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Philips MCM238 Service Manual
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Philips MCM238 Service Manual

Philips MCM238 Service Manual

Dvd mini hi-fi system
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Download this manual See also: User Manual
Service AIDS & CD playability ...........................1-1...1-4
Specifications ................................................................2
Connection & Controls ...................................................3
Disassembly Instructions ...............................................4
Block & Wiring diagrams ................................................5
C-MUSIC & USB BOARD ..............................................6
KEY & USB JACK BOARD ............................................7
POWER & AMP JACK BOARD ......................................8
EXPLODE DIAGRAM .....................................................9
SERVICE PARTLIST ....................................................10
FACTORY PARTLIST ...................................................11
MCM238
3141 785 32000

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Summary of Contents for Philips MCM238

  • Page 1 MCM238 Service AIDS & CD playability ......1-1...1-4 Specifications ..............2 Connection & Controls ...........3 Disassembly Instructions ..........4 Block & Wiring diagrams ..........5 C-MUSIC & USB BOARD ..........6 KEY & USB JACK BOARD ..........7 POWER & AMP JACK BOARD ........8 EXPLODE DIAGRAM .............9 SERVICE PARTLIST ............10...

  • Page 2: Service Aids

    SERVICE AIDS Compact Disc: Service Tools: SBC426/426A Test disc 5 + 5A ......4822 397 30096 Universal Torx driver holder .........4822 395 91019 SBC442 Audio Burn-in test disc 1kHz ....4822 397 30155 Torx bit T10 150mm ...........4822 395 50456 SBC429 Audio Signals disc .........4822 397 30184 Torx driver set T6-T20 .........4822 395 50145 Dolby Pro-logic Test Disc ........4822 395 10216 Torx driver T10 extended ........4822 395 50423...

  • Page 3: Cd Playability Check

    1- 2 CD PLAYABILITY CHECK Customer complaint "CD related problem" Set remains closed! check playability playability ok ? For flap loaders (= access to CD drive possible) "fast" lens cleaning cleaning method is recommended check playability Standard repair procedure playability ok ? clean the lens check playability...

  • Page 4: Customer Information

    CD PLAYABILITY CHECK PLAYABILITY CHECK LIQUID LENS CLEANING Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. For sets which are compatible with CD-RW discs This to avoid that little particles make scratches on use CD-RW Printed Audio Disc ....7104 099 96611 the lens.
  • Page 5 CD PLAYABILITY CHECK EYE-PATTERN SIGNAL – JITTER MEASUREMENT CD DRIVE – LASER CURRENT MEASUREMENT Measure the signal on the input of the Signal processor The laser current can be measured as a voltage drop on a using an analog oscilloscope. Please find the exact resistor.

  • Page 6: General Information

    2 - 1 ( MCM238 & MCM239 & MCM239D ) AMPLIFIER SPEAKERS Output power .......... 2 x 5 W RMS Bass reflex system Signal-to-noise ratio ........≥ 65 dBA Dimensions (w x h x d) .. 158 x 250x 118 (mm) Frequency response .....

  • Page 7: Connection And Controls

    3 - 1 CONNECTION AND CONTROLS...
  • Page 8 3 - 2 CONNECTION AND CONTROLS...
  • Page 9 3 - 3 CONNECTION AND CONTROLS...

  • Page 10: Disassembly Diadrams

    4 - 1 4 - 1 DISASSEMBLY DIADRAMS E. Remove Key board D. Remove Main board C. Remove Amplifier board A. Remove stand E1:Remove screws MP 2x8 - 8 pcs. D1:Remove screws MP 3x10 - 3 pcs. C1: Remove screws 2 pcs. Then remove lens frame cosmetic botom_right&left Rlease click and pull it out.

  • Page 11: Set Block Diagram

    5 - 1 5 - 1 SET BLOCK DIAGRAM...
  • Page 12 5 - 2 5 - 2 SET W IRING DIAGRAM...

  • Page 13: C-Music & Usb Board

    6 - 1 6 - 1 CIRCUIT DIAGRAM - C-music & USB BOARD - part1...
  • Page 14 6 - 2 6 - 2 CIRCUIT DIAGRAM - C-music & USB BOARD - part2...
  • Page 15 6 - 3 6 - 3 LAYOUT DIAGRAM - C-music & USB BOARD...

  • Page 16: Key & Usb Jack Board

    7 - 1 7 - 1 KEY & USB JACK BOARD...

  • Page 17: Power & Amp Jack Board

    8 - 1 8 - 1 CIRCUIT DIAGRAM - POWER & AMP JACK BOARD...
  • Page 18 8 - 2 8 - 2 LAYOUT DIAGRAM - POWER & AMP BOARD...

  • Page 19: Explode Diagram

    EXPLODE DIAGRAM...

