Philips-DVD-757-VR-Service-Manual(1) 电路图 维修手册.pdf

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1、Published by MW 0366 Service PaCEPrinted in the Netherlands Subject to modification EN 3122 785 13771 Copyright 2003 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any f

2、orm or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. DVD-VCR PlayerDVD757VR DVD757VR /00 DVD757VR /02 DVD757VR /05 Contents Chapter Adjustment Procedure Schematic Diagrams and CBAs Exploded Views Mechanical and Electrical Parts Lists Sec. 1

3、: Sec. 2: Standard Maintenance Mechanism Alignment Procedures Disassembly / Assembly of Mechanism Deck Exploded Views Survey of versions: /00 PAL I /05 PAL B/G /02 PAL B/G,L,L when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue w

4、ill be melted). (Fig. S-1-6) (4) Release the flat pack-IC from the CBA using twee- zers. (Fig. S-1-6) Caution: 1. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other p

5、arts from damage. (Fig. S-1-2) 2. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it. Top View OutIn Bottom View Input 5 10 Pin 1 Pin 1 FFC Cable Connector CBA * Be careful to avoid a short cir

6、cuit. Fig. S-1-1 Hot-air Flat Pack-IC Desoldering Machine CBA Flat Pack-IC Tweezers Masking Tape Fig. S-1-2 1-3-2NOTE_1-3 With Soldering Iron: (1)Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, y

7、ou can remove it easily. (Fig. S-1-3) (2)Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4) (3)Bottom of the flat pack-IC is f

8、ixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (4)Release the flat pack-IC from the CBA using twee- zers. (Fig. S-1-6) With Iron Wire: (1)Using desoldering braid, remo

9、ve the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) (2)Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. (3)While heating the pins using a fine tip soldering ir

10、on or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5 (4) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up

11、. Then remove (glue will be melted). (Fig. S-1-6) (5) Release the flat pack-IC from the CBA using twee- zers. (Fig. S-1-6) Note: When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently

12、because it may be damaged if force is applied. Flat Pack-IC Desoldering Braid Soldering Iron Fig. S-1-3 Fine Tip Soldering Iron Sharp Pin Fig. S-1-4 To Solid Mounting Point Soldering Iron Iron Wire or Hot Air Blower Fig. S-1-5 Fine Tip Soldering Iron CBA Flat Pack-IC Tweezers Fig. S-1-6 1-3-3NOTE_1-

13、3 2. Installation (1)Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily. (2)The “ I ” mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when

14、 positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.) (3)Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges. Instructions for Handling Semi-conductors Electrostatic breakdown of the semi-conductors may occur due to a

15、 potential difference caused by electro- static charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1M) that is prop- erly grounded to remove any static electricity that may be charged on the body. 2. Ground for Workbench Be sure to place a conductive s

16、heet or copper plate with proper grounding (1M) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on cloth- ing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing. Examp

17、le : Pin 1 of the Flat Pack-IC is indicated by a mark. Fig. S-1-7 Presolder CBA Flat Pack-IC Fig. S-1-8 CBA CBA Grounding Band Conductive Sheet or Copper Plate 1M 1M 1-4-1H9520PFS PREPARATION FOR SERVICING How to Enter the Service Mode About Optical Sensors Caution: An optical sensor system is used

18、for the Tape Start and End Sensors on this equipment. Carefully read and follow the instructions below. Otherwise the unit may operate erratically. What to do for preparation Insert a tape into the Deck Mechanism Assembly and press the PLAY button. The tape will be loaded into the Deck Mechanism Ass

19、embly. Make sure the power is on, connect TP501 (SENSOR INHIBITION) to GND. This will stop the function of Tape Start Sensor, Tape End Sensor and Reel Sensors. (If these TPs are connected before plugging in the unit, the function of the sensors will stay valid.) See Fig. 1. Note: Because the Tape En

