Philips-VAD-8031-Service-Manual(1) 电路图 维修手册.pdf

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1、Published by GH03 0395 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 13680 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-Video RecorderDVD+RW Basic Engine VAD8031 ContentsPageContentsPage 1Technical Specifications2 2Safety Instructions, Warnings and Notes3 3Directions for Use(No DFU necessary)4 4Mechani

3、cal Instructions5 5Service Modes, Error Codes and Fault Finding 8 6Block Diagrams, Waveforms, Wiring Diagram13 Block Diagram13 7Electrical Diagrams and Print-LayoutsDiagram PWB Servo Board: OPU Interface(Diagram 1)1428-29 Servo Board: Cheetah(Diagram 2)1528-29 Servo Board: Laconic(Diagram 3)1628-29

4、Servo Board: Drivers(Diagram 4)1728-29 Servo Board: Centaurus(Diagram 5)2028-29 Servo Board: Power, Connectors (Diagram 6)2628-29 Servo Board: Tray Motor Connect.(Diagram 7)2728-29 8Alignments 31 9Circuit-, IC Descriptions and List of Abbreviations32 10Electrical Parts List47 RadioFans.CN 收音机爱 好者资料库

5、 Technical Specifications and Connection FacilitiesEN 2VAD 80311. 1.Technical Specifications and Connection Facilities 1.1VAD8031 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 rotat

6、ion, 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

7、for 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 Attention: Jumper has to be in position Master 1.3Read and Write Speeds Type of Disc (Function) Disc Rotation Speed Read Speed CDCAV 7x Read Speed DVDCAV 4x Write S

9、peed DVD+RW Write Speed DVD+R ZCAV 2.4x ZCAV 2.4x RadioFans.CN 收音机爱 好者资料库 Safety Instructions, Warnings and NotesEN 3VAD 80312. 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 i

10、solation transformer. Replace safety components, indicated 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 ret

11、urn the unit in its original condition. Pay, in particular, 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 s

12、econdary side: 1.Unplug the mains cord, and connect 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

13、unit when the resistance measurement is less than 1 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 p

14、ersonnel may remove the cover, or attempt to service 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 degre

15、e Figure 2-1 Class 1 Laser Product Note: Use of controls 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 electros

16、tatic discharges (ESD, symbol ). Careless handling 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: Comp

17、lete kit ESD3 (small tablemat, wristband, connection 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

18、 when you connect the player to the mains (even when 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 lightnin

19、g stroke and a stripe-marked printing on the printed 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 re

20、move the cover or attempt to service this device, due 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 RADIA

21、TION WHEN OPEN AVOID EXPOSURE TO BEAM ADVARSEL SYNLIG 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 OLE

22、T ALTTIINA NKYVLLE JA NKYMTTMLLE LASER STEILYLLE. L 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

23、 EN CAS DOUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU ! RadioFans.CN 收音机爱 好者资料库 Directions For UseEN 4VAD 80313. 3. Directions For Use Not applicable Mechanical InstructionsEN 5VAD 80314. 4.Mechanical Instructions Note that exploded views can be found in chapter 10 4.1General Follow the dismantling i

24、nstructions in described order. Do not place the unit with its PWB on a hard surface (e.g. table), as it could damage the components on it. Always place something soft (a towel or foam cushion) under it. Never touch the lens of the OPU. Take sufficient ESD measures during handling. 4.2Dismantling Yo

25、u can divide the Basic Engine into the following parts: 1.Loader (frame and tray, clamp) 2.PWB (or mono board) 3.DVD-Module (OPU, turntable motor, and sledge-motor assy) 4.Encasing Figure 4-1 Basic Engine dismantling (part1) 4.3Cabinet and Clamper Bridge Remove the encasing by releasing the four scr

26、ews 1, 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)! Remove the clamper bridge assy, by releasing the two screws 1, see figure 4-2 Figure 4-2 Remove Clamper Bridge 1 2 2 1 1 1 2 1 1 Mechanical InstructionsEN 6VAD 8

27、0314. 4.4Tray Remove encasing as as described in 4.3 Disengage the two holders that fix the tray 1, see figure 4- 3, and pull out the tray 2 Figure 4-3 Remove Tray 4.5Printed Board Note: After Exchanging the PWB (or the DVD-M) the complete drive has to be adjusted! Refer to chapter 8 for adjustment

28、instructions! Remove encasing and clamper bridge as described in 4.3 Disconnect the four flex foils from the PWB connectors Remove the 2 screws that hold the PWB, see figure 4-4 At assembly make sure that the 5 heat paths (gray rubber pieces) are placed on the ICs! Figure 4-4 Remove PWB 4.6DVD-M Cau

29、tion: 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. After Exchanging the DVD-M (or the PWB) the complete drive has to be adjusted! Refer to chapter 8 for adjustment instructions! Remove

30、 encasing, clamper bridge and PWB as described in 4-3 and 4-5 Remove the four screws 1, see figure 4-5. Now you can remove the DVDM Figure 4-5 Remove DVDM 1 1 2 1 2 1 2 1 1 1 1 Mechanical InstructionsEN 7VAD 80314. 4.7Sledge Motor Assembly Caution: Never try to align or repair the DVD-Module itself!

