Hitachi DV-P755U Service Manual Download

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SERVICE MANUAL

DVD PLAYER

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

No. 0501E

2005

Digital Media Division, Yokohama

April

DO NOT RESELL OR DIVERT IMPROPERLY.

DV-P755U

Summary of Contents for DV-P755U

Page 1: ...NUAL DVD PLAYER SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT TK No 0501E 2005 Digital Media Division Yokohama April DO NOT RESELL OR DIVERT IMPROPERLY DO NOT RESELL OR DIVERT IMPROPERLY DV P755U ...

Page 2: ...BLY 4 1 4 1 CABINET DISASSEMBLY INSTRUCTIONS 4 1 4 1 1 Disassembly Flowchart 4 1 4 1 2 Disassembly Method 4 1 4 1 3 How to Eject Manually 4 3 5 EXPLODED VIEW AND PARTS LIST 5 1 5 1 EXPLODED VIEW 5 1 5 2 REPLACEMENT PARTS LIST 5 2 5 2 1 Mechanical Parts List 5 2 5 2 2 Electrical Parts List 5 3 6 APPENDIX 6 1 6 1 SYSTEM CONTROL TIMING CHARTS 6 1 6 2 IC PIN FUNCTION DESCRIPTIONS 6 2 6 3 LEAD IDENTIFI...

Page 3: ... on Do not look directly at the laser beam CAUTION Use of controls and adjustments or doing procedures other than those specified herein may result in hazardous radiation exposure Location Top of DVD mechanism 1 CAUTION FOR SAFETY IN PERFORMING REPAIR Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin Drive Mechanism Assembly Laser Beam Radiation ...

Page 4: ...te especially 1 Wires covered with PVC tubing 2 Double insulated wires 3 High voltage leads D Use specified insulating materials for hazardous live parts Note especially 1 Insulation tape 2 PVC tubing 3 Spacers 4 Insulators for transistors E When replacing AC primary side components transformers power cord etc wrap ends of wires securely about the terminals before soldering F Observe that the wire...

Page 5: ...gs and externally exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below Measuring Method Power ON Insert load Z between B earth ground power cord plug prongs and exposed accessible parts Use an AC voltmeter to measure across the terminals of load Z See F...

Page 6: ...r Handling Semi conductors Electrostatic breakdown of the semi conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 MΩ that is properly grounded to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper p...

Page 7: ...equency 20 Hz 44 kHz 96 kHz sampling frequency Music CD 20 Hz 20 kHz JEITA Signal Noise S N ratio CD 70 dB JEITA Dynamic range DVD linear audio 70 dB CD 70 dB JEITA Total distortion ratio DVD 0 004 CD 0 0045 Terminal Video output PIN JACK Audio output PIN JACK Component video output PIN JACK S Video output MINI DIN 4PIN JACK 75 Ω Coaxial digital audio output PIN JACK Others Power supply 120 V AC 1...

Page 8: ...ct O Progressive Out O AUDIO Audio D A Converter 192kHz 24bit Digital Audio Out Optical Coaxial O DTS Digital Out O Virtual Surround O Dynamic Range Compression Dolby Digital O TRICK PLAY Search Speed 2 to 100 FORWARD REWIND DVD 2 8 20 50 100 CD 2 8 30 2 to 100 FORWARD REWIND DVD 2 8 50 100 CD 16 Slow Speed 1 16 1 8 1 2 FORWARD REWIND IP Search Smooth 2x Play O x1 3 x0 8 Play with Audio O Step For...

Page 9: ...5 IC503 FLASH ROM MBM29LV160BE90TN KE1 ES29LV160DB 90TG M29W160EB70N6E PBF MX29LV160BBTC 90G IC103 MBM29LB160T BM90TN K MX29LV160ABTC 90G IC103 AUDIO D A CONVERTER PCM1782DBQR IC601 PCM1755DBQR IC601 ERROR VOLTAGE DET EL817B EL817C LTV 817B F LTV 817C F PS2561A 1 W IC1001 EL817B EL817C LTV 817B F LTV 817C F PS2561A 1 W PS2561A 1 Q IC1001 1 2V REG LD1117SC R IC1002 PQ070XZ5MZP IC1002 SHUNT REGULATO...