20、d Sensors are inactive, do not run a tape all the way to the start or the end of the tape to avoid tape damage. TP501 S-INH Q504 Q503 Fig. 1 1-5-1H9520IB OPERATING CONTROLS AND FUNCTIONS DVD757VR/00 1-5-2H9520IB 1-5-3H9520IB DVD757VR/05 1-5-4H9520IB 1-5-5H9520IB 1. Disc Tray (DVD) insert a disc here

21、 2. A OPEN/CLOSE button (DVD) to open/close the disc tray 3. Cassette Compartment (VCR) insert a tape here 4. A STOP/EJECT button (VCR) when playback is stopped, press to eject the tape 5. AUDIO and VIDEO in jacks connect to AUDIO and VIDEO OUT of an audio source 6. B PLAY button (VCR) to play a tap

22、e 7. RECORD button (VCR) Press once to start recording, repeatedly to start an One- Touch Recording 8. RECORD light (VCR) light appears during recording, it flashes when a recording is paused 9. RECORD TIMER light (VCR) light appears when DVD/VCR is in standby mode for a timer recording(also light a

23、ppears during timer recording) 10. IR (Infrared) Remote Sensor (DVD,VCR) receive signals from remote control 11. B PLAY button (DVD) to start, pause or resume disc playback 12. C STOP button (DVD) to stop playback 13. DIRECT DUBBING button (VCR) to play DVD disc and record its content to video casse

24、tte tape at the same time 14. DVD light (DVD) light appears when DVD/VCR in DVD mode STANDBY-ON SOURCE DVD VCR STOPDIRECT DUBBINGPLAY OPEN/CLOSE RECORD TIMERRECORD RECORDPLAY VIDEO AUDIO IR TITLECHP. TRK. VCD PBC REPEAT A B 1234 568 79 10 2726 24252318 19 20 21 22 11 1214 1315 16 17 Front Panel 15.

25、VCR light (VCR) light appears when DVD/VCR in VCR mode 16. SOURCE button (DVD,VCR) to select between DVD and VCR mode 17. ySTANDBY-ON button (DVD,VCR) to switch the player to ON or OFF STANDBY-ON light (DVD,VCR) light appears when DVD/VCR turns on. 18. TRK (DVD) Stays on when repeat track function i

26、s on. 19. CHP. (DVD) Stays on when repeat chapter function is on. 20. TITLE (DVD) Stays on when repeat title function is on. 21. REPEAT (DVD) Stays on when the repeat function is on. 22. A-B REPEAT (DVD) Stays on when the A-B repeat function is on. 23. B (DVD,VCR) Stays on when the inserted disc or

27、cassette is being played back. 24. k (DVD,VCR) Lights up when the inserted disc comes to a pause.(DVD) Lights up when the playback is in a still or in a slow mode.(VCR) 25. Digital Display (DVD,VCR) Displays how long a current title or track has been played back.When a chapter or track has switched,

28、 the number of a new title, chapter or track is displayed.(DVD) Works as a clock, or a tape counter. Also displays a channel number, and remaining time for OTR.(VCR) 26. CD Lights up when a CD is inserted on the tray. VCD Lights up when a VCD is inserted on the tray. PBC Lights up when a VCD(with PB

29、C function) is inserted on the tray. 27. DVD Lights up when a DVD is inserted on the tray. 1. RF OUT jack use supplied RF coaxial cable to connect to the ANTENNA IN on your TV, cable box or Direct Broadcast System 2. AERIAL jack connect to an antenna or cable 3. AV2 (DECODER) jack (VCR only) connect

30、 SCART cable from another DVD/VCR, camcoder or an audio/video source AERIAL RF OUT AV2 (DECODER) DVD/VCR AV1 (TV) DVD OUTPUT ONLY DIGITAL AUDIO OUT L R COAXIAL OPTICAL ANALOG AUDIO OUT S-VIDEO OUTVCR 21345 6 7 89 Rear Panel 4. AV1 (TV) jack connect SCART cable to a TV 5. S-Video Out jack (DVD only)

