Zenith DVP7771 Скачать руководство пользователя страница 52

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3-58

3-59

WAVEFORMS

CH1. IC2A1 Pin41,
Tracking Error

CH1. IC2A1 Pin41, VBR Tracking Error

CH2. IC2M1 Pin4, Tracking Drive(TDO)

CH1. IC2A1 Pin42, Focus Error

CH2. IC2A1 Pin36, Pi

Focus Search Case

IC501 Pin 112, Chrominance
(Super video out Mode)

IC501 Pin 114, Luminance
(Super video out Mode)

IC501 Pin 99
MPEG Clock(27MHz)

CH1. IC2A1 Pin42, Focus Error

CH2. IC2M1 Pin21, Focus Drive

Disc Detection Case

CH1. IC2A1 Pin42, Focus Error
CH2. IC2M1 Pin21, Focus Drive

IC501 Pin 118, Composite

Tek

Stop :

2.50MS/s

4 Acqs

M20.0 s

2 Apr 1999
14:47:27

Glitch

Ch1

Ch3

500mV

[T ]

Содержание DVP7771

Страница 1: ...1 1 CONTENTS SECTION 1 SUMMARY SECTION 2 EXPLODED VIEWS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST...

Страница 2: ...1 2 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 3 SAFETY CHECK AFTER SERVICING 1 4 SPECIFICATIONS 1 5...

Страница 3: ...YS 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...

Страница 4: ...el only Note This table is unofficial and for reference only Be sure to confirm the precise values for your particular country and locality Leakage Current test Confirm specified or lower leakage curr...

Страница 5: ...R21 EMC CSA FCC Regional code Refer to DVD VIDEO Specification Book RATING ITEM SPECIFICATIONS POWER REQUIREMENT DC Adaptor 9 8V Battery 8 0V POWER CONSUMPTION 10W With Battery OPERATING TEMPERATURE R...

Страница 6: ...2 1 SECTION 2 EXPLODED VIEWS CONTENTS EXPLODED VIEWS 2 2 Cabinet and Main Frame Section 2 2 Deck Mechanism Section 2 3 Packing Accessory Section 2 4...

Страница 7: ...ion 270 A46 451 271 451 290 268 260 261 262 264 269 267 266 263 251 250 278 451 279 254 255 252 253 257 258 256 272 A49 276 273 274 275 452 286 452 280 A47 282 265 284 283 287 281 285 A48 451 A43A A44...

Страница 8: ...2 3 Deck Mechanism Section 430 430 001 430 002 002 006 005 004 003 002 431 431 007...

Страница 9: ...sory Section PACKING SHEET 804 PACKING OPTIONAL PARTS 803 OWNER S MANUAL 801 REMOCON 900 R C BATTERY 808 BOX CARTONX 802 PACKING 803 812 830 PLUG ASS Y 2WAY ADAPTER 814 PLUG ASS Y 813 S VHS CABLE BATT...

Страница 10: ...3 1 SECTION 3 ELECTRICAL CONTENTS LCD PART 3 2 ELECTRICAL TROUBLE SHOOTING GUIDE 3 17 BLCOK DIAGRAMS 3 26 CIRCUIT DIAGRAM 3 32 PRINTED CIRCUIT DIAGRAMS 3 62...

Страница 11: ...orm and VR815 adjust with 63 5us center in display 3 RGB AMP adjusting Black Level adjusting Fixed Input RAMP or 5STEP signal TP G waveform adjust while viewing Adjust between 0 5V 4 5V 4 BRIGHT adjus...

Страница 12: ...AM1 GAM0 Black side GAM1 White side Fixed VR810 811 Input RAMP signal and view TP G waveform deside that GAM0 is black side knee point and GAM1 iswhite side knee point GAM0 and GAM1 adjusting performs...

Страница 13: ...ck maximum or Input 10 STEP signal adjust Black maximum Adjust best signal in ZOOM condition 10 WB B VR807 2 1V WB R VR806 2 3V Brighness adjusting Input 5STEP 10STEP and Black and White signal adjust...

Страница 14: ...S W Check X801 C832 Replace IC801 IC803 Q806 Check and Replace IC808 Q811 Q812 QQ813 Check and Replace D801 L809 IC806 VCO Check and Replace Q810 IC807 Check and Replace FUSE F801 Normal Q8F1 Normal o...

Страница 15: ...ion TFT LCD pressure voltage 17V 15V 5V 3 3V Power source and D803 D804 Check TFT LCD Normal Replace Color Adjusting Normal Readjust as adjustement standard Each CONNECTOR Replace and Reassemble INVER...

Страница 16: ...3 7 LCD BLOCK DIAGRAM CON 8 0 3 INVERTER TFT LCD CROMA IC IR3Y29BM CONTROL IC MN5814 POWER LCD MODE CONTROL Y C COMPOSITE DC9V AC550V SYNC SEP VCO H V R G B CONTROL 3 3V 5V 7 5V 17V 15V...

