Philips-VAD-8041-Service-Manual电路原理图.pdf

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1、Published by GH03 0495 Service PaCopyright 2004 Philips Consumer ElecAll rights reserved. No part of this publretrieval system or transmitted, in anymechanical, photocopying, or otherwise wiDVD-Video Recorder DVD+RW Basic EngineVAD8041Servo Board: Laconic (Diagram 3) 17Servo Board: Drivers (Diagram

2、4) 18Servo Board: Centaurus (Diagram 5) 21Servo Board: Power, Connectors (Diagram 6) 26Servo Board: Tray Motor Conn. (Diagram 7) 278 Alignments (No alignments necessary) 319 Circuit-, IC Descriptions and List of Abbreviations10 Electrical Parts ListCE Printed in the Netherlands Subject to modificati

3、on EN 3122 785 14850tronics B.V. Eindhoven, The Netherlands. ication may be reproduced, stored in a form or by any means, electronic, thout the prior permission of Philips.33472 Safety Instructions, Warnings and Notes 33 Directions for Use(No DFU necessary) 44 Mechanical Instructions 55 Service Mode

4、s, Error Codes and Fault Finding 86 Block Diagrams, Waveforms, Wiring Diagram 13Block Diagram 13Testpoints Overview 147 Electrical Diagrams and Print-Layouts DiagramServo Board: OPU Interface (Diagram 1) 15Servo Board: Cheetah (Diagram 2) 16Contents Page1 Technical Specifications 2Technical Specific

5、ations and Connection FacilitiesEN 2 VAD80411.1. Technical Specifications and Connection Facilities1.1 VAD8041 functionality: Loading of 8 cm and 12 cm discs by a motorized trayDisc type recognition and in case of a DVD+RW disc laser power calibrationServo control for disc rotation, sledge movements

6、, tilt, focus and actuator positionEFM+ encoding / decoding for DVD, and EFM decoding for CDWrites and read DVD+RW discs and reads DVD, CD and CD-R/RW discsLinking control, header insertion and sector number updating at recordInterfacing to the MPEG back-end for control and for dataThe back-end has

7、to provide MPEG data processing, data buffering, construction of logical format for Lead-in, Data area and Lead-out part of the DVD+RW disc1.2 ConnectionsThe following interfaces are provided for connecting the drive to the MPEG back-end Application:Power Connector: 4-pin supply interfaceIDE Connect

8、or: 40-pin command and data transfer interfaceIDE Bus selection:Jumper Selection: 6-pin IDE Bus selector1.3 Read and Write SpeedsType of Disc (Function) Disc Rotation SpeedRead Speed CD CAV 7xRead Speed DVD CAV 4xWrite Speed DVD+RW ZCAV 2.4xWrite Speed DVD+R ZCAV 2.4xSafety Instructions, Warnings an

9、d Notes EN 3VAD8041 2.2. Safety Instructions, Warnings and Notes2.1 Safety Instructions2.1.1 General SafetySafety regulations require that during a repair:Connect the unit to the mains via an isolation transformer.Replace safety components, indicated by the symbol , only by components identical to t

10、he 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 particular, attention to the following points:Route the wires

11、/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 a wire between the two pins of the mains plug.2. Set the mai

12、ns 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 M. 5. Verify this, before you return the unit to the custom

13、er/user (ref. UL-standard no. 1492).6. Switch the unit off, and remove the wire between the two pins of the mains plug.2.1.2 Laser SafetyThis unit employs a laser. Only qualified service personnel may remove the cover, or attempt to service this device (due to possible eye injury).Laser Device UnitT

14、ype : Semiconductor laser GaAlAsWavelength : 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 degreeFigure 2-1 Class 1 Laser ProductNote: Use of controls or adjustments or performance of procedure other than those s

15、pecified herein, may result in hazardous radiation exposure. Avoid direct exposure to beam.2.2 Warnings2.2.1 GeneralAll ICs and many other semiconductors are susceptible to electrostatic discharges (ESD, symbol ). Careless handling during repair can reduce life drastically. Make sure that, during re

16、pair, 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, connection box, extension cable and earth cable) 4822 310 10671. Wristband te

17、ster 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 when the player is off!). It is possible to touch copper tracks and/or c

