Philips FWC270-21 Diagram

Service

Service

Mini System

Service
Service

Service

FWC270/21

Service Manual

TABLE OF CONTENTS

Location of PCBs & Version Variations ......................1-2

Technical Specifications .............................................1-3

Measurement setup....................................................1-4

Service Aids, Safety Instruction, etc...........................1-5

Preparations & Controls .............................................1-7

Disassembly Instructions & Service positions ..............2

Service Test Programs & DEMO mode .........................3

Set Block diagram ......................................................... 4

Set Wiring diagram ........................................................ 5

Front Board.................................................................... 6

Mains Board................................................................... 8

ECO-MTF Module..........................................................9

3CDC-LC-MB Module.................................................. 10

Combi Board................................................................ 11

Set Mechanical Exploded View & Parts List ...............12

COMPACT

DIGITAL AUDIO

Page

©

Copyright 2002 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 0345 Service Audio Printed in The Netherlands Subject to modification

Version 1.0

CLASS 1

LASER PRODUCT

GB

3140 785 32780

LOCATION OF PCBS

F

R

B

O

O

N

T

A

R

D

MTF
BOARD

S

IN

MA

AR

BO

(/21/22

D

O

nly)

CD BOARD

FO

TRA
SEC.

ARD

O

B

FO

TRA

I.

PR

BOARD

1-2

VERSION VARIATIONS:

Type /Versions: FWC270

Features &

/21

Board in used:
Karaoke 

News
RDS
Incredible Surround
Rotary Encoder (volume control) x 
Jog Shuttle x 
Voltage Selector x
Aux Input x 
Digital Output
Headphone Socket x 
Line Output
Subwoofer Output
Surround Output
Matrix Surround Loudspeakers
Standby - FTD Clock Display x 
ECO Standby - Dark
Combi - Non-Cenelec Tuner x 
Combi - Cenelec Tuner

CO

MBI B

O

ARD

SPECIFICATIONS

{

}

GENERAL:

Mains voltage : 110-127V/220-240V

Switchable

Mains frequency : 50/60Hz
Power consumption : < 70W Active

< 20W at Standby
Clock accuracy : < 4 seconds per day
Dimension centre unit : 265 x 310 x 365mm

TUNER:
FM

Tuning range : 87.5-108MHz
Grid
IF frequency : 10.7MHz ± 20kHz
Aerial input : 75Ω coaxial
Sensitivity at 26dB S/N : < 7µV
Selectivity at 600kHz bandwidth : > 25dB
IF rejection : > 60dB
Image rejection : > 25dB
Distortion at RF=1mV, dev. 75kHz : < 3%

-3dB Limiting point : < 8µV
Crosstalk at RF=1mV, dev. 40kHz : > 18dB

100kHz

:

1-3

CASSETTE RECORDER:

Number of track : 2 x 2 stereo
Tape speed : 4.76 cm/sec +2.5/-1.5%
Wow and flutter : < 0.35% DIN
Fast-wind/rewind time C60 : 130 sec
Bias system : 75kHz ± 5kHz
Rec/Pb frequency response 

: 80Hz - 12.5kHz

within 8dB
Signal to noise ratio Type I : > 48dBA

COMPACT DISC:

Measurement done at output conn. of the CDC module.
Frequency response within ± 1.5dB: 20Hz - 20kHz
Output level (in Vrms) :550mV ± 2dB, R

out

Signal/Noise ratio (A-weighted) : > 80dBA
Distortion at 1kHz : < 0.003%
Channel unbalance at 1kHz : ±1dB
Channel separation at 1kHz : > 60dB
De-emphasis : 0 or 15/50 mS (Switched

by subcode

on the disc)

= 100Ω

MW

Tuning range : 531-1602kHz or



530-1700kHz  
Grid :

9kHz or 10kHz
IF frequency : 450kHz ± 1kHz
Aerial input : Frame aerial
Sensitivity at 26dB S/N : < 4.4mV/M
Selectivity at 18kHz bandwidth : > 18dB
IF rejection : > 45dB
Image rejection : > 28dB
Distortion at RF=50mV, m=80% : < 5%

AMPLIFIER:

Output power : 2 x 40W

1)

RMS
Frequency response within -3dB : 50Hz-15kHz
Dynamic Bass Boost : DBB ON, DBB 1, DBB 2,



DBB 3

2)

Digital Sound Control : Jazz, Techno, Optimal, 

2)



Rock
Headphone output at 32Ω:15mW ± 2dB
Input sensitivity, R

= 600Ω

S

Aux / CDR : 500mV / 1.0V

Mic :

3.5mV

1)

6

Ω,

 1kHz, 10% THD

2)

Frequency response in each setting is software controlled.