Страница 17: ...e ADAPTOR NO 1 8V Is Q109 OK NO 12V NO 5V NO 3 3V NO LCD POWER Replace Q109 Is E 5V OK Is Q112 OK Is Q113 OK Replace Q110 Replace Q112 Replace Q113 Is Q108 OK Replace Q108 Is Q106 OK Replace Q106 Repl...

Страница 18: ...W Check Video signals from MPEG Check TR Buffer Q471 Q472 Q473 Check LC Filter AUDIO IN SPEAKER ABNORMAL Check Audio Jack Mode S W Is Q481 OK VIDEO IN ABNORMAL Check Video Jack Mode S W Is IC461 OK Ch...

Страница 19: ...If OK Replace B D PICTURE ABNORMAL Check Disc YES If OK YES If OK Refer to Servo part Replace B D DISC ERROR Check the connection of CON 901 Check IC303 Pins 89 82 YES NO NO YES YES If OK YES Reconnec...

Страница 20: ...oder Does the moving picture of the video CD play on the screen normally Does the audio sound output normally END Check power clock Check CD DVD DSP output signal Check MPEG Decoder input signal Check...

Страница 21: ...710 R711 Solder defective parts again T701 Check the connection of CON901 CON701 Check waveform of IC701 Pin46 47 Does pulse waveform of RC901 Pin 1 appear Is IC701 Pin 49 connected to RC901Pin1 Is RC...

Страница 22: ...o IC207 Pin59 Replace IC207 Check power circuit Replace X201 or IC211 33 8688MHz clock defect CHECK POINT General Is IC203 Pin79 80 84 88 about 2 2V END NO NO NO NO NO YES YES YES YES YES Does signal...

Страница 23: ...s move up and down Check Focus Driver output IC207 Pin 88 IC2M1 Pins 13 14 Check SLED Driver output IC201 Pin 80 IC2M1 Pin15 16 IC207 Pin 80 no output IC207 is defective IC2M1 Pin 15 no output IC2M1 i...

Страница 24: ...n appear OPEN CLOSE Replace COM or IC201 Replace IC207 Check IC2A1 Pin 11 12 13 14 in DVD Mode Fig 3 FOCUS ERROR waveform IC201 no output Pick up is defective Check IC207 and IC2M1 when CON203 Pin3 is...

Страница 25: ...rn RF 1 5 1 6V IC2A1 Pin 57 Fig 5 RF waveform Check IC2A1 Pins 5 6 7 8 No signal Pick up is defective Replace IC207 Check IC207 Pin84 No signal at IC207 IC207 is defective Check IC207 Pin 165 Check th...

Страница 26: ...T S Drive CD DVD Decoder Servo RF IC SDRAM Battery DC DC Converter Builten BATT Charger System Power Supply Power Control AC Adapter Spindle Drive SDARM FLASH CPU MPEG Deconder TV Enconder Tuner LCD P...

Страница 27: ...CON CON902 7 2V LOAD S W Q109 SI3863 DC DC CON IC104 MAX1744 DC DC CON IC108 MAX1775 DC DC CON IC109 MAX1605 FET Q106 SI9407 FET Q107 SI9939 FET Q108 SI1403 5V LOAD S W Q110 SI3865 LOAD S W Q113 SI38...

Страница 28: ...sled Spindle M D PICK UP MCK IC 207 HDC25D811 CD DVD DSP DVD SERVO IC2A1 3 3 3P3721 RF Signal Processor FDO TDO FMO UCOM I F DVD A B C D FE TE PI SBADD 4 DVD CD RF DRAM 256K x 16bit 16 9 ICADDR 0 8 IC...

Страница 29: ...udio DAC SPEAKER LEFT L J405 EARPHONE JACK DA_LRCK AOUT3 DA_BCK PCMCLK R IC402 NJM4580 OP AMP R L IC413 NJM4580 OP AMP L R IC403 NJU4052 ANALOG MUX IC414 BA7786 SPEAKER EARPHONE AMP J404 Audio I O Jac...

Страница 30: ...3 30 IC303 XC9572XL CPLD IC501 PANTERA2 _LE LC FILTER LC FILTER LC FILTER IC461 NJM2233 BUFFER BUFFER BUFFER LCD BOARD CVBS C Y VIDEO_IO_CON LCD 1 5 CVBS I O JACK S VIDEO JACK 5 VIDEO BLOCK DIAGRAM...

Страница 31: ...SQS0 SDCLK1 PSYNC DSP_INT SENSE DSP_CS AD 00 20 RF MOTOR I F MIRR LDON SCLK SD ATA EE_CS F_IN 32 MD 00 31 MCLK2 CKE MA 00 10 MA12 13 CS0 RAS CAS WE DQM 0 3 SPINDLE_FG ALE AD 04 19 16 LADD 04 19 16 LA...

Страница 32: ...MEMO...

