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PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION

4-21

5-2) Grease Applications

(1) Grease Application Method

Apply grease by using a cloth swab or brush. Care must
be exercised so that excess quantity should not be
used. If the excessive quantity is applied, wipe it with
the gauze soaked in alcohol (Isopropyl Alcohol).

NOTE: POSITION OF GREASE APPLICATION

(2) Regular Grease Application

Apply grease to the designated application position
every 500 hour.

(1) Inner Side Surface and Top

Surface of Loading Path

(2) Stable Adhesion Part of Base

P2, P3

(3) Arm Pinch Shaft

(4) Gear Wheel Shaft
(5) Reel S. T. Shaft

(1) (2) (3) (4): KG-684G
(Green)
(5): PL-433 (Yellow)

Cam Part
(PL-433.Yellow)

Gear Part
(PL-433.Yellow)

Boss Part Side Wall
(PL-433.Yellow)

Gear Part Side Application
(PL-433.Yellow)

Cam Part Side Application
(KG-684G.Green)

Gear Sector

Gear Cam

Base Loading

Gear Drive

Inner Surface of

Guide Rail

(KG-684G.Green)

Chassis (L)

Chassis (R)

Gear Part

(1) Inner Side Surface and Top

Surface of Loading Path

(2) Stable Adhesion Part of Base

P2, P3 Coil

(3) Gear Cam Shaft
(4) Gear Drive Shaft
(5) Clutch Shaft Groove

(6) Guide Part on the Plate Slider

Side Wall (Left)

(7) Guide Part on the Plate Slider

Side Wall (Right)
(1) (2) (3) (4) (5) (6) (7): KG-
684G (Green)

Chassis (TOP)

Chassis (Bottom)

Cam Part
(KG-684G , GREEN)

Cam Part

(KG-684G , GREEN)

Gear Rack F/L

Lever, Brake Driving Cam Part

Side Wall Guide Part

Lever F/R Driving Part

Side Wall Guide Part

Lever, Spring Driving Part

Lever Tension Driving Cam Part

Gear Sector Driving Part

Plate Slider

Содержание V9120QW1M

Страница 1: ...DVD VCR SERVICE MANUAL MODEL V9120W V9120QW1M CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL V9120W V9120QW1M SERVICE MANUAL ...

Страница 2: ...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 REPLACEMENT PARTS LIST ...

Страница 3: ... 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 SERVICE INFORMATION FOR EEPROM IC SETTING VCR 1 5 SERVICE INFORMATION FOR EEPROM DVD 1 6 SPECIFICATIONS 1 7 ...

Страница 4: ...AYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC OPERA TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC TURE TUBE OR HIGH VOLTAGE SUPPLY AND UNDER CERTAIN CIR CUMSTANCES MAY PRODUCE RADIATION IN EXCESS OF DESIR ABLE LEVELS 2 ONLY FACTORY SPECIFIED C R T ANODE CONNECTORS MUST BE USED DEGAUSSING SHIELDS ALSO SERVE AS X RAY SHIELD...

Страница 5: ...ng Metal pan els Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques sho...

Страница 6: ...KEY FOR MORE THAN 5 SECONDS 3 PG ADJUST 1 Payback the SP standard tape 2 Press the OK key on the Remote controller and the PLAY key on the Front Panel the same time then it goes in to Tracking initial mode 3 Repeat the above step No 2 then it finishes the PG adjusting automatically 4 Stop the playback then it goes out to PG adjusting mode after mony the PG data 4 BUYER SELECTION Font ejection key ...

Страница 7: ...e changes Press pause key once Change will be applied when power OFF ON OPTION NTSC model doesn t have VCR option and use DVD option B F as VCR option only DVD exist PAL model has another separate VCR option Both VCR and DVD exist MODEL V9120W NAME HEX OPT 1 41 OPT 2 55 OPT 3 00 OPT 4 C7 OPT 5 13 OPT 6 05 OPT 7 F4 OPT 8 00 OPT 9 00 OPT A 00 OPT B 80 OPT C 00 OPT D 00 OPT E 00 OPT F 00 OPT G 00 DET...

Страница 8: ...s than 0 008 Dynamic range More than 100 dB DVD More than 95 dB CD INPUTS VCR Audio 6 0dBm more than 47 kohms RCA Video 1 0 Vp p 75 ohms unbalanced OUTPUTS DVD VIDEO OUT 1 Vp p 75 ohms sync negative S VIDEO OUT Y 1 Vp p 75 ohms negative sync Mini Din 4 pin x 1 C 0 3 Vp p 75 ohms COMPONENT VIDEO OUT Y 1 Vp p 75 ohms negative sync RCA jack x 1 Progressive Scan Pb Pr 0 7 Vp p 75 ohms RCA jack x 2 RGB...

Страница 9: ...2 1 SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 Cabinet and Main Frame Section 2 2 2 Packing Accessory Section 2 3 ...

Страница 10: ...ODED VIEWS 1 Cabinet and Main Frame Section A00 A26 A50 A44 260 A47 A46 274 463 261 261 452 261 261 330 265 465 469 300 323 250 463 463 463 469 324 288 471 463 470 457 A43 285 286 283 284 280 A 5 4 3 2 1 B C D ...

Страница 11: ...n BATTERY 808 BAG 804 PACKING OPTIONAL PARTS 803 806 INSTRUCTION ASSEMBLY CABLE COAXIAL 810 CABLE ASS Y RF 801 REMOCON 900 BOX CARTON 802 PACKING 803 811 812 PLUG ASS Y 1WAY YELLOW PLUG ASS Y 2WAY RED WHITE 813 PLUG ASS Y 1WAY BLACK ...

Страница 12: ...Y P C BOARD 3 54 5 TIMER P C BOARD 3 54 DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 3 56 1 SYSTEM OPERATION FLOW 3 56 2 SYSTEM TEST FLOW 3 57 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 3 63 1 SYSTEM 27MHZ CLOCK RESET FLASH R W SIGNAL 3 63 2 SDRAM CLOCK 3 65 3 TRAY OPEN CLOSE SIGNAL 3 65 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION 3 66 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION 3 66 ...

