WAVEFORMS ............3-86 ......3-2 • CIRCUIT VOLTAGE CHART ........3-90 PRINTED CIRCUIT DIAGRAMS ......3-94 VCR PART 1. VCR P.C.BOARD(TOP VIEW) .......3-94 2. POWER P.C.BOARD (BOTTOM VIEW)....3-96 ELECTRICAL ADJUSTMENT PROCEDURES ............3-3 RL-01A LOADER PART VCR ELECTRICAL TROUBLESHOOTING GUIDE ELECTRICAL TROUBLESHOOTING ................3-4...

  • Page 9: Overall Wiring Diagram

    OVERALL WIRING DIAGRAM...

  • Page 10: Vcr Part

    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 ±...

  • Page 11: Vcr Electrical Troubleshooting Guide

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) CIRCUIT Is the D127 NO 5.3VA. Replace the D127 normal? Replace the F101 Is the D128 Is the F101 normal? Replace the D128 (Use the same Fuse) normal? Is the BD101 Power Line of Main Replace the BD101 Normal? PCB(VCR) is short...
  • Page 12 VCR ELECTRICAL TROUBLESHOOTING GUIDE (To Cap, Drum Motor ) No 12VA No REG 12V Is the Vcc(13V) Check or Replace Is the Vcc(13V) sup- Check or Replace supplied to C130? the D126 plied to Q126Collector? the D126 Is the D132 Is the Vcc(33V) sup- Check the ‘PWR CTL Replace the D132...
  • Page 13 VCR ELECTRICAL TROUBLESHOOTING GUIDE No 28V (HSR) Check or Replace Is the Vcc(30V) supplied to Q120 Collector? the D129 Check or Replace Is the Vcc(30V) sup- plied to Q120 Base? the ZD153 Check the ‘HSR “H” Is the Vcc(33V) supplied to Q121 Collector? signal from µ-com Check or Replace the...

  • Page 14: System/Key Circuit

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 2. SYSTEM/KEY CIRCUIT (1) AUTO STOP Auto Stop Check the Drum Motor Does the SW30 waveform appear at IC501 Pin18? signal. Do T/UP Reel Pulses Do the T-UP Reel Pulses Does 5V appear at the appear at the point appear at IC501 Pin80? RS501? between R556 and R536?

  • Page 15: Servo Circuit

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. SERVO CIRCUIT (1) Unstable Video in PB MODE Does the Noise level of the screen change periodically? Readjust the height of the Do the CTL pulses appear Is the height adjustment of CTL Head. at IC501 Pin97? the CTL Head accurate? Confirm the CFG Check Deck Motor.
  • Page 16 VCR ELECTRICAL TROUBLESHOOTING GUIDE 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? Check the PMC01 and the Capstan Does the PWM signal appear at IC501 Pin77? Motor Ass’y.

  • Page 17: Osd Circuit

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 2. SERVO CIRCUIT (4) Keys do not work Keys do not work Is 5V applied to IC501 Refer to “SMPS 5.3VA Pin78? Trouble Shooting”. Does FLD change when Replace the defective a function button is switches. pressed? 4.

  • Page 18: Y/C Circuit

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 5. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Does the Video signal Check VDR Video Input appear at IC301 (PMD02 Pin 5), Tuner Video Pins28, 30, 32? Input (TU701 Pin24), Line Video Input (IC602 Pins 1, 3, 5, 7), respectively.
  • Page 19 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 Check the line of the REG 5V Line. (Power Circuit) Pins23, 44, 45, 52, 68, 77? Is the Y/C Bus siganl Refer to ‘SYSTEM Y/C applied to IC301 Pins53,...
  • Page 20 VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, Is 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 X301 (3.58MHz) appear at IC301...
  • Page 21 VCR ELECTRICAL TROUBLESHOOTING GUIDE 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?

  • Page 22: Tuner/If Circuit

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 6. Tuner/IF CIRCUIT (1) No Picture on the TV screen No picture on the TV screen Does the Video signal Is +33V applied to TU701 Check 33V line. appear at TU701 Pin16. Pin14? Is +5V applied to TU701 Check 5V line.
  • Page 23 VCR ELECTRICAL TROUBLESHOOTING GUIDE (B) No Sound No Sound. Check the Vcc of IC701 Pins1, 11, 19, Check 5.2V Line. 22, 33. Check the Tuner SiF signal at IC701 Check the Tuner SIF of TU701 Pin22. Pin2. Check the oscillator of IC701 Pins5, 6. Replace X751 Check the IIC Clock and Data at IC701 Check the Audio of IC701 Pins30, 31.

  • Page 24: Hi-Fi Circuit

    VCR ELECTRICAL TROUBLESHOOTING GUIDE 7. Hi-Fi CIRCUIT (1) No Sound(EE Mode) No Sound. Check the TU Audio of IC801 Check the IC701 Pins30, 31. Pins2, 3. Check the DVD Audio of IC801 Check the VDR MODULE. (PMD02 Pins23, 25). Pins4, 5. Check the AV1 Audio of IC801 Check the RCA Jack.
  • Page 25 VCR ELECTRICAL TROUBLESHOOTING GUIDE 3. Y/C CIRCUIT (2) Hi-Fi Playback PB mode No Sound. Check the Vcc of IC801 Check Power 5.2V, 12V. (Pins34, 40) Check the Hi-Fi Selection switch. Check IC501 Pin19 (IC801 Pin41) and the Tape quality. (A.H/SW) Is the RF Envelope at IC801 Pin44 over 2Vp-p? Check IC801 Pin42(Data),...
  • Page 26 Hi-Fi REC. It can’t be recorded Hi-Fi Audio signal. Check Vcc of IC801.(Pins34, 40) Check Power 5V, 12V. Check ports of µ-COM. Check IC801 Pin42(Data), Pin43(CLOCK). (IC501 pins 71, 72) Check Audio input signal of IC801 Do Audio signals appear at IC801 Pins2, 3(TU.A.), 4, 5(AV1), 6, 7(VDR.A.), Pins16, 17? 10, 11(AV2).

