Philips-MCM-279-Service-Manual(1) 电路图 维修手册.pdf

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1、MCM279 Service AIDS & CD playability .1-1.1-4 Specifications .2 Connection & Controls .3 Disassembly Instructions .4 Block & Wiring diagrams .5 MAIN BOARD .6 KEY & USB JACK BOARD .7 POWER & AMP BOARD .8 EXPLODE DIAGRAM .9 SERVICE PARTLIST .10 FACTORY PARTLIST .11 3141 785 32152 2 RadioFans.CN 收音机爱 好

2、者资料库 1-1 Service Tools: Universal Torx driver holder .4822 395 91019 Torx bit T10 150mm .4822 395 50456 Torx driver set T6-T20 .4822 395 50145 Torx driver T10 extended .4822 395 50423 Compact Disc: SBC426/426A Test disc 5 + 5A .4822 397 30096 SBC442 Audio Burn-in test disc 1kHz .4822 397 30155 SBC42

3、9 Audio Signals disc .4822 397 30184 Dolby Pro-logic Test Disc .4822 395 10216 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connecte

4、d with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential. ESD CLASS 1 LASER PRODUCT GB Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be

5、used Safety components are marked by the symbol !. Lead free RadioFans.CN 收音机爱 好者资料库 Set remains closed! Standard repair procedure N Y Play a CD for at least 10 minutes Y playability ok ? N playability ok ? add Info for customer SET OK playability ok ? Y N check playability N Y playability ok ? chec

6、k playability check playability EYE-Pattern ok ? N Y check EYE-Pattern replace CD Drive Laser current ok ? N Y check Laser current CD Drive offsets ok ? NY check CD Drive offsets clean the lens check playability return set Customer complaint CD related problem return set return set replace CD Drive

7、return set replace CD Drive return set replace Signal Processor return set fast lens cleaning 1 2 3 4 5 6 7 For flap loaders (= access to CD drive possible) cleaning method 4 is recommended 1 - 7 For description - see following pages CD PLAYABILITY CHECK 1-2 RadioFans.CN 收音机爱 好者资料库 1 PLAYABILITY CHE

8、CK For sets which are compatible with CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbance playing time for: Fingerprint 10seconds Black dot from 00:50 to 01:10 jump forward/backward

9、(search) within a reasonable time For all other sets use CD-DA SBC 444A.4822 397 30245 TR 14 (600 Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000 wedge) playback of all these tracks without audible disturbance playing time for: 1000 wedge 10seconds Fingerprint 10seconds Black dot from 01

10、:05 to 01:25 jump forward/backward (search) within a reasonable time 2 CUSTOMER INFORMATION It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or copy-p

11、rotected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in the addendum sheet. The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations. 3 FA

12、ST LENS CLEANING (dry brush) Use lens cleaning CD SBC AC300.9082 100 00043 Insert the lens cleaning CD, press PLAY and follow the voice guides instructions on the CD. 4 LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must

13、 be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent B4-No2”, available with codenumber 4822 389 10026. The actuator is a very precise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (dont press too hard) wit

14、h a soft and clean cotton bud moistened with the special lens cleaner. The direction of cleaning must be in the way as indicated in the picture below. Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratc

15、hes on the lens. CD PLAYABILITY CHECK 1-3 5 EYE-PATTERN SIGNAL JITTER MEASUREMENT Measure the signal on the input of the Signal processor using an analog oscilloscope. Please find the exact measuring point in your Service Manual. See below examples of the signal. Amplitude should read at least 700mV

16、pp using SBC444A. good bad If the oscilloscope shows a signal like the bad one, and/or the amplitude decreases within 1 minute - the CD drive has to be replaced. 6 CD DRIVE LASER CURRENT MEASUREMENT The laser current can be measured as a voltage drop on a resistor. The resistor is marked in every Se

17、rvice Manual. The value depends on the type of CD drive. typical valuemost probably defect VAMxxxx: 150-230mV350mV MCDxx: 170-230mV300mV DA1x: 210-250mV350mV DA2x: 175-200mV250mV Use SBC444A (CD-DA) for measurement. 7 CD DRIVE OFFSET MEASUREMENT The photodiodes of the CD-drive may have an offset. Th