Страница 13: ... 5 3VA 5V M5V 5VT 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 PMD01 PMD02 Vcc HF RF DVD_LD DVD_PD VOL DVD GND VC_INPUT Vcc HF F E A D C B F T T F Vcc GND CD_LD CD_PD VOL CD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 PMD03 SPM SPM FM FM LM LM SW OPEN SW CLOSE GND SW LEAD IN GND 1 2 3 4 5 6 7 8 9 10 11 1 2 3...

Страница 14: ...stance time difference which is from the selected A B Head point of the H SW TP signal to the starting point of the vertical synchronized signal to 6 5H 0 5H 412µs 1H 63µs PG Adjustment Method a 1 Payback the SP standard tape b 2 Press the OK key on the Remote controller and the PLAY key on the Front Panel the same time for more than 5seconds then it goes in to Tracking initial mode c 3 Repeat the...

Страница 15: ...UIT No 5 3VA Replace the FR101 Use the same ICW Is the FR101 Normal Is the R101 Normal Is the BD101 Normal NO NO NO NO NO NO NO NO NO Replace the BD101 Replace the R101 Is the D102 normal Replace the D125 Replace the IC103 YES YES YES YES YES YES YES Is Vcc 9V 18V sup plied to IC101 Pin2 Are the D125 normal Is there about 2 5V at the IC103 Pin1 Is the D123 normal Is the D124 Normal 1 No 5 3VA ...

Страница 16: ...s the Q162 Base H NO NO Check the PWR CTL H signal from µ com YES YES YES 2 No 5 0V_D No 5 0V_T Check or Replace the D125 Check the PWR CTL H signal from µ com Is the Vcc 5 3V sup plied to Q163 Emittor Is the Q162 Base H Check or Replace the Q163 NO NO YES YES YES 3 No 5 0V_T No 3 3V Check or Replace the D123 Is there about 3 8V at the IC131 pin1 Is there about 3 3V 5V at the IC131 pin4 NO NO Chec...

Страница 17: ...here about 13V at the IC141 Pin 1 Is there about 3 3V 5V at the IC141 Pin 4 NO Check the PWR CTL H signal from µ com NO YES YES Check the IC141 and Replace YES 8 No 8V To DVD No REG 12V Is the Vcc 14V supplied to Q165 Collector YES Is the Vcc 14V sup plied to Q165 Base YES Check or Replace the Q165 YES 7 No REG 12V Check or Replace the D124 NO NO Check the PWR CTL H signal from µ com ...

Страница 18: ...efer to SMPS 5 3VA troubleshooting Check the IC501 Pins 86 87 88 89 Do T UP Reel Pulses appear at the Q514 Base terminal Replace the T UP Reel Sensor RS501 Check the CST SW and the peripheral circuitry Replace the IC501 The unstable loading of a Cassette tape Does the H signal appear at the IC501 Pin32 during inserting the CST Does the L signal appear at the IC501 Pin19 during inserting the CST Ch...

Страница 19: ...11 Replace the Cap M Aren t the foil patterns and the Components between IC501 Pin 104 and PMC01 Pin11 short Replace the IC501 Refer to 2 No 12VA of Power section Do the Drum PWM Pulses appear at the IC501 Pin34 Aren t the foil patterns and the Components between IC501 Pin34 and PMC01 Pin12 short Do the DFG Pulses appear at the IC501 Pin104 Do the Drum PWM Pulses appear at the IC501 Pin34 Aren t t...

Страница 20: ...3 and PMC01 Pin9 short Does the CFG signal come into the IC501 Pin67 Aren t the foil patterns and Components between IC501 Pin33 and PMC01 Pin9 short 2 SERVO CIRCUIT 3 When the Capstan Motor doesn t run NO NO NO YES YES YES When the Capstan Motor doesn t run Does 12VA appear at the PMC01 YES Replace the IC501 YES NO NO YES Refer to SMPS CAPSTAN 12Volt Trouble Shooting Aren t the foil patterns and ...

Страница 21: ...sn t working Is 5V applied to the IC501 Pin36 Does LED or change when a function button is pressed Refer to SMPS 5 3VA Trouble Shooting Replace the defective switches YES NO NO 2 SERVO CIRCUIT 4 KEY doesn t working ...

Страница 22: ...Video signal appear at the Emitter terminal of the Q309 Check the 5 0VT 5 3VA Line Power Circuit Is I2 C BUS signal applied to the IC301 Pins68 69 Check C316 AGC Chck the path of the signal between the IC301 Pin65 and IC501 Pin49 Replace the IC301 Does the 12VT 5 3VA appear at the Emitter terminal of the Q309 Replace the Q309 Check the 12VT 5 4VA Line Power Circuit Check the System Circuit Refer t...

Страница 23: ...01 Pin23 Check the V H S W level Check R303 R304 Replace the IC301 Refer to SYSTEM I2 C BUS CHECK Trouble Shooting Is the V H S W signal applied to the IC301 Pin70 Is V H S W H about 3 4V at the IC301 Pin70 Clean the Drum Check the path of the Y Luminance RF signal Check C327 Check the path of the Y Luminance RF signal Check the C312 Does the Y Luminance RF signal appear at the IC301 Pin79 Is the ...

Страница 24: ...the line of the 5 0VT 5 3VA Line Power Circuit Replace the X301 Check the Color Pass Check the Color Rotary Circuit IC501 Pin98 Check the Color Rotary level Check the R303 Does the X301 4 43MHZ oscillate Replace the IC301 Does the Color signal appear at the IC301 Pin21 Is Color Rotary H about 3 4V Replace the IC301 NO NO NO YES YES YES YES NO NO NO YES Does the Color signal appear at the IC301 Pin...

