Philips-DVD-740-VR-Service-Manual(1) 电路图 维修手册.pdf

《Philips-DVD-740-VR-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Philips-DVD-740-VR-Service-Manual(1) 电路图 维修手册.pdf（107页珍藏版）》请在收音机爱好者资料库上搜索。

1、Published by MW 0269 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 12940 Copyright 2002 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 for

2、m or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. DVD-Video PlayerDVD740VR DVD740VR /001 /051 ContentsPage Laser Beam Safety Precautions1-1-1 Important Safety Precautions1-2-1 Preparation for Servicing1-3-1 Standart Notes for Servicing1-4-

3、1 Operating Controls and Functions1-5-1 Signal Name Abbreviations1-6-1 Cabinet Disassembly Instructions1-7-1 Electrical Adjustment Instructions1-8-1 Firmware Renewal Mode1-9-1 Block Diagrams1-10-1 Schematic Diagrams/CBAs and Test Points1-11-1 Waveforms1-12-1 Wiring Diagram1-13-1 System Control Timin

4、g Charts1-14-1 IC Pin Function Descriptions1-15-1 Lead Identifications1-16-1 Exploded Views1-18-1 Spare Parts List RadioFans.CN 收音机爱 好者资料库 MAIN SECTION DIGITAL VIDEO DISC PLAYER when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue

5、 will 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

6、 parts 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 c

7、ircuit. 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,

8、 you 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

9、 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. 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, re

10、move 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

11、iron 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

12、up. 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 gentl

13、y 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_

14、1-3 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 wh

15、en 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

16、 a 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

17、 sheet 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. Exa

18、mple : 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 1-4-1H9330PFS PREPARATION FOR SERVICING How to Enter the Service Mode About Optical Sensors Caution: An optical sensor system is use

19、d 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 A

20、ssembly. Make sure the power is on, TP501 (SENSOR INHIBITION) to GND. This will stop the function of Tape Start Sensor, Tape End Sen- sor 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 End Se

21、nsors are inactive, do not run a tape all the way to the start or the end of the tape to avoid tape damage. About REC-Safety Switch Caution: The REC-Safety Switch is directly mounted on the Main CBA. When the Deck Mechanism Assembly is removed from the Main CBA for servicing, this switch does not wo

22、rk automatically. What to do for preparation In order to record, press the Rec button while pushing REC-SAFETY SW on the Main CBA. See Fig. 1. (REC-SAFETY SW) SW506 Q504TP501 S-INH Q503 Fig. 1 1-5-1H9330IB OPERATING CONTROLS AND FUNCTIONS DVD740VR/001 1-5-2H9330IB 1-5-3H9330IB 1-5-4H9330IB 1-5-5H933

23、0IB 1-5-6H9330IB DVD740VR/051 1-5-7H9330IB 1-5-8H9330IB 1-5-9H9330IB 1-5-10H9330IB 1-6-1H9330SNA SIGNAL NAME ABBREVIATIONS Signal NameFunction 8POUT-1 SCART 1 8Pin Output Control Signal 8POUT-2 SCART 2 8Pin Output Control Signal A-COMAudio Head Common A-MODEHi-Fi Tape Detection Signal A-MUTE-H Audio

24、 Mute Control Signal (Mute = “H”) A-IN(L)-FAudio Signal Input (L) A-IN(R)-FAudio Signal Input (R) A-OUT(L)-FAudio Signal Output (L) A-OUT(R)-FAudio Signal Output (R) A-PB/REC Normal Audio Play Back/Record Signal AE-HAudio Erase Head AFC Automatic Frequency Control Signal AGCIF AGC Control Signal AL+

25、15V/+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+12V Always +12V with AC Plug Connected AL-30V Always -30V with AC Plug Connected AMPCCTL AMP Connected Terminal AMPVccAMPVcc AMPVREFINV-Ref for CTL AMP AMPVssAMPVss (GN

26、D) AVcc A/D Converter Power Input/ Standard Voltage Input CC Terminal C-CONTCapstan Motor Control Signal C-F/R Capstan Motor FWD/REV Control Signal (FWD=”L”/REV=”H”) C-FG Capstan Motor Rotation Detection Pulse C-POWER- SW Capstan Power Switching Pulse C-ROTA Color Phase Rotary Changeover SIgnal C-SY