  • Page 27: Block Diagrams

    BLOCK DIAGRAMS 1. POWER(SMPS) BLOCK DIAGRAM RECTIFIER & T101 TH01 SMOOTING BLOCK BD101 TO VCR (D128,C133,R130) RECTIFIER & (P101) SMOOTING BLOCK 5.3VA (D127,C131,L125,C132) RECTIFIER & SNUBBER 5.0V SMOOTING BLOCK BLOCK HSR S/W Block C103 (D126,C136,L122,C130) (D101,C105 Cap Vcc (Q120,ZD153,C135, C106,R103) RECTIFIER &...

  • Page 28: Tuner/Mtz Block Diagram

    2. TUNER/MTZ BLOCK DIAGRAM (PMP01-6) TU701 TUNER 5.0V (PMP01-2) IC701 MSP3407 AVCP IC TU.V.OUT (IC301) IIC CLK TU.A.L IIC DATA TU.A.R V.IN CH S/W IIC CLK IIC DATA FROM/TO VCR'H' MICOM FROM VDR A.L (IC501) JACK A.IN Q702 PART FROM/TO MICOM VDR A.R (IC501)

  • Page 29: Y/C Block Diagram

    3. Y/C BLOCK DIAGRAM (PB Mode) (REC Mode) 55 54 53 51 50 49 48 47 55 54 53 320FH SERIAL VX01 DECODER AUDIO C-ROT MUTE RF-SW HA SW CLAMP CLAMP EP REC EP PB 'A' CLAMP IC302 EP PB 'B' CLAMP TU/LINE1 MAIN...
  • Page 30 TUNER IC801 IC301 LA72670M LA71206M NORMAL AUDIO A. OUT (L) A. OUT (R) IC301 IC801 LA71206M LA72670M A. OUT (L) R/P HEAD A. OUT (R) N.A.IN OUTPUT SELECTOR DATA (System) CLOCK From u-COM TUNER IC801 IC301 LA72670M LA71206M NORMAL AUDIO A.

  • Page 31: Jack Block Diagram

    5. JACK BLOCK DIAGRAM VIDEO SW IC To Hi-Fi To.AVCP IC601 To.AVCP JK601 A/V JACK From AVCP AV1 Video in AV1 Audio in PMD02 To TUNER (L/R) 1) Front Video IC601 MOD VIDEO VIDEO AMP IC 3) Mixed Video 5) VDR CVBS Video Out 7) VCR Video 9) Y (Super)

  • Page 32: Hi-Fi Block Diagram

    6. Hi-Fi BLOCK DIAGRAM Hi-Fi/ Block 36 35 AUDIO INPUT BLOCK Hi-Fi IC801 Block • TUNER • DVD • AV1 • AV2 Audio Out (To.VDR) NORMAL A.OUT (TO VDR) NORMAL A.IN (FROM AVCP) 3-30 3-31...

  • Page 33: System Block Diagram

    7. SYSTEM BLOCK DIAGRAM TO/FROM DECK TO/FROM AVCP 5.3VA MODE S/W MS501 95 94 9 18 13 16 87 12 CV IN I-Limit COMP IN MODE S1 MODE S1 MODE S2 REC 'H' MODE S2 MODE S3 MODE S4 C.ROT MODE S3 A.MUTE'H' DISPLAY...

  • Page 34: Circuit Diagrams

    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.

  • Page 35: Tu/If Circuit Diagram

    2. TU/IF CIRCUIT DIAGRAM EE MODE(VIDEO) TU MODE(AUDIO) 3-36 3-37...

  • Page 36: A/V Circuit Diagram

    3. A/V CIRCUIT DIAGRAM IC301 doesn’t operate. IC301 Pins 53, 54, 55 are defective. PB COLOR Signal disappear. X301 is defective. PB COLOR Signal does not appear. IC301 Pin 57 is defective. Auto Tracking has failed. IC301 Pin 59 is defective. EE, PB Screen doesn’t appear.

  • Page 37: Jack Circuit Diagram

    4. JACK CIRCUIT DIAGRAM 3-40 3-41...

  • Page 38: Hi-Fi Circuit Diagram

    5. Hi-Fi CIRCUIT DIAGRAM Hi Fi Audio is not appear Hi Fi Audio is not appear IC801 Pins 42, 43 are defective. 44 Pin is defective. 3-42 3-43...

  • Page 39: System Circuit Diagram

    6. SYSTEM CIRCUIT DIAGRAM Deck will not operate. MS501 is defective. µ-COM is unstable. Q501, Q503 are defective. VCR will not operate. IC505 is defective. µ-COM will not operate. X502 is defective. CLOCK SETTING will not operate. X501 is defective. Auto stop occures.

  • Page 40: Timer Circuit Diagram

    7. TIMER CIRCUIT DIAGRAM R/C will not working RC601 is defective. Digitron display is unstable IC601 is defective. 3-46 3-47...

  • Page 41: Waveforms

    • WAVEFORMS * IC301 Waveform * IC501 Waveform 280 Acqs Stop : 250KS/s 299 Acqs 27 Acqs Stop : 10.0KS/s Stop : 10.0KS/s 18 Acqs Trigger Position: 12% Stop : 10.0KS/s 1.00 V M 5.00ms 3.04 V 1.00 V M5.00ms 3.04 V 1.00 V M 200µs...

  • Page 42: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE PLAY Location PLAY PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. I C 3 0 1 I C 7 0 1 0.68 0.93 Q301...

  • Page 43: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. VCR P.C.BOARD 3-52 3-53...

