Philips-LX-3950-W-Service-Manual电路原理图.pdf

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1、CLASS 1LASER PRODUCTService ManualServiceServiceServiceLX3950W/01TABLE OF CONTENTSPageLocation of pc boards fr Reparaturen sind Original-Ersatzteile zu verwenden.Sicherheitsbauteile sind durch das Symbol !markiert.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni original

2、i e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.Componenty di sicurezza sono marcati con !GBAfter servicing and before returning set to customer perform a leakagecurrent measurement test from all exposed metal parts to earth ground toassure no shock hazard exist. The leakag

3、e current must not exceed0.5mA.2-1 2-1DISMANTLING INSTRUCTIONSDismantling of the DVD Loader1) The tray can be manually open by inserting a minusscrew driver and push the lever in the direction as shownin Figure 1 to unlock the tray before sliding it out.2) Slide out the tray and remove the Cover Tra

4、y assembly(pos 110 + pos 111 + pos 112) as shown in Figure 2.3) Loosen 5 screws to remove the Cover Top (pos 240).- 1 screw each on the left & right side (pos 272)- 3 screws on the rear (pos 270)Dismantling of the Tuner Module & Speaker Connector Board1) Loosen 2 screws A (see Figure 4) to remove th

5、e TunerModule (pos 1105).2) When the Tuner Module (pos 1105) become defectiveand need to be replaced, make sure the Lug of the TunerModule is bend as shown in Figure 3.Note : The Lug of the Tuner Module is purposely bend inthis way (see Figure 3) to prevent damage to theFlex Cable.3) Loosen 2 screws

6、 B (see Figure 4) to remove the SpeakerConnector Board (pos 1102).1) Loosen 4 screws E and uncatch C1 (see Figure 5) toremove the PSU Board (pos 1104).2) Loosen 4 screws F (see Figure 5) to remove the AmplifierBoard (pos 1107).3) Loosen 2 screws G (see Figure 5) to remove the SD6.1RX Board (1103-100

7、1).Dismantling of the PSU Board, Amplifier Board, SD6.1 RX Board & AV BoardFigure 64) Loosen 4 screws D (see Figure 5) to remove the DVDLoader (pos 1103-0001).Figure 4Figure 5Figure 7Figure 3Figure 2Figure 14) Loosen 2 screws H and uncatch C2 (see Figure 6) toremove the Shield AV (pos 180).5) Loosen

8、 5 screws C (see Figure 4) and uncatch 2 catchesC3 (see Figure 7) to remove the AV Board (pos 1101).2-2 2-2SERVICE POSITIONSSD6.1 RX Board AV Board Thick Insulation Sheet Speaker Connector BoardAmplifier BoardThick Insulation Sheet3-1Variousother TestsActivated with ACTIONTESTSS to ExitEEPROM FORMAT

9、TESTLoad default data. Display shows “NEW“.Caution!All presets from the customer will be lost!Disconnectmains cordLEAVE SERVICETEST PROGRAMVOLUMEKnobROTARYENCODER TESTDisplay shows value for 2 seconds.Values increases or decreases in steps of 1 until 0 (VOL MIN) or 40 (VOL MAX) is reached.YNYNNBIIBu

10、tton pressed?BIIButton pressed?DISPLAYTESTDisplay shows Figure 1 Display shows Figure 2Y9Button pressed?Figure 1Figure 2To start service test programhold S button depressedwhile set is in standbyand pressthe STANDBY button*Display shows theROM version “SVxx-yy“S refers to Service ModeV refers to Ver

11、sionxx refers to Software version number of the back uProcessor(counting up from 01 to 99)yy refers to the front uProcessor version number(00 will be displayed if there is no front uProcessor use)SERVICE TEST PROGRAMSD6.1 Service Test Program dd wk0405MAIN MENU* Mains power to set must be onHold S b

12、utton depressed till the Display shown “SVxx-yy“3-2Procedure to change Tuner Grid (not for all versions)1) Power up the set and select TUNER source.2) Hold “PLAY“ button depressed while set is in standbyand press the “STANDBY“ button.3) Hold “PLAY“ button depressed till the display shownPHILIPS-FM f

13、ollowed by display the new tuning gridGRID 9 or GRID 10.Note: Repeating the same action will toggle back to itsprevious tuning grid setting.Reprogramming of DVD version MatrixAfter repair, the customer setting and region code may belost. Reprogramming will put the set back in the state inwhich it ha

14、s left the factory, ie. with the default setting andthe allowed region code.To reprogram do as follows:1) Power up the set and select DISC source.2) Open tray by press “OPEN/CLOSE“ button on the setor press and hold “STOP“ button on the RC.3) Press the following buttons on the Remote Control:. for L

15、X3900SA/01. for LX3900SA/05. for LX3900SA/69. for LX3900SA/75.for LX3950W/01.for LX3950W/054) The display shows YYYY-ZZ and the tray will close.YYYY = model number (eg. 3900, 3950, etc.)ZZ = stroke version (eg. 01, 05, etc.)Procedure for check Software version1) Power up the set and select DISC sour

16、ce.2) Open tray by press “OPEN/CLOSE“ button on the setor press and hold “STOP“ button on the RC.3) Press “OSD“ button on the Remote control.4) The TV screen will shows:SD6.1 Vxx YYYY-ZZ P QQSERVO: GGGGGGGG REG:Dxx = version numberYYYY = model number (eg. 3900, 3950, etc.)ZZ = stroke version (eg. 01

17、, 05, etc.)P / D = region codeQQ = version number of front uProcessorGGGGGGGG = version for servo codeProcedure to upgrade software1) Power up the set and select DISC source.2) Open tray by press “OPEN/CLOSE“ button on the setor press and hold “STOP“ button on the RC.3) Place upgrade CD-ROM onto tra

18、y and close.4) The set will response and display the following:- LOAD After the disc is read, the tray will open foryou to remove the disc- ERASE- WRITE- ERROR if upgrade is unsuccessful- UPG END - PHILIPS if upgrade is successful- DISC-CLOSE-LOAD Tray will close indicatingthat the upgrade process i

19、s completed5) The whole process should not take more than 5minutes.Caution: Do not unplug the set until upgrade is completed.Trade ModeTrade mode is a feature that will block all set keys whenenabled. It is for dealers to prevent customers fromremoving disc, changing source etc using the set keys.Ro

20、tary and Remote Control (RC) keys are still allowed inTrade mode.To activate Trade Mode:1) Power up the set and select DISC source.2) Open tray by press “OPEN/CLOSE“ button on the setor press and hold “STOP“ button on the RC.3) Then press buttons on the RC.4) The display shows TRA ON and the tray will close.Trade Mode is now enabled.To deactivate Trade Mode:1) Power up the set and select DISC source.2) Open tray by press and hold “STOP“button on the RC.3) Then press buttons on the RC.4) The display shows TRA OFF and the tray will close.Trade Mode is now disabled.