Страница 25: ...he System of REC H the IC501 Pin27 the D301 Replace the IC301 Check the line of the 5 0VT 5 3VA Line Power Circuit Check PB Mode Is the REC H signal about 4V applied to the IC301 Pin80 Check the circuit of the IC301 Pins85 86 Check REC Luminance Pass Color Pass Does PB Mdoe operate normally Does the REC RF signal appear at the IC301 Pins88 89 94 95 Check the Drum Drum Connector YES YES YES YES YES...

Страница 26: ...heck the Vcc of IC801 Pins34 40 IC802 Pin13 YES Check the IIC Clock and DATA at IC801 Pins42 43 YES Check the Audio of IC801 Pins16 17 YES Check the Audio of IC802 Pins1 14 YES Check the JK902 Check the IC751 Pins30 31 NO Check the DVD Audio OUT JK902 DVD_A_L_L R NO Check the JK902 NO NO Check the front Jack Check the Power 5 0V 12VT YES NO Check the IC501 Pins17 18 NO Replace IC801 Replace IC802 ...

Страница 27: ...Audio Signals appear at IC801 Pin16 L CH 17 R CH YES Do Audio Signals appear at IC802 Pin10 L CH 16 R CH YES YES YES Do Audio Signals appear at IC802 Pins11 16 Do Audio Signals appear at JK902 Check Power 5 0V 12VT NO Check IC501 Pin26 A H SW NO NO Check the parts of µ COM IC501 Pins17 18 NO Check the Connection at P3D01 Pins7 9 NO Check the A IN line of IC802 C850 C852 NO Check the Vcc of IC802 P...

Страница 28: ...S Do Audio signals appear at IC801 Pins16 17 YES Do FM Audio signals appear at IC801 Pin36 YES Check the Contact Point of Drum Connector if good then Replace the Drum YES Check Power 5V 12V NO Check ports of µ COM IC501 pins 17 18 Check Audio input signal of IC801 Pins2 3 TU A 4 5 DVD A 6 7 AVI A 10 11 AV2 A NO Replace IC801 NO NO ...

Страница 29: ...NO Does the Video signal at the IC903 Pin6 Check the signal flow from IC903 Pins26 27 to JK902 YES YES Check 33V line NO Check 5V line NO YES Does the Clock signal appear at TU701 Pin12 Check the lIC Clock Signal of µ COM Pin18 NO YES Does the data signal appear at TU701 Pin13 Replace Tuner Check the signal flow from TU701 Pin19 to IC301 Pin48 Check the signal from IC301 Pin65 to IC501 Pin49 Check...

Страница 30: ... of IC801 Pins2 3 YES Check the Audio of IC801 Pins16 17 YES Check the Audio of IC802 Pins3 5 YES Check the Signal flow from IC802 Pins3 5 JK902 YES Check the Tuner SIF of TU701 Pin22 NO Replace X751 NO Check the IIC Clock and Data at IC751 Pins12 13 NO Check the signal flow from IC751 Pins30 31 to IC801 Pins2 3 NO Check the IIC Clock and Data at IC801 Pins42 43 NO Check the signal flow from IC801...

Страница 31: ...R143 R144 R145 R146 RECTIFIER SMOOTING BLOCK D124 C124 C134 R121 L124 C121 RECTIFIER SMOOTING BLOCK D123 C127 C137 L127 RECTIFIER SMOOTING BLOCK D121 C126 R136 RECTIFIER SMOOTING BLOCK D122 C128 L128 C138 MOTOR VCC 14VA RE 8V G12V 3 3V 5 3VA M5V 5VT 33V 12V REG BLOCK Q166 ZD151 C160 R166 C159 5VT S W BLOCK Q163 C162 D127 R156 R157 3 3V REG BLOCK IC131 C158 R165 33V S W BLOCK Q161 R154 R155 5V S W ...

Страница 32: ...K DIAGRAM COMBI SCART VPS_VIDEO IIC CLK IIC DATA 2 Tu IF NICAM A2 BLOCK DIAGRAM MSP3417 MSP3407 SW1 SW2 AS A OUT AFT SIF TU_A_R TU_A_L IIC DATA IIC CLK TU_SE_VL_H TU_SECAM_H 33V MOD_VIDEO 5V MOD_AUDIO 5 4VA 5V AFT TU_VIDEO ...

Страница 33: ...F 60dB AMP Y C MIX 65 63 61 46 43 Y Delay 79 78 REC MODE 80 REC H V H SW C ROTARY DATA CLOCK C SYNC V OUT MICOM V IN4 FRONT V IN3 DEC 79 78 76 75 70 69 68 67 65 59 58 54 52 50 V IN2 S1 V IN1 TUNER 48 46 43 33 32 31 CLK IN 29 28 4 43MHz 27 21 95 94 89 88 Killer C LPF ACC BPF Main Conv Main Conv DETAIL ENH NL EMPHA W D CLIP IC301 LA71750M LP REC SP REC To Drum To Drum W D CLIP REC FM EQ Y LPF FBC AG...

Страница 34: ... 36 35 16 A OUT L A OUT R 17 EU2 A OUT L 19 EU2 A OUT R DVD_H 20 8 9 AUDIO INPUT BLOCK VIDEO INPUT BLOCK AUDIO INPUT BLOCK OSD V IN DVD R V IN RF_H DVD A IN L DVD A IN R NORMAL AUDIO OUT To AVCP NORMAL AUDIO IN From AVCP Tu A IN L Tu A IN R DVD A IN L DVD A IN R EU1 A IN L EU1 A IN R EU2 A IN L EU2 A IN R AV2 A IN L AV2 A IN R MODULATOR A OUT To Tu COMBI SCART SCART 2 7 ...

Страница 35: ...3 28 3 29 6 SYSTEM BLOCK DIAGRAM 2fsc L505 Q506 R537 539 584 585 C553 554 LD LD L M CONTROL R525 R526 COMBI SCART R522 C568 MN101D10X Q504 505 R506 507 508 509 511 C504 511 L503 C507 C509 L504 C505 C506 ...

