Philips-MZ-1200-Service-Manual电路原理图.pdf

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1、GBCLASS 1LASER PRODUCTCOMPACTDIGITAL AUDIOService ManualServiceServiceServiceMZ-1000/22 fr Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali e che siano utilizzati i pezzi di ricambioidentici a quelli specificat

2、i.“After servicing and before returning set to customer perform aleakage current measurement test from all exposed metal parts toearth ground to assure no shock hazard exist. The leakage currentmust not exceed 0.5mA.“CLASS 1LASER PRODUCT3122 110 03420GB Warning !Invisible laser radiation when open.A

3、void direct exposure to beam.S Varning !Osynlig laserstrlning nr apparaten r ppnad och sprrenr urkopplad. Betrakta ej strlen.SF Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinankymttmlle laseristeilylle. l katso steeseen!DK Advarse !Usynlig laserstrling ved bning nr sikker

4、hedsafbrydere erude af funktion. Undg udsaettelse for strling.1-6DISMANTLING INSTRUCTIONS (CENTRE UNIT)Dismantling of the Cladding1) Remove 8 Plug Rubbers (pos 123, 124, 125) from bothside of the Centre Unit (for MZ-1100 only) with a flat headscrew driver (see Figure 1).Figure 1Dismantling of the Co

5、ver Orn Rear and Cladding Internal1) Remove 5 screws D and 2 screws E (see Figure 5) toloosen the Cover Orn Rear (pos 119).2) Remove 4 screws F (see Figure 6) to loosen the CladdingInternal Left (pos 117) and Cladding Internal Right (pos118).2-1 2-1Dismantling of the Control BoardDISMANTLING INSTRUC

6、TIONS (CENTRE UNIT)Dismantling of the Front Cover Assembly1) Remove 2 screws B (see Figure 3 and Figure 6) anduncatch C1 (see Figure 3) with a small size screw driver bygivivg a push in the direction as shown in Figure 4 toseparate the Front Cover Assembly from the Centre Unit(see Service Position A

7、 for Centre Unit).1) Remove 7 screws G (see Figure 7) to loosen the ControlBoard (pos 1003-A).2) Remove 2 screws H (see Figure 7) to loosen the IR EyeBoard (pos 1003-B).Figure 2Figure 3 Figure 4Figure 5Figure 6Figure 72) Remove 8 screws A (see Figure 2) from both side of theCentre Unit to loosen the

8、 Cladding (pos 120).2-2 2-21) Remove 4 screws J (see Figure 8) from both side of thePower Box to loosen the Cabinet Top Power Box (pos229) and Cabinet Bottom Power Box (pos 230).Service position AService position CService position BDISMANTLING INSTRUCTIONS (CENTRE UNIT) DISMANTLING INSTRUCTIONS (POW

9、ER BOX)Dismantling of the Power Box CabinetFigure 8Figure 9Figure 102) Uncatch C2 (see Figure 9) to separate the Cabinet FrontPower Box (pos 227) and Cabinet Rear Power Box (pos228) from the chassis.3) Remove 8 screws K (see Figure 10) to loosen theChassis Top of the Power Box (see Service position

10、A forPower Box).2-3 2-3Service position AService position CRepair Hints1) Remove 3 screws L (see Figure 11 and Figure 12) toloosen the Amplifier Board (pos 1102).2) Remove 2 screws M (see Figure 12) to loosen theInterconnect Board (pos 1103).Service position BDISMANTLING INSTRUCTIONS (POWER BOX)Dism

11、antling of the Amplifier Board and Supply Board and Interconnect Board3) Remove 3 screws N (see Figure 11 and Figure 12) toloosen the Supply Board (pos 1101).DISMANTLING INSTRUCTIONS (POWER BOX)Figure 11Figure 121) WARNINGSwitching Mode Power Supply (SMPS) Board consists of high voltage filter capac

12、itors (2203 or 2210).Safety measures must be taken by the repair technician during servicing:- When the supply is on, avoid touching the SMPS Board and the high voltage filter capacitors (2203 or 2210).- When the supply is off, make sure to discharge the high voltage filter capacitors (2203 or 2210)

13、 with a suitable value resistorbefore any servicing to prevent electric shock.2) The flex cables are very fragile, care should be taken not to damage them during repair. After repair, be very sure that theflex cables are inserted properly into the flex sockets before encasing, otherwise faults may o

