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

GBCLASS 1LASER PRODUCTCOMPACTDIGITAL AUDIOService ManualServiceServiceServiceMZ-1000/22 für 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 specificati.“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.Avoid direct exposure to beam.S Varning !Osynlig laserstrålning när apparaten är öppnad och spärrenär urkopplad. Betrakta ej strålen.SF Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinanäkymättömälle laserisäteilylle. Älä katso säteeseen!DK Advarse !Usynlig laserstråling ved åbning når sikkerhedsafbrydere erude af funktion. Undgå udsaettelse for stråling.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 Cover 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 INSTRUCTIONS (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 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 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 (POWER 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 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)Dismantling 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 capacitors (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) 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 occurs.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 SERVICETEST 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 once 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 out.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 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(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 shows 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 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“87.5MHz108MHz531kHz1602kHz558kHz1494kHz87.5MHz87.5MHz87.5MHz87.5MHz98MHzUSA“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 frequency (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 theROM 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