Страница 33: ...3 8 3 9 LCD CIRCUIT DIAGRAM LCD1 CIRCUIT DIAGRAM No power No power No power No power Not operate 5V 3 3V Line dead 3 3V Line dead 2002 02 01 R14121A...

Страница 34: ...D2 CIRCUIT DIAGRAM Display abnormal Black Display abnormal unstable Color abnormal Color abnormal No display Side black abnormal Speaker 1 Dimmig abnormal No Display Black background Speaker 2 2002 02...

Страница 35: ...3 12 3 13 LCD3 CIRCUIT DIAGRAM Display unstable Display unstable brightness abnormal Interface Line occur Vcom abnormal Display abnormal 2002 02 01 R14120A...

Страница 36: ...3 C SYNC 36 2 4 Y signal 0 5 37 2 1 38 4 7 COM 3 4 7 39 0 40 2 41 2 42 2 43 5 VCC 44 1 3 45 2 7 46 2 9 47 3 2 48 2 7 PIN NO VOLT WAVEFORM 1 0 2 3 3 HD 0 3 3 3 0 4 0 5 3 3 VD 0 3 3 6 2 8 HQ OUT 7 2 8...

Страница 37: ...3 15 3 16 LCD P C BOARD LOCATION GUIDE LOCATION GUIDE...

Страница 38: ...MEMO MEMO...

Страница 39: ...defective E 5V is bad Q101 is defective 1 8V 3 3 ard bad IC108 is defective 1 8V 3 3V are bad IC109 is defective 12V is bad Q107 is defective 3 3V is bad Q108 is defective 12V is bad IC120 is defectiv...

Страница 40: ...3 34 3 35 2 DRIVER CIRCUIT DIAGRAM Sled Not mone Tracking Sled Spindle Focuse waveforms page 3 58 3 59 2002 02 01 R14109A...

Страница 41: ...3 36 3 37 3 RF CIRCUIT DIAGRAM CD DVD LD abnormal CD DVD picture abnomal DVD LD abnormal DVD LD abnormal Tracking Focuse waveforms page 3 58 3 59 2002 02 01 R14110A...

Страница 42: ...3 38 3 39 4 DSP CIRCUIT DIAGRAM Focus Servo Fail Tracking Servo Fail Sled Servo Fail Spindle Motor abnormal DRAM control MPEG Signal Tracking Sled Spindle Focuse 2002 02 01 R14111A...

Страница 43: ...RAM CIRCUIT DIAGRAM Q2A2 are defective CD LD will not be on Q2A1 are defective DVD LD will not be on Q2A3 are defective NO focus Arocking Control IC 212 is defective Scratched LD audio abnormal 2002 0...

Страница 44: ...3 42 3 43 6 PANTER CIRCUIT DIAGRAM waveforms page 3 58 3 59 2002 02 01 R14113A...

Страница 45: ...3 44 3 45 7 MEMORY CIRCUIT DIAGRAM 2002 02 01 R14114A...

Страница 46: ...3 46 3 47 8 X BUS CIRCUIT DIAGRAM Q501 is defective Key S W voltage abnormal 2002 02 01 R14115A...

Страница 47: ...3 48 3 49 9 CPLD CIRCUIT DIAGRAM 2002 02 01 R14116A...

Страница 48: ...3 50 3 51 10 VIDEO CIRCUIT DIAGRAM Q472 is defective C signal is bad Q471 is defective Y signal is bad COMP Video S Video Y S Video C 2002 02 01 R14117A...

Страница 49: ...Audio Out Bad IC413 is defective ICH Audio IC403 is defective 2CH Audio out is bad IC414 is defective speakers earphone are bad Q406 is defective Optical out is bad IC401 is defective 2CH Audio out ba...

Страница 50: ...3 54 3 55 12 FRONT CIRCUIT DIAGRAM System not operate System not operate Power not control Q701 is defective key S W voltage abnormal 2002 02 01 R14122A...

Страница 51: ...3 56 3 57 13 REMOCON CIRCUIT DIAGRAM Remocon not operate Q902 is defective LED not operate 2002 02 01 R14123A...

Страница 52: ...s Search Case IC501 Pin 112 Chrominance Super video out Mode IC501 Pin 114 Luminance Super video out Mode IC501 Pin 99 MPEG Clock 27MHz CH1 IC2A1 Pin42 Focus Error CH2 IC2M1 Pin21 Focus Drive Disc Det...

Страница 53: ...7 3 13 3 10 19 5 5 37 2 56 1 84 4 9 60 9 55 88 2 17 2 16 88 3 14 3 10 20 2 514 2 51 38 0 00 0 00 89 1 97 1 97 89 1 80 1 80 21 2 514 2 51 39 2 40 2 76 Q109 Q109 Q109 Q109 90 1 61 1 61 90 0 00 3 10 22 0...

Страница 54: ...3 62 3 63 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE LOCATION GUIDE...

Страница 55: ...3 64 3 65 2 FRONT KEY P C BOARD LOCATION GUIDE LOCATION GUIDE...

Страница 56: ...MEMO MEMO...

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