Philips-MCI-250-Service-Manual电路原理图.pdf

GBCLASS 1LASER PRODUCTCOMPACTDIGITAL AUDIOService ManualServiceServiceServiceMC-i250/21M/22/37TABLE OF CONTENTSPageLocation of pc boards 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.1-62-1Figure 1DISMANTLING INSTRUCTIONS1) Loosen 6 screws and remove the Cover Top (pos 255) bysliding it out towards the rear before lifting up.- 4 screws on the rear- 1 screw each on the left & right side2) Loosen 2 screws each to remove the Panel Left (pos 253)and Panel Right (pos 254). The Panels are remove bysliding it towards the rear and outwards.- 1 screw on the side- 1 screw on the rear3) Take a paper clip or any stiff wire diameter of 1mm-1.5mmand make a marking about 40mm from the tip as shown inFigure 1.4) Place the set in the position as shown in Figure 2 and insertthe paper clip or stiff wire into the hole on the Left side ofthe Cabinet Front (pos 101).5) With the marking just outside the hole on the Cabinet Front(pos 101) as shown in Figure 3, you have to feel and givea push to unlock the tray of the Universal Loader beforesliding it out.6) With the tray of the Universal Loader opened, remove theCover Tray (pos 158) as shown in Figure 4.Opening of the Universal Loader Tray manually & Dismantling of the Cover TrayFigure 2Figure 3 Figure 42-21) Remove 2 screws A (pos 226) as shown in Figure 5 fromthe bottom of the Cabinet Front (pos 101).2) Release the fixation of the Combi Board (pos 1101-1001)to Bracket Combi (pos 252) by releasing the 2 catches C2(see Figure 6) and pulling the board outwards as shown inFigure 7.3) Uncatch 2 catches C1 (see Figure 6) on the left & rightsides of the Cabinet Front (pos 101) and slides the FrontPanel assembly out towards the front.4) Remove 2 screws B (pos 225) as shown in Figure 8 toremove the Universal Loader (pos 1109).Detaching the Front Panel assembly from the Bottom/Rear assemblyFigure 8Figure 5Figure 7Figure 6DISMANTLING INSTRUCTIONS2-3 2-3Dismantling of the Front Panel assembly1) Loosen 3 screws D (see Figure 9) to remove the ControlBoard (pos 1107-B).2) Loosen 2 screws E (see Figure 9) to remove the ECOStandby Board (pos 1107-D).3) Loosen 4 screws F (see Figure 9) to remove the VolumeBoard (pos 1107-H).4) Loosen 2 screws G (see Figure 9) to remove the BracketCombi (pos 252).5) Loosen 2 screws H (see Figure 10) to remove theHeadphone Board (pos 1107-F).6) Loosen 6 screws J (see Figure 11) to remove the DisplayBoard (pos 1107-A).7) Loosen 4 screws K (see Figure 12) to remove the ShuttleBoard (pos 1107-G).8) Loosen 2 screws L (see Figure 12) to remove the LCDInterconnect Board (pos 1107-J).Dismantling of the Antenna Board, Bracket Antenna and Internet Audio Module3) Loosen 2 screws N (see Figure 14A) to remove theInternet Audio Module assembly.4) Loosen 4 screws P (see Figure 14B) to open the ShieldIAM (pos 262).5) Loosen 2 screws P1 (see Figure 14C) to remove the Fan(pos 1111).Figure 9Figure 10Figure 11Figure 12Figure 139) Loosen 1 screws V (see Figure 12) to remove the InfraReceiver Board (pos 1107-E).10)Loosen 2 screws M (see Figure 13) to remove the LCDBack Light Board (pos 1107-C).Figure 14ADISMANTLING INSTRUCTIONSFigure 14CFigure 14B1) Uncatch the catches C5 (see Figure 14) to remove theAntenna Board (pos 1106).2) Uncatch the catches C6 (see Figure 14) and pushupward to remove the Bracket Antenna (pos 250).Figure 142-4 2-4Repair Hints1) During repair it is possible to disconnect the ECO6 TunerBoard completely unless the fault is suspected to be inthat area. This will not affect the performance of the restof the set.2) Care should be taken not to damage or tear the LCDModule Cable during repair (see Figure 18 & Figure 19).The LCD Module Cable may be damage or tear as shownin Figure 20 if too much force is applied when removingthe Black Tape during repair.Note: The flex cables are very fragile, care should be takennot to damage them during repair. After repair, bevery sure that the flex cables are inserted properlyinto the flex sockets before encasing, otherwise faultsmay occurs.Dismantling of the Bottom assembly1) Loosen 2 screws T as shown in Figure 16 to remove theCombi & Regulator boards assembly (pos 1101-1001 &pos 1101-1003).2) Loosen 2 screws U as shown in Figure 17 to remove theHousing Fan Top (pos 267).Note : During Fan (pos 1110) replacement, care shouldbe taken to ensure that the following are correct:- fan blade direction- fan wire positionDismantling of the Rear Panel1) Loosen 3 screws Q and 2 catches C3 (see Figure 15) toremove the Tuner Board assembly.2) Loosen 1 screw S (see Figure 15) to free the MainsSocket Board from the Panel Rear (pos 256).3) Loosen 5 screws R and 2 catches C4 (see Figure 15) toremove the Panel Rear (pos 256) by sliding it out towardsthe rear.Figure 15Figure 16Figure 17Figure 18 Figure 19 Figure 20DISMANTLING INSTRUCTIONS