Version 1.0

FWM998

3141 785 35430

Mini Hi-Fi System-/55/BK

Published by LX 1030 Service Audio Subject to modification

© Copyright 2010 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.

CONTENTS

Technical specification ..................................................................1-2Version variation ...........................................................................1-2 Service measurement setup..........................................................1-3 Service aids .................................................................................1-4 Instructions on CD playability ................................................2-1..2-2

Block diagram ................................................................................3-1Wiring diagram ..............................................................................4-1 Disassembly diagram............ ................................................5-1..5-2

Main board Circuit diagram .........................................................................6-1 Layout diagram ..................................................................6-2..6-3

Display board Circuit diagram ..................................................................7-1..7-2 Layout diagram ..................................................................7-3..7-4

USB/SD board Circuit diagram .........................................................................8-1 Layout diagram .........................................................................8-2

AMP Board Circuit diagram. .................................................................9-1..9-2 Layout diagram ..................................................................9-3..9-4

CD board Circuit diagram .......................................................................10-1 Layout diagram ..............................................................10-2..10-3

MCU Board Circuit diagram. ......................................................................11-1 Layout diagram ..............................................................11-2..11-3

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

Sound• Output Power: 14000W PMPO• Total Sound Power (RMS): 1300 W• Sound Enhancement: MAX Sound, Dynamic Bass

Boost 3 steps, Incredible Surround, Digital SoundControl 4 modes, Virtual Ambience Control

Loudspeakers• Main Speaker: Bass Reflex Speaker System, 2 way,

2" tweeter• Subwoofer type: Passive• Subwoofer driver: 10" woofer• Number of Loudspeakers: 6

Audio Playback• Loader Type: 3 CD Carousel• Number of Discs: 3• Playback Media: CD, CD-R, CD-RW, MP3-CD,

WMA-CD, SD Card, USB flash drive• Disc Playback Modes: 40-Track Programmable,

Repeat/one/disk/program, Shuffle Play• USB Direct / SD Modes: Fast Backward/Fast

Forward, Play/Pause, Previous/Next, Repeat,Shuffle

Audio Recording• Recording Media: USB device, SD/MMC card• USB recording sources: CD, Tuner, Aux,

Microphone in, SD Card• SD card recording sources: Aux, CD, Microphone

in, Tuner, USB device• USB / SD card recording modes: Delete, Instant

record, Progammed tracks, Schedule radioprogram, Single disc, Single track

Tuner/Reception/Transmission• Auto digital tuning• Station presets: 40• Tuner Bands: FM, MW• Tuner Enhancements: Auto Store, Easy Set (Plug &

Play)

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

line in -MP3 link• USB: USB host• Microphone: Dual Microphone sockets• Other connections: FM Antenna, MW Antenna

Convenience• Alarms: CD Alarm, Radio Alarm, USB alarm, Sleep

timer• Clock: On main display• Display Type: FTD• Karaoke: MIC volume, Echo control

Accessories• Remote control: 36-key with 2xAAA batteries• User Manual: Spanish, B-Portuguese• Guarantee booklet: Global version• Included accessories: FM/MW Antenna, Batteries

for remote control, *Flat pin adaptor• Quick start guide: Spanish, B-Portuguese• Cables: MP3 Line in cable

Dimensions• Set dimensions (W x H x D): 265 x 359 x 353 mm• Main speaker dimensions (W x H x D):

263 x 447 x 360 mm• Subwoofer dimensions (W x H x D):

337 x 491 x 360 mm• Surround Speaker dimensions (W x H x D):

208 x 359 x 301 mm• Weight incl. Packaging: 51.57 kg• Packaging dimensions (W x H x D):

1085 x 562 x 786 mm

Power• Power supply: 100-240VAC, 50/60Hz•

TECHNICAL SPECIFICATION

1 - 2

Type /Versions:

Features

Board in used:

FWM998

Service policy

MAIN BOARD

* TIPS : C -- Component Lever Repair.M -- Module Lever Repair

-- Used

/55 /00 89/39/KB/

Feature diffrenceRDSVOLTAGE SELECTORECO STANDBY - DARK

Type /Versions: FWM998

/55 /00 /77 89/39/KB/

VERSION VARIATION

AMP BOARD

49/

C/MC/M

C/MC/MC/M

CC/M

C/M

C/MC/MC/MC/M

49/

DISPLAY BOARDCD BOARDMCU BOARD

USB BOARD

SD BOARD C/M C/M

1-3

LF Generator e.g. PM5110

RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069

LEVEL METERe.g. Sennheiser UPM550

with FF-filter

S/N and distortion metee.g. Sound Technology ST170

L

R

DUT

or Universal Test Cassette Fe SBC420 4822 397 30071

LEVEL METERe.g. Sennheiser UPM550

with FF-filter

S/N and distortion metere.g. Sound Technology ST1700B

L

R

DUT

CDUse Audio Signal Disc(replaces test disc 3)

SBC429 4822 397 30184

Bandpass250Hz-15kHz

e.g. 7122 707 48001LF Voltmeter

e.g. PM2534DUT

S/N and distortion meter e.g. Sound Technology ST1700B

Frame aeriale.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

Bandpass250Hz-15kHz

e.g. 7122 707 48001LF Voltmeter

e.g. PM2534DUT

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 WARNINGAll ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.

ESD

CLASS 1LASER PRODUCT

GBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbol ! .

Lead free

Set remains closed!

N

Y

Play a CD for at least 10 minutes

Y

playabilityok ?