27、NCComposite Synchronized Pulse CAS LED“CASSETTE” LED Signal Output CLKSELClock Select (GND) CTL (+)Playback/Record Control Signal(+) CTL (-)Playback/Record Control Signal (-) CTLAMPoutTo Monitor for CTL AMP Output D-CONTDrum Motor Control Signal D-FG Drum Motor Rotation Detection Pulse D-PGDrum Moto

28、r Pulse 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 LED“DVD” LED Signal Output DVD-8PIN-IN SCART 8Pin DVD Inpu

29、t Control Signal DVD-P- ON+3.3V +3.3V at DVD Power-On Signal DVD-P- ON+5V +5V at DVD Power-On Signal DVD-P- ON+12V +12V at DVD Power-On Signal DVD-POWERDVD Power Control Signal DVD-POWER- MONITOR DVD Power Monitor Signal (P-off=H, P-on=L) DVD-B-OUT DVD Component Video Signal (blue) DVD-G-OUT DVD Com

30、ponent Video Signal (green) DVD-R-OUT DVD Component Video Signal (red) END-STape End Position Detect Signal FE-H GNDGround for Full Erase Head FF/REW-L CTL Amp Gain Switching Signal (FF/REW=”L”) FSC-IN 4.43MHz 4.43MHz Clock Input Signal NameFunction 1-6-2H9330SNA FTV-IN Comparator Input of Video Sig

31、nal for Follow TV H-A-COMPHead Amp Comparator Signal H-A-SWVideo Head Amp Switching Pulse Hi-Fi-A (L) Hi-Fi Audio Head (L) Hi-Fi-A (R) Hi-Fi Audio Head (R) Hi-Fi-COM Hi-Fi Audio Head Common Hi-Fi-H-SWHi-Fi Audio Head Switching Pulse HLFLPF Connected Terminal (Slicer) IIC-BUS- SCLIIC BUS Control Cloc

32、k IIC-BUS- SDAIIC BUS Control Data JK1-8P-OUT-1 SCART 1 8Pin Output Control Signal JK1-8P-OUT-2 SCART 2 8Pin Output Control Signal KEY-1Key Scan Input Signal 1 KEY-2Key Scan Input Signal 2 LD-SW Deck Mode Position Detector Signal LM-FWD/REVLoading Motor Control Signal MOD-A Modulator Audio Output Si

33、gnal MOD-VModulator Video Output Signal N-A-PB Normal Audio Playback N-A-REC Normal Audio Recording OSCINClock Input for letter size OSCOUTClock Output for letter size OSD-V-INOSD Video Signal Input OSD-V-OUTOSD Video Signal Output OSDVssOSDVss OUTPUT- SELECT Output Select P-DOWN-L Power Voltage Dow

34、n Detector Signal P-ON+44V+44V at Power-On Signal P-ON+5V+5V at Power-On Signal P-ON+9V+9V at Power-On Signal P-ON-HPower On Signal at High PG-DELAY Video Head Switching Pulse Signal Adjusted Voltage PG/LPPG/LP POW-SAF P-ON Power Detection Input Signal Signal NameFunction REC LED“REC” LED Signal Out

35、put REC-SAF-SW Recording Safety SW Detect (With Record tab=”L”/ With out Record tab=”H”) REMOTERemote Control Sensor RESET System Reset Signal (Reset=”L”) RF-SWVideo Head Switching Pulse RGB- THROUGH SCART 2 RGB Through Control Signal S-REELSupply Reel Rotation Signal SC2-INInput Signal from Pin 8 o

36、f SCART2 ST-S Tape Start Position Detector Signal T-REELTake Up Reel Rotation Signal TIMER LED“TIMER” LED Signal Output TIMER+5V+5V at Timer TU-AUDIOTuner Audio Input Signal TU-VIDEOTuner Video Input Signal V-ENV Video Envelope Comparator Signal VccVcc VCR LED“VCR” LED Signal Output V-INVideo Signal

37、 Input V-OUTVideo Signal Output VIDEO-INVideo Signal Input VIDEO-OUTVideo Signal Output VssVss(GND) X-INMain Clock Input X-OUTMain Clock Input XC-INSub Clock XC-OUTSub Clock Signal NameFunction 1-7-1H9330DC CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart This flowchart indicates the disass

