Philips MCB279 User manual

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 permission 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
Specifications .......................................................................1-3
Measurement Setup.............................................................1-4
Service Aids, Safety 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
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/12 /58
niRDC/nixuA
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 BOARD
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
-- Used
C
/12 /05 8559//16/85/
Feature diffrence
KEY BOARD C
C
C
DAB MODULE M
x
x
x
1 - 2
PCBS LOCATION
MOTOR BOARD C
C
MCU BOARD C
x
CD BOARD
HEADPHONE BOARD
KEY BOARD
MOTOR BOARD POWER AMP BOARD
MCU BOARD
MAIN BOARD
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1 - 3
AMPLIFIER
Output power ................................................ 30 W RMS
Signal-to-noise ratio ....................................... t65 dBA
Frequency response ............. 100 – 18kHz, ± 3 dB
Input sensitivity AUX ....................... 0.5 V (max. 1 V)
Impedance loudspeakers ..................................... t6:
Impedance headphones .................... 32 :-1000 :
.................................................................................... <15 mW
CD PLAYER
Frequency range ...................................... 100 – 18 kHz
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
SPEAKERS
Bass reflex system
Dimensions (w x h x d) .. 158 x 250x 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 (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
USB PLAYER
SPECIFICATIONS
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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. 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
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1 - 5
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
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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
1 - 6
Exchange CDM
1-4For description - see following pages
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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
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.
4
LIQUID LENS CLEANING
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
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.
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 PLAYABILITY
1 - 7
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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
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3 - 13 - 1
SET BLOCK DIAGRAM
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4 - 14 - 1
SET WIRING DIAGRAM
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5 - 15 - 1
CIRCUIT DIAGRAM - MAIN BOARD
DAB PART
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5 - 2 5 - 2
CIRCUIT DIAGRAM - MAIN BOARD
SUB MCU PART
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5 - 3 5 - 3
CIRCUIT DIAGRAM - MAIN BOARD
TUNER PART
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5 - 4 5 - 4
CIRCUIT DIAGRAM - MAIN BOARD
INTERFACE PART
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LAYOUT DIAGRAM - MAIN BOARD
TOP VIEW
5 - 5
5 - 5
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LAYOUT DIAGRAM - MAIN BOARD
BOTTOM VIEW
5 - 6
5 - 6
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CIRCUIT DIAGARM - KEY BOARD
6 - 1 6 - 1
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LAYOUT DIAGARM - KEY BOARD
TOP VIEW
6 - 2 6 - 2
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LAYOUT DIAGARM - KEY BOARD
BOTTOM VIEW
6 - 3 6 - 3
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CIRCUIT DIAGARM - MCU BOARD
PART 1
7 - 1 7 - 1
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