Philips-VAD-8031-Service-Manual电路原理图.pdf

Published by GH03 0395 Service Pa©Copyright 2003 Philips Consumer ElecAll rights reserved. No part of this publretrieval system or transmitted, in anymechanical, photocopying, or otherwise wiDVD-Video Recorder DVD+RW Basic EngineVAD8031Servo Board: Tray Motor Connect.(Diagram 7) 27 28-298 Alignments 319 Circuit-, IC Descriptions and List of Abbreviations 3210 Electrical Parts List 47CE Printed in the Netherlands Subject to modification EN 3122 785 13680tronics B.V. Eindhoven, The Netherlands. ication may be reproduced, stored in a form or by any means, electronic, thout the prior permission of Philips.3 Directions for Use (No DFU necessary) 44 Mechanical Instructions 55 Service Modes, Error Codes and Fault Finding 86 Block Diagrams, Waveforms, Wiring Diagram 13Block Diagram 137 Electrical Diagrams and Print-Layouts Diagram PWBServo Board: OPU Interface (Diagram 1) 14 28-29Servo Board: Cheetah (Diagram 2) 15 28-29Servo Board: Laconic (Diagram 3) 16 28-29Servo Board: Drivers (Diagram 4) 17 28-29Servo Board: Centaurus (Diagram 5) 20 28-29Servo Board: Power, Connectors (Diagram 6) 26 28-29Contents Page Contents Page1 Technical Specifications 22 Safety Instructions, Warnings and Notes 3Technical Specifications and Connection FacilitiesEN 2 VAD 80311.1. Technical Specifications and Connection Facilities1.1 VAD8031 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, 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 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 Connector: 40-pin command and data transfer interfaceIDE Bus selection:Jumper Selection: 6-pin IDE Bus selectorAttention: Jumper has to be in position “Master“1.3 Read and Write SpeedsType of Disc (Function) Disc Rotation SpeedRead Speed CD CAV 7xRead Speed DVD CAV 4xWrite Speed DVD+RWWrite Speed DVD+RZCAV 2.4xZCAV 2.4xSafety Instructions, Warnings and Notes EN 3VAD 8031 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 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 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 secondary 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 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.2.1.2 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 UnitType : 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 specified 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 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, 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 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 'lightning 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.2.2.2 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 possible 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 LASERSTRÅLING VED ÅBNING UNDGÅ UDSÆTTELSE FOR STRÅLINGADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES UNNGÅ EKSPONERING FOR STRÅLEN VARNING SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD BETRAKTA EJ STRÅLENVARO! AVATT AESSA OLET ALTTIINA NÄKYVÄLLE JA NÄKYMÄTTÖMÄLLE LASER SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEÖFFNET 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 D'OUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU!Directions For UseEN 4 VAD 80313.3. Directions For UseNot applicableMechanical Instructions EN 5VAD 8031 4.4. Mechanical InstructionsNote that exploded views can be found in chapter 104.1 GeneralFollow the dismantling instructions 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.4.2 DismantlingYou 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)4.3 Cabinet and Clamper Bridge Remove the encasing by releasing the four screws 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 4-2Figure 4-2 Remove Clamper Bridge122111211Mechanical InstructionsEN 6 VAD 80314.4.4 Tray 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 2Figure 4-3 Remove Tray4.5 Printed BoardNote: After Exchanging the PWB (or the DVD-M) the complete drive has to be adjusted! Refer to chapter 8 for adjustment 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 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! Refer to chapter 8 for adjustment instructions! Remove 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 DVDMFigure 4-5 Remove DVDM11212121111Mechanical Instructions EN 7VAD 8031 4.4.7 Sledge Motor AssemblyCaution: 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. 