Page 10: ...eo recording playback standard that applies to DVD Video DVD R and DVD RW DVD Video Recording Format Video recording playback standard that applies to DVD RAM and DVD RW This allows versatile editing functions differing from the DVD Video Format DVD Forum International organization that formulates the technical standards of DVD E EIAJ Electronic Industries Association of Japan An organization of m...

Page 11: ...Disc tray 8 Display 9 MAIN AC Power Cord Connect to a standard AC outlet 10 COAXIAL Digital audio out Use coaxial digital audio out to connect to a compatible Dolby Digital receiver Use to connect to a Dolby Digital decoder or DTS decoder 11 AUDIO OUT Left Right Connect to the AUDIO inputs of an amplifier receiver or stereo system 12 VIDEO OUT Use a video cable to connect one of the jack to Video ...

Page 12: ...n the fast reverse motion 17 PAUSE STEP Press to pause Disc playback Press repeatedly to advance the DVD picture step by step or one frame at a time 18 Forward Press to fast forward the Disc Press PAUSE STEP then press this button to begin slow motion playback Press this button repeatedly to change the forward speed of slow motion 19 PLAY Press to begin playback 20 DISC NAVIGATION Press to display...

Page 13: ...030 IC1002 Q1002 Q1004 Q1005 Q1011 Does the photo coupler circuit on the secondary side operate normally Check IC1001 D1012 D1024 and their periphery and service it if defective Check IC1001 IC1006 D1048 and their periphery and service it if defective FLOW CHART NO 5 FL is not outputted Is approximately 23V voltage supplied to the anode of D1003 Check D1003 and periphery circuit and service it if ...

Page 14: ... normally Check D1047 and the periphery circuit and service it if defective Refer to FLOW CHART NO 6 P ON 9V EV 10V is not outputted Yes No FLOW CHART NO 10 EV 1 2V is not outputted Is 2 5V voltage supplied to Pin 3 of IC1002 Replace IC1002 Check D1006 C1014 and the periphery circuit and service it if defective Yes No FLOW CHART NO 6 P ON 9V EV 10V is not outputted Is 10V voltage supplied to the e...

Page 15: ... control is activated Is the L pulse supplied to the Pin 25 of CN1001 Replace DVD Main CBA Is 5V voltage supplied to Pin 3 terminal of the infrared remote control receiver RM2001 Yes No Check EV 5V line and service it if defective No No Yes Yes Yes Yes Yes Yes No No No No FLOW CHART NO 11 The fluorescent display tube does not light up Is 3 3V voltage supplied to Pins 6 24 of IC2001 Is the voltage ...

Page 16: ...ror occurs Replace the DVD Main CBA No improvement can be found Original DVD Main CBA is poor Replace the DVD Mechanism No Yes Yes FLOW CHART NO 15 The disc tray cannot be opened and closed Replace the DVD Main CBA Original DVD Main CBA is poor Replace the DVD Mechanism No improvement can be found No Yes FLOW CHART NO 14 The disc tray cannot be opened and closed It can be done using the remote con...

Page 17: ... JK1401 Are the chroma signals outputted to the S OUT terminal JK1401 No No No No Are the composite video signals outputted to the VIDEO OUT terminal JK1404 FLOW CHART NO 20 Picture does not appear normally Set the disc on the disc tray and playback Are the video signals outputted to each pin of CN1601 on the AV CBA Replace the DVD Main CBA or DVD Mechanism Check the line between each pin of CN160...

Page 18: ...VD Mechanism Replace the DVD Main CBA or DVD Mechanism Replace IC1201 Check the periphery between Pins 1 7 of IC1201 and JK1404 and service it if detective Check each line between each pin of CN1601 and each pin of IC1201 on AV CBA and service it if detective CN1601 13PIN IC1201 2PIN AUDIO L CN1601 15PIN IC1201 6PIN AUDIO R Are the analog audio signals inputted to each pin of IC1201 Are the analog...

Page 19: ...n that order Fig 1 appears on the screen 2 Press CLEAR button on the remote control unit Fig 2 appears on the screen When OK appears on the screen the factory default will be set 3 To exit this mode press y I button MODEL Version Region EXIT POWER EEPROM CLEAR CLEAR Fig 1 differ depending on the models MODEL Version Region EEPROM CLEAR OK EXIT POWER EEPROM CLEAR CLEAR differ depending on the model...

