Philips-VAD-8041-Service-Manual(1) 电路图 维修手册.pdf

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1、Published by GH03 0495 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 14850 Copyright 2004 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-Video RecorderDVD+RW Basic Engine VAD8041 ContentsPage 1Technical Specifications2 2Safety Instructions, Warnings and Notes3 3Directions for Use(No DFU necessary)4 4Mechanical Instruct

3、ions5 5Service Modes, Error Codes and Fault Finding 8 6Block Diagrams, Waveforms, Wiring Diagram13 Block Diagram13 Testpoints Overview 14 7Electrical Diagrams and Print-LayoutsDiagram Servo Board: OPU Interface (Diagram 1)15 Servo Board: Cheetah(Diagram 2)16 Servo Board: Laconic (Diagram 3)17 Servo

4、Board: Drivers (Diagram 4)18 Servo Board: Centaurus (Diagram 5)21 Servo Board: Power, Connectors (Diagram 6)26 Servo Board: Tray Motor Conn. (Diagram 7)27 8Alignments (No alignments necessary)31 9Circuit-, IC Descriptions and List of Abbreviations33 10 Electrical Parts List47 RadioFans.CN 收音机爱 好者资料库

5、 Technical Specifications and Connection FacilitiesEN 2VAD80411. 1.Technical Specifications and Connection Facilities 1.1VAD8041 functionality: Loading of 8 cm and 12 cm discs by a motorized tray Disc type recognition and in case of a DVD+RW disc laser power calibration Servo control for disc rotati

6、on, sledge movements, tilt, focus and actuator position EFM+ encoding / decoding for DVD, and EFM decoding for CD Writes and read DVD+RW discs and reads DVD, CD and CD-R/RW discs Linking control, header insertion and sector number updating at record Interfacing to the MPEG back-end for control and f

7、or data The back-end has to provide MPEG data processing, data buffering, construction of logical format for Lead-in, Data area and Lead-out part of the DVD+RW disc 1.2Connections The following interfaces are provided for connecting the drive to the MPEG back-end Application: Power Connector: 4-pin

8、supply interface IDE Connector: 40-pin command and data transfer interface IDE Bus selection: Jumper Selection: 6-pin IDE Bus selector 1.3Read and Write Speeds Type of Disc (Function) Disc Rotation Speed Read Speed CDCAV 7x Read Speed DVDCAV 4x Write Speed DVD+RWZCAV 2.4x Write Speed DVD+RZCAV 2.4x

9、RadioFans.CN 收音机爱 好者资料库 Safety Instructions, Warnings and NotesEN 3VAD80412. 2.Safety Instructions, Warnings and Notes 2.1Safety Instructions 2.1.1General Safety Safety regulations require that during a repair: Connect the unit to the mains via an isolation transformer. Replace safety components, in

10、dicated by the symbol , only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard. Safety regulations require that after a repair, you must return the unit in its original condition. Pay, in par

11、ticular, attention to the following points: Route the wires/cables correctly, and fix them with the mounted cable clamps. Check the insulation of the mains lead for external damage. Check the electrical DC resistance between the mains plug and the secondary side: 1.Unplug the mains cord, and connect

12、 a wire between the two pins of the mains plug. 2.Set the mains switch to the on position (keep the mains cord unplugged!). 3.Measure the resistance value between the mains plug and the front panel, controls, and chassis bottom. 4.Repair or correct unit when the resistance measurement is less than 1

13、 M. 5.Verify this, before you return the unit to the customer/ user (ref. UL-standard no. 1492). 6.Switch the unit off, and remove the wire between the two pins of the mains plug. 2.1.2Laser Safety This unit employs a laser. Only qualified service personnel may remove the cover, or attempt to servic

14、e this device (due to possible eye injury). Laser Device Unit Type: Semiconductor laser GaAlAs Wavelength: 650 nm (DVD) : 780 nm (VCD/CD) Output Power: 20 mW (DVD+RW writing) : 0.8 mW (DVD reading) : 0.3 mW (VCD/CD reading) Beam divergence: 60 degree Figure 2-1 Class 1 Laser Product Note: Use of con

15、trols or adjustments or performance of procedure other than those specified herein, may result in hazardous radiation exposure. Avoid direct exposure to beam. 2.2Warnings 2.2.1General All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD, symbol ). Careless handling

16、during repair can reduce life drastically. Make sure that, during repair, you are at the same potential as the mass of the set by a wristband with resistance. Keep components and tools at this same potential. Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connectio

17、n box, extension cable and earth cable) 4822 310 10671. Wristband tester 4822 344 13999. Be careful during measurements in the live voltage section. The primary side of the power supply (pos. 1005), including the heatsink, carries live mains voltage when you connect the player to the mains (even whe

18、n the player is off!). It is possible to touch copper tracks and/or components in this unshielded primary area, when you service the player. Service personnel must take precautions to prevent touching this area or components in this area. A lightning stroke and a stripe-marked printing on the printe