  • Page 20: Accessory Parts

    10-1 ACCESSORY PARTS 9965 100 06998 REMOTE CONTROL "PHILIPS" 9965 100 06999 SPK BOX 8OHM 75W FOR MCM238 9965 100 00131 AM LOOP ANT 18.1uH 8T 9965 100 00308 FM ANT WIRE 75R L1.0M 9965 100 07000 SMPS ADAPTOR 15V 1.2A FOR EU 9965 100 07001 STAND PORTION OF MCM238/12 MECHNICAL&MISCELLANEOUS PARTS...

  • Page 21: Electrical Parts - Power Board

    R940 9940 000 04221 FUSE RES 2.2R 1/4W +/-5% U902 9965 100 01350 IC LM78L05 3-TERMINAL TO-92 U904 9965 100 06962 IC SAA6581T RDS (PHILIPS)SO16 X901 9965 100 06961 CRYSTALHC-49/U4.332MHZ+/-20PPM ELECTRICAL PARTS - POWER BOARD D801 9965 100 06964 DIODE 1N5819 DO-41...
  • Page 22 10-3 ELECTRICAL PARTS - POWER BOARD Q813 9965 100 06954 CH-TRANSISTOR,BC817-25 Q814 9965 100 06953 CH-TRANSISTOR, BC847C SOT-23 R825 9965 100 06963 FUSE RES, 10R 1W +/-5% U801 9965 100 01348 IC POWER AMPLIFIER TFA9842BJ. U803 9965 000 41716 IC, CMOS RESET BD4844G SSOP5 U804 9965 100 06967 IC AZ1117-3.3E1 VOLTAGE REG ZD803...
  • Page 23 Unit Location 0010 9008-023800012 PHILIPS MCM238//12 1.000 0010 8900-061100500 ELECTRICAL SECTION OF MCM238/12 1.000 0010 8901-061100300 MAIN/TUNER PWB ASSEMBLY OF MCM238/12 1.000 ...3 0010 3702-023900130 MAIN PWB 204.2X196X1.2MM FR4 MCM239D-01V1.2 1.000 ...3 0020 8901-061100400 MAIN BOARD ASSEMBLY OF MCM238/12 1.000 ..4...
  • Page 24 11-2 FACTORY BOM Level Item Component Desc Unit Location R120,R121,R123,R124,R125,R139,R1 40,R148,R157,R161,R163,R172,R174 ,R201,R202,R216,R217,R240,R250,R ..4 0490 1221-103062020 CH-RES,10K1/16W+/-5%0603 37.000 270,R271,R272,R277,R282,R283,R28 4,R289,R297,R404,R414,R429,R430, R637,R639,R701,RD103,RD104 ..4 0510 1221-153062020 CH-RES,15K1/16W+/-5%0603 1.000 R122 ..4 0520 1221-183062020 CH-RES,18K1/16W+/-5%0603 1.000 R162 ..4 0530 1221-223062020 CH-RES,22K1/16W+/-5%0603 3.000 R180,R405,R415 ..4 0540 1221-333062020 CH-RES,33K1/16W+/-5%0603 1.000...
  • Page 25 IC SAA6581T RDS (PHILIPS) (935268605118)SO16 1.000 U904 ..4 0140 1512-007805030 IC LM78L05 3-TERMINAL POSITIVE REGULATORS TO-92 1.000 U902 0020 8905-061100500 KEY/POWER PWB ASSEMBLY OF MCM238/12 1.000 ...3 0010 3701-023900210 PWB 214X185.6X1.6MM/2(POWER/KEY) 94V0 MCM239D-02 1.000 ...3 0020 8905-061100600 POWER PWB ASSEMBLY OF MCM238/12 1.000...
  • Page 26 6011-230060400 SCREW, STTP M 3X6 A013006000 2.000 2-IC&HEATSINK ..4 0690 8016-000000100 FM ANT CONTACT PIN 1.000 PAD802 ...3 0030 8910-061100200 KEY PWB ASSEMBLY OF MCM238/12 1.000 ..4 0010 1121-102081020 CH-CAP, CER 1000PF50V+/-5%0603 2.000 C220,C221 ..4 0020 1221-000062020 CH-RES,0 OHM1/16W+/-5%0603 1.000 R221 ..4...
  • Page 27 0010 7103-030300100 LABEL DON'T TOUCH THE LENS 1.000 ...3 0020 7107-030600100 LABEL (QC) 1.000 ...3 0030 7111-061100200 LABEL TYPE PLATE 52X35MM (MCM238/12) 1.000 ...3 0040 7101-061100200 LABEL CARTON BOX 83x103MM (MCM238/12) 1.000 ...3 0050 7112-050700100 LABEL "UWAGA! .." 1.000 ...3...
  • Page 28 0040 3009-001000100 FM ANT WIRE 75OHM L=1.0M BLACK W/STV8-1H 1.000 0045 4011-060600010 SMPS ADAPTOR 15V 1.2A FOR EUROPE (IMPORT230~240V)VDE 1.000 0060 8951-061100100 STAND PORTION OF MCM238/12 1.000 ...3 0010 5912-061100100 AND BASE 1.000 ...3 0020 6802-061100200 STEEL FOR STAND BASE.

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