Philips FWM462 User manual

Version 1.0
FWM462
3141 785 35290
280W Mini Hi-Fi System
-/55/77/BK
Published by LX 1023 Service Audio Subject to modification
© Copyright 2010 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
Version variation ...........................................................................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
Disassembly diagram............ ................................................5-1..5-2
Main board
Circuit diagram .........................................................................6-1
Layout diagram..................................................................6-2..6-3
AC board
Circuit diagram .........................................................................7-1
Layout diagram..................................................................7-2..7-3
Display board
Circuit diagram .........................................................................8-1
Layout diagram..................................................................8-2..8-3
AMP & Power Board
Circuit diagram. ........................................................................9-1
Layout diagram..................................................................9-2..9-3
Tuner board
Circuit diagram .......................................................................10-1
Layout diagram.......................................................................10-2
CD Board
Circuit diagram. ...................................................................... 11-1
Layout diagram.............................................................. 11-2..11-3
MCU Board
Circuit diagram. .............................................................12-1..12-2
Layout diagram..............................................................12-3..12-4
Exploded view diagram ...............................................................13-1
All manuals and user guides at all-guides.com
all-guides.com

Sound
• Total Sound Power (RMS): 280 W
• Output Power: 3600W PMPO
• Sound Enhancement: MAX Sound, Dynamic Bass
Boost 3 steps, Digital Sound Control 4 modes,
Incredible Surround, Virtual Ambience Control
• Output power (RMS): 4 x 70W / ch
Loudspeakers
• Main Speaker: 2 way, 2" tweeter, Bass Reflex
Speaker System, 6.5" woofer
• Number of Loudspeakers: 2
Audio Playback
• Loader Type: 3 CD Carousel
• Number of Discs: 3
• Playback Media: CD, CD-R, CD-RW, MP3-CD,
WMA-CD
• USB Direct Modes: Delete, Fast Backward/Fast
Forward, Play/Pause, Previous/Next, Repeat,
Shuffle, Stop
• Disc Playback Modes: Repeat/one/disk/program,
Shuffle Play, 40-Track Programmable
Audio Recording
• Recording Media: USB device
• USB recording modes: Instant record,
Programmed tracks, Schedule radio program,
Single disc, Single track
• USB recording sources: Aux, CD, Tuner,
Microphone in
Tuner/Reception/Transmission
• Auto digital tuning
• Station presets: 40
• Tuner Bands: MW, FM Stereo
• Tuner Enhancements: Auto Store, Easy Set (Plug &
Play)
Connectivity
• Microphone: Dual Microphone sockets
• Other connections: FM Antenna, MW Antenna,
AM Antenna
• USB: USB host
• Audio Connections: RCA Aux in, 3.5mm stereo
line in -MP3 link
Convenience
• Alarms: CD Alarm, USB alarm, Radio Alarm, Sleep
timer
• Clock: On main display
• Display Type: LCD
• Karaoke: MIC volume, Echo control
Accessories
• Included accessories: FM/MW Antenna, *Flat pin
adaptor, Batteries for remote control, AC Power
Cord
• Remote control: 36-key with 2xAAA batteries
• Guarantee booklet: Global version
• User Manual: Spanish, B-Portuguese
• Quick start guide: Spanish, B-Portugues
• Cables: MP3 Line in Cable
Dimensions
• Set dimensions (W x H x D): 265 x 310 x 390 mm
• Packaging dimensions (W x H x D):
900 x 440 x 326 mm
• Weight incl. Packaging: 15.92 kg
• Speaker Depth: 273 mm
• Speaker Height: 358 mm
• Speaker Width: 230 mm
Power
• Power supply: 100-240VAC, 50/60Hz
•
TECHNICAL SPECIFICATION
1 - 2
Type /Versions:
Features
Board in used:
FWM462
Service policy
AC BOARD
MAIN BOARD
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
-- Used
/55 /00 /77 89/39/KB/
Feature diffrence
RDS
VOLTAGE SELECTOR
ECO STANDBY - DARK
Type /Versions:
FWM462
/55 /00 /77 89/39/KB/
VERSION VARIATION
C/M
C/M
TUNER BOARD
AMP & POWER BOARD
49/
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
C/M
49/
DISPLAY BOARD
CD BOARD
MCU BOARD
All manuals and user guides at all-guides.com

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
All manuals and user guides at all-guides.com

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
All manuals and user guides at all-guides.com

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
All manuals and user guides at all-guides.com

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
2 - 2
All manuals and user guides at all-guides.com
all-guides.com

BLOCK DIAGRAM
3-1 3-1
CD SERVO
BU9543
BX8800
128pin QFP
INPUT
RC5/RC6 CODE
LCD
ET8862&
KEY PART
MAIN L/R
INPUT
RC
SENSOR
16M SDRAM
8M SERIAL
FALSH
SST29VF080B
PICK UP
MOTOR
MOTOR
ADC
WM8782
3CDC
DRIVER IC
FAN8100N
MUX
74LVC157
AUX
TUNER
SI4730
MICRO
PHONE
USB/SD
MOTOR DRIVER
BA5826
IIC
MUL-L/R
IIC
PCM
BCK,LRCK
,DATE
PCM
CD L/R
TUNER L/R
CONTROL DATA
CD PCM
BCK,LRCK,
DATE
AMP
STK-433-
870
FUNCTION IC
TDA7468D
3CD LOADER
FL
FR
All manuals and user guides at all-guides.com

WIRING DIAGRAM
4-1 4-1
DISPLAY BOARD
KEY1 BOARD
MAIN BOARD
AC BOARD AMP BOARD
MCU BOARD
CD BOARD
All manuals and user guides at all-guides.com

DISMANTLING INSTRUCTIONS
1) Loosen 4 screws to remove the Cover Top of the set.
2) Loosen 2 screws to remove the Panel Left and 2 screws to
remove the Panel Right of the set.
3) Slide out the CDC Tray as shown in the diagram below with
the help of a flat head screw driver.
Dismantling of the CDC Module and Front Panel
Remove CDC Module
4) Remove the Cover Tray CDC as indicated.
Sliding Out The CDC Tray
Front View CDC
Remove Cover Tray CDC
5) Loosen 2 screws A and 2 screws B to remove the CDC
Module as indicated.
6) Remove 2 screws at the bottom to separate the
Front Panel Assembly from the Plate Bottom.
All manuals and user guides at all-guides.com

Dismantling of Rear Portion
Dismantling of the PCB Board
1)Remove 2 screws C as indicated to loosen the Tuner Board.
3)Remove 6 screws E&I as indicated to loosen the Power Board.
4)Remove 3 screws F as indicated to loosen the Bottom Cabinet.
5)Remove 2 screws G as indicated to loosen the Front Cabinet.
2)Remove 4 screws D&H as indicated to loosen the Main Board.
3)Remove 2 screws M as indicated to loosen the USB Board.
2)Remove 27 screws K&L as indicated to loosen the KEY1&2 Board.
1)Remove 4 screws J as indicated to loosen the AMP Board.
C
F
D
EG
H
I
J
K
LM
All manuals and user guides at all-guides.com