  • Page 44: Power P.c.board

    2. POWER P.C.BOARD 3. TIMER P.C.BOARD LOCATION GUIDE 3-54 3-55...

  • Page 45: Key P.c.board

    4. KEY P.C.BOARD 5. JACK P.C.BOARD 3-56 3-57...

  • Page 47: Vdr Part

    VDR PART VDR ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) CIRCUIT No 3.7VA Is the F101 Replace the F101 Normal? (Use the same Fuse) Is the BD101 Replace the BD101 Normal? Is the TH01 Replace the TH01 Normal? Is Vcc (11V - 18V) Is the D104 supplied to IC101 Pin3? normal?
  • Page 48 VDR ELECTRICAL TROUBLESHOOTING GUIDE (To Cap, Drum Motor ) No 3.3V / 2.5V No 5.0V Is there about 3.7V Check or Replace Is there about 5.5V Check or Replace at the IC154 pin1? the D122 at the IC151 pin1? the D124 Is there about 3.3V ~ Check the ‘DVD PWR CTL Is there about 3.3V~...
  • Page 49 VDR ELECTRICAL TROUBLESHOOTING GUIDE When playing DISC, No OPTICAL / no audio output DIGITAL output Check IC2078 power IC7601-1 : HIGH IC7401-1 Check VCR PART DAC RESET status signal normal and other circuits Check R110, R109, IC7601-8, 9 I C sig- Check FFC Cable nal normal Signal flow...
  • Page 50 VDR ELECTRICAL TROUBLESHOOTING GUIDE No External No External Input 1 audio Input 2 audio Audio output even <when playing DISC, Audio output even <when playing DISC, When playing DISC no audio output> check When playing DISC no audio output> check Check IC2076 power and PN7401-6, 7 : PN5401 - 4~6...
  • Page 51 VDR ELECTRICAL TROUBLESHOOTING GUIDE No Component video signal when playing DISC Component : No Y Signal Component : No Pb Signal Component : No Pr Signal R609, C613 R608, C612 R607, C611 IC610 – 10 IC610 – 12 IC610 – 14 Check input Check input Check input...
  • Page 52 No COMPOSIT / S-VIDEO signal when playing DISC COMPOSIT : No Signal S-VIDEO : No Y Signal S-VIDEO : No C Signal R606, C610 R602, C602 R601, C601 IC610 – 4 IC610 – 6 IC610 – 2 Check input Check input Check input C650 C651...
  • Page 53 No TV, External Input video signal No : TV signal No : AV1 signal No : AV2 signal No : S-JACK signal TV 701-17 IC7711 – 1, 3, 8 Check signal And IC602 - 1 IC602 - 3 check circuit IC602 –...
  • Page 54 SDRAM VCR Board 8M WordX4 CVBS_OUT VCR Board CPLD VO_D[0:15] V_ENC Y/C OUT EPM3064 SAA7104 A_L_IN Y/Pb/Pr OUT A_ADC AI_D0 CS5333 A_R_IN A_DAC A_OUT(R/L) V_VCR_IN AO_D0 CS4392 V_DEC V_MIX_OUT VI_D[2:9] SAA7115 VDR_CLK, VDR_DIN, VDR_DOUT_VDR_ENB V2_IN SIO_SPI_Ö U-COM A2_IN AO_IEC958 AO_IEC958 Front Board A2_IN DMN8600...
  • Page 55 3V3D 3.3VA FLASH FLASH NJM2274 NJM2274 VDDA SAA7104 SAA7104 74ALVT16373 74ALVT16373 3.3V E5_VPAD DMN8600 VDDD 3.3V E5_AVDD 74ABT245 3.3V E5_VDDX 74LVT16245 74LVT16245 1.8V VDD0 3.3V E5_VDDREF 74ABT541 SAA7115 SAA7115 1.8V E5_VCORE 2.5V 74ALVT827 74ALVT827 VSSA0 1.8V E5_VDLL MC33202 MC33202 2.5V SSTL2_VDD 74LVT273 74LVT273...
  • Page 56 A_SEL1 A_SEL1 Control Signals Connector Control & Selection PN7401 Logic A_SEL2 A_SEL2 AI_MCLKO L_IN A_L_IN ADC_INL Audio ADC AI_SCLK OP AMP Connector CS5333 MC33202 PN7601 AI_FSYNC IC6905 IC6904 R_IN A_R_IN ADC_INR AI_TO_E5 E5 BGA308 DMN8600 IC1099 AO_IEC958 AO_IEC958 Connector PN7401 AO_D0 DAC_AUD_L-_OUT A_L_OUT...
  • Page 57 SDRAM_DQS[2:3] SDRAM_DQM[2:3] E5_ALE SDRAM_DQ[16:31] BA[6:21] HD[0:15] IC2085 74LVT16373 A_SEL1 A_SEL2 BD[8:15] PWDN_H IC2076 INT_PROG IC1095 IC1093 74LVT273 SCL_88_SEL D_CONT1 /REG1_WE IC2084 D_CONT2 D_CONT3 74LVT16245 IC1099 DMN8600 /RST_7114 BD[0:7] SDRAM_A[0:13] E5_DIR /RST_7104 IC2078 /E5_OEL /RST_SMSC CLKE,RAS,CAS,WE] 74LVT273 /RST_ PHY E5_MA[1:5] BA[1:5] E5_MA[22:26] /REG2_WE /RST_ADC...
  • Page 58 VI_D[0:7] IC1099 HD[0:15] IC4009 V_VCR_IN DMN8600 VI_CLK0 SAA7115 Video Dec. 24.576MHz SCL/SDA FSVGC,VSVGC,HSVGC IC4003 PD[0:7] IC4002 SAA7104 VO_CLK CPLD Video Enc. EPM3064 CVBS Connector /PIXCLKIX PN7601 SCL/SDA Control Register IC4003 Logic SAA7104 Video Enc. D_CONT2 D_CONT3 D_CTRL3 INT_PROG D_CTRL2 INT_PROG D_CTRL1...

  • Page 59: Circuit Diagrams

    CIRCUIT DIAGRAMS 1. E5_BGA, POWER, UART2 CIRCUIT DIAGRAM 3-70 3-71...

  • Page 60: Ddr_Sdram, Flash Circuit Diagram

    2. DDR_SDRAM, FLASH CIRCUIT DIAGRAM 3-72 3-73...

  • Page 61: Rst. Control/Status_Reg/Atapi

    3. RST. CONTROL/STATUS_REG/ATAPI, HOST_CPLD/LATCH CIRCUIT DIAGRAM 3-74 3-75...

  • Page 62: 4, Ethernet_Connector

    4. 1394, ETHERNET_CONNECTOR CIRCUIT DIAGRAM 3-76 3-77...