Страница 36: ...RED WITHOUT PERMISSION FROM THE LG ELECTRONICS CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR CUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF FER FROM THE ACTUAL CIRCUIT USED THIS WAY IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT ...

Страница 37: ...3 32 3 33 2 TU IF CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T EE MODE VIDEO TU MODE AUDIO ...

Страница 38: ...acking is failed IC301 Pin 84 is defective EE PB Screen doesn t appear Q305 is defective PB COLOR Signal disappear IC301 Pin70 is defective PB COLOR Signal disappear X301 is defective D301or IC301 Pin 80 REC is defective PB and Recording is failed IC301 doesn t operate IC301 Pin 69 68 are defective Normal Audio signal is not recorded Q301 Q306 are defective No mono Audio Signal in PB MODE Q302 Q30...

Страница 39: ...3 36 3 37 4 Hi Fi CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T PB REC 44 Pin is defective Hi Fi Audio is not appear IC801 Pins42 43 aredefective All Audio is not appear ...

Страница 40: ...3 38 3 39 5 SCART JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T SCART OPTION ...

Страница 41: ...defective µ COM is unstable IC505 is defective VCR will not operate X501 is defective CLOCK SETTING will not operate X502 is defective µ COM will not operate ES501 ES502 LD501 are defective Auto Rew will not working RS501 RS502 are defective Auto stop occures R575 R576 R577 R578 are defective Deck will not operate ...

Страница 42: ...68 PB REC mode 5Vp p IC301 Pin 69 PB REC mode 5Vp p IC301 Pins 21 REC mode 340mVp p IC301 Pins 25 PB mode 300mVp p IC301 Pin 29 PB mode 400mVp p IC301 Pin 70 PB mode 3 6Vp p IC301 Oscilloscope Waveform IC501 Waveform Photographs V HSW IC501 Pin 23 1V 10mS REC PB MODE DV SYNC IC501 PIN 24 1V 100uS QUE REV MODE CTL IC501 Pin 74 1V 10mS CTL IC501 Pin 75 1V 10mS DFG DFG IC501 PIN 65 1V 10mS REC PB MOD...

Страница 43: ... 4 78 4 7 4 75 6 0 0 0 7 0 0 0 8 5 12 5 1 5 1 I C 5 0 1 EE PB REC MODE PIN NO 9 5 5 4 9 10 4 16 4 98 1 3 11 4 16 3 19 3 19 12 4 15 3 19 3 1 13 2 4 2 6 2 68 14 5 12 5 1 5 1 15 1 7 1 6 1 8 16 0 0 0 17 5 18 5 5 18 5 1 5 5 19 2 6 2 5 2 56 20 0 0 0 21 0 0 0 22 1 9 2 2 1 8 23 2 2 57 2 57 24 0 1 0 0 25 5 1 5 1 5 26 2 6 2 5 2 53 27 0 0 4 6 28 4 85 4 85 4 84 29 0 0 0 30 0 0 0 31 0 0 0 32 0 0 0 33 0 2 67 2 ...

Страница 44: ...85 0 C808 3 16 0 3 15 0 C816 2 53 0 2 54 0 C821 9 3 0 9 3 0 C826 0 26 0 0 61 0 C828 5 15 0 5 14 0 C829 2 55 0 2 55 0 C830 0 47 0 0 47 0 C831 2 57 0 2 57 0 C840 5 1 0 5 11 0 C842 5 1 0 5 15 0 C843 2 56 0 2 54 0 C846 2 58 0 2 54 0 C847 0 47 0 0 47 0 C851 4 28 0 02 4 2 0 1 C866 2 53 0 2 52 0 C871 2 59 2 59 0 C873 1 22 0 1 22 0 C876 3 84 0 3 84 0 C877 2 05 0 2 05 0 C879 4 54 0 4 53 0 C880 2 44 0 2 49 ...

Страница 45: ...3 48 3 49 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE LOCATION GUIDE ...

Страница 46: ...3 50 3 51 2 MAIN P C BOARD BOTTOM SIDE LOCATION GUIDE ...

Страница 47: ...3 52 3 53 3 POWER P C BOARD LOCATION GUIDE ...

Страница 48: ...3 54 3 55 5 TIMER P C BOARD 4 KEY P C BOARD ...

Страница 49: ...er Position Recieve OPEN CLOSE Key Receive CLOSE Key 1 Stop Playback Open Tray 2 Display tray open message LOGO 1 Execute Pressed Key IR Key 2 Systemoperati on Routi ne Loop 1 Judge whether have disc and disc type 2 Jump to related disc reading procedure SLED at Inner Side 1 8032 initializes SERVO DSP RISC registers 2 Write RISC code to SDRAM 3 Reset RISC DVD PART ...

Страница 50: ...ake sure the main PCBA don t short on VCCs and switch it on Is 3 3V and 1 8V DC outputs normal on main PCBA Check the regulators or related diodes Connect to PC RS232 Cable and update the FLASH memory code Update FLASH successfully A 1 Check 27MHz system clock 2 Check system reset circuit 3 Check FLASH R W enable signal PRD RWR 4 Check RS232 SIGNALS 5 Check FLASH Memory related circuit NO NO NO NO...

Страница 51: ...ts properly Check the related circuit of MT1389 Have TV signal output Check the filtering and amp circuit of TV signal Check AV cable connection to TV set Does Tray move inside when it is not at closed position Normal TROUT TRIN signals Check the load OPEN CLOSE switch Normal TRCLOSE TROPEN signal Normal LOAD LOAD signal Check the cable connection between main PCBA and loader Check the Tray contro...

Страница 52: ... related circuit of FMSO SL and SL output properly Check the amp circuit on motor driver Check the cable connection with MECHA Do not put in disc and tray close NO NO YES NO YES YES C Optical Lens has movements for searching Focus Proper FOSO outputs to motor driver Check FOSO connection on MT1389 and motor dirver Proper F F outputs Check the amp circuit on motor dirver Check cable connect on with...