31、 Only the factory can do this properly. Service engineers are only allowed to exchange the sledge motor assy. Place the DVD-Module, with the laser facing downwards on a soft surface. Remove the three screws that hold the sledge-motor assy and lift the assy upwards. You can replace it now. Figure 4-6

32、 Remove Sledge Motor Assy 4.8Re-assembly To re-assemble the module, do all processes in reverse order. Take care of the following: Sledge-motor assy: Mesh the teeth of the sledge motor and sledge rack properly, during mounting of the sledge motor assy. Heat Paths: Put the 5 heat paths (gray rubber p

33、ieces) back to their position on the ICs, see figure 4-7. Complete module: Place all wires/cables in their original positions 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 4-7 Hea

34、t Paths Diagnostic SoftwareEN 8VAD 80315. 5.Diagnostic Software 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. 5.2Error Codes With DSW command 910 (Digital Board Chrys

35、alis) the set software can retrieve an overview of all occurred engine errors. 5.2.1Momentary 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 x02il

36、legal_parameter_errorParameter(s) not valid for 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 cal- ibration of the sledge 0 x06sledge_unstab

37、le_errorThe sledge detected unsta- ble control 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_

38、errorThe amount of focus retries expired 0 x0Bfocus_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 rang

39、e 0 x0Fradial_init_errorUnreliable signal scaling af- ter the radial initialisation 0 x10hf_pll_errorHF-decoder pll could not lock to HF signal 0 x11wobble_pll_errorWobble pll could not lock to wobble signal 0 x12subcode_timeout_errorSubcode information could not be read 0 x13subcode_notfound_errorR

40、equested subcode item could not be found 0 x14header_timeout_errorHeader information could not be read 0 x15adip_timeout_errorAdip information could not be read 0 x16adip_window_errorAdip address was not within expected window 0 x17adip_sync_errorNo adip sync was detected 0 x18atip_timeout_errorAtip

41、 information could not be read 0 x19atip_notfound_errorRequested atip item could not be found 0 x1Aatip_window_errorAtip address was not within expected window 0 x1Batip_sync_errorNo atip sync was detected 0 x1Ctray_errorTray could not be closed or opened within the timeout 0 x1Dseek_errorThe reques

42、ted seek couldnt be performed within the time- out 0 x1Eno_hf_present_errorAttempt to read from a blank area 0 x1Frecord_errorAn error occurred during the recording 0 x20illegal_stopaddress_errorThe requested stopaddress with modify-stop-address is not valid 0 x21no_disc_errorNo disc is detected 0 x

43、22not_initialised_errorThe system is not initialised (e.g. seek on unknown disc- type) 0 x23illegal_medium_errorBE detected an unsupported medium during disc recogni- tion 0 x24cd_frequency_errorMeasured HF frequency is not within CD frequency range 0 x25dvd_frequency_errorMeasured HF frequency is n

44、ot within DVD frequency range 0 x26re- served(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 doe

45、s not operate 0 x2Alaser_pll_errorLaser 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 power 0 x2Cjitter_optimisation_errorAn error occurred during op- timisation of the jitter 0 x2Dtilt_calibration_errorAn er

46、ror occurred during cal- ibration of the tilt frame 0 x2Ereserved Diagnostic SoftwareEN 9VAD 80315. This error is overwritten by the next player / inquiry command. 0 x2Ffrontend_offset_calib_erro r The offset in the frontend couldnt be calibrated 0 x30reserved 0 x31wsg_calculation_errorAn error occu

47、rred in the cal- culation of the write strategy 0 x32buffer_overrun_errorThe buffer input stream over- ran 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

48、a recording on this medium 0 x35opc_media_parameter_err or The media parameters (info in ATIP/ADIP) are invalid or not read 0 x36opc_record_power_errorThe final optimum power was not reached 0 x37opc_start_power_low_erro r OPC start power too low (op- timum power is higher) 0 x38opc_start_power_high

49、_err or OPC start power too high (optimum power is lower) 0 x39opc_power_calculation_er ror Error during OPC power cal- culation (samples are wrong) 0 x3Aopc_test_zone_full_errorOPC cant be performed be- cause test zone is full 0 x3Bopc_bad_jitter_measurem ent_error The jitter measurement dur- ing OPC samples readback failed 0 x3Copc_read_samples_errorAn error occurred during OPC readback sampling 0 x3Dropc_alpha_overflow_error The determined value for the optimum power is too high 0 x3Eropc_alpha_ref_current_er ror The alpha measurement ref- erence current is wrong (IAN)