31、connect to a TV with S-Video inputs 6. AUDIO OUT (Left/Right) jacks (DVD only) connect to AUDIO inputs of an amplifier, receiver or stereo system 7. COAXIAL (Digital audio out) jack (DVD only) connect to AUDIO inputs of a digital (coaxial) audio equip- ment 8. OPTICAL (Digital audio out) jack (DVD o

32、nly) connect to digital (optical) audio equipment 9. MAINS (AC Power Cord) connect to a standard AC outlet DVD757VR/02 1-5-6H9520IB 1-6-1H9520SNA SIGNAL NAME ABBREVIATIONS Signal NameFunction 8POUT-1 SCART 1 8Pin Output Control Signal 8POUT-2 Control SCART 1 8Pin Level by using 8POUT-1 and 8POUT-2 A

33、-COMAudio Head Common A-INAudio Signal Input A-MODEHi-Fi Tape Detection Signal A-MUTE-H Audio Mute Control Signal (Mute = “H”) A-OUTAudio Signal Output A-PB/REC Normal Audio Play Back/Record Signal AE-HAudio Erase Head AFC Automatic Frequency Control Signal AGCIF AGC Control Signal AL+12V Always +12

34、V with AC Plug Connected AL+20.5V/ +12V Always +15V/+12V with AC Plug Connected AL+5V Always +5V with AC Plug Connected AL+9V Always +9V with AC Plug Connected AL-30V Always -30V with AC Plug Connected AMPCCTL AMP Connected Terminal AMPVccAMPVcc AMPVREF inV-Ref for CTL AMP AMPVREF OUT V-Ref for CTL

35、AMP AVcc A/D Converter Power Input/ Standard Voltage Input C-CONT Capstan Motor Control Signal C-F/R Capstan Motor FWD/REV Control Signal (FWD=”L”/REV=”H”) C-FG Capstan Motor Rotation Detection Pulse C-POW-SWCapstan Power Switching Signal C-POWER- SW Capstan Power Switching Pulse C-ROTA Color Phase

36、Rotary Changeover SIgnal C-SYNCComposite Synchronized Pulse CLKSELClock Select (GND) COLOR-IN SECAM or MESECAM Chroma Video Input Signal at Super Impose CTL + Playback/Record Control Signal (+) CTL - Playback/Record Control Signal (- ) CTLAMPoutTo Monitor for CTL AMP Output D-CONTDrum Motor Control

37、Signal D-PFG Drum Motor Phase/Frequency Generator D-REC-HDelayed Record Signal D-V- SYNCDummy V-sync Output DAVN-LVPS/PDC Data Receive = “L” DRV-CLKLED Clock Driver IC Control Clock DRV-DATALED Clock Driver IC Control Data DRV-STB LED Clock Driver IC Chip Select Signal DVD ADVD Audio Signal DVD LED“

38、DVD” LED Signal Output DVD PLAYDVD Play at High DVD-8PIN-IN SCART 8Pin DVD Input Control Signal DVD-B-OUT DVD Component Video Signal (blue) DVD-G-OUT DVD Component Video Signal (green) DVD-LED“DVD” LED Signal Output DVD-P- ON+12V +12V at DVD Power-On Signal DVD-P- ON+3.3V +3.3V at DVD Power-On Signa

39、l DVD-P- ON+5V +5V at DVD Power-On Signal DVD-POWERDVD Power Control Signal DVD- POWERMONI TOR DVD Power Monitor Signal (P-off=H, P-on=L) Signal NameFunction 1-6-2H9520SNA DVD-R-OUT DVD Component Video Signal (red) DVD-VIDEODVD Video Control Signal END-STape End Position Detect Signal FE-H GNDGround