Страница 53: ...reading disc NO NO NO NO LD01 or LD02 output properly Check the laser power circuit on MT1336 and connecting to power transistor Collector voltage of power transistor is OK Check the related circuit on laser power transistor Check cable connection between transistor ouput and pick up head Put disc in Laser off Disc ID is correct Proper RFL signal on MT1389 Check the related circuit on MT1389 RFL s...

Страница 54: ...he tracking control amp circuit on motor driver Check cable connection on pick up head Disc is play Check RFO RFLVL signal waveform Focus ON OK Proper signals on A B C D of MT1389 Check connections between MT1389 and pick up head Check FEO signal on MT1389 Check FOSO signal on MT1389 Check the FOSO connection on MT1389 and motor driver YES YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO ...

Страница 55: ...tion lines on MT1389 NO YES Check the cable connection on Front pannel TEST END YES Normal Audio output when disc playback Audio DAC received correct data stream Check connection between MT1379 Audio DAC Normal Audio DAC out Check the related circuit of Audio DAC Check Audio filter amplify mute circuit NO NO NO YES YES YES E NO ...

Страница 56: ...EFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET FLASH R W SIGNAL 1 MT1389 main clock is at 27MHz X501 1 0V 27MHz FIG 1 1 2 MT1389 reset is low active PWR_CTL 5 2VA M_RESET FRONT RESET Time FIG 1 2 3 63 ...

Страница 57: ...3 64 3 RS232 waveform during procedure Downloading TXD RXD FIG 1 3 4 Flash R W enable signal during download Downloading FRD FWR FIG 1 4 ...

Страница 58: ...3 65 2 SDRAM CLOCK DCLK 128MHz Vp p 2 2 Vmax 2 7V FIG 2 1 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform TRIN TROUT TROPEN TRCLOSE FIG 3 1 ...

Страница 59: ...OL RELATED SIGNAL NO DISC CONDITION FMSO 2 0V 1 4V 1 0V STBY 3 3V SL 4 7V 4 0V 2 6V SL 5 3V 4 0V 3 0V FIG 4 1 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION FOSO 1 5V 1 4V 1 3V F 4 0V 3 6V 3 2V F 4 0V 3 6V 3 2V FIG 5 1 ...

Страница 60: ...3 67 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION MDI1 0V 180mV LD01 5 0V 3 5V LD02 5 0V 3 6V FIG 6 1 7 DISC TYPE JUDGEMENT WAVEFORM F FE RFL FIG 7 1 DVD ...

Страница 61: ...3 68 F FE RFL FIG 7 2 DVD F FE RFL FIG 7 3 CD ...

Страница 62: ...3 69 F FE RFL FIG 7 4 CD 8 FOCUS ON WAVEFORM FE FOSO F F FIG 8 1 DVD ...

Страница 63: ...3 70 FE FOSO F F FIG 8 2 CD 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION DMSO 1 4V 1 8V SP 3 6V 2 4V SP 3 6V 4 8V FIG 9 1 ...

Страница 64: ...3 71 10 TRACKING CONTROL RELATED SIGNAL System checking TE TRSO T T FIG 10 1 DVD TE TRSO T T FIG 10 2 CD ...

Страница 65: ...3 72 11 MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 11 1 12 MT1389 VIDEO OUTPUT WAVEFORM 1 100 FIG 12 1 ...

Страница 66: ...3 73 13 MT1389 AUDIO OUTPUT TO AUDIO DAC 2 COMPOSITE VIDEO SIGNAL FIG 12 2 FIG 13 1 ...

Страница 67: ...3 74 FIG 14 1 14 AUDIO OUTPUT FROM AUDIO DAC ...

Страница 68: ...3D 5V BCLK LRCLK DACCLK IC901 MM1623XFBE VIDEO BUFFER RS232_TXD IECDAOUT COAXIAL SPDIF D2_T 1 3 SCART_16 9 RGB_SEL 3V3M CDLD DVDLD SVREF21 5V 8V HOMESW INSW OUTSW ROMDATA 0 7 5 2VA IC501 M_REQ POWER BOARD VFD_RXD S_REQ 5 2VA 8V IIC VFD DAC_SCK IC603 4M 16BIT 4Bank SDRAM VD33D MA 00 11 DMCLK CSJ BA0 BA1 DQM WEJ CASJ RASJ IIC VFD DAC_TXD IC601 MTK MT1389 12V 5V 5 2VA YC_MIX VIDEO_SW SER3 DAC_ML0 OPE...

Страница 69: ...IP FOSO TRSO FMSO DMSO TROPEN ADIN F F T T SL SL LOAD LOAD 27MHz X TAL LD0 1 LDO 2 IOA MDI 1 ALPC V20 PICKSEL LIMIT TRIN TROUT TRCLOSE STBY V1P4 IC603 4M x 16bit SDRAM MA 0 11 DQM0 DQM1 WE CAS RAS CS BA0 BA1 SDCLK SDCKE DQ 0 15 FLASH ROM PRD PWR PCE AD 0 7 A 0 20 EEP ROM SCL SDA RS232C MTK RXD TXD 2 SERVO Block Diagram ...

Страница 70: ...ltage level shift VIDEO Interface AUDIO Interface VCR MICOM IC603 SDRAM 64M DCLK WE CAS RAS CS DCKE MA 0 10 DQM0 DQM1 DQ 0 15 X601 27MHz SCL SDA Y2 Y Y3 Color Y4 Y Y5 Cb Y6 Cr ASPECT 16 9 ACLK ALRCK ABCK MUTE VSCK VSDA ASDTA 0 3 ASTB SCL SDA ASPDIF PWR PCE PRD A 0 20 AD 0 7 VFD_SCK VFD_TXD M_RE Q SCKO TXDO M REQ ...

