Philips-FWC-255-Service-Manual电路原理图.pdf

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1、CLASS 1LASER PRODUCTCOMPACTDIGITAL AUDIOService ManualServiceServiceServiceFW-C255/21/30/37TABLE OF CONTENTSPageLocation of pc boards fr Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali e che siano utilizzati i

2、 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

3、Warning !Invisible laser radiation when open.Avoid 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 Adv

4、arse !Usynlig laserstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg udsaettelse for strling.2-1 2-1DISMANTLING INSTRUCTIONS1) Loosen the 4 screws, slide Cover top (pos 253) towardsthe rear and remove it upwards.2) Loosen 3 screws slide the Panel right (pos 252) towardsthe rear and re

5、move it outwards. Do likewise for the Panelleft (pos 251).3) Push the gear slowly towards the front as shown in figure2 until the CDC tray starts to move out of the Front Cabinet(pos 101). The CDC tray is now disengage and can bepulled out completely.Dismantling the 3CDC Module4) Remove the Cover Tr

6、ay (pos 105) as shown in figure 2.5) Loosen 4 screws A to remove the CDC Module (pos 1104)as shown in figure 2.AAATurn the Gear towards the Fronttill the CDC Tray starts to openFigure 2Figure 1Dismantling of the Volume & Jog Rotary knobs1) Cut a piece of packaging tape approximately 5cm width by12cm

7、 length and tape its narrow side on to the top andbottom side of the Volume knob (pos 132) as shown infigure 3.Dismantling of the Front Panel assembly1) Loosen 2 screws below the Front Panel (pos 101) mountingit to the Bottom plate (pos 227).2) Release the 2 catches on the sides of the Front Panel t

8、oseparate it from the Bottom plate.3) Remove the Volume and Jog Rotary knob if the Frontboard needs to be dismantled. For Karaoke versions, theKaraoke knob (pos 133) also need to be removed.4) Loosen 8 screws B to remove the Front board as shown inFigure 5.5) Loosen 6 screws C and eject both cassett

9、e doors toremove the Tape mechanism (pos 1103) as shown in figure6.Note: The Cassette door can be removed only afterthe removal of the Tape mechanism and buttons.2) Place a small screw driver in between the tape & knob (seefigure 3) to give more leverage in pulling out the knob asshown in figure 4.3

10、) Do likewise for the Jog Rotary knob (pos 131). You mayhave to rotate the knob to provide the most exposed areaduring application of the packaging tape.Figure 4Figure 3Figure 6Figure 52-2 2-2Service pos AService pos BNote: After re-assembly, it is very important to ensure allwires are routed proper

11、ly to ensure that they do nottouch/obstruct all moving parts.The 3CDC Module can be complete detached whilerepair the other portion of the set.Dismantling of the Bottom & Rear Panel assembly1) Loosen 5 screws D mounting the Combi board to the RearPanel (pos 254) as shown in figure 9.2) Loosen 3 scre

12、ws E and release the 2 catches on the sidesof the Rear Panel to separate it from the Bottom plate (pos227).3) Loosen 4 screws G to remove the Mains Transformer.5) Loosen 2 screws F to remove the Combi Board.Dismantling of the Cassette door Lenses1) Loosen the Lens Cassette Strip Left Top (pos 163) b

13、ypushing it towards the inside as indicated in Figure 7 andremove it by using a minus screw driver force it out asindicated in Figure 8.2) Remove the Lens Cassette Left (pos 161) by pushing ittowards the inside as indicated in Figure 7. Be careful notto damage or break the catch A.3) Do likewise for

14、 the right Cassette Door Lens (pos 160 and162).Use a minus screwdriver to push the Lensin the direction shownCatch APush in thisdirectionPush in thisdirectionFigure 7Figure 8Figure 10Figure 93-1 3-1Variousother TestsActivated with ACTIONTESTQEEPROM FORMAT Load default data. Display shows “NEW“ for 1

15、 second.Caution!All presets from the customer will be lost!Disconnectmains cordLEAVE SERVICETESTPROGRAMR 9 to ExitEEPROM TEST A test pattern will be sent to the EEPROM.“PASS“ is displayed if the uProcessor readback the test pattern correctly, otherwise“FAIL“ will be displayed.Volume KnoborJog Shuttl

16、e knobROTARYENCODER TESTDisplay shows value for 2 seconds.Values increases or decreases in steps of 1until 0 (Min.) or 40 (Max.) is reached.DBBDEMO DEMO will toggle on or off.The message: “DEMO ON“ or “DEMO OFF“will scroll across the display to show thenew status of the set.STANDBY-ONButton pressed?