40、 for Full Erase Head FF/REW-L Frequency Characteristics Switching Signal (FF/REW=”L”) FIL-ON/OFFFilament ON/OFF Control Signal FP-CLKClock Input FP-DIN Serial Data Input FP-DOUT Serial Data Output FP-STB Serial Interface Strobe FSC-IN 4.43MHz 4.43MHz Clock Input FTV-IN Comparator Input of Video Sign

41、al for Follow TV H-A-COMPHead Amp Comparator Signal H-A-SWVideo Head Amp Switching Pulse Hi-Fi-A Hi-Fi Audio Head Hi-Fi-COM Hi-Fi Audio Head Common Hi-Fi-H-SWHi-Fi Audio Head Switching Pulse IIC-BUS- SCLIIC BUS Control Clock IIC-BUS- SDAIIC BUS Control Data INPUT SELECT Input Selector Control Signal

42、 JK1-8P-OUT SCART 8Pin Output Control Signal K1 Key Data 1 Input K2 Key Data 2 Input KEY-1Key Scan Input Signal 1 KEY-2Key Scan Input Signal 2 LD-SW Deck Mode Position Detector Signal LD-SW Deck Mode Position Detector Signal LINE MUTE Audio Mute Control Signal LINE- MUTE Audio Mute Control Signal LM

43、-FWD/REVLoading Motor Control Signal MOD-A Modulator Audio Output Signal MOD-VModulator Video Output Signal N-A-PB Normal Audio Playback Signal NameFunction N-A-REC Normal Audio Recording OSC Oscillator Input OSCin Clock Input for letter size OSCoutClock Output for letter size OSD-V-INOSD Video Sign

44、al Input OSD-V-OUTOSD Video Signal Output OSDVssOSDVss OUTPUT- SELECT Output Select P-DOWN-L Power Voltage Down Detector Signal P-OFF-HPower Off at High P-ON+15V+15V at Power-On Signal P-ON+44V+44V at Power-On Signal P-ON+5V+5V at Power-On Signal P-ON-HPower On Signal at High PB-H-OUTPlayback Signal

45、 Output at High PG-Delay Video Head Switching Pulse Signal Adjusted Voltage POW-SAF P-ON Power Detection Input Signal POWER-LED“POWER” LED Signal Output REC-LED“REC” LED Signal Output REC-SAF-SW Recording Safety SW Detect (With Record tab=”L”/ With out Record tab=”H”) REMOTE- VIDEO Remote Control Se

46、nsor RESET System Reset Signal (Reset=”L”) RF-SWVideo Head Switching Pulse S-REELSupply Reel Rotation Signal SC2-INInput Signal from Pin 8 of SCART2 SECAM-C-INSECAM Chroma Signal Input SECAM-FM- OUT SECAM FM Signal Output SECAM-HSECAM Mode at High ST-S Tape Start Position Detector Signal T-REEL Take

47、 Up Reel Rotation Signal TIMER LED“TIMER” LED Signal Output Signal NameFunction 1-6-3H9520SNA TIMER+5V+5V at Timer TIMER- LED“TIMER” LED Signal Output TRICK-H Special Playback = “H” in SECAM Mode TU-AUDIOTuner Audio Input Signal TU-VIDEOTuner Video Input Signal V-ENV Video Envelope Comparator Signal

48、 V-INVideo Signal Input V-OUTVideo Signal Output VccVcc VCR LED“VCR” LED Signal Output VDD Power Supply VIDEOVideo Signal VssVss(GND) XCinSub Clock XCOUTSub Clock XinMain Clock Input XoutMain Clock Input Signal NameFunction 1-7-1H9520DC CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart This

49、flowchart indicates the disassembly steps to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route, and dress the cables as they were originally. 2. Disassembly Method Note: (1): Identification (location) No. of parts in the figures (2): Name of the part (3): Figure Number for reference (4): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P=Spring, L=Locking Tab, S=Screw, CN=Connector *=Unhook, Unlock, Release, Unplug,