Страница 71: ...O AUDIO Block Diagram IC901 VIDEO 6dB Amp IC401 AUDIO DAC 2CH IC402 OP Amp LPF Buffer CVBS COMPONENT R G B Y Pb Pr SUPER VIDEO Y C R G B Y Pb Pr Y C DAC RESET ACLK SCL SDA A V JACK MPEG MPEG AUDIO L AUDIO R ADATA3 ...

Страница 72: ......

Страница 73: ...3 79 3 80 A B C D E F G H I J K L M N O P Q R S T CIRCUIT DIAGRAMS 1 SYSTEM CIRCUIT DIAGRAM ...

Страница 74: ...3 81 3 82 2 RF DSP SERVO CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...

Страница 75: ...3 83 3 84 3 AV JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...

Страница 76: ...003 0 003 169 0 002 0 170 0 03 0 02 171 0 03 0 01 172 1 8 1 79 173 1 8 1 78 174 3 25 3 24 175 0 001 0 003 176 4 4 1 177 3 25 3 2 178 3 26 3 2 179 4 1 3 61 180 0 03 0 02 181 0 03 0 02 182 3 25 3 2 183 0 03 0 03 184 0 03 0 03 185 0 03 0 03 186 0 03 0 03 187 0 03 0 03 188 0 03 0 01 189 3 23 3 21 190 1 23 1 24 191 1 24 1 24 192 2 22 2 08 193 0 0 001 194 0 3 0 4 195 3 23 3 21 196 0 7 0 7 197 0 0 001 19...

Страница 77: ...og 4 11 DECK MECHANISM ADJUSTMENT Fixtures and tools for service 4 12 1 Mechanism Assembly Mode Check 4 13 2 Previous Preparation for Deck Adjustment 4 14 3 Torque Measuring 4 14 4 Guide Roller Height Adjustment 4 15 4 1 Prior Adjustment 4 15 4 2 Fine Adjustment 4 15 5 Audio Control A C Head Adjustment 4 16 5 1 Prior Adjustment 4 16 5 2 Tape Path Check between Pinch Roller and Take up Guide 4 17 5...

Страница 78: ... A 5 T 17 19 Arm T up 1 hook A 5 T 20 Supporter capstan Chassis Hole A 6 B 17 18 21 Belt Capstan Motor Capstan3 screws A 6 B 22 Lever F R Locking Tab A 6 B 21 22 23 Clutch Assembly D37 Washer A 6 B 24 Gear Drive Gear Cam Washer Hook A 7 B 25 Gear Sector Hook A 7 B 21 26 Brake Assembly Capstan Chassis Hole A 7 B 21 22 23 27 Plate Slider Chassis Guide A 7 B 24 2526 21 22 23 28 Lever Tension 1 Hook A...

Страница 79: ...parate cable flat from the Drum FPC and the Capstan Motor 2 Release 3 screws S1 on the bottom side of the chassis and separate the drum assembly 3 Release the hooks H1 H2 and separate both the holder FPC and the Cap FPC disassemble if necessary Fig A 1 Cautions in assembly of FPC Holder FPC Drum FPC Cap FPC Assembly shape seen in the reverse direction ...

Страница 80: ...SSEMBLY OF DECK MECHANISM 4 3 B E C Plate Top Arm Assembly F L Gear Assembly Rack F L Opener Door Holder Assembly CST B H3 A B Lever Assembly S W H4 E Fig A 2 Fig A 2 1 Fig A 2 2 Fig A 2 5 Fig A 2 6 Fig A 2 3 Fig A 2 4 ...

Страница 81: ...4 Disassembly of Gear Assembly Rack F L Fig A 2 3 1 Separate the hook H3 while leaning ahead the hook 3 after moving the gear assembly rack F L toward the arrow A direction 2 Separate the gear assembly rack F L toward the arrow B direction CAUTIONS For the assembly correspond the gear part of gear assem bly rack F L to the gear drive 5 Opener Door Fig A 2 4 1 Separate the opener door ahead from th...

Страница 82: ...Arm Assembly Cleaner Fig A 3 3 1 Separate the A part of Fig A 3 1 from the embossing of chassis and hold it up while turning it anti clockwise 11 Head F E Fig A 3 4 1 Separate the A part of the head F E from the emboss ing of chassis and hold it up while turning it anti clock wise 12 Base Assembly A C Head Fig A 3 5 1 Release a screw S5 and disassemble while holding it up Arm Assembly Cleaner Moto...

Страница 83: ...while holding it upward 14 Arm Assembly Tension Fig A 4 2 1 Release the spring tension the hook H7 from the arm assembly tension 2 After releasing the hook H8 of the base tension sepa rate it while holding it up CAUTIONS Spring used for both brake assembly T and arm assembly tension is used 2EA used 15 Reel S Reel T Fig A 4 3 1 Disassemble the reel S reel T while holding it up com parison between ...

Страница 84: ...se 17 Opener Lid Fig A 5 2 1 Release the B part of the opener lid from the embossing of chassis 2 Disassemble the opener lid upward while turning it anti clockwise 18 Arm Assembly Pinch Fig A 5 3 1 Hold the arm assembly pinch up 19 Arm T up Fig A 5 4 1 Turn the arm T up to release the anchor jaw H9 part of chassis and then hold it upward CAUTIONS For the assembly check the C part of the arm assemb...

Страница 85: ...y 90 deg clockwise with a driver for disassembly 21 Belt Capstan Fig A 6 2 Motor Capstan Fig A 6 3 1 Separate the belt Capstan 2 Undo 3 screws S6 on the bottom side of chassis and dis assemble it upward 22 Lever F R Fig A 6 4 1 Release the locking tab L1 and then disassemble it upward 23 Clutch Assembly D37 Fig A 6 5 1 Remove the washer W1 and then disassemble it upward Fig A 6 1 Fig A 6 2 Fig A 6...