Page 20: ...nished the tray opens automatically Fig 7 appears on the screen and the checksum in 2 of Fig 7 appears on the VFD Fig 8 At this time no button is available 6 Remove the disc on the tray 7 Unplug the AC cord from the AC outlet Then plug it again 8 Turn the power on by pressing the y I button and the tray will close 9 Press 1 2 3 4 and DISPLAY buttons on the remote control unit in that order Fig 9 a...

Page 21: ... this mode press y I button 3 3 2 How to Verify the Firmware Version 1 After making sure that no disc is in unit turn the power on 2 Press 1 2 3 4 and DISPLAY buttons on the remote control unit in that order The Firmware version appears on the VFD and TV screen 3 Turn the power off to reset the unit MODEL Version Region EEPROM CLEAR OK EXIT POWER EEPROM CLEAR CLEAR differ depending on the models F...

Page 22: ...epair work To avoid damage of pickup follow next procedures 1 Short the three short lands of FPC cable with solder before removing the FFC cable CN201 from it If you disconnect the FFC cable CN201 the laser diode of pickup will be destroyed Fig D4 2 Disconnect Connectors CN301 CN401 and CN601 Remove two Screws S 3A and S 3B and lift the DVD Main CBA Fig D4 3 CAUTION 3 When reassembling confirm the...

Page 23: ...1 2 Front Assembly L 2 L 3 L 1 L 1 Fig D2 Fig D3 S 2 S 2 3 Reinforce Plate 4 DVD Main CBA CN201 CN301 CN401 CN601 A S 3B S 3A FCC Cover Fig D4 View for A Short the three short lands by soldering Either of two places Connector ...

Page 24: ...he opening as shown 3 Turn the shaft along with the opening clockwise 4 Repeat steps 2 and 3 until the tray will open 5 Pull the tray slowly manually 5 DVD Mechanism S 4 S 4 S 4 Fig D5 7 Function CBA 6 AV CBA S 5 S 6 CN2001 L 4 Fig D6 Front View for B Turn the shaft along with the opening clockwise Rear Opening Shaft e g screwdriver B ...

Page 25: ...3 x 10 3 x 8 A16 2B1 A13 001 DVD MAIN CBA CBA REPLACEMENT ORDER FORMAT AV CBA COMPONENT REPLACEMENT 1B1 DVD MECHANISM UNIT REPLACEMENT ORDER FORMAT FUNCTION CBA COMPONENT REPLACEMENT 3 x 8 Note Components without any numbers in exploded views had not been assigned as service parts as of the date of issue of this manual M3 x 8 2B5 M3 x 8 1 2 3 4 A B C ...

Page 26: ... REAR A16 TJ18582 TOP CASE V2 AC1001 TE15463 AC CORD 1B1 TJ18583 DVD MECHA 2B1 TJ17579 HOLDER F I P 2B5 TJ18584 REINFORCE PLATE 001 TJ18685 DVD MAIN CBA ACCESSORIES X1 TJ18683 REMOTE CONTROL UNIT X5 TJ15699 AV CORD RCA X20 TJ18684 OWNER S MANUAL SYMBOL NO P NO DESCRIPTION Note Products marked with a have special characteristics important to safety ...

Page 27: ...Q1004 TJ17492 TRANSISTOR KTC3198 Y Q1005 TC10778 TRANSISTOR KTC3199 GR Q1008 TC10778 TRANSISTOR KTC3199 GR Q1011 TC12634 TRANSISTOR 2SC2120 Y TPE2 Q1015 TC12411 TRANSISTOR KRA110M Q1016 TC10778 TRANSISTOR KTC3199 GR Q1031 TJ17593 FET 2SK3498 T6L1FUNANQ Q1201 TC10778 TRANSISTOR KTC3199 GR Q1202 TC10778 TRANSISTOR KTC3199 GR Q1204 TC10784 TRANSISTOR KTA1266 Y Q1351 TC10778 TRANSISTOR KTC3199 GR Q135...