  • Page 63: Video_In/Out Circuit Diagram

    5. VIDEO_IN/OUT CIRCUIT DIAGRAM 3-78 3-79...

  • Page 64: Audio In/Out, Non-Std_Video

    6. AUDIO IN/OUT, NON-STD_VIDEO CIRCUIT DIAGRAM 3-80 3-81...

  • Page 65: Audio Dac, Video_Y/Mixer

    7. AUDIO DAC, VIDEO_Y/MIXER CIRCUIT DIAGRAM 3-82 3-83...

  • Page 66: Front A/V, 1934 Jack Circuit Diagram

    8. FRONT A/V, 1934 JACK CIRCUIT DIAGRAM 3-84 3-85...

  • Page 67: Waveforms

    • WAVEFORMS X102 IC4009 IC4009 PN7601 IC4004 IC4002 13.5MHz PIN32 PIN31 PIN15 PINS20, 36 PIN37 B_Pb_OUT VO_CLK VO_CLK IC4009 IC4009 IC4009 PN7401 PN6905 PN7601 PIN94 PIN91 PIN6 PIN1 PIN2 PIN16 VI_CLK0 VI_SYNC0 24.576MHz AO_IEC958 ADC_MCLK DAC_MCLK IC4002 PN7601 PN7601 PN6905 PN7601 PN6905 PIN22...
  • Page 68 IC4002 IC4009 PN7401 PIN38 PIN90 PIN 12 VO_D0 VI_D0 VDR_CLK PN7401 PN7401 PN7401 PIN 13 PIN 14 PIN 15 VDR_DIN VDR_DOUT VDR_ENB 3-88 3-89...

  • Page 69: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. I C 6 9 0 5 IC6905 0.11 0.23 0.03 0.03 0.03 3.1* 3.0* 3.22...
  • Page 70 • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. 0.02 1.53 1.53 1.52 0.78 3.18 3.18 0.16 3.18 3.18 3.14 2.91 3.05 1.22 1.22...

  • Page 71: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD(TOP VIEW) 3-94 3-95...
  • Page 72 2. MAIN P.C.BOARD (BOTTOM VIEW) 3-96 3-97...

  • Page 73: Rl-01A Loader Part

    RL-01A LOADER PART ELECTRICAL TROUBLESHOOTING GUIDE Reset or Power Check. Check it after connecting the power cable only for NO Reset or Power ON. •Check the power(5V,12V)short. Are the pin 41, 44 of CN201 •Check the PC power cable. +12V, +5V respectively after the power •Repair the PC power supply.
  • Page 74 System Check Load tray without inserting disc. Does tray operate normally? Go to “Tray operating is abnormal” Does pick-up move to inside? Go to “Sled operating is abnormal” Go to “Focus Actuator operating is Does pick-up lens move abnormal” up/down? Does laser turn on? Go to “Laser operating is abnormal”...
  • Page 75 Tray operating is abnormal Tray open doesn ’t work. Is the Input voltage 0V at IC302 •Check the connection of IC302 pin 60. pin 60 when push the •Replace the EJECT SW. EJECT SW? •Check the connection of IC103 pin 19. Is there tray •Replace the IC103.
  • Page 76 Sled operating is abnormal Is there sled control signal output? Replace the IC103 (IC103 pin 8,9) Is there •Check the connection of IC105 pin 28,29. sled drive signal input? •Replace the IC105. (IC105 pin 28,29) •Check the R132,R133. Is there Is DRV-CTRL1 sled drive voltage output? signal “H”?
  • Page 77 Spindle operating is abnormal Is there Is there spindle control DSP spindle control signal input? output(IC202 pin 145)? (IC105 pin 24) •Check the R147,R149. •Replace the IC106 Replace the IC202. Is there Is there spindle drive voltage output? SFG signal input? (IC105 pin 9,11,18) (IC302 pin 28) Replace the Spindle Motor...
  • Page 78 Focus Servo is unstable Is FE signal output normal in Focusing Replace the IC107. Up/Down? (IC107 pin 86) Is FDRV signal output normal in Focusing •Check the R158. Up/Down? •Replace the IC107. (IC202 pin 146) Go to “Focus Actuator operating is abnormal” Focus Actuator operating is abnormal.
  • Page 79 Track Servo is unstable Is TE signal Is pick-up output normal in focusing (E, F, G, H)output normal? ON and tracking OFF? (CN101 pin 5, 8, 9, 12) (IC107 pin 82) Replace the IC107. •Check the pick-up FFC. •Replace the pick-up. Is TE signal input normal in focusing Check the connection between...
  • Page 80 Recognition Fail Case 1: CD-ROM Fail Check pick-up read power Go to “LD CHECK”. is 0.9~1.3mW? Does focus servo Go to “Focus Servo is unstable”. operate normally? Check pick-up RF signal IC107(Pin115) •Check the pick-up FFC and CN101. RFO(TP115)is •Replace the pick-up unit. 500~1000mVpp? Check RFEQO waveform Replace the IC107...
  • Page 81 Recognition Fail Case 2:DVD Fail Check pick-up read power Go to “LD CHECK”. was 0.9~1.1mW? Is IC302 pin 46(LDEN-DVD)level Replace the IC302. was about 3.3V? Is there RF signal at CN101 Replace the pick-up. pin 13,14. Is there RF signal Replace the IC107 at IC107 pin 99.
  • Page 82 LD CHECK (Laser operating is abnormal) Execute “B.Check ALPC Parameters” of “How to use Test Tool” Execute “C.Laser Power Setup”of Is ALPC parameters “How to use Test Tool” valid? Execute “D.Laser Inspection” of “How to use Test Tool” Check reference voltage. OFF level VRDC level &FPD VWDC1 level &FPD...
  • Page 83 CD/DVD ? Execute “E.ALPC Test for AS”of “How Execute “E.ALPC Test for AS”of “How to Test Tool”(Select “DVD VRDC Loop” to Test Tool”(Select “CD VRDC Loop” and trigger) and trigger) Check the input of LDEN-CD. Check the input of LDEN-DVD. (pin 33 of CN101 :‘H ’) (pin 17 of CN101 :‘H ’) Check the input of VRDC.
  • Page 84 Execute “E.ALPC Test for AS”of “How Execute “E.ALPC Test for AS”of “How to Test Tool”(Select “DVD-R Rec to Test Tool”(Select “DVD-RW Rec Mode”and trigger) Mode”and trigger) Check the input of LDEN-DVD. Check the input of LDEN-DVD. (pin 17 of CN101 : ‘H’) (pin 17 of CN101 : ‘H’) Check the input of VWDC.
  • Page 85 In case of writing fail. Normal Case Check the media Check disc label. DVD ±R/RW? Does the disc Remove the dust,fingerprint and have any dust,scratch, if the disc has long width scratch, fingerprint …? change it. Is the write tool supported by Use LG bundle software.
  • Page 86 Writing Part Check Load tray with DVD ±R/RW disc. Run and write with writing tool. Does the Do the IC302 blink of LED1,LED2 occurs pin 58,59 output toggle during writing? signals during writing? • Check the connection between IC302 pin 58,59 and LED. •...
  • Page 87 TILT --MUTE OSCEN,LDEN-CD,LDEN-DVD IC104 TILT-DRV TILT(+/-) BA5962FVM TEMP TMPIN IC102 NJM3404AV RECD,MONI2,TZC,OPCTRG,FE,FPD SDATAI Disc 5V, 3.3V , 2 .5V , 2 5V 3.3V , 2 .5V RFN, RFP CP,SCLK,SDATAO /EPRCS SPINDLE SCLK MOTOR VWDC IC107 IC302 SDATA0 /URD,/UWR,ASTB,/CS-DSP,/RST-DSP M/ D VRDC, VW DC2 Driver Driver...

