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

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1、 MCB279/05 Copyright 2008 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior pe

2、rmission of Philips. Published by SL 0821 Service Audio Printed in The Netherlands Subject to modification DAB Micro System Version 1.0 CLASS 1 LASER PRODUCT 3141 785 32860 TABLE OF CONTENTS Page PCBs Location & Version Variations .1-2 Specifi cations .1-3 Measurement Setup .1-4 Service Aids, Safety

3、 Instruction, etc .1-5 to 1-7 Software Version Checking .2 Set Block Diagram .3 Set Wiring Diagram .4 Main Board .5 MCU Board .6 Key Board .7 Power AMP Board .8 CD Board .9 Headphone & Motor & Door Switch Board .10 Set Mechanical Exploded View & Parts List . 11 RadioFans.CN 收音机爱 好者资料库 /12 /58 n iRDC

4、/n ixuA Line Out Video Out Subwoofer Out Digital Out Karaoke Features Voltage Selector ECO Power Standby (LCD Display Off) USB Direct Type /Versions: MCB279 Features in used: /05 VERSION VARIATIONS Type /Versions: Board in used: MCB279 Service policy MAIN BOARD CD BOARD POWER AMP BOARD HEADPHONE BOA

5、RD * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used C /12 /058559/16/85/ Feature diffrence KEY BOARD C C C DAB MODULEM x x x 1 - 2 PCBS LOCATION MOTOR BOARDC C MCU BOARDC x CD BOARD HEADPHONE BOARD KEY BOARD MOTOR BOARD POWER AMP BOARD MCU BOARD MAIN BOARD RadioFans.CN 收音机爱 好者资料库

6、1 - 3 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 ? .15 mW CD PLAYER Frequency range .100 18 kHz Signal-to-noise ratio.65 dBA TUNER FM wav

7、e range .87.5 108 MHz MW wave range.531 1602 kHz Number of presets . 40 Antenna FM.75 ? wire 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/60 Hz Dimensions (w x h x d, with/without the stand) . 211 x 250 x 160/211 x 250 x 126

8、 (mm) Weight(with/without speakers) .3.7 / 1.33 kg Standby power consumption .2 W Eco power standby . 1 W Specifications and external appearance are subject to change without notice. USB .V2.0/ V1.1 . support MP3 and WMA files Number of albums/ folders.maximum 999 Number of tracks/titles.maximum 999

9、 USB PLAYER SPECIFICATIONS RadioFans.CN 收音机爱 好者资料库 1 - 4 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. P

10、M2534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz

11、, 100Hz). RF Generator e.g. PM5326 Ri=50 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50

12、 Tuner FM MEASUREMENT SETUP 1 - 5 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 connected with the same potential as the mass of the

13、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 used Safety components are marked by the symb

14、ol !. Lead free Set remains closed! N Y Play a CD for at least 10 minutes Y playability ok ? N playability ok ? add Info for customer SET OK check playability N Y playability ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning 1 2 3 For flap l

15、oaders (= access to CD drive possible) cleaning method 4 is recommended INSTRUCTIONS ON CD PLAYABILITY 1 - 6 Exchange CDM 1- 4 For description - see following pages 1 PLAYABILITY CHECK For sets which are compatible with CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8

16、(600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbance playing time for: Fingerprint10seconds Black dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable time For all other sets use CD-DA SBC 444A.4822 397 30245 TR 14 (600 Black dot) maximum at

17、 01:15 TR 19 (Fingerprint) TR 10 (1000 wedge) playback of all these tracks without audible disturbance playing time for: 1000 wedge10seconds Fingerprint10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time 2 CUSTOMER INFORMATION It is proposed to add an adde

18、ndum 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-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (meth

19、od 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. 4 LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, clean

20、ing must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent 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) with a soft and clean cotton bud moistened wit

21、h 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 scratches on the lens. INSTRUCTIONS ON CD PLAYABI

22、LITY 1 - 7 1) MCU version : at standby mode, press and hold SOURCE & PLAY buttons at the same time. e.g. V2.01 JT3 Software checking: SOFTWARE VERSION CHECKING 2 - 1 2 - 1 3 - 13 - 1 SET BLOCK DIAGRAM 4 - 14 - 1 SET WIRING DIAGRAM 5 - 15 - 1 CIRCUIT DIAGRAM - MAIN BOARD DAB PART 5 - 25 - 2 CIRCUIT D

23、IAGRAM - MAIN BOARD SUB MCU PART 5 - 35 - 3 CIRCUIT DIAGRAM - MAIN BOARD TUNER PART 5 - 45 - 4 CIRCUIT DIAGRAM - MAIN BOARD INTERFACE PART LAYOUT DIAGRAM - MAIN BOARD TOP VIEW 5 - 5 5 - 5 LAYOUT DIAGRAM - MAIN BOARD BOTTOM VIEW 5 - 6 5 - 6 CIRCUIT DIAGARM - KEY BOARD 6 - 16 - 1 LAYOUT DIAGARM - KEY