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 Remove Sledge Motor Assy4.8 Re-assemblyTo 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 pieces) back to their position on the ICs, see figure 4-7.Complete module: Place all wires/cables in their original positionsEmergency 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 Heat PathsDiagnostic SoftwareEN 8 VAD 80315.5. Diagnostic Software5.1 GeneralPlease 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.5.2 Error CodesWith DSW command 910 (Digital Board Chrysalis) the set software can retrieve an overview of all occurred engine errors.5.2.1 Momentary Errors Byte 0: latest error:Overview of the BE error codes.errorcodeerror meaning0x00 no_error No error has occurred0x01 illegal_command_error Command not allowed in thisstate or unknown command0x02 illegal_parameter_error Parameter(s) not valid forthis command0x03 command_timeout_error The maximum executiontime for the command hasexceeded0x04 sledge_home_error The sledge could not bemoved home0x05 sledge_calibration_error An error occurred during cal-ibration of the sledge0x06 sledge_unstable_error The sledge detected unsta-ble control0x07 speed_timeout_error Spindle motor could notreach its target speed withintimeout0x08 speed_window_error Measured spinning speed isnot within expected window0x09 focus_timeout_error Focus could not be achievedwithin the timeout0x0A focus_retries_error The amount of focus retriesexpired0x0B focus_agc_error The focus agc results are outof range0x0C radial_timeout_error Servo didnt get on trackwithin the timeout0x0D radial_retries_error Servo didnt get on track afterseveral retries0x0E radial_agc_error The radial agc results are outof range0x0F radial_init_error Unreliable signal scaling af-ter the radial initialisation0x10 hf_pll_error HF-decoder pll could not lockto HF signal0x11 wobble_pll_error Wobble pll could not lock towobble signal0x12 subcode_timeout_error Subcode information couldnot be read0x13 subcode_notfound_error Requested subcode itemcould not be found0x14 header_timeout_error Header information could notbe read0x15 adip_timeout_error Adip information could not beread0x16 adip_window_error Adip address was not withinexpected window0x17 adip_sync_error No adip sync was detected0x18 atip_timeout_error Atip information could not beread0x19 atip_notfound_error Requested atip item couldnot be found0x1A atip_window_error Atip address was not withinexpected window0x1B atip_sync_error No atip sync was detected0x1C tray_error Tray could not be closed oropened within the timeout0x1D seek_error The requested seek couldntbe performed within the time-out0x1E no_hf_present_error Attempt to read from a blankarea0x1F record_error An error occurred during therecording0x20 illegal_stopaddress_error The requested stopaddresswith modify-stop-address isnot valid0x21 no_disc_error No disc is detected0x22 not_initialised_error The system is not initialised(e.g. seek on unknown disc-type)0x23 illegal_medium_error BE detected an unsupportedmedium during disc recogni-tion0x24 cd_frequency_error Measured HF frequency isnot within CD frequencyrange0x25 dvd_frequency_error Measured HF frequency isnot within DVD frequencyrange0x26 re-served(non_existing_bca_error)Attempt to read non-existingbca information0x27 reserved(bca_read_error) An error occurred duringreading of bca information0x28 selftest_error An error occurred during theself-test of the BE0x29 i2c_error The I2C interface does notoperate0x2A laser_pll_error Laser control pll did not lockor lost lock on write clock0x2B laser_forward_sense_errorForward sense value didntchange with changing laserpower0x2C jitter_optimisation_error An error occurred during op-timisation of the jitter0x2D tilt_calibration_error An error occurred during cal-ibration of the tilt frame0x2E reservedDiagnostic Software EN 9VAD 8031 5.This error is overwritten by the next player / inquiry command.0x2F frontend_offset_calib_errorThe offset in the frontendcouldnt be calibrated0x30 reserved0x31 wsg_calculation_error An error occurred in the cal-culation of the write strategy0x32 buffer_overrun_error The buffer input stream over-ran the buffer output stream0x33 return_value_invalid_error The requested information isnot available for this inquiry0x34 illegal_recording_speed_errorThe selected speed is not al-lowed for a recording on thismedium0x35 opc_media_parameter_errorThe media parameters (infoin ATIP/ADIP) are invalid ornot read0x36 opc_record_power_error The final optimum power wasnot reached0x37 opc_start_power_low_errorOPC start power too low (op-timum power is higher)0x38 opc_start_power_high_errorOPC start power too high(optimum power is lower)0x39 opc_power_calculation_errorError during OPC power cal-culation (samples are wrong)0x3A opc_test_zone_full_error OPC cant be performed be-cause test zone is full0x3B opc_bad_jitter_measurement_errorThe jitter measurement dur-ing OPC samples readbackfailed0x3C opc_read_samples_error An error occurred duringOPC readback sampling0x3D ropc_alpha_overflow_error The determined value for theoptimum power is too high0x3E ropc_alpha_ref_current_errorThe alpha measurement ref-erence current is wrong (IAN)0x3F ropc_alpha_gain_error The alpha measurement al-pha gain is wrong0x40 beta_over_under_flow_errorDuring the walking OPC abeta over-/under-flow wasdetected0x41 not_enough_cal