  • Page 88: Major Ic Internal Block Diagram And Pin Description

    2. MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION IC101 (µPC3320) : RF Signal Processor for CD/DVD Pin Assignment GND0 RECD SWRF1 SWRF2 MONI3 GND7 GND1 SPP2 SBAD PPALL VCC2 TECIN µPC3320 REFI2 REFO1 VCC7 RF IC MONI2 WOBBLE CWHP GND2 CWAGC VCC33...
  • Page 89 MONI 3PIN CREG CDAC HOLD Control Logic RF Signal REF1 REF2 RFEQ Circuit Control REFO1 REFI2 RF Signal RFAC HOLD MIRR/ Control CDEF2 CDEF DEFECT CMIRR A input MIRR C input B input (MIRR/RC/BCA) DPD Circuit D input MIRR RFAC (COMP/EQ/PC) FE Singal RC detect...
  • Page 90 Pin description Pin Name Type Description GND0 Analog GND SWRF1 OUTPUT WRF signal sampling & hold [S/H] signal output. SWRF1 OUTPUT WRF signal sampling & hold [S/H] signal output. INPUT RF differerential signal[+] input. INPUT RF differerential signal[-] input. GND1 Analog GND INPUT Main beam signal [A1] input.
  • Page 91 Pin Name Type Description VCC4 Analog power. OUTPUT Wobble circuit [A+D] signal output. OUTPUT Wobble circuit [B+C] signal output. GND4 Analog GND CDAC OUTPUT DAC reference voltage output. VCC5 Digital power. BCIN INPUT [B+C] signal input. ADIN INPUT [A+D] signal input. RCBH1A RLPP circuit bottom hold condenser connecting port.
  • Page 92 Pin Name Type Description OUTPUT Tracking error signal output. OUTPUT Tracking error signal output for Servo. PPALL OUTPUT Main side push-pull signal output. SBAD OUTPUT Sub beam signal output [ (E+F+G+H) signal]. SPP2 Sub beam signal output [ (F+G)-(E+H) signal]. OUTPUT Focus error signal.
  • Page 93 3. MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION IC201(µPD63620) : Encoder, Decoder & DSP Signal Processor Pin Assignment DGND PULLUP DASP HCS1 HCS0 HDA2 HDAD PDI AG DVDD33 HDA1 HIOCS16 HINTRQ SLED DVDD33 DGND DVDD25 HDMACK REFOUT IORDY SDRV DIOR TDRV DIOW...
  • Page 94 Audio Output WDPLL & LPU & ENC816 AUDAU Wobble Audio I/F Decoder SDRAM DPLL 8/ 16 SV Control Control Enc oder SGU & DCU Timing ADIP Decoder Generator Encode Control Syndrome/ Syndrome/ Generator Buffer ATIP ATIP Decoder WRCLK Error WRCH Correction Host I/F Host...
  • Page 95 Pin description Pin No. Pin Name Type Description DGND Digital GND PULLUP Pull-up resistance connecting port.[5V or 3.3V] DASO 5V_tolerant Pull-up Drive active slave presesnt signal.[open/drain] HCS1 5V_tolerant Host interface chip, pull-up selection input. HCS0 5V_tolerant Host interface chip, pull-up selection input. HDA2 5V_tolerant Host interface chip, address signal input.
  • Page 96 Pin No. Pin Name Type Description DGND 5V_tolerant Pull-up Host interface data bus.[within slave resistance HDD4 HDD3 5V_tolerant Pull-up Host interface data bus.[within slave resistance] HDD3 HDD11 5V_tolerant Pull-up Host interface data bus.[within slave resistance] HDD12 HDD4 5V_tolerant Pull-up Host interface data bus.[within slave resistance HDD2 HDD7 5V_tolerant...
  • Page 97 Pin No. Pin Name Type Description DGND Digital GND.(Buffer. Memory. Block) MD13 Pull-up Buffer memory , Interface data bus. Pull-up Buffer memory , Interface data bus. MD12 Pull-up Buffer memory , Interface data bus. Pull-up Buffer memory , Interface data bus. DGND Digital GND.
  • Page 98 Pin No. Pin Name Type Description DGND Buffer memory , Interface data bus. Buffer memory , Interface data bus. Buffer memory , Interface data bus. Buffer memory , Interface data bus. Buffer memory , Interface data bus. DGND Digital GND Buffer memory , Interface data bus Buffer memory , Interface data bus.
  • Page 99 Pin No. Pin Name Type Description MIRRBCA Pull-up RF AMP PC3320 RF equalizer automatic follow-up clock output. EQCK1 Pull-up RF AMP PC3320 RF equalizer fixed clock output. SCFCK RF AMP PC3320 RF equalizer automatic follow-up clock output. WLDON Laser, Driver write laser control signal. ROPC2 Running OPC,sample hold signal.
  • Page 100 Pin No. Pin Name Type Description 5V_tolerant Access control signal output from Local CPU to SDRAM. DVDD33 Digital power[3.3V] 5V_tolerant Local CPU Adress bus. 5V_tolerant Local CPU Adress bus. 5V_tolerant Local CPU Adress bus. 5V_tolerant Local CPU Adress bus. 5V_tolerant Local CPU Adress bus.
  • Page 101 Pin No. Pin Name Type Description DVDD33 Digital power[3.3V] EFPULSE OFF pluse output[write laser/driver control signal]. PKPULSE1 Peak pluse output[write laser/driver control signal]. PKPULSE2 Peak pluse output[write laser/driver control signal]. HDDREV Host interface data bus selector.[H: general, L: reverse] AGND Analog GND[WWAPLL] AVDD Analog power 2.5V [WWAPLL]...

