Hitachi-DVP755U-cd-sm维修电路原理图.pdf

SERVICE MANUALSERVICE MANUAL DVD PLAYERDVD PLAYER SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT TKNo. 0501ETKNo. 0501E 2005Digital Media Division, YokohamaApril DO NOT RESELL OR DIVERT IMPROPERLY.DO NOT RESELL OR DIVERT IMPROPERLY. DV-P755UDV-P755U RadioFans.CN 收音机爱 好者资料库 CONTENTS 1 CAUTION FOR SAFETY IN PERFORMING REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 1-1 LASER BEAM SAFETY PRECAUTIONS . . . . . . . . .1-1 1-2 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . .1-2 1-2-1 Product Safety Notice . . . . . . . . . . . . . . . . . . . . .1-2 1-2-2 Precautions during Servicing . . . . . . . . . . . . . . . .1-2 1-2-3 Safety Check after Servicing . . . . . . . . . . . . . . . .1-3 1-3 STANDARD NOTES FOR SERVICING . . . . . . . . . .1-4 1-3-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . .1-4 1-3-2 Instructions for Connectors . . . . . . . . . . . . . . . . .1-4 1-3-3 Pb (Lead) Free Solder . . . . . . . . . . . . . . . . . . . . .1-4 1-3-4 Instructions for Handling Semi-conductors . . . . .1-4 2 GENERAL INFORMATION . . . . . . . . . . . . . . . .2-1 2-1 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 2-2 COMPARISON OF MODELS . . . . . . . . . . . . . . . . . .2-2 2-3 COMPARISON OF MAIN CONTROL ICS . . . . . . . .2-3 2-4 LIST OF ABBREVIATIONS AND TERMS FOR DVD PLAYER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4 2-5 OPERATING CONTROLS AND FUNCTIONS . . . . .2-5 3 MAINTENANCE AND INSPECTION . . . . . . . . .3-1 3-1 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . .3-1 3-2 HOW TO INITIALIZE THE DVD PLAYER. . . . . . . . .3-7 3-3 FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . .3-8 3-3-1 How to Update the Firmware Version . . . . . . . . .3-8 3-3-2 How to Verify the Firmware Version. . . . . . . . . . .3-9 4 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . .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 IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . .6-3 S SCHEMATIC, WIRING DIAGRAMS. . . . . . . . . S-1 S-1 Schematic Diagrams / CBAs and Test Points . . . . S-1 S-2 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-3 S-3 DVD Main 1/3 Schematic Diagram . . . . . . . . . . . . . S-4 S-4 DVD Main 2/3 Schematic Diagram . . . . . . . . . . . . . S-5 S-5 IC101 Voltage Chart . . . . . . . . . . . . . . . . . . . . . . . . S-6 S-6 DVD Main 3/3 Schematic Diagram . . . . . . . . . . . . . S-7 S-7 AV 1/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . S-8 S-8 AV 2/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . S-9 S-9 AV 3/3 PR/PB: chrominance signals), degrading of image will be reduced. DDolby AC3Audio coding format developed by Dolby Laboratories in U.S, also simply referred to as AC3 format: Supports 5-channel full-range sound and one channel for sub-woofer sound playback. D terminalThis terminal, specified by EIAJ (currently JEITA), can automatically switch “digital hi- vision” programs of BS digital broadcast, and “digital standard broadcast” of current image quality. A tuner and TV can easily be connected to the D terminal. There are 5 types of D terminal, depending on the different format of video signal passing thorough the D terminal. DTSDigital Theater System: Sound system as for movie theaters developed by US Digital Theater Systems, Inc. The number of channels provided by DTS is the same for Dolby AC3. DVDDigital Versatile Disc. A huge amount of digital data for video (movie) and audio can be recorded on this disc, whose size is the same as CD. DVD-AudioOne type of DVD standard disc, on which high-quality audio can be recorded DVD-ROne type of DVD standard disc, to which writing once is possible (recordable type) DVD-RAMOne type of DVD standard disc, to which writing up to 100,000 times is possible DVD-ROMOne type of DVD standard disc, to which data for computer can be recorded DVD-RWOne type of DVD standard disc, to which writing up to 1000 times is possible DVD-VideoOne type of DVD standard disc, on which high-quality video and audio can be recorded DVD Video FormatVideo 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 ForumInternational organization that formulates the technical standards