Philips FWM-462 Service Manual

280W Mini Hi-Fi System

�

FWM462

-/55/77/BK

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. ........................................................................

Layout diagram ..................................................................

Tuner board

Circuit diagram .......................................................................10-1

Layout diagram .......................................................................10-2

CD Board

Circuit diagram. ......................................................................

Layout diagram ..............................................................

MCU Board

Circuit diagram. .............................................................

Layout diagram ..............................................................

Exploded view diagram ...............................................................13-1

9-1

9-2..9-3

11-1

11-2..11-3

12-1..12-2 12-3..12-4

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 LX 1023 Service Audio Subject to modification

Version 1.0

3141 785 35290

Sound

• Total Sound Power (RMS): 280 W

• Output Power: 3600W PMPO

• Sound Enhancement: MAX Sound, Dynamic Bass Bo

ost 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, Sh

uffle Play, 40-Track Programmable

Audio Recording

• Recording Media: USB device

• USB recording modes: Instant record, Programme

d tracks, Schedule radio program,

Single disc, Single track

• USB recording sources: Aux, CD, Tuner, Microphone

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 Antenn

• USB: USB host

• Audio Connections: RCA Aux in, 3.5mm stereo li

ne 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): 90

0 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

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

49/

DISPLAY BOARD CD BOARD MCU BOARD

1 - 2

MEASUREMENT SETUP

Tuner FM

1-3

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).

Use Audio Signal Disc (replaces test disc 3)

DUT

SBC429 4822 397 30184

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

Recorder

Use Universal Test Cassette CrO2 SBC419 4822 397 30069

or Universal Test Cassette

LF Generator

e.g. PM5110

Fe SBC420 4822 397 30071

DUT

S/N and distortion met

e.g. Sound Technology ST170

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

SERVICE AIDS

1-4

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

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

ESD

CLASS 1

LASER PRODUCT

Lead free

INSTRUCTIONS ON CD PLAYABILITY

Customer complaint

"CD related problem"

Set remains closed!

check playability

2 - 1

playability

ok ?

Play a CD

for at least 10 minutes

check playability

playability

ok ?

"fast" lens cleaning

check playability

playability

ok ?

For flap loaders (= access to CD drive possible) cleaning method

4 is recommended

add Info for customer

"SET OK"

return set

1 - 4 For description - see following pages

Exchange CDM

INSTRUCTIONS ON CD PLAYABILITY

2 - 2

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

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

10seconds

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

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.

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.

BLOCK DIAGRAM

3-1

TUNER

SI4730

8M SERIAL

FALSH

SST29VF080B

16M SDRAM

USB/SD

IIC

LCD

ET8862&

KEY PART

BX8800

128pin QFP

DRIVER IC FAN8100N

CONTROL DATA

3CDC

MOTOR DRIVER

BA5826

CD SERVO

BU9543

CD PCM

BCK,LRCK,

DATE

3CD LOADER

PICK UP

MOTOR

SENSOR

RC5/RC6 CODE

AUX

MICRO PHONE

PCM

BCK,LRCK

,DATE

INPUT

MUX

74LVC157

TUNER L/R

IIC

INPUT

PCM

ADC

WM8782

CD L/R

MUL-L/R

FUNCTION IC

TDA7468D

MAIN L/R

AMP

STK-433-

870

WIRING DIAGRAM

4-1

KEY1 BOARD

4-1

MCU BOARD

DISPLAY BOARD

MAIN BOARD

CD BOARD

AC BOARD

AMP BOARD

DISMANTLING INSTRUCTIONS

Dismantling of the CDC Module and Front Panel

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.

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.

Front View CDC

Sliding Out The CDC Tray

Remove CDC Module

4) Remove the Cover Tray CDC as indicated.

Remove Cover Tray CDC

Dismantling of Rear Portion

1)Remove 2 screws C as indicated to loosen the Tuner Board.

2)Remove 4 screws D&H as indicated to loosen the Main 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.

Dismantling of the PCB Board

1)Remove 4 screws J as indicated to loosen the AMP Board.

2)Remove 27 screws K&L as indicated to loosen the KEY1&2 Board.

3)Remove 2 screws M as indicated to loosen the USB Board.

+ 21 hidden pages