  • Page 102: Ic302(Upd76F0047):Micom

    4. IC302(uPD76f0047):MICOM Pin Assignment 3-127...
  • Page 103 Block Diagram INTC INTP0-INTP7 Instruction Flash queue 768KB TIP00-TIP50 32bit Timer/Counter CS0 - CS3 barrel Multipuller TIP01-TIP51 (16bit Timer) shifter (16 x 16 -> 32) AD0-AD15 x 6ch A0 - A21 System TOP01-TOP51 24KB register WR0-WR1 Interval Timer General ASTB (16bit Timer) register WAIT...

  • Page 104: Pin Description

    Pin description Pin No. Pin Name Type Des cription AVREF0 A/D CONVERTER REFERENCE VOLTAGE INPUT AVSS A/D,D/A CONVERTER POTENTIAL STEP0 STEPPTING MOTOR CONTROL SIGNAL STEP1 STEPPTING MOTOR CONTROL SIGNAL AVREF1 D/A CONVERTER REFERENCE VOLTAGE INPUT TILT-MUTE TILT DRIVE MUTE SIGNAL SBRK EXTERNAL MEMORY ADDRESS BUS FLMD0...
  • Page 105 Pin No. Pin Name Type Des cription REGISTER ADDRESS OUPUT /DACS CHIP SELECTOR /BPRCS EEPROM COMM UNICATON LINE TEST MOD0 TEST MOD1 (RESERVED) (RESERVED) LED ENABLE LINE LED ENABLE LINE /EJECT-KEY TRAY OPE N LINE URDY ACCESS CONTROL SIGNAL INPUT FRON CPU TO SDRAM (RESERVED) /OPEN-SW OPEN S/W INPUT...

  • Page 106: Waveforms

    WAVEFORMS 1. POWER & RESET Signal 12 V(CN201 PIN41) 5 V(CN201 PIN 44) /HRST(IC203 PIN 3) /RST(IC203 PIN2) POWER IN 2. Main Clock1 for IC202 (16.9MHz) 12 V(CN201 PIN41) 5 V(CN201 PIN 44) /HRST(IC203 PIN 3) /RST(IC203 PIN2) POWER IN 3-131...

  • Page 107: Main Clock2 For Ic302 (20Mhz)

    3. Main Clock2 for IC302 (20MHz) X301(IC302 PIN 13 GND LEVEL 4. SDRAM Clock MCLK(IC201 PIN 35) GND LEVEL 3-132...

  • Page 108: Tray Open/Close Signal 1

    5. TRAY OPEN/CLOSE SIGNAL 1 /EJECT-KEY (SW 302 PIN1) TRAY-CTRL(REF 1.25V) 8.4V 5.8V (IC105 PIN26) TRAY+(CN104 PIN 1) 8.4V 5.8V TRAY-(CN104 PIN 2) OPEN CLOSE 6. TRAY OPEN/CLOSE SIGNAL 2 /EJECT-KEY (SW 302 PIN1) TRAY-CTRL (IC105 PIN26) /OPEN-SW (SW301 PIN 2) /LOAD-SW (SW301 PIN 1) OPEN...

  • Page 109: Sled Move Signal 1

    7. SLED MOVE SIGNAL 1 1.7V 1.25V 0.9V STEP0 1.6V 1.25V (IC103 PIN8) 0.9V STEP1 (IC103 PIN9) A+(CN102 PIN 2) A-CN102 PIN 3) ZOOM 8. SLED MOVE SIGNAL 2 STEP0 (IC103 PIN8) STEP1 (IC103 PIN9) A+(CN102 PIN 2) A-CN102 PIN 3) 3-134...

  • Page 110: Focus Search Signal

    9. FOCUS SEARCH SIGNAL FDRV(REF 1.25V) (IC105 PIN53) F+(REF 2.5V) (CN101 PIN 35) F-(REF 2.5V) (CN101 PIN 36) 10. LASER TURN ON SIGNAL F+(REF 2.5V) (CN101 PIN 35) LDEN-DVD(CN101 PIN17) VRDC(CN101 PIN 27) 3-135...

  • Page 111: Disc Type Judgement Waveform

    11. DISC TYPE JUDGEMENT WAVEFORM (CD SERIES) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) ZOOM 12. DISC TYPE JUDGEMENT WAVEFORM (CD&CD-R) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) 3-136...

  • Page 112: Disc Type Judgement Waveform

    13. DISC TYPE JUDGEMENT WAVEFORM (CD-RW) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) 14. DISC TYPE JUDGEMENT WAVEFORM (DVD SERIES) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) ZOOM 3-137...

  • Page 113: Disc Type Judgement Waveform

    15. DISC TYPE JUDGEMENT WAVEFORM (DVD_SINGLE&R) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) 16. DISC TYPE JUDGEMENT WAVEFORM (DVD _DUAL) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) 3-138...

  • Page 114: Spindle Waveform1

    17. DISC TYPE JUDGEMENT WAVEFORM (DVDRW) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) 18. SPINDLE WAVEFORM1 2.25V 1.25V SPIN (REF 1.25V) (IC105 PIN 24) 1.25V SRVC (REF 1.25V) (IC105 PIN 27) SFG(IC105 PIN21) 3-139...

  • Page 115: Spindle Waveform2

    19. SPINDLE WAVEFORM2 U(IC105 PIN9) V(IC105 PIN11) W(IC105 PIN18) W(IC105 PIN18) 20. FOCUS ON SIGNAL(CD) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) T+(REF 2.5V) (CN101 PIN 37) TE(REF 1.5V) (IC107 PIN82) ZOOM 3-140...