of DVD EEIAJElectronic Industries Association of Japan: An organization of manufacturers of consumer electronic devices, industrial electronic devices and electronic components, established in April 1948. EIAJ merged with JEIDA (Japan Electronic Industry Development Association) in November 2000 to become JEITA (Japan Electronics and Information Technology Industries Association). JJPEGJoint Photographic Expert Group: International standard format for compressing still images. LLinear PCMLinear Pulse Code Modulation: LPCM is a format that digitizes analog audio signal during recording and converts it back to analog signal during playback. MMPEGMoving Picture Experts Group: Standard related to compression of digital video and audio. MPEG2 is a higher standard of MPEG and is applied to video (movie) requiring higher quality. MPEG Audio Layer 2One of three audio compression standards (layers 1-3) defined by MPEG MP3MPEG1 Audio Layer-3: Audio data digital compression technology. PProgressive playback function This function converts interlaced images to non-interlaced images and displays them. It can play back 24-frame/second images included in DVD movie software, etc. SSDMISecure Digital Music Initiative: This conference was established by hardware makers, the Recording Industry Association of America (RIAA) and music industry companies, to protect copyrights of musical compositions. VVirtual surroundThis technology localizes sound at any position using only two front speakers, by subjecting the L and R signals to matrix operation. It uses the four transfer functions from L/R speakers located at specified positions to both ears of listener located in a specified position, taking into account the shape of head and the effect of earlobes, and the two transfer functions from any position to both ears. 2-5 2-5 OPERATING CONTROLS AND FUNCTIONS REAR VIEW 12345678 9 1012131411 FRONT PANEL 1./ I (POWER/STANDBY) Switch the player to ON or OFF. (As to the indication of the Operate switch, “I” indicates ON and “” indicates electrical power STANDBY). 2. SKIP/FR Go to previous chapter or track during playback. Press and hold for 1.5 seconds for a reverse search. 3. PLAY Start or resume disc playback. Press for 5 seconds to make progressive scanning mode off. 4. FF/SKIP Go to next chapter or track during playback. Press and hold for 1.5 seconds for a forward search. 5. STOP Stop playback. 6. OPEN/CLOSE Open/close the disc tray. 7. 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 input on your A/V-compatible TV, wide screen TV, or Stereo system. 13. COMPONENT VIDEO OUT Connect to a TV with the Component video in jacks. 14. S-VIDEO OUT Use S-Video cable to connect this jack to the S-Video jack on your A/V-compatible TV or wide screen TV for a higher quality picture. CAUTION: Do not touch the inner pins of the jacks on the rear panel. Electrostatic discharge may cause permanent damage to the player. 2-6 REMOTE CONTROL 1. SURROUND Press to activate the virtual sound. 2./ I (POWER/STANDBY) Press to turn the power on and off. (As to the indication of the Operate switch, I shows ON and shows electrical power stand-by.) 3. A-B REPEAT Repeats playback of a selected section. 4. REPEAT Press to repeat playback of the current disc, title, chap- ter or track. 5. MODE Press to activate program playback or random playback mode when playing CDs or MP3. Press to set x1.3 and x0.8 Rapid Play with voice, Black level (DVD) and Virtual Surround. 6. CLEAR Press to reset the setting. 7. ZOOM Press to enlarge part of a DVD-reproduced image. 8. ANGLE Press to change the camera angle to see the sequence being played back from a different angle. 9. SUBTITLE Press to select the desired subtitle language. 10. MENU Press to display the menu of the Disc. Press to call up the file list when playing MP3. 11. Arrow Buttons ( / / / ) Press to move the cursor and determine its position. 12. ENTER Press to accept a setting. 13. RETURN Press to return to the previous operation. 14. SKIP Press to skip Chapters or Tracks. 15. STOP Press to stop the disc motion. 16.(Backward) Press to play a DVD, an Audio CD, or an MP3 disc in 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 the first scenes of each chapter of the title being played. 