19、d wiring board, indicate the primary side of the power supply. Never replace modules, or components, while the unit is on. 2.2.2Laser The use of optical instruments with this product, will increase eye hazard. Only qualified service personnel may remove the cover or attempt to service this device, d

20、ue to possible eye injury. Repair handling should take place as much as possible with a disc loaded inside the player. Text below is placed inside the unit, on the laser cover shield: Figure 2-2 Warning text CAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM ADVARSEL SYNL

21、IG OG USYNLIG LASERSTRLING VED BNING UNDG UDSTTELSE FOR STRLING ADVARSEL SYNLIG OG USYNLIG LASERSTRLING NR DEKSEL PNES UNNG EKSPONERING FOR STRLEN VARNING SYNLIG OCH OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD BETRAKTA EJ STRLEN VARO! AVATT AESSA OLET ALTTIINA NKYVLLE JA NKYMTTMLLE LASER STEILYLLE. L

22、 KATSO STEESEEN VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEFFNET NICHT DEM STRAHL AUSSETSEN DANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM ATTENTION RAYONNEMENT LASER VISIBLE ET INVISIBLE EN CAS DOUVERTURE EXPOSITION DANGEREUSE AU FAISCEA

23、U ! RadioFans.CN 收音机爱 好者资料库 Directions For UseEN 4VAD80413. 3. Directions For Use Not applicable Mechanical InstructionsEN 5VAD80414. 4.Mechanical Instructions Note that exploded views can be found in chapter 10 4.1General Follow the dismantling instructions in described order. Never touch the lens

24、of the OPU. Take sufficient ESD measures during handling. 4.2Dismantling You can divide the Basic Engine into the following parts: 1.Loader (frame and tray) 2.PWB 3.DVD-Mechanism (OPU, traverse with turntable motor and sledge-motor assy) 4.Encasing 4.3Cabinet Remove the encasing by releasing the fou

25、r screws at the underside of the drive, see figure 4-1 Make sure that you do not lose the 5 heat paths (gray rubber pieces that conduct the heat from the ICs to the case)! If you need to measure on the PCB while a disc is inserted, the top case should be applied again onto the drive. In this way the

26、 clamping mechanism is established. Figure 4-1 Basic Engine dismantling (part1) 2 2 1 Mechanical InstructionsEN 6VAD80414. 4.4Tray Remove encasing as as described in 4.3 Disengage the two holders that fix the tray 1, see figure 4- 2, and pull out the tray 2 Figure 4-2 Remove Tray 4.5Printed Board No

27、te: After exchanging the PWB (or the DVD-M) the complete drive has to be adjusted! Run command 931 of DSW (AdjustLaserControl). Refer to chapter 8 for adjustment instructions! Remove encasing as described in 4.3 Disconnect the 2 flex foils from the PWB connectors and the OPU flex Remove the 2 screws

28、 that hold the PWB, see figure 4-3 Remove the PCB Remove the yellow plate if needed by releasing the 2 snap hooks Figure 4-3 Remove PWB 4.6DVD-M Caution: Never try to align or repair the DVD-Module itself! Only the factory can do this properly. Service engineers are only allowed to exchange the sled

29、ge motor assy. After Exchanging the DVD-M (or the PWB) the complete drive has to be adjusted! Run command 931 of DSW (AdjustLaserControl). Refer to chapter 8 for adjustment instructions! Remove PCB as described in 4.5 Remove the four screws 1, see figure 4-4. Now you can remove the DVDM Figure 4-4 R

30、emove DVDM 1 1 2 1 2 1 2 1 1 1 1 Mechanical InstructionsEN 7VAD80414. 4.7Sledge Motor Assembly Caution: Never try to align or repair the DVD-Module itself! Only the factory can do this properly. Service engineers are only allowed to exchange the sledge motor assy. Eject the tray. Remove the 2 screws

31、 that hold the sledge motor, see figure 4-5 Remove the sledge motor Figure 4-5 Remove Sledge Motor Assy 4.8Re-assembly To re-assemble the module, do all processes in reverse order. Take care of the following: Complete module: Place all wires/cables in their original position Heat Paths: Put the 5 he

32、at paths (gray rubber pieces) back to their position on the ICs, see figure 4-6. Emergency opening slot: Be sure that the slot for the emergency tray opener is covered by adhesive tape! Jumper selection: Jumper has to be in position Master! Figure 4-6 Heat Path Service Modes, Error Codes and Fault F

33、indingEN 8VAD80415. 5.Service Modes, Error Codes and Fault Finding 5.1General Please refer to the service manual of the recorder for a description of the complete Diagnostics Software. In this manual only drive specific error codes are explained. 5.2Self test A power on self-test is incorporated in

34、the software of this drive. With DSW command 902 (Chrysalis Mpeg Codec) the set software can retrieve the result of the self-test. Figure 5-1 Example, nucleus 902 showing no communication with the OPU Following table gives the output format of this nucleus. Figure 5-2 Self test Results Bit Byte 0tra