Nplayabilityok ?

add Info for customer"SET OK"

check playability

N

Y

playabilityok ?

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 4 is recommended

INSTRUCTIONS ON CD PLAYABILITY

2 - 1

Exchange CDM

1 - 4 For description - see following pages

1PLAYABILITY CHECK

For sets which are compatible with CD-RW discsuse 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 disturbanceplaying 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 01:15TR 19 (Fingerprint)TR 10 (1000μ wedge)

• playback of all these tracks without audible disturbanceplaying time for: 1000μ wedge 10seconds

Fingerprint 10secondsBlack dot from 01:05 to 01:25

• jump forward/backward (search) within a reasonable time

2CUSTOMER INFORMATION

It is proposed to add an addendum sheet to the set whichinforms the customer that the set has been checkedcarefully - but no fault was found.The problem was obviously caused by a scratched, dirty orcopy-protected CD. In case problems remain, the customeris requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in theaddendum sheet.

The final wording in national language as well as the printingis under responsibility of the Regional Service Organizations.

4LIQUID LENS CLEANING

Because the material of the lens is synthetic and coatedwith a special anti-reflectivity layer, cleaning must be donewith a non-aggressive cleaning fluid. It is advised to use“Cleaning Solvent

The actuator is a very precise mechanical component andmay not be damaged in order to guarantee its full function.Clean the lens gently (don’t press too hard) with a soft andclean cotton bud moistened with the special lens cleaner.

The direction of cleaning must be in the way as indicated inthe picture below.

Before touching the lens it is advised to clean thesurface of the lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.

INSTRUCTIONS ON CD PLAYABILITY

2 - 2

BLOCK DIAGRAM3-1 3-1

CD SERVO BU9543

MLC3895 144pin QFP

INPUT

RC5/RC6 CODE

VFDPT6315&

KEY PART

INPUT

SENSOR

16M SDRAM

8M SERIAL FALSH

SST29VF080B

PICK UP

MOTOR

ADC WM8782

3CDCDRIVER ICTDA7073A

MUX74LVC157

AUX

TUENRPACK

MICROPHONE

USB/SD

MOTOR DRIVER BA5826

IIC

MU

L-L/

R

IIC

PCMBCK,LRCK

,DATEPCM

CD

L/R

TUNER L/R

CONTROL DATA

CD PCM BCK,LRCK,

DATE

FUNCTION IC TDA7468D

3CD LOADER

RL

RR

TDA8954MAIN L/R

TDA8954

FR

SUB/LTDA8954

SUB/R

FL

2*250W

2*150W

2*250W

KEY CONTROL BOARD

SOUND KEY CONTROL BOARD

VOLUME CONTROL BOARD

VFD BOARD

MCU BOARD

CD BOARD

AMP BOARD

MAIN BOARDCLOSE/OPEN-MOTOR BOARDMOTOR BOARD

PO

WE

R S

UP

PLY

PO

WE

R C

ON

NE

CT

WIRING DIAGRAM4-1 4-1

CIRCUIT DIAGRAM - MAIN BOARD6-1 6-1

PCB LAYOUT - MAIN BOARDTOP SIDE

6-2 6-2

PCB LAYOUT - MAIN BOARDBOTTOM SIDE

6-3 6-3

CIRCUIT DIAGRAM - DISPLAY BOARDPART1

7-1 7-1

CIRCUIT DIAGRAM - DISPLAY BOARDPART2

7-2 7-2

PCB LAYOUT - DISPLAY BOARDTOP SIDE

7-3 7-3

PCB LAYOUT - DISPLAY BOARDBOTTOM SIDE

7-4 7-4

CIRCUIT DIAGRAM - USB/SD BOARD8-1 8-1

PCB LAYOUT - USB BOARD

PCB LAYOUT - SD BOARD

8-2 8-2

CIRCUIT DIAGRAM - AMP BOARD9-1 9-1

L-S

UB

FR

ON

T-R

250W

150W

150W

250W

30HZand 120HZ -3DB

R-S

UB

250W

FR

ON

T-R

250W

Noise

NoiseNoise

Noise

Frequency Response

Noise

470UF/50V

3300UF/50V

3300UF/50V

470UF/50V

470UF/50V 470UF/50V

470UF/50V

470UF/50V

8K2

18K

224

12K

224

153

56K

224

0.47UF/16V8K2

18K

224

12K

224

6K8153

56K

4 OHM

220N

220N

47UF/100V

47UF/100V

3 OHM

TDA8954TH

220N

220N

47UF/100V

TDA8954TH

330P

220N220N

1.5k

1K

5V6 SMD

1531K5 1536K8

1K5

4 OHM

8K2

6K8

0E

0E

0E

FB1K8

6K8

8K2

3 OHM

330P

PCB LAYOUT - AMP BOARDTOP SIDE

9-2 9-2

PCB LAYOUT - AMP BOARDBOTTOM SIDE

9-3 9-3

CIRCUIT DIAGRAM-CD BOARD10-110-1

LAYOUT DIAGRAM-CD BOARDTOP SIDE

10-2 10-2

LAYOUT DIAGRAM-CD BOARDBOTTOM SIDE

10-3 10-3

CIRCUIT DIAGRAM - MCU BOARD11-1 11-1

PCB LAYOUT - MCU BOARDTOP SIDE

11-2 11-2

PCB LAYOUT - MCU BOARDBOTTOM SIDE

11-3 11-3

EXPLODED VIEW12-1 12-1