21. SETUP Press to enter the setup mode. 22. TOP MENU Press to call up the title menu (DVD). Press to return to the top file of the highest hierarchy in the program and file list (MP3). 23. AUDIO Press to select a desired audio language or sound mode. 24. DISPLAY Press to access or remove the display screen during DVD or Audio CD playback. 25. Numerical Buttons Press to directly select a Track (Audio CD and MP3) for playback. 26. OPEN/CLOSE Press to open or close the disc loading tray. 27. SEARCH MODE Press to access or remove the Search display, which allows you to go directly to a specific Title/ Chapter/ Track/ Time/ Marker. HITACHI DV-RM755U / I DISPLAY 213 456 789 +100 SUBTITLEANGLE REPEAT A-B REPEAT CLEAR AUDIO SEARCH MODE PAUSE /STEP SKIP PLAYSTOP MENUTOP MENU SETUP MODE ZOOM ENTER RETURN DISC NAVIGATION OPEN / CLOSESURROUND 2 3 24 26 25 21 20 22 19 18 8 10 12 13 11 14 4 7 5 9 16 15 6 1 17 27 23 3-1 3-1 TROUBLESHOOTING Troubleshooting is how to service for the specifying malfunction or poor parts. Detect malfunction or poor parts and service as the following charts. 3MAINTENANCE AND INSPECTION FLOW CHART NO.2 The fuse blows out. After servicing, replace the fuse. Check the presence that the primary component is leaking or shorted and service it if defective. Check the presence that the rectifying diode or circuit is shorted in each rectifying circuit of secondary side, and service it if defective. FLOW CHART NO.3 When the output voltage fluctuates. Yes No FLOW CHART NO.4 When buzz sound can be heard in the vicinity of power circuit. Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side, and service it if defective. (D1003, D1006, D1008, D1016, D1030, 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 defective. Check if there is any leak or short-circuit on the loaded circuit, and service it if defective. Yes No FLOW CHART NO.1 The power cannot be turned on. Is the fuse normal? Is normal state restored when once unplugged power cord is plugged again after several seconds? Is the EV +3.3V line voltage normal? See FLOW CHART No.2 Check if there is any leak or short-circuiting on the primary circuit component, and service it if defective. (Q1031, Q1003, Q1008, T1001, D1001, D1002, D1004, D1005, D1011, C1003, C1005) Check each rectifying circuit of the secondary circuit and service it if defective. Yes Yes Yes No No No 3-2 FLOW CHART NO.7 P-ON+5V is not outputted. (EV+10V is outputted normally.) Is the H signal inputted into the base of Q1004? Replace Q1004. Check R1068 and D1046, and service it if defective. Yes No FLOW CHART NO.8 P-ON+3.3V is not outputted. (P-ON+9V is outputted normally.) Is 3.3V voltage supplied to the collector of Q1011? Replace Q1011 or R1067. Check D1008, C1007, C1038, L1007, and the periphery circuit, and service it if defective. Yes No FLOW CHART NO.9 EV+5V is not outputted. Is EV+10V outputted normally? Check D1047 and the periphery circuit, and service it if defective. Refer to FLOW CHART NO.6 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 emitter of Q1002? Is the voltage of base on Q1002 lower than the voltage of emitter on Q1002 when turning the power on? Replace Q1002. Check D1030, D1048, C1035, C1048, L1009, and the periphery circuit, and service it if defective. Check Q1016 and PWRCON line and service it if defective. Yes Yes No No 3-3 Yes No FLOW CHART NO.12 The key operation is not functioning. Are the contact point and the installation state of the key switches (SW2101, SW2104-2108) normal? When pressing each switches (SW2101, SW2104- 2108), do the voltage of each pin of IC2001 (shown below) increase? SW2104, 2106, 2107: IC2001 3PIN SW2101, 2105, 2108: IC2001 4PIN Check the switches (SW2101, SW2104-2108) and their periphery, and service it if detective. No Re-install the switches (SW2101, SW2104-2108) correctly or replace the poor switch. Replace IC2001. Yes FLOW CHART NO.13 No operation is possible from the remote control unit. Operation is possible from the DVD, but no operation is possible from the remote control unit. Replace the infrared remote control receiver (RM2001) or replace the remote control unit.