35、y*ttm*pcs* laser forward sense 1real dsp*hdr80cheetahlaconicelantec 2eeprom eeprom checksum* eeprom empty*iic *error code not detected in VAD8031/VAD8041 Forward Sense Tests if the forward sense value measured during drive startup is within normal range HDR80Performs a read/write test on a register

36、(HDR 80 is an internal module of Centaurus) CheetahPerforms a read/write test on a register LaconicRead the IC version (fixed) and checks if its ok ElantecPerforms a read/write test on a register EepromPerforms a read/write test on an address I2CTries addressing all I2C devices in the system - if on

37、e fails, this test fails Please note that if the I2C test fails, most other IC tests will fail as well. 3210 Reserved Reserved Reserved 7654 Service Modes, Error Codes and Fault FindingEN 9VAD80415. 5.3Error Codes With DSW command 910 (Digital Board Chrysalis) the set software can retrieve an overvi

38、ew of all occurred engine errors. 5.3.1Momentary Errors Byte 0: latest error: Overview of the BE error codes. error code errormeaning 0 x00no_errorNo error has occurred 0 x01illegal_command_errorCommand not allowed in this state or unknown command 0 x02illegal_parameter_errorParameter(s) not valid f

39、or this command 0 x03command_timeout_errorThe maximum execution time for the command has exceeded 0 x04sledge_home_errorThe sledge could not be moved home 0 x05sledge_calibration_errorAn error occurred during calibra- tion of the sledge 0 x06sledge_unstable_errorThe sledge detected unstable control

40、0 x07speed_timeout_errorSpindle motor could not reach its target speed within timeout 0 x08speed_window_errorMeasured spinning speed is not within expected window 0 x09focus_timeout_errorFocus could not be achieved within the timeout 0 x0Afocus_retries_errorThe amount of focus retries ex- pired 0 x0

41、Bfocus_agc_errorThe focus agc results are out of range 0 x0Cradial_timeout_errorServo didnt get on track within the timeout 0 x0Dradial_retries_errorServo didnt get on track after several retries 0 x0Eradial_agc_errorThe radial agc results are out of range 0 x0Fradial_init_errorUnreliable signal sca

42、ling after the radial initialisation 0 x10hf_pll_errorHF-decoder pll could not lock to HF signal 0 x11wobble_pll_errorWobble pll could not lock to wob- ble signal 0 x12subcode_timeout_errorSubcode information could not be read 0 x13subcode_notfound_errorRequested subcode item could not be found 0 x1

43、4header_timeout_errorHeader information could not be read 0 x15adip_timeout_errorAdip information could not be read 0 x16adip_window_errorAdip address was not within ex- pected window 0 x17adip_sync_errorNo adip sync was detected 0 x18atip_timeout_errorAtip information could not be read 0 x19atip_no

44、tfound_errorRequested atip item could not be found 0 x1Aatip_window_errorAtip address was not within ex- pected window 0 x1Batip_sync_errorNo atip sync was detected 0 x1Ctray_errorTray could not be closed or opened within the timeout 0 x1Dseek_errorThe requested seek couldnt be performed within the

45、timeout 0 x1Eno_hf_present_errorAttempt to read from a blank area 0 x1Frecord_errorAn error occurred during the re- cording 0 x20illegal_stopaddress_errorThe requested stopaddress with modify-stop-address is not valid 0 x21no_disc_errorNo disc is detected 0 x22not_initialised_errorThe system is not

46、initialised (e.g. seek on unknown disctype) 0 x23illegal_medium_errorBE detected an unsupported me- dium during disc recognition 0 x24cd_frequency_errorMeasured HF frequency is not within CD frequency range 0 x25dvd_frequency_errorMeasured HF frequency is not within DVD frequency range 0 x26re- serv

47、ed(non_existing_bca_ error) Attempt to read non-existing bca information 0 x27reserved(bca_read_error)An error occurred during reading of bca information 0 x28selftest_errorAn error occurred during the self- test of the BE 0 x29i2c_errorThe I2C interface does not oper- ate 0 x2Alaser_pll_errorLaser

48、control pll did not lock or lost lock on write clock 0 x2Blaser_forward_sense_erro r Forward sense value didnt change with changing laser pow- er 0 x2Cjitter_optimisation_errorAn error occurred during optimis- ation of the jitter 0 x2Dtilt_calibration_errorAn error occurred during calibra- tion of t

49、he tilt frame 0 x2Ereserved 0 x2Ffrontend_offset_calib_erro r The offset in the frontend couldnt be calibrated 0 x30reserved 0 x31wsg_calculation_errorAn error occurred in the calcula- tion of the write strategy 0 x32buffer_overrun_errorThe buffer input stream overran the buffer output stream 0 x33return_value_invalid_error The requested information is not available for this inquiry 0 x34illegal_recording_speed_e rror The selected speed is not al- lowed for a recording on this me- dium 0 x35opc_media_parameter_err or The media parameters (info in ATIP/ADIP) are invalid or