18、omponents 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 printed wiring board, indicate the primary side of the power supply.Never r

19、eplace modules, or components, while the unit is on.2.2.2 LaserThe 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, due to possible eye injury.Repair handling should take place as much as p

20、ossible with a disc loaded inside the player.Text below is placed inside the unit, on the laser cover shield:Figure 2-2 Warning textCAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM ADVARSEL SYNLIG OG USYNLIG LASERSTRLING VED BNING UNDG UDSTTELSE FOR STRLINGADVARSEL SYNL

21、IG OG USYNLIG LASERSTRLING NR DEKSEL PNES UNNG EKSPONERING FOR STRLEN VARNING SYNLIG OCH OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD BETRAKTA EJ STRLENVARO! AVATT AESSA OLET ALTTIINA NKYVLLE JA NKYMTTMLLE LASER STEILYLLE. L KATSO STEESEEN VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKU

22、NG GEFFNET NICHT DEM STRAHL AUSSETSENDANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM ATTENTION RAYO NNEMENT LASER VISIBLE ET INVISIBLE EN CAS DOUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU!Directions For UseEN 4 VAD80413.3. Directions For UseNot applicableMechanica

23、l Instructions EN 5VAD8041 4.4. Mechanical InstructionsNote that exploded views can be found in chapter 104.1 GeneralFollow the dismantling instructions in described order.Never touch the lens of the OPU.Take sufficient ESD measures during handling.4.2 DismantlingYou can divide the Basic Engine into

24、 the following parts:1. Loader (frame and tray)2. PWB3. DVD-Mechanism (OPU, traverse with turntable motor and sledge-motor assy)4. Encasing 4.3 Cabinet Remove the encasing by releasing the four screws at the underside of the drive, see figure 4-1 Make sure that you do not lose the 5 heat paths (gray

25、 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 clamping mechanism is established.Figure 4-1 Basic Engine dismantling (part1)221Mechanical InstructionsEN 6

26、 VAD80414.4.4 Tray 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 2Figure 4-2 Remove Tray4.5 Printed BoardNote: After exchanging the PWB (or the DVD-M) the complete drive has to be adjusted! Run command 931 of DSW (AdjustLa

27、serControl). 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 that hold the PWB, see figure 4-3 Remove the PCB Remove the yellow plate if needed by releasing the 2 snap hooksFi

28、gure 4-3 Remove PWB4.6 DVD-MCaution: 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! Run command 931 of DSW (

29、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 DVDM11212121111Figure 4-4 Remove DVDMMechanical Instructions EN 7VAD8041 4.4.7 Sledge Motor AssemblyCaution: Never try to align or repa

30、ir 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 that hold the sledge motor, see figure 4-5 Remove the sledge motorFigure 4-5 Remove Sledge Motor Assy4.8 Re-assemblyTo re-assembl

31、e the module, do all processes in reverse order.Take care of the following:Complete module: Place all wires/cables in their original positionHeat Paths: Put the 5 heat 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 e

32、mergency tray opener is covered by adhesive tape!Jumper selection: Jumper has to be in position “Master“!Figure 4-6 Heat PathService Modes, Error Codes and Fault FindingEN 8 VAD80415.5. Service Modes, Error Codes and Fault Finding5.1 GeneralPlease refer to the service manual of the recorder for a de

33、scription of the complete Diagnostics Software. In this manual only drive specific error codes are explained.5.2 Self testA power on self-test is incorporated in 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

34、-1 Example, nucleus 902 showing no communication with the OPUFollowing table gives the output format of this nucleus.Figure 5-2 Self test ResultsBitByte0 tray* ttm* pcs*laser forward sense1 real dsp* hdr80 cheetah laconic elantec2 eepromeeprom checksum*eeprom empty* iic*error code not detected in VA

35、D8031/VAD8041Forward Sense Tests if the forward sense value measured during drive startup is within normal rangeHDR80 Performs a read/write test on a register (HDR 80 is an internal module of Centaurus)Cheetah Performs a read/write test on a registerLaconic Read the IC version (fixed) and checks if

36、its okElantec Performs a read/write test on a registerEeprom Performs a read/write test on an addressI2C Tries addressing all I2C devices in the system - if one fails, this test failsPlease note that if the I2C test fails, most other IC tests will fail as well.3210ReservedReservedReserved7654Service