  • Page 116: Focus On Signal(Dvd)

    21. FOCUS ON SIGNAL(CD) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) T+(REF 2.5V) (CN101 PIN 37) TE(REF 1.5V) (IC107 PIN82) 22. FOCUS ON SIGNAL(DVD) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) T+(REF 2.5V) (CN101 PIN 37) TE(REF 1.5V) (IC107 PIN82) ZOOM...

  • Page 117: Track Off Signal(Cd)

    23. FOCUS ON SIGNAL (DVD) F+(REF 2.5V) (CN101 PIN 35) FE(REF 1.5V) (IC107 PIN86) T+(REF 2.5V) (CN101 PIN 37) TE(REF 1.5V) (IC107 PIN82) 24. TRACK OFF SIGNAL(CD) TE(REF 1.5V) (IC107 PIN82) TZC(IC107 PIN79) MIRRBCA (IC107 PIN92) 3-142...

  • Page 118: Track Off Signal(Dvd)

    25. TRACK OFF SIGNAL(DVD) TE(REF 1.5V) (IC107 PIN82) TZC(IC107 PIN79) MIRRBCA (IC107 PIN92) 26. Tilt Driver signal(Disc reading) 1.32V TILTDRV(IC104 PIN4) 1.25V 2.3V 2.35V TILT+(CN101 PIN39) 2.3V 2.25V TILT-(CN101 PIN40) 3-143...

  • Page 119: Rf Waveform(Dvd)

    27. RF WAVEFORM(DVD) 1.9V RFP(CN101 PIN13) 1.5V 2.5V RFO(IC107 PIN 115) 0.8V 2.0V RFI(IC107 PIN 99) 1.0V 28. RF WAVEFORM(CD) 2.30V RFP(CN101 PIN13) 1.65V 1.95V RFO(IC107 PIN 115) 1.15V 1.85V RFI(IC107 PIN 99) 1.05V 3-144...

  • Page 120: Wobble(Dvd-R/Rw)_Reading

    29. WOBBLE(DVD-R/RW)_READING AWOBBLE(IC107 PIN76) WOBBLE(IC107 PIN 75) 30. WOBBLE(DVD+R/RW)_READING&WRITING =>X1 SPEED AWOBBLE(IC107 PIN76) WOBBLE(IC107 PIN 75) 3-145...

  • Page 121: Ld Enable(Dvd)

    31. LD Enable(DVD) 3.3V LDENDVD(CN101 PIN 17) 3.3V LDENCD(CN101 PIN 33) 32. LD Enable(CD) LDENDVD(CN101 PIN 17) 3.3V LDENCD(CN101 PIN 33) 3.3V 3-146...

  • Page 122: Laser Power(Reading)_Dvd+Rw

    33. Laser Power(reading)_DVD+RW VRDC(IC107 PIN 31) About 360mv VWDC1(IC107 PIN 34) VWDC2(IC107 PIN 36) OPECTRG(IC107 PIN 55) 34. Laser Power(Erase)_DVD+RW VRDC(IC107 PIN 31) About 440mv VWDC1(IC107 PIN 34) VWDC2(IC107 PIN 36) OPECTRG(IC107 PIN 55) 3-147...

  • Page 123: Laser Power(Writing)_Initial State

    35. Laser Power(Writing)_initial state VRDC(IC107 PIN 31) 340m VWDC1(IC107 PIN 34) About 440mv VWDC2(IC107 PIN 36) OPECTRG(IC107 PIN 55) 36. Laser Power(Writing)_Processing VRDC(IC107 PIN 31) VWDC1(IC107 PIN 34) VWDC2(IC107 PIN 36) 3-148...

  • Page 125: Circuit Diagrams

    CIRCUIT DIAGRAMS 1. RF CIRCUIT DIAGRAM Title-drv is not good. (Level-shift IC) PD Gai Control IC (DRIVE IC) Focus & Spindle & Tracking is not good(Op-Amp) No sled & No Title (DA-converter) Analog-Switch Rd/Wr Toggle) SPINDLE DVD IR/RW(Blank Disc Recognition) SLED LASER POWER(ALPC) TRACKING...

  • Page 126: Dsp Circuit Diagram

    2. DSP CIRCUIT DIAGRAM (RESET IC) (SDRAM) (DSP IC) No Power, No operation 3-151 3-152...

  • Page 127: Μ-Com Circuit Diagram

    3. µ-COM CIRCUIT DIAGRAM Voltage Error Voltage Error EEPRON 1) Sled & filt drive is not good 2) Laser power drive is not good 3) Loader operation drive is not good (µ-COM) 3-153 3-154...

  • Page 128: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD LOCATION GUIDE 3-155 3-156...
  • Page 129 SECTION 5 MECHANISM OF LOADER PART(RL-01A) Deck Mechanism Section(RL-01A) A01A 019A...
  • Page 131 SECTION 4 MECHANISM OF VCR PART CONTENTS 1. Mechanism Alignment Position Check .4-13 DECK MECHANISM PARTS 2. Preparation for Adjustment ..4-14 LOCATIONS 3. Checking Torque ....4-14 •...

  • Page 132: Deck Mechanism Parts Locations

    DECK MECHANISM PARTS LOCATIONS • Top View Procedure Fig- Part Fixing Type Starting 1 Drum Assembly 3 Screw 2 Top Plate Assembly 2 Hook 3 CST Holder Assembly Chassis Hole 4 Door Opener Chassis Hole 5 L/D Motor Bracket 3 Hook Assembly 2,3,4 6 F/L Gear Rack...
  • Page 133 DECK MECHANISM DISASSEMBLY Stator (S2) (S2) (S3) Drum Motor (S3) Rotor Drum Sub Assembly (Fig. A-1-1) FPC Drum Carbon Brush (S1) (S1) (S1) 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 sep- arate the Drum assembly.

  • Page 134: Cst Holder Assembly

    DECK MECHANISM DISASSEMBLY (Fig. A-2-1) Top Plate (B') (Fig. A-2-2) CST Holder Assembly (Fig. A-2-6) F/L Arm Assembly (C1) (Fig. A-2-7) S/W Lever Assembly (H8) L/D Motor Bracket Assembly S/W Spring Lever (Fig. A-2-4) (C') (E') Door Opener (Fig. A-2-3) (H6) Chassis F/L Gear Rack Assembly...
  • Page 135 DECK MECHANISM DISASSEMBLY 2. Top Plate Assembly (Fig. A-2-1) 2) Unhook three Hooks (H3, H4, H5) on thr bottom side of the Chassis, lift up the L/M Bracket Assembly and disas- 1) Pull the (B) portion of the Top Plate back in direction of emble the L/D Motor Bracket Assembly.