17、YNSet is in Service PLAY Mode.The Service Play Mode is intended todetect and identify the failures in the CD Mode.In this mode the electronics will still functioneven when an error is detected so thatrepair activities can be carried out.SERVICEPLAY MODEIn case of failures, errorcodes according to ta

18、ble 2 will be displayed.OButton pressed?YYYNNNOButton pressed?9Button pressed?Display shows8MOutput at (Front Board) pin 80 of uP = 1,953.125HzDisplay shows32KOutput at (Front Board) pin 80 of uP = 2048HzQUARTZTESTNote: During the 3CDC tray may “jerks“ open& close or the carousel may rotatesslightly

19、. This is due to sharing of controllines during the Service test program.TUNERButton pressed?DisconnectMains cord ?YNNYService frequencies arecopied to the RAM (see Table1)Tuner works normallyexcept:PROGRAM buttonService Mode leftTUNERTESTDisplay Tuner Version“ccc“TUNERButton pressed?NYPRESET1234567

20、891011Europe“EUR“87.5MHz108MHz531kHz1602kHz558kHz1494kHz87.5MHz87.5MHz87.5MHz87.5MHz98MHzEast Eur.“EAS“87.5MHz108MHz531kHz1602kHz558kHz1494kHz87.5MHz87.5MHz87.5MHz87.5MHz98MHzUSA“USA“87.5MHz108MHz530kHz1700kHz560kHz1500kHz98MHz87.5MHz87.5MHz87.5MHz87.5MHzOversea“OSE“87.5MHz108MHz530/531kHz*1700/1602

21、kHz*560/558kHz*1500/1494kHz*98/87.5MHz*87.5MHz87.5MHz87.5MHz87.5/98MHz*Table 1East Eur. Extended-band“EAS“65.81MHz108MHz74MHz87.5MHz531kHz1602kHz558kHz1494kHz98MHz70.01MHz65.81MHzNote: * Depending on the selected grid frequency (9 or 10kHz)By holding the TUNER and R buttons depressed while switching

22、 on the Mains supply, oneof the undermentioned features will be activated:- the tuning grid frequency is toggled between 9kHz and 10kHz for the Oversea (/21) version.- the extended FM1 (65.81MHz - 74MHz) is toggled on and off for East Eur. (/34) version.YNYNYNDIMButton pressed?DIMButton pressed?9But

23、ton pressed?DISPLAYTESTDisplay shows Fig. 2and selected LEDs on(see note 2)Display shows Fig. 1and selected LEDs on(see note 1)Figure 1Figure 2note 2 : OPTIMAL is on while JAZZ & TECHNO are off, other LEDs statusare not important (applicable only for sets with LEDs)note 1 : JAZZ & TECHNO are on whil

24、e OPTIMAL is off, other LEDs statusare not important (applicable only for sets with LEDs)Table 2Error codeE1000E1001E1002E1003E1005E1006E1007E1008E1020E1070E1071E1079Error DescriptionFocus ErrorTriggered when the focus could not be found within a certain time when starting up the CDor when the focus

25、 is lost for a certain time during play.Radial ErrorTriggered when the radial servo is off-track for a certain time during play.Sledge In ErrorThe sledge did not reach its inner position (inner-switch is still close) before approximately6 Sec. have passed by. Inner-switch or sledge motor problem.Sle

26、dge Out ErrorThe sledge did not come out of its inner position (inner-switch is still open) before approximately250 mSec. have passed by. Inner-switch or sledge motor problem.Jump-offtrack errorTriggered in normal play when the jump destination could not be found within a certain time.When this erro

27、r occurred, software will try to recover by initiating the jump command again.If it is recoverable, the disc will continue to play.Subcode ErrorTriggered when a new subcode was missing for a certain time during play.PLL ErrorThe Phase Lock Loop could not lock within a certain time.Turntable Motor Er

28、rorGenerated when the CD could not reached 75% of speed during startup within a certain time.Discmotor problem.Focus Search ErrorThe focus point has not been found within a certain time.This happens when the carousel switch is defective and closed all the time, or when thecarousel is blocked when it