Страница 86: ...or Fig A 7 3 1 Release the hook H11 of the gear sector and then hold the gear sector upward 26 Brake Assembly Capstan Fig A 7 4 1 Release the locking tab L2 on the bottom side of the plate slider and then disassemble it upward 27 Plate Slider Fig A 7 5 1 Disassemble the plate slider while holding it up 28 Lever Tension Fig A 7 6 1 Release the lever tension from the guide A of chassis while turning...

Страница 87: ...r assem bly P2 and the P3 are adjusted straightly and then corre spond the gear section groove A to the plate slider hole B 32 Base Assembly P2 Fig A 8 3 Base Assembly P3 Fig A 8 4 1 Disassemble the base assembly P2 downward while mov ing it toward the arrow A direction along with the guide hole of chassis 2 Disassemble the base assembly P2 downward while mov ing it toward the arrow B direction al...

Страница 88: ...ase tension from the embossing of chassis 2 Hold the base tension upward while turning it anti clock wise 35 Arm assembly Idler Jog Fig A 9 2 1 Push both B C parts in Fig A 9 2 toward the arrow direction 2 Disassemble the arm assembly idler upward CAUTIONS Take care to ensure that the D part in the drawing is not hung to chassis in disassembly Fig A 9 1 Fig A 9 2 ...

Страница 89: ...D00 D006 4 Torque gauge adaptor Part No D09 R001 5 Post height adjusting driver Part No DTL 0005 6 Type driver ø5 2 Alignment tape Part No NTSC DTN 0001 PAL DTN 0002 3 Torque gauge 600g Cm ATG Part No D00 D002 SRK VIDEO CASSETTE TORQUE METER VHT 303 S R K V H T S SRK V HT T 300 250 200 150 50 0 300 250 200 150 50 0 100 ...

Страница 90: ... frame and separate the deck assembly Check both the hole A of gear cam and the hole A of chassis correspond Fig C 1 5 Check the mode S W on the main P C board locates at a proper position as in B of the Fig C 1 6 Connect the deck to the main P C board and perform all types of test Gear Cam Gear Drive C Mode S W B Motor Assembly L D Gear Cam Chassis Hole Gear Cam Hole A A Fixtures and tools used V...

Страница 91: ...oles on the housing rail part of chassis to prevent detection of the end sensor If doing so proceeding to the stop mode is done In this status input signals of all modes can be received However operation of the Rewind and the Review is impossible since the take up reel remains at stop status and so cannot detect the reel pulse however possible for several seconds 2 Previous Preparation for Deck Ad...

Страница 92: ...e of oscilloscope to the RF envelope output point and the head switching output point 2 Tracking control playback Locate it at the center Set the RF output to the maximum value via the track ing control when such adjustment is completed after the drum assembly is replaced 3 Height adjusting screw Flatten the RF waveform Fig C 4 2 4 Move the tracking control playback to the right left Fig C 4 3 5 C...

Страница 93: ...he A C head If it is Turn and adjust the tilt adjusting screw to ensure that the tape corresponds to the bottom guide of the P4 and recheck the tape path after pro ceeding play for 4 5 seconds 3 Where the tape bottom is not equal to Fig C 5 3 Adjust the height by using the height adjusting screw B and then readjust it by using the tilt adjusting screw C CAUTIONS Always check the height of the A C ...

Страница 94: ...in cutting off the REV mode CAUTIONS If the RF waveform is changed after adjusting the A C head perform fine adjustment to ensure the RF waveform is flat tened Adjustment Procedure 1 Connect the probe of Oscilloscope to the audio output jack 2 Ensure that Audio 1KHz 7KHz output is flattened at the maximization point by adjusting the Azimuth adjusting screw A Fig C 5 4 Fixtures and tools used Conne...

Страница 95: ... ENVELOPE OUTPUT POINT V2 V1 V1 V1 V MAX 0 7 V1 V MAX 0 8 RF ENVELOPE OUTPUT HEAD RF SWITCHING OUTPUT POINT OSCILLOSCOPE Connection Diagram Waveform CH 2 CH 1 Checking Procedure 1 Check that locking time of the RF and Audio waveform is fallen within the measuring standard in conversion of the play mode from the CUE or the REV mode 2 Readjust the paragraph 5 and 6 if it deviates from the standard F...

Страница 96: ...P VIEW Fig C 9 2 BOTTOM VIEW F E Head Video Head A C Head Pinch Roller Belt Capston Clutch Assembly A37 Fig C 9 3 Tape Transport System Pollution of Video Head or Tape Transport System Poor Sound Low Sound o Pollution of Audio Control Head o Pollution of Pinch Roller or Belt Capstan Belt No tape wound or tape wound loosely FF or REW impossible or slow turning Deterioration of Clutch Assembly D37 T...

Страница 97: ...g C 9 4 Firstly try to use a cleaning tape 1 Use a cleaning patch if foreign materials are not removed with the cleaning tape due to severe dirty of the head Soak the cleaning patch in alcohol and put it to the head tip Smoothly turn the drum turning cylinder to the right or left In this case the cleaning patch must not be moved vertically 1 After completely drying the head test the traveling stat...

Страница 98: ... Part PL 433 Yellow Gear Part PL 433 Yellow Boss Part Side Wall PL 433 Yellow Gear Part Side Application PL 433 Yellow Cam Part Side Application KG 684G Green Gear Sector Gear Cam Base Loading Gear Drive Inner Surface of Guide Rail KG 684G Green Chassis L Chassis R Gear Part 1 2 3 4 6 5 7 1 Inner Side Surface and Top Surface of Loading Path 2 Stable Adhesion Part of Base P2 P3 Coil 3 Gear Cam Shaf...

Страница 99: ...PROTECTION MAINTENANCE AND CHECK OF VIDEO FUNCTION 4 22 Lever F R Base Tension GEAR AY P2 P3 LEVER F R Clutch Contact Part PL 433 Yellow Tension Arm Party Hinge Part PL 433 Yellow BASE TENSION PL 433 ...