Page 28: ... Drive TP303 on the DVD Main CBA Unit Disc Drive TP301 on the DVD Main CBA Unit Focus Drive TP304 on the DVD Main CBA Unit Tracking Drive TP302 on the DVD Main CBA Unit 0V 3 3V 0V 1 65V 0V 0V 0V 1 65V 1 65V 1 65V Tray Close Play Play Tray Open Tray Close Disc Rotation Play Disc Stop Tray Open ...

Page 29: ...y 7 OUT a KEY 1 Segment Output Key Source 1 8 OUT b KEY 2 Segment Output Key Source 2 9 OUT c KEY 3 Segment Output Key Source 3 10 OUT d KEY 4 Segment Output Key Source 4 11 OUT e Segment Output 12 f 13 g 14 h 15 VEE Pull Down Level 16 OUT i Segment Output 17 OUT 7G Grid Output 18 6G 19 5G 20 4G 21 3G 22 2G 23 1G 24 VDD Power Supply 25 VSS GND 26 IN OSC Oscillator Input 27 OUT FP DOUT Serial Data ...

Page 30: ... Emitter C Collector B Base R Reference G Gate D Drain S Source KIA4558P P RC4580IP UTC4558 PT6313 S TP L SC16313 G 2SA1015 Y TPE2 2SC2120 Y TPE2 KTA1266 Y KTC3198 Y KTC3203 Y KRA110M KTA1267 Y KTC3199 GR LTV 817B F LTV 817C F PS2561A 1 W FAN431AZXA KIA431 AT 2SK3498 EL817B EL817C LD1117SC R 1 GND 2 Vout 3 Vin MM1622XJBE ...

Page 31: ...he correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All voltages are DC voltages unless otherwise specified Values in schematic diagrams The values dielectric strength power capacitance and tolerances of the resistors excluding variable resistors and capacitors are indicated in the schematic diagrams using abbreviations Re...

Page 32: ...re prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Voltage indications for PLAY and STOP mode on the schematics are as shown below 5 How to read converged lines 6 Test Point Information A V F This symbol means fast operating fuse Ce symbole repre...

Page 33: ...SPINDLE MOTOR 4 AV CBA FUNCTION CBA DVD MAIN CBA CN1001 is soldered directly to the PCB CN2101 is soldered directly to the PCB DRIVE CBA PICK UP UNIT SP 3 SP 4 TRAY IN 5 GND 6 SL 7 SL 8 FS 3 TS 4 GND CD PD 5 GND DVD PD 6 PD MONI 7 DVD LD 8 TS 1 FS 2 GND 11 F 12 VREF 13 E 14 B 15 C 16 GND LD 9 CD LD 10 A 17 D 18 CD DVD 19 P ON 5V 20 AC CORD VIDEO Y OUT VIDEO Cb Pb OUT VIDEO Cr Pr OUT VIDEO C 10 10 ...

Page 34: ...S 4 S 3 DVD Main 1 3 Schematic Diagram 1 NOTE Either IC461 or IC462 is used for DVD MAIN CBA ...

Page 35: ...S 5 S 4 DVD Main 2 3 Schematic Diagram ...

Page 36: ...2 64 0 0 96 128 1 7 1 7 PIN NO PLAY STOP PIN NO PLAY STOP PIN NO PLAY STOP PIN NO PLAY STOP 129 2 3 2 3 161 3 4 3 4 193 225 3 4 3 4 130 2 3 2 3 162 0 0 194 226 131 2 3 2 3 163 1 8 1 8 195 227 132 2 4 2 3 164 0 0 196 3 4 3 4 228 133 2 4 2 4 165 1 7 1 8 197 229 0 0 134 2 4 2 4 166 1 7 1 7 198 230 135 2 3 2 3 167 3 4 3 4 199 231 3 4 3 4 136 2 3 2 3 168 0 0 200 232 1 3 1 6 137 2 3 2 3 169 1 8 1 8 201 ...

Page 37: ...S 7 S 6 DVD Main 3 3 Schematic Diagram ...

Page 38: ...ly Otherwise it may cause some components in the power supply circuit to fail NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal Ce symbole reprèsente un fusible à fusion rapide CAUTION For continued protection against fire hazard replace only with the same type fuse ATTENTION Pour une protection continue les risqes d Incele n utiliser que des fusible de même ...