  • Page 136: Cleaner Arm Assembly

    DECK MECHANISM DISASSEMBLY Cleaner Arm Assembly (Fig. A-3-1) (S4) A/C Head Base Assembly (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 1) Remove the Screw (S4) and lift the A/C Head Base embossed tab on the chassis.

  • Page 137: T Brake Assembly

    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.

  • Page 138: P4 Base Assembly

    DECK MECHANISM DISASSEMBLY Lid Opener (Fig. A-5-2) Pinch Arm Assembly (Fig. A-5-3) P4 Base Assembly T/up Lever (H13) (Fig. A-5-1) (Fig. A-5-4) (H13) T/up Arm (Fig. A-5-5) Chassis Fig. A-5 16. P4 Base Assembly (Fig. A-5-1) 19. T/up (Fig. A-5-4)/ 1) Carefully pry the (A) portion of the P4 Base Assembly Arm T/up Lever (Fig.

  • Page 139: Capstan Belt /Capstan Motor

    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 20. Capstan Belt (Fig. A-6-1)/ 22. D35 Clutch assembly (Fig. A-6-4) Capstan Motor (Fig.

  • Page 140: Drive Gear / Cam Gear

    DECK MECHANISM DISASSEMBLY (H14) Cam Gear Hole(B) Cam Gear (Fig. A-7-2) Drive Gear Hole(A) Sector Gear Washer (W2) (Fig. A-7-3) Slider Plate Drive Gear (Fig. A-7-4) (Fig. A-7-1) Tension Lever (Fig. A-7-5) Spring Lever (L3) (Fig. A-7-6) Drive Gear Hole(C) Loading Base (H15) (H16)

  • Page 141: P2 Gear Assembly

    DECK MECHANISM DISASSEMBLY P2 Gear Assembly Hole P3 Gear Assembly Hole P3 Gear Assembly (Fig. A-8-2) P2 Gear Assembly (Fig. A-8-1) Sector Gear Hole(A) Spring Lever Boss Slider Plate Hole(B) Chassis P3 Base Assembly (Fig. A-8-4) P2 Base Assembly (Fig. A-8-3) Fig.

  • Page 142: Loading Base

    DECK MECHANISM DISASSEMBLY (S7) Tension Base Loading Base (Fig. A-9-2) Idler Arm Jog Assembly (Fig. A-9-1) (Fig. A-9-3) 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). 1) Pinch (B) and (C), as shown in Fig. A-9-3. 2) Lift the Loading Base up.
  • Page 143 DECK MECHANISM DISASSEMBLY • Tools and Fixfures for Service 1. Cassette Torque meter 2. Alignment tape 3. Torque gauge SRK-VHT-303 (Not SVC part) Parts No NTSC: DTN-001 600g.Cm ATG Parts No: D00-D006 PAL:DTN-0002 Parts No:D00-D002 4. Torque gauge adaptor 5. Post height adjusting driver 6.

  • Page 144: Deck Mechanism Adjustment

    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 Conditions (Mechanism Test Equipment/ Fixture Check Point Condition) • Mechanism and Mode Switch Position • Blank tape •...

  • Page 145: Preparation For Adjustment

    DECK MECHANISM ADJUSTMENT 2. Preparation for Adjustment (To set the Tape. Cover the Holes of the End Sensors at the both sides of Deck Mechanism to the Loading state the (L) Side Bracket and Door Bracket Assembly to pre- without inserting a Cassette Tape). vent a light leak.

  • Page 146: Guide Roller Height Adjustment

    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 Test Conditions (Mechanism Condition) Adjustment Point •...

  • Page 147: Audio/Control (A/C) Head Adjustment

    DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks 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. Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point...

  • Page 148: Precise Adjustment (Azimuth Adjustment)

    DECK MECHANISM ADJUSTMENT 5-2. Confirm that the Tape passes smoothly (2) If Folding or Curling is observed at the Top of it then slowly turn the Tilt Adjustment Screw (C) in the between the Take-up Guide and Pinch Roller Counterclockwise direction. (using a Mirror or the naked eye).

  • Page 149: Adjustment After Replacing Drum Assembly (Video Heads)

    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. Test Conditions Test Equipment/ Fixture Connection Point Adjustment Points (Mechanism Condition) • CH-1: PB RF Envelope •...

  • Page 150: Maintenance/Inspection Procedure

    MAINTENANCE/INSPECTION PROCEDURE 1 Check before starting repairs The following faults can be remedied by cleaning and oil- ing. 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 inspec- tion and maintenance.

  • Page 151: Required Maintenance

    MAINTENANCE/INSPECTION PROCEDURE 4. Supplies Required for Inspection and 2. Required Maintenance Maintence The recording density of a VCR (VCP) is much higher than that of an audio tape recorder. VCR (VCP) components must (1) Grease: Kanto G-311G (Blue) or equivalent be very precise, at tolerances of 1/1000mm, to ensure com- (2) Isopropyl Alcohol or equivalent patiblity with other VCRs.

  • Page 152: Greasing

    MAINTENANCE/INSPECTION PROCEDURE (2) Periodic greasing 5-2) Greasing Grease specified locations every 5,000 hours. (1) Greasing guidelines Apply grease, with a cleaning patch. Do not use excess 1) Loading Path Inside & Top side 5) Tension Lever Groove grease. It may come into contact with the tape path or 2) Shaft 6) D33 Clutch Assembly Shaft drive system.
  • Page 153 GEAR , F/R GEAR AY, P2 & P3 Boss Tension Base F/R Lever 4-22...

  • Page 154: Mechanism Troubleshooting Guide

    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.
  • Page 155 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.
  • Page 156 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.

  • Page 157: Front Loading Mechanism

    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.
  • Page 158 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.
  • Page 159 100A 100B 054A...
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  • Page 162 MEMO...

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