24、BOARD TOP VIEW 6 - 26 - 2 LAYOUT DIAGARM - KEY BOARD BOTTOM VIEW 6 - 36 - 3 CIRCUIT DIAGARM - MCU BOARD PART 1 7 - 17 - 1 CIRCUIT DIAGARM - MCU BOARD MEMORY PART 7 - 27 - 2 LAYOUT DIAGARM - MCU BOARD TOP VIEW 7 - 37 - 3 LAYOUT DIAGARM - MCU BOARD BOTTOM VIEW 7 - 47 - 4 CIRCUIT DIAGARM - POWER AMP BO

25、ARD PART 1 8 - 18 - 1 CIRCUIT DIAGARM - POWER AMP BOARD PART 2 8 - 28 - 2 LAYOUT DIAGARM - POWER AMP BOARD TOP VIEW 8 - 38 - 3 LAYOUT DIAGARM - POWER AMP BOARD BOTTOM VIEW 8 - 48 - 4 9 - 19 - 1 CIRCUIT DIAGRAM - CD BOARD PART 1 9 - 29 - 2 CIRCUIT DIAGRAM - CD BOARD HP AMP PART 9 - 39 - 3 CIRCUIT DIA

26、GRAM - CD BOARD LCD PART LAYOUT DIAGRAM - CD BOARD TOP VIEW 9 - 49 - 4 LAYOUT DIAGRAM - CD BOARD BOTTOM VIEW 9 - 59 - 5 10 - 110 - 1 CIRCUIT DIAGRAM - HEADPHONE BOARD LAYOUT DIAGRAM - HEADPHONE BOARD TOP VIEW LAYOUT DIAGRAM - HEADPHONE BOARD BOTTOM VIEW CIRCUIT DIAGRAM - MOTOR BOARD TOP VIEW 10 - 21

27、0 - 2 CIRCUIT DIAGRAM - MOTOR BOARD CIRCUIT DIAGRAM - MOTOR BOARD BOTTOM VIEW CIRCUIT DIAGRAM - DOOR SWITCH BOARD TOP VIEW 10 - 310 - 3 CIRCUIT DIAGRAM - DOOR SWITCH BOARD CIRCUIT DIAGRAM - DOOR SWITCH BOARD BOTTOM VIEW 1 2 3 6 89 10 1112 1314 15 161718 19 2723-2629 3031212022 SET MECHANICAL EXPLODE

28、D VIEW 11 - 111 - 1 MECHANICAL & ACCESSORIES PARTS LIST 1996510016420LIGHT GUIDE DISPLAY LENSW25: 99651001641520P FFC CABLE L200MM P1.0MM 2996510016421CABINET REARW35: 99651001641418P FFC CABLE L200MM P1.0MM 3996510016422STAND BASEANT2 5: 99651001641316P FFC CABLE 60MM P1.0MM 4996510016423WOODEN SPE

29、AKER (L+R) 5996510001906AUX STEREO CORD BLACK 6996510016424CD DOOR LENS 7996510016442CD AMBI LIGHT GUIDE LENS 8996510016425SLIDE CD DOOR 9996510016426ROTATED CD DOOR 10996510016427CONTROL PANEL 11996510016428COVER ROTATED CD DOOR 12996510003940DOOR MOTOR RF-500TB-14415 13996510003909FF/FW BUTTON 149

30、96510003921COVER PLAY BUTTON 15996510003923GEAR WHEEL A 16996510003924GEAR WHEEL BNote: Only these parts mentioned in the list are 17996510003926PULLEY SERVO MOTOR normal service parts. 18996510016429CABINET FRONT 19996510016430BUTTON POWER 20996510016431BUTTON SET FUNCTION A 21996510016432BUTTON SE

31、T FUNCTION B 22996510016433BUTTON SET NAVIGATION 23996510016434FRAME COSMETIC TOP LEFT 24996510016435FRAME COSMETIC BOTTOM LEFT 25996510016436FRAME COSMETIC BOTTOM RIGHT 26996510016437FRAME COSMETIC TOP RIGHT 27996510016446FRAME LCD 28996510016438GEAR HOLDER BRACKET A 29996510016439GEAR HOLDER BRACK

32、ET B 30996510016440RACK HOLDER BRACKET A 31996510016441RACK HOLDER BRACKET B 32996510003766ANT WIRE ASSEMBLY L2500MM CDM996510016412CD MECHANISM M93BGP-BF ACCO !996510003937AC CORD 0.71M BS TYPE ADAPT!996510016418SW MODE POWER SUPPLY 19V REMOTE996510016417REMOTE CONTROL W199651001641620P FFC CABLE L

