Philips-SD-4.00-SACH-Service-Manual电路原理图.pdf

Published by PF0265 Service Singap©Copyright 2002 Philips Consumer EAll rights reserved. No part of this publretrieval system or transmitted, in anymechanical, photocopying, or otherwDVD-Video Player DVD Module SD-4.00SA_CHFront-End Processor Iguana (Diagram M2) 38 47-49Front-End Loader Interface (Diagram M3) 39 47-49Back-End Memory (Diagram M4) 40 47-49Memory and Service Interface (Diagram M5) 41 47-49Back-End Host Processor (Diagram M6) 42 47-49Power Supply CVBS;RGB / YUV.RGB / YUV component video signals share the same lines.Therefore, the module Technical Specifications EN 5SD-4.00SA_CH 1.is unable to output both RGB and YUV simultanious.Specification. : The output comply fully with PQR-IMSClass III.: DC level - sync bottom at 0.43V ±10% (100% white) and 0.9V ±10% (black).: Output impedance - 75Ohm.: The following specification points are significantly better then PQR_IMS: SNR on all video outputs is better then 65dB.: Video bandwidth - 8MHz (±3dB) / 16MHz (±3dB) for STi5588 progressive scan.Safety Instructions, Warnings, and NotesEN 6 SD-4.00SA_CH2.2. 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 g19, 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 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.2.2 Warnings2.2.1 GeneralAll ICs and many other semiconductors are susceptible to electrostatic discharges (ESD, g34). 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 2.2.3 NotesDolbyManufactered under licence from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. ©1992-1997 Dolby Laboratories, Inc. All rights reserved.Figure 2-3 TrusurroundTRUSURROUND, SRS and symbol (fig 2-4) are trademarks of SRS Labs, Inc. TRUSURROUND technology is manufactured under licence frm SRS labs, Inc.Figure 2-4 CAUTION 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 Use EN 7SD-4.00SA_CH 3.3. Directions for UseThere is no DFU availableMechanical InstructionsEN 8 SD-4.00SA_CH4.4. Mechanical Instructions4.1 Dismantling InstructionCL 26532053_072.eps220502Figure 4-1 Mechanical Instructions EN 9SD-4.00SA_CH 4.4.1.1 Dismantling of DVD Mono Board1. See Figure 4-1 for dismantling of DVD module.2. Unlock the OPU conn 1100, Sledge motor conn 1301 and disc motor conn 1300 and remove the Flex connections.3. Remove the wire connection to Tray motor conn 1302.4. Remove 4 screws 10 to 13.5. Remove the Mono BoardNote: Flex cables are very fragile,care should be taken during dismounting and when mounting,ensure that Flex cables are inserted properly into the Flex socket and locked.4.1.2 Opening of Tray ManuallyFigure 4-2 Figure 4-3 It is possible to open the tray manually by moving the Slider in the position as shown in Figure 4-2 and Figure 4-3Figure 4-3.The Tray is now disengaged and can be pulled outwards.When no disc is loaded, unlocking the Tray can also be done by moving the Slider A in the direction as shown in Figure 4-4 and pull the Tray outwards. Figure 4-4 CL 06532147_002.eps151100CL 06532147_003.eps151100CL 06532147_043.eps231100When the slider A is not accessible when a disc is loaded, unlock the tray by pressing the slider B inward as shown in Mechanical InstructionsEN 10 SD-4.00SA_CH4.4.2 Service Hints4.2.1 DVD ModuleThis module can be repaired as follows:1. The VAL6011/14 is a combination of loading mechanism and DVD-mechanism. Both the mechanism is not a repairable unit and in case of failure it has to be replaced with a new loader VAL6011/14.Note: When replacing with a new VAL6011/14 two solder joints have to be removed after connecting the OPU flex foil to the board.The solder joints which shortcircuits the laser diodes to ground are for protection against ESD. Refer to Figure 4-5and Figure 4-6 for location of solder points.Figure 4-5 Figure 4-6 2. The mono board has to be repaired down to component level. Repair handling of the monoboard requires a workshop with sophisticated desoldering tools.