Philips FWM608 Schematic

Subwoofer Mini Hi-Fi System

�

FWM608

-/12/05

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

Disassembly diagram............ ................................................5-1..5-2

Main board

Circuit diagram ..................................................................6-1..6-2

Layout diagram ..................................................................6-3..6-4

Tuner board

Circuit diagram .........................................................................7-1

Layout diagram .........................................................................7-2

Front board

Circuit diagram .........................................................................8-1

Layout diagram ..................................................................8-2..8-3

AMP board

Circuit diagram .........................................................................9-1

Layout diagram .........................................................................9-2

CD Board

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

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

MCU Board

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

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

Exploded view diagram ...............................................................12-1

Mechanical parts list ...........................................................12-2..12-3

Electrical parts list...............................................................13-1..13-2

10-1

10-2..10-3

11-1 11-2

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 0946 Service Audio Subject to modification

Version 1.0

3141 785 34530

Total output power 600W RMS Frequency response 60 - 16kHz Signal-to- noise ratio >67dB A (IEC) Aux input 500mV/700mV

Disc

Laser type Semiconductor Disc diameter 12cm/8cm Support disc CD-DA, CD-R, CD-

RW, MP3-CD, WMA-

CD Audio DAC 24Bits / 44.1kHz Total harmonic

distortion <1.5% Frequency response 60Hz -16kHz (44.1kHz) S/N ratio >75dBA

Tuner

Tuning range FM: 87.5 - 108MHz;

MW (AM):

531 - 1602kHz Number of presets 40 FM 75ohm wire MW (AM) Loop antenna

Speakers

Speaker Impedance 3ohm Woofer 2 x 5.25” Tweeter 2 x 1.75” Dimensions

(W x H x D) 225 x 430 x 275mm Weight 4.928kg each

Subwoofer

Speaker impedance 6ohm Speaker driver 8” Output power 180W Dimensions ( W x H

x D) 274 x 430 x 340mm Weight 6.747kg

General information

AC power 220 - 230V, 50Hz Operation power

consumption 130W Standby power

consumption <20W Eco Standby power

consumption <1W USB direct Version 2.0/1.1 Dimensions

Main Unit (W x H x D) 265 x 345 x 382mm Weight (without

speakers) 8.505kg

TECHNICAL SPECIFICATION

Type /Versions:

Features

Board in used:

FWM608

Service policy

DISPLAY(FRONT) BOARD MAIN BOARD

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair

√ -- Used

/05 /12

/55

89/16/37/

Feature diffrence

RDS & DAB VOLTAGE SELECTOR ECO STANDBY - DARK

√

Type /Versions:

/05 /12

/55

89/16/37/

VERSION VARIATION

39/

C C

√

AMP BOARD MCU BOARD CD BOARD

C M M

FWM608

√

C C

√

C M M

TUNER BOARD

M M

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 3-1

3CDC CD Loader

PICK-UP MECHA

SANYO : DA-11VF

CD PCB BOARD

MCU PCB BOARD

RECORD TIME

(74LVC2G04)

SDRAM

16Mbit

NOR FLASH

SI636165

4 CH

MOTOR DRIVER

(BA5826)

ROHM

RF AMP+SSP+DSP

(BU9543)

MUX

74VC157

ADC

WMA8781

MCS LOGIC BX8805

MP3/WMA En/De + MCU +USB/CARD

PLL Tuner

Si4730/4731

TIME/CLOCK(H

T1381)

Spectrum analyzers

LED controller

for Light Box

(May use)

USB SOCKET

DISPLAY

VFD

KEY BOARD

Port Expander 74HC4094

MAIN PCB BOARD

AMP PCB BOARD

SUBWOFFER

TDA8920

amp

SOUND CONTROL

SW+VOL+EQ

(TDA7468 )

AUX/MP3-LIN

Karaoke(CD3699)

High power

AMP

TDA8920

Mid power amp

TDA8920

WIRING DIAGRAM

4-1 4-1

USB SOCKET BOARD

J907

J904

J906

VFD PCB BOARD

J915 J903

J901

CW104

CW102

MCU PCB BOARD

CW105

CW101CW103

JCN303

CN612

CN601

CN604

MAIN PCB BOARD

CN607

CN611CN903

CN603

CN602

AMP PCB BOARD

CON302

CON301

CON521

CN504

CON589

CD PCB BOARD

CN551

3CDC MOTOR BOARD

CN501

CN505

CLOSE/OPEN MOTOR

5-1 5-1

DISMANTLING INSTRUCTIONS

Disman tling of the CDC Modu le and Front Panel

1)Loos en 17 screws to remov e the Cover Top of the set.

4)Loos en 2 screws A and 2 screw s B to remove the CDC Modu le as indicated.

5)Remo ve 2 screws at the bott om to separate the Front Panel Assembly from t he Plate Bottom.

2)Slid e out the CDC Tray as shown in the diagram b elow with the help of a flat head scre w driver.

Front View CDC

Sliding Out The CDC Tray

Remove CDC Module

3)Remo ve the Cover Tray CDC a s indicated .

Remove Cover Tray CDC

5-2 5-2

DISMANTLING INSTRUCTIONS

Dismantling of Rear Portion

1)Remove 3 screws C as indicated to loosen the Tuner Board.

2)Remove 6 screws D&G as indicated to loosen the MAIN Board.

3)Remove 8 screws E&H as indicated the AMP Board.

4)Remove 3 screws F as indicated to loosen the Bottom Cabinet.

Dismantling of the PCB Board

1)Remove 14 screws I as indicated to loosen the KEY1 Board.

2)Remove 11 screws J as indicated to loosen the KEY2 Board.

3)Remove 3 screws K as indicated the USB SOCKET&LINE IN Board.

+ 21 hidden pages