MEASUREMENT SETUP

Tuner FM

1-4

Bandpass

LF Voltmeter

e.g. PM2534

RF Generator

e.g. PM5326

DUT

250Hz-15kHz

e.g. 7122 707 48001

Ri=50Ω

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=50Ω

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).

CD

Use Audio Signal Disc
(replaces test disc 3)

DUT

L

R

SBC429 4822 397 30184

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

Recorder

Use Universal Test Cassette CrO2 SBC419 4822 397 30069

or Universal Test Cassette Fe SBC420 4822 397 30071

LF Generator

e.g. PM5110

DUT

L

R

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

SERVICE AIDS

1-5

Service Tools:

Universal Torx driver holder .................................. 4822 395 91019

Torx bit T10 150mm ............................................. 4822 395 50456

Torx driver set T6 - T20......................................... 4822 395 50145

Torx driver T10 extended ...................................... 4822 395 50423

Cassette:

SBC419 Test cassette CrO2................................. 4822 397 30069

SBC420 Test cassette Fe ..................................... 4822 397 30071

MTT150 Dolby level 200nWb/M............................ 4822 397 30271

Compact Disc:

SBC426/426A Test disc 5 + 5A ............................ 4822 397 30096

SBC442 Audio Burn-in Test disc 1kHz ................. 4822 397 30155

SBC429 Audio Signals disc .................................. 4822 397 30184

Dolby Pro-logic Test Disc...................................... 4822 395 10216

HANDLING CHIP COMPONENTS

ESD Equipment:
Anti-static table mat - large 1200x650x1.25mm ... 4822 466 10953

Anti-static table mat - small 600x650x1.25mm..... 4822 466 10958

Anti-static wristband .............................................. 4822 395 10223

Connector box (1MΩ)............................................ 4822 320 11307

Extension cable

(to connect wristband to conn. box).................. 4822 320 11305

Connecting cable

(to connect table mat to conn. box) .................. 4822 320 11306

Earth cable (to connect product to mat or box) .... 4822 320 11308

Complete kit ESD3

(combining all above products)......................... 4822 320 10671

Wristband tester .................................................... 4822 344 13999

WARNING

GB

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.

F

ATTENTION

Tous les IC et beaucoup d’autres
semi-conducteurs sont sensibles aux
décharges statiques (ESD).
Leur longévité pourrait être considérablement
écourtée par le fait qu’aucune précaution n’est
prise à leur manipulation.
Lors de réparations, s’assurer de bien être relié
au même potentiel que la masse de l’appareil et
enfiler le bracelet serti d’une résistance de
sécurité.
Veiller à ce que les composants ainsi que les
outils que l’on utilise soient également à ce
potentiel.

1-6

ESD

D

WARNUNG

Alle ICs und viele andere Halbleiter sind
empfindlich gegenüber elektrostatischen
Entladungen (ESD).
Unsorgfältige Behandlung im Reparaturfall kan
die Lebensdauer drastisch reduzieren.
Veranlassen Sie, dass Sie im Reparaturfall über
ein Pulsarmband mit Widerstand verbunden
sind mit dem gleichen Potential wie die Masse
des Gerätes.
Bauteile und Hilfsmittel auch auf dieses gleiche
Potential halten.

WAARSCHUWING

NL

Alle IC’s en vele andere halfgeleiders zijn
gevoelig voor electrostatische ontladingen
(ESD).
Onzorgvuldig behandelen tijdens reparatie kan
de levensduur drastisch doen verminderen.
Zorg ervoor dat u tijdens reparatie via een
polsband met weerstand verbonden bent met
hetzelfde potentiaal als de massa van het
apparaat.
Houd componenten en hulpmiddelen ook op
ditzelfde potentiaal.

I

AVVERTIMENTO

Tutti IC e parecchi semi-conduttori sono
sensibili alle scariche statiche (ESD).
La loro longevità potrebbe essere fortemente
ridatta in caso di non osservazione della più
grande cauzione alla loro manipolazione.
Durante le riparazioni occorre quindi essere
collegato allo stesso potenziale che quello della
massa dell’apparecchio tramite un braccialetto
a resistenza.
Assicurarsi che i componenti e anche gli utensili
con quali si lavora siano anche a questo
potenziale.

GB

Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified,
be used.

NL

Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in
zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen,
identiek aan de gespecificeerde, worden toegepast.

F

Les normes de sécurité exigent que l’appareil soit remis à l’état
d’origine et que soient utiliséés les piéces de rechange identiques
à celles spécifiées.

D

Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu
beachten. Der Original zustand des Geräts darf nicht verändert werden;
für Reparaturen sind Original-Ersatzteile zu verwenden.