29、 is located exactly at a disc position.This happens when the carousel switch is defective and does not closed electrically, or whenthe carousel is blocked in between two disc positions. The time-out is approximately 5 Sec.The drawer could not open or enter the inside position and is opening again. T

30、his happen whenthe drawer is blocked and cannot go fully inside or when the drawer switch is defective and doesnot close.To start service test programhold P & TAPEdepressed whileplugging in the mains cordDisplay shows theROM version *“S-Vyy“(Main menu)S refers to Service Mode.V refers to Version.yy

31、refers to Software version number of Processor.(Counting up from 01 to 99)SERVICE TEST PROGRAMMini 2002 FW-C1xx, C2xx, C3xx Dated: wk1414-1 4-1SET BLOCK DIAGRAMFW-C255 Block diagram .34280 dd wk148VOL. 1D+12V_A+12V_A+12V_AAMP_ONAMUTEPOWER SUPPLYRin = 3k+F250mVECO/SLEEPA# FEATURE PROVISIONFUSEREGULAT

32、ORL7805+CDCD_ONVDC-3CAM# FOR VCD/MP3 VERSIONL/R SPEAKERTUNERSURROUNDMAINS76dBA16dBI2C CLK33RCONTROL(ETF7 ONLY)KEY SCAN+5V6-CMOS (-9V)MIC DETI2C CLK+12V_A+9.1VREGULATOR7812I2C250nWb/m+5V6_ECOMAIN SIGNAL PATHMEASUREMENTS ARE IN AUX MODE :LEVELS AT MAX VOLS/N AT 500mWHEADROOM (1% THD) WRT TO LEVEL AT M

33、AX VOLNOTE :FOR CLASS G SWITCHAMPLIFIER+ZREGBASS10MVOL. 2I2C DATAFTDSURROUNDTDA7468MUTEDCOMBI+50VTUNER25mVMUTE+12V_AASOFTWARE CONTROL-33V0.9W/6 ohms+C3.0dB14 dBD+12V_M +12V_A500mV / 1000mV+5V6VOLTAGELPSNTCF1F2LPC+F500mV&HP DET+5V6F2-26 dBCD_ONPWDN# FOR VCD/MP3 VERSION(FOR CDC-L2C ONLY)(+5V)47RAN1783

34、0APOWERFOR MATRIXSA INSELECTOR+CSTBY TRANSFORMERMATRIX2 X 37W 85dBA3dBHEADPHONEFOR -/21 ONLYDAMHEADPHONECHOKE+ZNCDCCONTROLAATTN.SIMPLE500mV+-+JOG-CMOSFUSEFUSEFUSEFUSEMPEG3D-6dB Track+LPSVIDEO OUTA1.0 Vpp# VCD # VCD# VCD# VCD# PROVISION FOR VCD/MP3 VERSION78dBA3.2dB-33VCONTROL650mVCD SUPPLYCONTROLLPC

35、+CDDECODER(ONLY FOR -/37)AM (80% MOD)LED+ZTAPE3CDC-L2CCDCCONTROL+CD250mV-6dB Track+12V_MDMCD_ONAMP_ONASA BUFFERA+12M+12A3.5mVXX mVYY dBAZZ dB2 X 6 OHMS500mVNJM4556AMECO-MTFTAPE-ATTEN.AMP_ONHP_MUTE1.90V67dBA1K500mVHP_OUTF1xTREBLEHP DETCONTROLINTERFACE+12V_MuPD4 X DSC LEDS+5V6SIMPLE KARAOKE+5V6_ECONTC

36、+FFM (67.5 kHz)INCREDIBLEEEPROMF1xTMP87CS71FDRDSSMPS+5V6_ECOF2x(NOT USED FOR -/37)(+5V)+FVOLUMECONTROLECO6AMPLIFIER2.50V+9.1VCDCCONTROL+CD+LPSLF1LEFT/RIGHTLEFT/RIGHT-CMOSPOWER+CSWITCHMIC DETIS FILTER+LPS125mVPOWERSWITCHECO POWERCONTROLI2C DATACONTROLCONTROL100mV76dBA16dB-8.5dB120mV(NOT USED IN -/21 & -/37)+CREGF2x1KHP_OUTFRONTPWDN#SOURCE SELECTORATTN.+9V-33VIR EYE+5V6-33VAUX / CDR+12V_ATRAFO