38、embly 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 r

39、eference (4): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P=Spring, L=Locking Tab, S=Screw, CN=Connector, W=Washer *=Unhook, Unlock, Release, Unplug, or Desolder e.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2) (5): Refer t

40、o “Reference Notes.” ID/ LOC. No. PART REMOVAL Fig. No. REMOVE/*UNHOOK/ UNLOCK/RELEASE/ UNPLUG/DESOLDER Note 1Top CoverD18(S-1)- 2 Front Assembly D2 *CN505, *2(L-1), Tray Panel, *7(L-2) 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 3 Top Bracket D24(S-2)- 4Jack CBAD33(S-3)- 5 DVD Mecha Assembly D4 3(S-4), *CN501,

41、 *CN701 - 1 Top Cover 8 VCR Chasis Unit 6 DVD Main CBA Unit 5 DVD Mecha Assembly 2 Front Assembly 9 Deck Assembly 4 Jack CBA 3 Top Bracket 7 Rear Panel 10 Main CBA 13 Power Supply CBA 17 Insulator 15 Deck Pedestal-2 14 Deck Pedestal-1 11 Function CBA 16 Side Bracket 12 AFV CBA 6 DVD Main CBA Unit D5

42、 3(S-5), *CN101, *CN401 2 2-1 2-2 2-3 3 7 Rear Panel D63(S-6), 3(S-7)- 8 VCR Chassis Unit D7 *CN001, *CN002, 5(S-8), 5(S-9) - 9 Deck Assembly D8Desolder, 2(S-10)4,5 10Main CBAD8- 11 Function CBA D8Desolder, *CN2002- 12AFV CBAD8Desolder- 13 Power Supply CBA D9 3(S-11), Bracket, *(L-3) - 14 Deck Pedes

43、tal-1 D96(S-12), 3(W-1)- 15 Deck Pedestal-2 D9(S-13)- 16 Side Bracket D9(S-14)- 17InsulatorD9- (1) (2) (3) (4) (5) ID/ LOC. No. PART REMOVAL Fig. No. REMOVE/*UNHOOK/ UNLOCK/RELEASE/ UNPLUG/DESOLDER Note 1-7-2H9330DC Reference Notes CAUTION 1: Locking Tabs (L-1) and (L-2) are fragile. Be careful not

44、to break them. 1-1. Connect the wall plug to an AC outlet and press the OPEN/CLOSE button to open the Tray. 1-2. Remove the Tray Panel by releasing two Locking Tabs (L-1). 1-3. Press the OPEN/CLOSE button again to close the Tray. 1-4. Press the POWER button to turn the power off. 1-5. Unplug an AC c

45、ord. 1-6. Disconnect connector CN505. 1-7. Remove Screw (S-1A). 1-8. Release seven Locking Tabs (L-2) (to do this, first release five Locking Tabs (A) at the side and top, and then release two Locking Tabs (B) at the bot- tom.) CAUTION 2: Electrostatic breakdown of the laser diode in the optical sys

46、tem block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair work. To avoid damage of pickup follow next procedures. 2-1. Slide the pickup unit as shown in Fig. D5. 2-2. Short the three short lands of FPC cable with so

47、l- der before removing the FFC cable (CN101) from it. If you disconnect the FFC cable (CN101), the laser diode of pickup will be destroyed. (Fig. D5) 2-3. Disconnect Connector (CN401). Remove three Screws (S-5) and lift the DVD Main CBA Unit. (Fig. D5) CAUTION 3: When reassembling, confirm the FFC c

48、able (CN101) is connected completely. Then remove the solder from the three short lands of FPC cable. (Fig. D5) 4. When reassembling, solder wire jumpers as shown in Fig. D8. 5. Before installing the Deck Assembly, be sure to place the pin of LD-SW on Main CBA as shown in Fig. D8. Then, install the

49、Deck Assembly while aligning the hole of Cam Gear with the pin of LD- SW, the shaft of Cam Gear with the hole of LD-SW as shown in Fig. D8. (S-1) 1 Top Cover (S-1) (S-1) (S-1) Fig. D1 (S-2) (S-2) (S-2) 3 Top Bracket (L-2) (L-2) (L-1) Tray Panel 2 Front Assembly (B) (A) (A) (A) CN505 Fig. D2 (S-3) 4 Jack CBA Fig. D3 1-7-3H9330DC (S-4) (S-4) CN701 CN