“Pour votre sécurité, ces documents
doivent être utilisés par des spécia­listes agréés, seuls habilités à réparer
votre appareil en panne”.

CLASS 1

LASER PRODUCT

GB

Invisible laser radiation when open.
Avoid direct exposure to beam.

Osynlig laserstrålning när apparaten är öppnad och spärren
är urkopplad. Betrakta ej strålen.

Warning !

S

Varning !

3122 110 03420

I

Le norme di sicurezza esigono che l’apparecchio venga rimesso
nelle condizioni originali e che siano utilizzati i pezzi di ricambio
identici a quelli specificati.

"After servicing and before returning set to customer perform a
leakage current measurement test from all exposed metal parts to
earth ground to assure no shock hazard exist. The leakage current
must not exceed 0.5mA."

Varoitus !

SF

Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen!

DK Advarse !

Usynlig laserstråling ved åbning når sikkerhedsafbrydere er
ude af funktion. Undgå udsaettelse for stråling.

PREP ARATIONS AND CONTROLS

Preparations

Rear connections

The type plate is located at the rear of the

system.

A

Power

Before connecting the AC pow er cord to the

wall outlet, ensure that the following are done;

– If your system is equipped with a Voltage

Selector, set the VOLTAGE SELECTOR to the

local power line voltage.

–All other connections have been made.

WARNING!

–For optimal performance, use only the

original power cable.

–Never make or change any connections

with the power switched on.

To avoid overheating of the system, a safety

circuit has been built in. Therefore, your

system may switch to Standby mode

automatically under extreme conditions. If

this happens, let the system cool down

before reusing it (not available for all versions).

B

Antennas Connection

Connect the supplied AM loop antenna and FM

antenna to the respective terminals. Adjust the

position of the antenna for optimal reception.

AM Antenna

Position the antenna as far as possible from a TV,

VCR or other radiation source.

SPEAKERS 6

R

+

—

L

—

+

SUBWOOFER

OUT

AM

ANTENNA

FM

ANTENNA

LR

speaker

(right)

speaker

(left)

FM wire antenna

AM loop 

antenna

B

C

AUX/CDR

A

AC power cord

VOLTAGE

SELECTOR

110V-

127V

220V-

240V

VOLTAGE

SELECTOR

220V-

240V

110V-

127V

Preparations

FM Antenna

For better FM stereo reception, connect an

outdoor FM antenna to the FM ANTENNA

terminal.

C

Speakers Connection

Connect the speaker wires to the SPEAKERS

terminals, right speaker to "R" and left speaker to

"L", coloured (marked) wire to "+" and black

(unmarked) wire to "-".

1

2

Fully insert the stripped portion of the speaker

wire into the terminal as shown.

Notes:

–For optimal sound performance, use the

supplied speakers.

–Do not connect more than one speaker to any

one pair of

+

/

-

speaker terminals.

–Do not connect speakers with an impedance

lower than the speakers supplied. Please refer to

the SPECIFICATIONS section of this manual.

Optional connection

The optional equipment and connecting cords

are not supplied. Refer to the operating

instructions of the connected equipment for

details.

Connecting other equipment to your

system

Use a cinch cable to connect AUX/CDR IN to

the analogue audio out terminals of an external

equipment (TV, VCR, Laser Disc player, DVD

player or CD Recorder).

Note:

–If you are connecting equipment with a mono

output (a single audio out terminal), connect it to

the AUX/CDR IN left terminal. Alternatively, you

can use a “single to double” cinch cable (the output

sound still remain mono).

Inserting batteries into the

remote control

Insert two batteries type R03 or AAA (not

supplied) into the remote control with the

correct polarity as indicated by the "+" and

"-" symbols inside the battery compar tment.

CAUTION!

– Remove batteries if they are exhausted

or will not be used for a long time.

–Do not use old and new or different

types of batteries in combination.

– Batteries contain chemical substances, so

they should be disposed off properly.

1-7

PREP ARATIONS AND CONTROLS

1

2

3

4

5

6

7

8

9

0

!

@

#

$

%

&

*

(

)

^

STANDBY-ON

SLEEP

DIGITAL SOUND DISPLAY

BAND

TAPE 1 • 2

VIDEO

TUNER TAPE AUX

MASTER

VOLUME

STOP•CLEAR / DEMO STOP

SEARCH•TUNING

SEARCH•TUNING

PLAY• PAUSE

PRESETNEXT/

PRESET

PREV/

PROGRAM

CLOCK/

TIMER

DIM MODE

24

5

DSC DBB MUTE

2

CD 1/2/3

REPEAT SHUFFLE SLEEP

TUNER TAPE 1/2 AUX/CDR

MUTE

NEWS/TA

á

á

ë

í

Å

É

Ç

VOL

¡

™

^

8

*

2

0

£

4

Controls

Controls on the system and

remote control

1

STANDBY ON B

–to switch the system on or to standby mode.