33、220MM P1.0MM 11 - 2 ELECTRICAL PARTS LIST C812996510016408E. CAP. 3300UF 35V 16X36MMQ801996510010777TRANSISTOR BC847C FREE CN552996510003885USB SOCKETQ802996510010777TRANSISTOR BC847C FREE D460996510010774DIODE 1N4148 FDLL4148Q803996510010777TRANSISTOR BC847C FREE D461996510010774DIODE 1N4148 FDLL41

34、48Q806996510016407TRANSISTOR BC817-40 SOT23 D462996510010774DIODE 1N4148 FDLL4148Q808996510003718TRANSISTOR KTC-8550C D463996510003726BARRIER DIODE PRLL5817Q809996510012793TRANSISTOR BC847B D466996510003726BARRIER DIODE PRLL5817Q810996510012793TRANSISTOR BC847B D801996510010774DIODE 1N4148 FDLL4148Q

35、811996510012793TRANSISTOR BC847B D802996510010770RECTIFIER DIODE 1N5822Q814996510012793TRANSISTOR BC847B DAB601 996510003725DAB TUNER MODULEQ815996510003718TRANSISTOR KTC-8550C DCJ9965100010546.5MM DC JACK (DJ32-2)Q816996500039268TRANSISTOR KTC-8050C HPJ994000001456STEREO HEADPHONE JACKSW55199650003

36、9269TACT SWITCH IC460996510016411IC PROGRAMMED FOR MCB279SW552996500039269TACT SWITCH IC461996510003845IC LP2950ACZ-3.3 TO-92SW553996500039269TACT SWITCH IC531996510016296 IC YD7000SW554996500039269TACT SWITCH IC601996510003732 IC TB2132FNGSW560996500039269TACT SWITCH IC602994000003215RDS IC SAA6581

37、TSW561996500039269TACT SWITCH IC660996510003731IC V REGULATOR LD1117-3.3SW562996500039269TACT SWITCH IC701996510003730IC SAA7824HL/M1A 557SW563996500039269TACT SWITCH IC702994000005753IC D9258PHSW564996500039269TACT SWITCH IC703996510003896IC TA7291S(M) (MOTOR DRIVER)SW565996500039269TACT SWITCH IC8

38、01996510016406IC TDA8932TSW566996500039269TACT SWITCH IC802996510016406 IC TDA8932TSW567996500039269TACT SWITCH IC803996510003731 IC V REGULATOR LD1117-3.3SW568996500039269TACT SWITCH IC804996510003844IC VOLTAGE REGULATORSW569996500039269TACT SWITCH IC806996510005007IC LM2576 T-5.0 TO-220SW570996500

39、039269TACT SWITCH IC902996510003846IC SC7314 SELECTOR & E_VOLSW790996510016419DOOR SWITCH DTS-03-KL H:8.5M IR501996510011311INFRA REM CONTROL RECEIVER SW791996510016419DOOR SWITCH DTS-03-KL H:8.5M LCD996510016445LCD DISPLAY FOR MCB279U1996510003740 IC WM8725ED 14-PIN SOIC LED501 996510003894LED INDI

40、CATOR WHITEU2996510016409 IC SST39VF800A-70 PROGRAM LED502 996510001422LED INDICATOR BLUEU3996510003733 IC UTCLD1117/A 1.8V SOT-223 LED503 996510001422LED INDICATOR BLUEU4996510016299 IC HY57V641620FTP-7 64M SD LED551 996510003893LED INDICATOR RED EL-204HD 3MU5996510003739IC TCC760 PTJ996510000380PU

41、SH TERMINAL JACK PST-418U7996510003738 IC MAX809STR SOT-23 Q601996510012793TRANSISTOR BC847BVD601 996510003727 DIODE 1SV262 Q602996510012793TRANSISTOR BC847BVD602996510003727DIODE 1SV262 Q603996510012793TRANSISTOR BC847BX460996510003839XTAL 32.768KHZ 12.5PF Q660996510012793TRANSISTOR BC847BX60199651

42、0003724XTAL 75KHZ 20PF +/-20PPM Q661996510002323TRANSISTOR S8550 SMD TYPEX602994000003209XTAL 4.332MHZ HC-49/S Q662996510012793TRANSISTOR BC847BX701994000005742XTAL 8.4672 MHZ 20PF 11 - 3 ELECTRICAL PARTS LIST Y1996510003735XTAL 24.000MHZ 20PF +/-20PPM ZD601996510016410DIODE BZX79-C3V3 SOD27 ZD804994000005744ZENER DIODE 5V1 1/2W ZD805996510012835ZENER DIODE 5V6 1/2W (TC5V6) Note: Only these parts mentioned in the list are normal service parts. 11 - 4