14、ccurs.Use a insulation sheet toprevent any damaged orshort-circuit of the boards.Capacitors2203 or 2210Variousother TestsActivated with ACTIONTESTSEEPROM FORMATTESTLoad default data. Display shows “NEW“ for 1 second.Caution!All presets from the customer will be lost!Disconnectmains cordLEAVE SERVICE

15、TEST PROGRAMT9 to ExitEEPROM TEST A test pattern will be sent to the EEPROM.“PASS“ is displayed if the uProcessor read back the test pattern correctly, otherwise “FAIL“ will be displayed.MUTEDEMO TOGGLEPressing this button will toggle between “DEMO ON“ and “DEMO OFF“. The DEMO status will scroll onc

16、e across the Display.MP3-CDButton pressed?YNMP3 MODULETESTSTEP123456DISPLAYMESSAGE-BUS OK-FOC OK-BUS ER-FOC ERACTIONIndicates the module used.Version of the MPEG software (nn = Version Number).Communication test between the Main uP and CD ModuleCD SLEDGE MOTOR is moved in.CD SLEDGE MOTOR is moved ou

17、t.FOCUS SERVO Test.Press 9 to exitOKAY ERRORMP3CDTI-VnnTI BUSSLD ISLD OTI FOCChoose levelby pressingSTNote : Disc should be available on the tray before entering the Service Test Mode.Figure 1 Figure 2 Figure 3YNYNNDIMButton pressed?DIMButton pressed?DIMButton pressed?DISPLAYTESTDisplay shows Figure

18、 1 and switch all LEDs on (see Table 2 - Pattern 1)Display shows Figure 2and switch alternate LEDs on(see Table 2 - Pattern 2)LEDsSOURCESTANDBY / ECO POWERLCD BACKLIGHTPattern 1ONGREEN & REDONPattern 2ONGREENDIMPattern 3OFFOFFONTable 2YYN9Button pressed?Display shows Figure 3and switch all LEDs off(

19、see Table 2 - Pattern 3)YNYNNAUXButton pressed?AUXButton pressed?AUXButton pressed?ADCTESTDisplay shows “ADC Value“for ADC 1(Input Line - Option)Display shows “ADC Value“for ADC 2(Input Line - Key1)YYN9Button pressed?ADC Test is used for checking the ADC inputs to the microprocessor.The display show

20、s an ADC value between 0 and 255 for an input signal between 0 and 5V.Display shows “ADC Value“for ADC 3(Input Line - Key0)CLK/TIMERButton pressed?YYYNNNCLK/TIMERButton pressed?9Button pressed?Display shows32KOutput on Quartz-Test-Pinpin 19 of uP = 2048HzDisplay shows12MOutput on Quartz-Test-Pinpin

21、19 of uP = 2,929.6875HzQUARTZTESTTUNERButton pressed?DisconnectMains cord ?YYNNYDisplay Tuner Version “ccc“Service frequencies arecopied to the RAM (see Table 1)Tuner works normally except:PROGRAM buttonService Mode leftTUNERTESTTUNERButton pressed?NPRESET1234567891011Europe“EUR“87.5MHz108MHz531kHz1

22、602kHz558kHz1494kHz87.5MHz87.5MHz87.5MHz87.5MHz98MHzUSA“USA“87.5MHz108MHz530kHz1700kHz560kHz1500kHz98MHz87.5MHz87.5MHz87.5MHz87.5MHzOversea“OSE“87.5MHz108MHz531/530kHz*1602/1700kHz*558/560kHz*1494/1500kHz*87.5/98MHz*87.5MHz87.5MHz87.5MHz98/87.5MHz*Table 1Note: * Depending on the selected grid freque

23、ncy (9 or 10kHz).By holding the *SOURCE and *PLAY buttons depressed while switching on the Mains supply, the tuning grid frequency is toggled between 9kHz and 10kHz for the Oversea (/21) version.To start service test programhold * T & *SOURCEdepressed whileplugging in the mains cordDisplay shows the

24、ROM version “S-Vyy“(Main menu)S refers to Service ModeV refers to Versionyy refers to Software version number of the uProcessor(counting up from 01 to 99)The Remote Control must already be set to “AUX“ mode before pressing any of the specified Remote Control keys in the Service Test Mode.All test buttons mentioned in the Service Test Program are activated from the Remote Control unless otherwise specified.* test buttons are activated from the Set.SERVICE TEST PROGRAMLifeStyle Micro2002 (MZ-1x00) Service Test Program (dd wk0227)3-1 3-1