18、ese offsets have to be compensated by the signal processor. High offsets can lead to poor playability of some CDs (skipping tracks). To measure the offset values, start the Service Test Program - section “Focus Test” without a CD. The offsets can be measured with a DC Millivoltmeter directly on the

19、connector (see drawing below). Pin numbering varies from drive to drive. The values from diode A-D should read 010mV. Diodes E and F are less critical. If one of the offsets is higher than 10mV the CD drive has to be replaced. Otherwise replace the Signal Processor. Sanyo DA12T3 CD Drive A A F C B E

20、 C D E VCC B VREF F D 9 10 11 12 13 14 15 16 1800 +5V_HF VrefCD10 A D E B C F GND8 E D A B C F Laser power control 100n 2878 470n 2876 3821 1R 1K 3823 2880 33p +5V BC807-40 7879 3817 47R 3820 4R7 47R 3819 1n 2879 2877 47u 1 8 4 7811-A LM358D 3 2 10K 3822 47R 3818 2841 100n 47n 2869 +5V_HF LASER DIOD

21、E U 250mV -Laser damaged ! 4,6V 3V 3,3V 3,9V 2V 0,17V 0,17V Sanyo DA12T3 HF-Amplifier D3 D2 D1 Drive detection 680R 3905 3903 3K3 BC847B 7877 47n 2818 1K5 3902 5 7 4 2 1 6 3 64 8 9 10 11 470R 3893 +3.3V 2K2 3908 10K 3923 BC847B 7878 BC847B 7876 4n7 2813 3896 100R 220u 2885 2881 560p 47n 2887 560R 39

22、01 2883 470n 2817 4u7 3n3 2814 3898 220R 3895 27K 470n 2884 +3.3V 3909 820R 3907 100R 3920 33K 3897 2882 82p 3K3 3904 2K7 3899 3906 470R +5V_HF HFIN VrefCD10 100p 28152816 22n LDON to 3826,3827 VREF GE VDDA1 VRIN VSSA1 ISLICE LDON D1 D2 D3 D4 HFIN HFREF IREF CD_DA: 0V / CD_RW: 3V (A-D) 800mVpp TB =

23、0.5s/div EYE-PATTERN 1,8V 1,2V 2,4V 2,6V 0,65V CD PLAYABILITY CHECK 1-4 2 - 1 AMPLIFIER Output power .30 W RMS Signal-to-noise ratio. 65 dBA Frequency response . 100 18kHz, 3 dB Input sensitivity AUX . 0.5 V (max. 1 V) Impedance loudspeakers . 6 Impedance headphones .32 -1000 . 15mW CD PLAYER Freque

24、ncy range . 100 18kHz Signal-to-noise ratio.65 dBA TUNER FM wave range .87.5 108 MHz MW wave range.531 1602 kHz Number of presets . 40 Antenna FM.75 wire MW . Loop antenna SPEAKERS Bass reflex system Dimensions (w x h x d) . 158 x 250 x 185 (mm) GENERAL INFORMATION AC Power . 110 240 V, 50 Hz/60Hz D

25、imensions (w x h x d, with/without the stand) . 211 x 250 x 160/211 x 250 x 126 (mm) Weight(with/without speakers) .3.7 / 1.33 kg Standby power consumption .2 W Eco power standby . /=80OHM.PC1.000FAP071249 .100308940-070400100MECHANICAL SECTION OF MCM279/12SET1.000 .200108941-070400100PLASTIC PART O

26、F MCM279/12SET1.000 .100308940-070400100MECHANICAL SECTION OF MCM279/12SET1.000 .200108941-070400100PLASTIC PART OF MCM279/12SET1.000 .300105001-070400100CABINET FRONTPC1.000 .300205506-061100100LENS FRAME COSMETIC TOP_LEFTPC1.000FAP071121 .300305506-061100200LENS FRAME COSMETIC TOP_RIGHTPC1.000FAP0