Страница 100: ...Syscon checked NO YES YES YES YES NO NO 1 Deck Mechanism A NO NO NO No F R operates Is the current mode an F R mode Check the assembly position of the Mode S W Is normal voltage applied at the Vcc1 and the Vcc2 of the Capstan motor Is the Vctl terminal voltage of the Capstan Motor applied at more than 4V Check the Servo Power circuit Replace the Capstan motor Does the Capstan motor rotate Does the...

Страница 101: ... the spring pinch Replace the drum motor Check the Servo Syscon Check the Syscon µ com No cassette loading is done Insert the cassette Check the holder assembly CST Does output of the CST IN S W change In insertion of the REC tape L _ H _ L In insertion of the REC preven tion tape L _ H _ L _ H Is the CST IN S W normal Is operation of the lever assembly S W normal Check the Syscon circuit Check th...

Страница 102: ...eck the Syscon circuit Check the Syscon circuit Check the Syscon circuit Does the Capstan motor turn Is the Vctl terminal voltage of the drum motor at more than 2 3V Replace the drum motor Is the Vcc voltage of the drum motor normal Check the clutch and the idler assembly YES YES YES YES YES YES YES YES NO NO NO NO NO Is the Vctl terminal voltage of the Capstan motor applied at more than 4V Replac...

Страница 103: ...bly YES Is there short between the cassette switch terminal and the GND on the main P C B assembly Replace the main P C B assem bly or remove the short part NO Check the mode switch position and the Syscon circuit Replace the CST IN switch YES NO YES NO NO Replace the F L switch NO NO No cassette eject is done Does the L D motor turn in reverse Check the L D motor and the drive IC Replace the leve...

Страница 104: ...embly F L Check power supply of the L D motor Check the assembly status of the holder assembly cassette Replace the gear rack F L Does the gear rack F L operate Does the opener door operate Does the arm assembly F L operate Does the L D motor operate Does the holder assembly cassette move same as the arm assembly F L Replace the front loading mechanism assembly YES YES YES YES NO NO NO YES NO YES ...

Страница 105: ...4 28 EXPLODED VIEWS 100 A21 A23 A24 032 109 A22 054A 054 115 116 110 112 113 114 103 105 102 106 107 1 Front Loading Mechanism Section ...

Страница 106: ...EXPLODED VIEWS 4 29 008 011 031 079 017 032 024 406 031 021 028 029 026 A03 027 022 003 004 006 007 014 015 009 409 013 016 012 OPTIONAL PART A01 405 2 Moving Mechanism Section 1 ...

Страница 107: ...EXPLODED VIEWS 4 30 052 517 061 056 518 052A 055 410 032 077 076 078 060 051 064 A11 A12 067 066 065 068 069 070 023 080 058 3 Moving Mechanism Section 2 ...

Страница 108: ......

Страница 109: ...amp 5 2 1 1 3 Clamp Upper 5 2 2 Tray Disc 5 2 3 Base Assembly Sled 5 3 3 1 Gear Feed 5 3 3 2 Gear Middle 5 3 3 3 Gear Rack 5 3 4 Rubber Rear 5 3 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 5 4 10 PWB Assembly Loading 5 4 11 Base Main 5 4 EXPLODED VIEW 1 Deck Mechanism Exploded View 5 5 CONTENTS SECTION 5 MECHANISM OF DVD PART DP 9C MTK MODEL...

Страница 110: ...y Up Down Belt Loading Gear Pulley Gear Loading Guide Up Down PWB Assembly Loading Base Main 4 Screws 1 Connector 1 Locking Tabs 1 Screw 1 Screw 1 Locking Tab 1 Locking Tab 1 Locking Tab 1 Hook 2Screw 2 Locking Tabs 5 1 5 1 5 1 5 1 5 1 5 2 5 3 5 3 5 3 5 3 5 3 5 4 5 4 5 4 5 4 5 4 5 4 5 4 Bottom Bottom Procedure Parts Fixing Type Fig ure Disass embly Note When reassembling perform the procedure in r...

Страница 111: ...e Plate Clamp 1 1 2 Magnet Clamp 1 1 3 Clamp Upper 2 Tray Disc Fig 5 2 1 Insert and push a Driver in the emergency eject hole A at the right side or put the Driver on the Lever B of the Gear Emergency and pull the Lever B in direction of arrow so that the Tray Disc is ejected about 15 20mm 2 Pull the Tray Disc until it is separated from the Base Main completely MAIN BASE TRAY DISC BASE MAIN LEVER ...

Страница 112: ...Release the Scerw S3 4 Rubber Rear Fig 5 3 BASE PU RUBBER DAMPER MIDDLE GEAR RUBBER DAMPER GEAR RACK PINION GEAR GEAR RACK GENERAL PICK UP ASSEMBLY SPINDLE MOTOR ASSEMBLY S2 S2 S3 Fig 5 3 RUBBER DAMPER RUBBER DAMPER SCREW INSERTION TORGUE CONTROL 800gf DOWN Distinguish upper and lower sides Assemble with care Distinguish upper and lower sides Assemble with care ...

Страница 113: ... Up Down Fig 5 4 1 Move the Guide Up Down in direction of arrow A as Fig A 2 Push the Locking Tab L5 down and then lift up the Guide Up Down to separate it from the Base Main When reassembling place the Guide Up Down as Fig C and move it in direction arrow B until it is locked by the Locking Tab L5 And confirm the Guide Up Down as Fig A 10 PWB Assembly Loading Fig 5 4 Put the Base Main face down B...

Страница 114: ......

Страница 115: ...ODED VIEWS 1 Deck Mechanism Exploded View 026 001 002 003 A01 020 018 014 013 017 435 012 019 012 440 015B 015A 015 016 A02 439 012A 012A 010 432 030 025 024 431 435 430 021 035A 439 035 036 A03 A26 5 5 5 6 ...

Страница 116: ......

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