Page 39: ...S 9 S 8 AV 2 3 Schematic Diagram ...

Page 40: ...c d e f f g c d e f g c d e f g c d e f g c d e f g h i i a b a b a b a b a b FL2001 MATRIX CHART REPEAT TITLE GROUP VCR CHP REC SACD TRK ALL B PSCAN DVD P M HD V CD A A 5G 4G 3G 2G 1G 7G 6G a d g c b e f f i i REPEAT TITLE GROUP VCR CHP REC SACD TRK A ALL B PSCAN DVD PM HDVCD A ...

Page 41: ...F3 Pin 18 of CN1601 Pin 8 of CN1601 C1402 PLUS LEAD Pin 13 of CN1601 Pin 15 of CN1601 Pin 10 of CN1601 20 20µs 0 1V 0 1V VIDEO Y VIDEO Y VIDEO C VIDEO C 0 1V 0 1V 20 20µs VIDEO CVBS VIDEO CVBS 0 5V 0 5V 20 20µs AUDIO L AUDIO L 1V 1V 0 5ms 0 5ms AUDIO R AUDIO R 1V 1V 0 5ms 0 5ms SPDIF SPDIF 1V 1V 0 1 0 1µs ...

Page 42: ...wer supply Otherwise it may cause some components in the power supply circuit to fail NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal Ce symbole reprèsente un fusible à fusion rapide CAUTION For continued protection against fire hazard replace only with the same type fuse ATTENTION Pour une protection continue les risqes d Incele n utiliser que des fusible ...

Page 43: ...fective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal Ce symbole reprèsente un fusible à fusion rapide CAUTION For continued protection against fire hazard replace only with the same type fuse ATTENTION Pour une protection conti...

Page 44: ...C 3 C 3 Function CBA Top Bottom View FUNCTION CBA Top View FUNCTION CBA Bottom View ...

Page 45: ...8 9 10 11 REMOTE SENSOR RM2001 1G 7G 23 17 a KEY 1 b KEY 2 c KEY 3 d KEY 4 e K1 K2 FP STB FP DIN FP DOUT FP CLK GRID FIP SEGMENT FL2001 IC2001 FRONT PANEL CONTROL 13 14 16 3 4 f g h i KEY MATRIX CN2001 CN2101 FP STB 23 FP DIN 22 FP DOUT 24 FP CLK 21 REMOTE 25 RESET 73 RESET IC462 1 3 3 3V IC202 OP AMP 15 16 14 13 12 11 17 18 23 6 4 5 3 1 2 25 24 27 26 81 SL AMP 143 SP ROT 3 3V 146 FD OFST 139 TD O...

Page 46: ...RAL I O INTERRUPT CONTROLLER TIMER WATCH DOG TIMER REMOTE CONTROL 32BIT CPU STREAM I F EXTERNAL MEMORY I F SDRAM ECC UMAC 114 115 116 117 132 131 134 133 129 130 126 124 125 123 83 DEBUG BCU INST CACHE DATA CACHE D A D A D A 149 158 Y I P C Cr Pr Cb Pb VIDEO Y I P VIDEO C VIDEO Cr Pr VIDEO Cb Pb 177 SPDIF 170 PCM BCK 171 PCM DATA 169 PCM LRCLK 152 151 23 51 SDRAM DATA 0 15 SDRAM ADDRESS 0 11 SDRAM...

Page 47: ... 3 3V Q1204 3 8 8 VIDEO Y I P 10 10 VIDEO C 6 6 VIDEO Cb Pb 4 4 VIDEO Cr Pr VIDEO Y I P VIDEO C VIDEO Cb Pb VIDEO Cr Pr JK1401 S VIDEO OUT 3 4 2 1 Y C CN601 CN1601 AUDIO SIGNAL DATA AUDIO SIGNAL VIDEO SIGNAL TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM DVD MAIN CBA AV CBA VIDEO OUT COMPOSITE VIDEO Cb Pb OUT VIDEO Y OUT VIDEO ...

Page 48: ...3 1 2 A V F REG 3 1 2 Q1008 LATCH CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F1001 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail NOTE The voltage for parts in hot circu...

Page 49: ...No 0501E TK Digital Media Division Yokohama DV P755U ...

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