27、71122 .300405506-061100300LENS FRAME COSMETIC BOTTOM_LEFTPC1.000FAP071120 .300505506-061100400LENS FRAME COSMETIC BOTTOM_RIGHTPC1.000FAP071118 .300605503-070400100LENS-SLIDE DOORPC1.000 .300705002-070400100CABINET REARPC1.000 .300805903-070400100CARRIER - SLIDE DOOR -RPC1.000 .300905903-070400200CAR

28、RIER - SLIDE DOOR -LPC1.000 .301005705-070400100RACK BARPC1.000 .301105502-070400100LENS-CD AMBI LIGHT GUIDEPC2.000 .301205408-061100200BUTTON POWERPC1.000FAP071130 .301305403-061100200BUTTON SET FUNCTION-APC1.000FAP071077 .301405404-061100200BUTTON SET FUNCTION-BPC1.000FAP071081 .301505618-06110030

29、0BRACKET PLAY BUTTONPC1.000FAP071083 .301605417-061100100BUTTON SET NAVIGATIONPC1.000FAP071087 .301705902-061100400COVER POWER BUTTONPC1.000FAP071080 .301805608-061100100BRACKET CDMPC3.000FAP071124 .301905629-061100100BRACKET-FM TUNER MODULEPC1.000 .302205201-070400100DOOR CD - SLIDEPC1.000 .3023052

30、01-070400200DOOR CD - ROTATEDPC1.000 .302405705-070400200GEAR-ROTATED DOOR RACKPC1.000 .302505705-070400300GEAR-SLIDE DOORPC1.000 .302605101-070400100CONTROL PANELPC1.000 .302705904-070400100COVER- ROTATED CD DOORPC1.000 .302806307-070400100BRACKET - GEAR HOLDER APC1.000 .302906307-070400200BRACKET

31、- GEAR HOLDER BPC1.000 .303005618-070400100BRACKET-RACK HOLDER APC1.000 .303105618-070400200BRACKET-RACK HOLDER BPC1.000 .303205913-070400100FRAME-LCD CHROMEPC1.000 .303405902-050700200COVER PLAY BUTTONPC1.000FA060025 .303505403-050700100BUTTON FW/FFPC1.000FA060015 .303605703-050700100GEAR WHEEL APC

32、1.000FA060011 .303705703-050700200GEAR WHEEL BPC1.000FA060007 .303805704-050700100PULLEY SERVO MOTORPC1.000FA060012 .200208942-070400100METAL PART OF MCM279/12SET1.000.200208942-070400100METAL PART OF MCM279/12SET1.000 .300106802-061100100STEEL FOR CABINET REAR.PC1.000 .300206600-070400100HEATSINKPC

33、1.000 .300306406-050700101CUSHION CD MECHANISM APC2.000FA060144 .300406405-050700100CD DAMPER (BLACK) 20DEGREEPC2.000FA060277 .300456405-071100100CD DAMPER (BLACK) 30DEGREEPC1.000 .300506404-061100100RUBBER FOOT FOR FRAME-COSMETICPC2.000FAR071063 .300806818-070400100SHAFT FOR MCM279PC1.000FAP071253

34、11-6 FACTORY PARTLIST LevelItemComponentDescUnitQtyLocationAppFormLevelItemComponentDescUnitQtyLocationAppForm .300906816-070400100MAIN PCB SHIELDING FOR MCM-79PC1.000 .301006402-050700100BELT MOTORPC1.000FA051544 .301106210-070400300PC SHEET_IRPC1.000 .200308946-070400100SCREW PART OF MCM279/12SET1

35、.000.200308946-070400100SCREW PART OF MCM279/12SET1.000 .300106011-230100100SCREW, ST 3.0X10 PBPC11.000 6-CABINET REAR,2-SPEAKER JACK,3- FOR BRACKET CDM FAP061541 .300206023-230100100SCREW, M B B3X10B (TOYO:A023010002)PC3.000HEATSINK FIXINGFA051216 .300306011-226060100SCREW , ST 2.6X6 PB (BLACK)PC9.

