Philips MCD137 User manual

Version 1.0
MCD137
3141 785 32720
DVD Micro Theater
-93/98
Published by LX 0822 Service Audio Subject to modification
© 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 permission of Philips.
CONTENTS
Technical specification ..................................................................1-2
Service measurement setup..........................................................1-3
Service aids .................................................................................1-4
Instructions on CD playability ...............................................2-1.. 2-2
Block diagram................................................................................3-1
Wiring diagram ..............................................................................4-1
Display board
Circuit diagram .........................................................................5-1
Layout diagram.........................................................................5-2
Rectifier board
Circuit diagram .........................................................................6-1
Layout diagram.........................................................................6-2
DVD board
Circuit diagram ..................................................................7-1..7-5
Layout diagram.........................................................................7-6
Exploded view diagram .................................................................8-1
Service parts list ............................................................................9-1

SYSTEM
Power supply ..... ...............................220-240V / 50Hz
Rated working power consumption (1/8 rated
output power) ....................................................... ≤40 W
Output power ........................ 2 x 5W + 10W RMS
(L/R speakers + subwoofer)
DVD
Frequency response .............. 20Hz-20kHz (±3dB)
Video output ................................................................ 1 VP-P
Horizontal definition ................................... ≥500 (TV)
Dimensions ....... 215(W) x 90 (H) x 217(D) mm
Weight ......................................................................... 1.14 kg
L/R SPEAKER
System ........................................................... 1-way system
Impedance.........................................................................8 Ω
Dimensions (w x h x d) ....................................................
.......................................... 115mm x 120mm x 198mm
Weight .........................................................................................
......................................................................... 0.78 kg (each)
SUBWOOFER
System ................................................. bass reflex system
Impedance........................................................................ 4 Ω
Dimensions (w x h x d) ....................................................
.......................................... 289mm x 167mm x 198mm
Weight ............................................................................ 3.1 kg
REMOTE
Distance............................................................................... 6m
Angle ............................................................................... ± 300
Specifications and external appearance
are subject to change without notice.
TECHNICAL SPECIFICATION
1 - 2

1-3
LF Generator
e.g. PM5110
Recorder
Use Universal Test Cassette CrO2 SBC419 4822 397 30069
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion met
e
e.g. Sound Technology ST170
L
R
DUT
or Universal Test Cassette Fe SBC420 4822 397 30071
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. PM2534
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 Faraday´s cage.
Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 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:
Tuner FM
MEASUREMENT SETUP

1-4
SERVICE AIDS
GB WARNING
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.
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 symbol !.
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
3For flap loaders (= access to CD drive possible)
cleaning method 4is recommended
INSTRUCTIONS ON CD PLAYABILITY
2 - 1
Exchange CDM
1-4For description - see following pages