37、 Modes, Error Codes and Fault Finding EN 9VAD8041 5.5.3 Error CodesWith DSW command 910 (Digital Board Chrysalis) the set software can retrieve an overview of all occurred engine errors.5.3.1 Momentary Errors Byte 0: latest error:Overview of the BE error codes.errorcodeerror meaning0x00 no_error No

38、error has occurred0x01 illegal_command_error Command not allowed in thisstate or unknown command0x02 illegal_parameter_error Parameter(s) not valid for thiscommand0x03 command_timeout_error The maximum execution time forthe command has exceeded0x04 sledge_home_error The sledge could not be movedhome

39、0x05 sledge_calibration_error An error occurred during calibra-tion of the sledge0x06 sledge_unstable_error The sledge detected unstablecontrol0x07 speed_timeout_error Spindle motor could not reach itstarget speed within timeout0x08 speed_window_error Measured spinning speed is notwithin expected wi

40、ndow0x09 focus_timeout_error Focus could not be achievedwithin the timeout0x0A focus_retries_error The amount of focus retries ex-pired0x0B focus_agc_error The focus agc results are out ofrange0x0C radial_timeout_error Servo didnt get on track withinthe timeout0x0D radial_retries_error Servo didnt g

41、et on track afterseveral retries0x0E radial_agc_error The radial agc results are out ofrange0x0F radial_init_error Unreliable signal scaling after theradial initialisation0x10 hf_pll_error HF-decoder pll could not lock toHF signal0x11 wobble_pll_error Wobble pll could not lock to wob-ble signal0x12

42、subcode_timeout_error Subcode information could notbe read0x13 subcode_notfound_error Requested subcode item couldnot be found0x14 header_timeout_error Header information could not beread0x15 adip_timeout_error Adip information could not beread0x16 adip_window_error Adip address was not within ex-pe

43、cted window0x18 atip_timeout_error Atip information could not beread0x19 atip_notfound_error Requested atip item could not befound0x1A atip_window_error Atip address was not within ex-pected window0x1B atip_sync_error No atip sync was detected0x1C tray_error Tray could not be closed oropened within

44、the timeout0x1D seek_error The requested seek couldnt beperformed within the timeout0x1E no_hf_present_error Attempt to read from a blank area0x1F record_error An error occurred during the re-cording0x20 illegal_stopaddress_error The requested stopaddress withmodify-stop-address is not valid0x21 no_

45、disc_error No disc is detected0x22 not_initialised_error The system is not initialised (e.g.seek on unknown disctype)0x23 illegal_medium_error BE detected an unsupported me-dium during disc recognition0x24 cd_frequency_error Measured HF frequency is notwithin CD frequency range0x25 dvd_frequency_err

46、or Measured HF frequency is notwithin DVD frequency range0x26 re-served(non_existing_bca_error)Attempt to read non-existing bcainformation0x27 reserved(bca_read_error) An error occurred during readingof bca information0x28 selftest_error An error occurred during the self-test of the BE0x29 i2c_error

47、 The I2C interface does not oper-ate0x2A laser_pll_error Laser control pll did not lock orlost lock on write clock0x2B laser_forward_sense_errorForward sense value didntchange with changing laser pow-er0x2C jitter_optimisation_error An error occurred during optimis-ation of the jitter0x2D tilt_calib

48、ration_error An error occurred during calibra-tion of the tilt frame0x2E reserved0x2F frontend_offset_calib_errorThe offset in the frontend couldntbe calibrated0x30 reserved0x31 wsg_calculation_error An error occurred in the calcula-tion of the write strategy0x32 buffer_overrun_error The buffer inpu

49、t stream overranthe buffer output stream0x33 return_value_invalid_error The requested information is notavailable for this inquiry0x34 illegal_recording_speed_errorThe selected speed is not al-lowed for a recording on this me-dium0x35 opc_media_parameter_errorThe media parameters (info inATIP/ADIP) are invalid or notread0x36 opc_record_power_error The final optimum power was notreached0x37 opc_start_power_low_errorOPC start power too low (opti-mum power is higher)0x38 opc_start_power_high_errorOPC start power too