36、000 3-BRACKET-RACK HOLDER A&CABINET FRONT,3-BRACKET-GEAR HOLDER A&CABINET FRONT,3-BRACKET-GEAR HOLDER A&BRACKET-GEAR HOLDER B FA040269F AP071085 .300406011-220080300SCREW, ST P B 2X8 S A222008003PC20.000 13-FOR FRAME COSMETIC FIX,5- FOR KEY-PCB FIX,2-FOR CARRIER- SLIDE DOOR-L/R FIX FAP061778 .300506

37、012-226100110SCREW, PTTN M 2.6X10 PB(DIA.:12.0)PC4.000 2-REAR CABINET STEEL,2-POWER PCB&REAR CABINET FA050971 .300606021-226060100SCREW, M2.6X6 PBPC2.000FOR MOTO FIXFAP060818 .300706023-230060100SCREW, M B B3X6BPC1.000FOR RADIO MODULE FIXFA051219 .300806011-217040100SCREW ST P B1.7X4 BPC9.000 4-FOR

38、FRONT CABINET&CONTROL PANEL,5-FOR DOOR-CD-ROTATED &COVER-ROTATED-CD DOOR FAP060819 FAP061877 .300906011-220120200SCREW ST P B2.0X12 NPC1.000FOR BRACKET-RACK-HOLDER-BFIXFA060181 .200408945-070400100MINISTRANT PART OF MCM279/12SET1.000.200408945-070400100MINISTRANT PART OF MCM279/12SET1.000 .300107902

39、-070400100NITTO 500 DOUBLE SIDE TAPE 184x55MMPC1.000FAP071252 .300208036-000000200CABLE TIEPC4.000 .200508943-070400100PACKING PART OF MCM279/12SET1.000.200508943-070400100PACKING PART OF MCM279/12SET1.000 .300107103-030300100LABEL DONT TOUCH THE LENSPC1.000 FA040034, FAP070872 .300207107-030600100L

40、ABEL (QC)PC1.000FA040038 .300307111-070400100LABEL TYPE PLATE 37X60MM (MCM279/12).PC1.000 .300407111-070400200LABEL CARTON BOX 83x103MM (MCM279/12).PC1.000 .300507112-050700100LABEL UWAGA! .PC1.000FA060197 .300607112-050700200LABEL VIGYAZAT! .PC1.000FA060195 .300707112-050700300LABEL CHRANTE SE .PC1

41、.000FA060193 .300807202-070400100INSTRUCTION BOOK-11 LANGUAGE (MCM279/12).PC1.000 .300907202-070400200INSTRUCTION BOOK-5 LANGUAGE (MCM279/12).PC1.000 .301007203-070400100QUICK START GUIDE ENG+FRE LANGUAGE.PC1.000 .301107203-070400200QUICK START GUIDE SPA+GER LANGUAGES.PC1.000 .301207203-070400300QUI

42、CK START GUIDE DUT+ITA LANGUAGES.PC1.000 .301307201-041900200GUARANTEE LEAFLET 10/07/2006 (9965 000 38986)PC1.000FAP061187 .301407603-070400100DISPLAY BOX W=A.PC1.000 .301507401-070400200POLYFOAM TOP (MCM279).PC1.000 .301607402-070400100POLYFOAM BOTTOM (MCM279)PC1.000 .301907903-061100100EPE BAG L37

43、0 xW330MM W/PE-LD04 MARKPC1.000 .302007502-050700100POLYBAG FOR I/B 203x305x0.04MM W/PE-LD04.PC3.0001-IFU,1-ACCESSORIESFA051563 .302107502-042200100POLYBAG 9 x 14 W/WARNING & RECYCLE MARKPC1.0001-QSGFA050411 .302207905-030600200POLYBAG FOR AM RING 155X203MMPC2.0001-AM AND FM ANTENNA,1-STANDFA030070 .302307905-061100100POLYBAG 110 x130 x0.04MM W/PE-LD04PC1.0001-STAND .302407907-042500100ACETATE CLOTH ADHESIVE TAPE L95xW9MMPC1.000STICK ON CD DOOR .302507206-030800100SLIP SHEET 1400X1250MMPC0.044FA051273 .302607206-042500100FITTING PALLET 46.125X38.75 (3140 10638732)PC0.04