Philips MCM-204, MCM-204-B Service Manual

Micro System
MCM204/all version
MCM204B
/61
TABLE OF CONTENTS
Page
Location of PCBs ..................................................................1-2
Specifi cations .......................................................................1-3
Measurement Setup .............................................................1-4
Service Aids, Safety Instruction, etc .....................................1-5
CD Playability Check ..................................................1-6 to 1-7
Software Version Checking .....................................................2
Set Block Diagram ...................................................................3
Set Wiring Diagram .................................................................4
Main & Power Board................................................................5
Front/MCU Board ....................................................................6
CD MP3 Board ........................................................................7
Set Mechanical Exploded View & Parts List ............................8
Revision List ............................................................................9
©
Copyright 2007 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 permission of Philips.
Published by SL 0830 Service Audio Printed in The Netherlands Subject to modification
CLASS 1
LASER PRODUCT
© 3141 785 31326
LOCATION OF PCBs
Main Board
1-2
CD Drive
CD MP3 Board
VERSION VARIATIONS
Board in used:
MAIN BOARD CD MP3 BOARD POWER BOARD FRONT/MCU BOARD
Type /Versions:
Service policy
/05 /12
C/M
C/M
M C C
M C C
Front / MCU Board
/77
C/M
C/M
M C C
Power Board
MCM204 & MCM204B
96//61
C/M
M
M
C
C
C
C
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
-- Used
x
SPECIFICATIONS
1-3
AMPLIFIER
Output power ........................................... 2 x 4W RMS
Signal-to-noise ratio .......................... t 60 dBA (IEC)
Frequency response ....................... 125 – 16000 Hz
Impedance loudspeakers ........................................... 4:
CD PLAYER
Frequency range ............................... 125 – 16000 Hz
Signal-to-noise ratio ............................................ 65 dBA
TUNER
FM wave range ................................... 87.5 – 108 MHz
MW wave range ................................ 531 – 1602 kHz
Sensitivity at 75 :
– FM 26 dB sensitivity .......................................... 20 µV
– MW 26 dB sensitivity ................................... 5 mV/m
Total harmonic distortion ..................................... d 5%
TAPE DECK
Frequency response
Normal tape (type I) ...... 125 – 8000 Hz (8 dB)
Signal-to-noise ratio
Normal tape (type I) .................................... 40 dBA
Wow and flutter .............................................. d 0.4% JIS
SPEAKERS
Bass reflex system Dimensions (w x h x d) . 146 x 228 x 160 (mm)
GENERAL INFORMATION
AC Power ..................................... 220 – 230 V / 50 Hz
Dimensions (w x h x d) ... 146 x 228 x 216(mm)
Weight (with/without speakers) ..................................
............................................................... approx. 4.4 / 2.0 kg
Power consumption
Active .......................................................................... 30 W
Standby .................................................................... < 5 W
Eco Power Standby ........................................... < 1 W
Specifications and external appearance are subject to change without notice.
MEASUREMENT SETUP
Tuner FM
1-4
Bandpass
LF Voltmeter
e.g. PM2534
RF Generator
e.g. PM5326
DUT
250Hz-15kHz
e.g. 7122 707 48001
Ri=50
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).
Tuner AM (MW,LW)
RF Generator
e.g. PM5326
Ri=50
DUT
Frame aerial
e.g. 7122 707 89001
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
S/N and distortion meter
e.g. Sound Technology ST1700B
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).
CD
Use Audio Signal Disc (replaces test disc 3)
DUT
L
R
SBC429 4822 397 30184
S/N and distortion meter
e.g. Sound Technology ST1700B
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
Recorder
Use Universal Test Cassette CrO2 SBC419 4822 397 30069
or Universal Test Cassette Fe SBC420 4822 397 30071
LF Generator
e.g. PM5110
DUT
L
R
S/N and distortion meter
e.g. Sound Technology ST1700B
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
SERVICE AIDS
1-5
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
GB
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 set via a wrist wrap with resistance. Keep components and tools also at this potential.
WARNING
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 symbol
!
.
Compact Disc:
SBC426/426A Test disc 5 + 5A ...........................4822 397 30096
SBC442 Audio Burn-in test disc 1kHz .................4822 397 30155
SBC429 Audio Signals disc .................................4822 397 30184
Dolby Pro-logic Test Disc ....................................4822 395 10216
ESD
CLASS 1
LASER PRODUCT
Lead free
INSTRUCTIONS ON CD PLAYABILITY
Customer complaint
"CD related problem"
Set remains closed!
check playability
1
1-6
playability
ok ?
Y
Play a CD
for at least 10 minutes
check playability
playability
ok ?
Y
N
"fast" lens cleaning
check playability
playability
ok ?
N
3
For flap loaders (= access to CD drive possible) cleaning method
4 is recommended
Standard repair procedure
N
Y
clean the lens
check playability
playability
ok ?
check "EYE-Pattern"
4
Y
N
5
return set
add Info for customer
"SET OK"
return set
1 - 7
For description - see following pages
2
replace Signal Processor
return set
EYE-Pattern
ok ?
Y
check Laser current
Laser current
ok ?
Y
check CD Drive offsets
Y
CD Drive offsets
ok ?
N
replace CD Drive
6
return set
N
replace CD Drive
7
return set
N
replace CD Drive
return set
INSTRUCTIONS ON CD PLAYABILITY
1-7
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 (600µ 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 (search) within a reasonable time
For all other sets
use CD-DA SBC 444A..................................4822 397 30245
TR 14 (600µ Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000µ wedge)
• playback of all these tracks without audible disturbance playing time for: 1000µ wedge 10seconds
Fingerprint 10seconds Black dot from 01:05 to 01:25
• jump forward/backward (search) within a reasonable time
4
LIQUID LENS CLEANING
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.
Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must 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 (don’t press too hard) with 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.
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-protected 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
FAST LENS CLEANING (dry brush)
Use lens cleaning CD
SBC AC300...........................................9082 100 00043
Insert the lens cleaning CD, press PLAY and follow the voice guide´s instructions on the CD.
SOFTWARE VERSION CHECKING
2-1
2-1
T o hold DSC & SKIP NEXT depressed while set on standby
Display shows the
ROM version
"VER y.yy MTP xx-xx-2007"
V refers to Version y.yy refers to Software version number of the uProcessor
(counting up from 01 to 99) xx refers to date number of the production.
SET BLOCK DIAGRAM
3-1
3-1
SET WIRING DIAGRAM
4-1
4-1
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