2

SLEEP

–to activate/deactivate or set the sleep timer.

3

DIGITAL SOUND DISPLAY

– the active DSC will be lighted.

4

TUNER (BAND)

–to select waveband : FM or MW.

TAPE (TAPE 1•2)

–to select tape mode.

AUX (VIDEO) (AUX/CDR)

–to select the input for an additional appliance.

5

CD 1 / CD 2 / CD 3 (CD 1/2/3)

–to select disc tray 1, 2 or 3.

6

OPEN/CLOSE

–to open or close the disc tray.

7

DISC CHANGE

–to change disc(s).

8

DIGITAL SOUND CONTROL (DSC)

–to activate the jog control for DSC selection.

9

Jog control

–to select the desired sound effect for the

selected sound feature.

DSC ..................JAZZ, ROCK, TECHNO or

OPTIMAL.

DBB .................. DBB 1, DBB 2, DBB 3 or DBB

OFF.

0

DYNAMIC BASS BOOST (DBB)

–to activate the jog control for DBB selection.

!

PROGRAM

for CD .................to programme disc tracks.

for Tuner ............. to programme preset radio

stations.

for Clock ............ to select 12- or 24-hour clock

mode.

for Timer ............. to select CD programme mode

as the wake up source.

@

Ta pe deck 1 operation

â .......................... to star t recording.

É .......................... to star t playback.

à / á ............... to rewind or fast forward.

70 ........................ to stop playback/recording or to

open the tape door.

Å .......................... to interr upt playback or

recording.

#

Ta pe deck 2 operation

É .......................... to star t playback.

à / á ............... to rewind or fast forward.

70 ........................ to stop playback or to open the

tape door.

Å .......................... to interr upt playback.

$

CLOCK/TIMER

–to view the clock, set the clock or set the timer.

%

DIM MODE

–to select different brightness for the display

screen : DIM 1, DIM 2, DIM 3 or DIM OFF.

1-8

PREP ARATIONS AND CONTROLS

Controls

^

Mode Selection

PLAY•PAUSE ÉÅ

for CD ................. to start or interrupt playback.

for Plug & Play…(on the system only) to initiate

and start plug & play mode.

SEARCH•TUNING àá

for CD ................. to search backward/forward.

for Tuner ............. to tune to a lower or higher

radio frequency.

for Clock ............ (on the system only) to set the

hour.

STOP•CLEAR / DEMO STOP Ç

for CD ................. to stop playback or to clear a

programme.

for Tuner ............. (on the system only) to stop

programming or to erase a

selected preset.

for Demo ........... (on the system only) to activate/

deactivate the demonstration.

for Clock ............ (on the system only) to exit clock

setting or cancel timer.

for Plug & Play…(on the system only) to exit plug

& play mode.

PREV í / PRESET 4

NEXT ë / PRESET3

for CD ................. to skip to the beginning of the

current, previous, or next track.

for Tuner ............. to select a preset radio station.

for Clock ............ (on the system only) to set the

minute.

&

n

–to connect headphones.

*

MASTER VOLUME (VOL +/-)

–to increase or decrease the volume.

(

Display screen

–to view the current status of the system.

)

Disc tray

¡

REPEAT

–to playback track(s)/disc(s)/programme

repeatedly.

™

SHUFFLE

–to playback all available discs and their tracks/

programme in random order.

£

MUTE

–to interrupt or resume sound reproduction.

B

–to switch the system to standby mode.

Notes for remote control:

– First, select the source you wish to

control by pressing one of the source select

keys on the remote control (CD 1/2/3 or

TUNER, for example).

– Then select the desired function (

É

,

í

,

ë

, for example).

1-9

MAINTENANCE AND TROUBLESHOOTING

Troubleshooting

WARNING

Under no circumstances should you try to repair the system yourself, as this will invalidate the

warranty. Do not open the system as there is a risk of electric shock.

If a fault occurs, first check the points listed below before taking the system for repair. If you

are unable to solve a problem by following these hints, consult your dealer or service centre.

Problem Solution

CD OPERATION

“NO DISC” is displayed. –Insert a disc.

–Check if the disc is inserted upside down.

–Wait until the moisture condensation at the lens

has cleared.

–Replace or clean the disc, see “Maintenance”.

“DISC NOT FINALIZED” is displayed. –Use a finalised CD-RW or CD-R.

Maintenance

Cleaning the Cabinet

Use a soft cloth slightly moistened with a mild

detergent solution. Do not use a solution

containing alcohol, spirits, ammonia or abrasives.

Cleaning Discs

When a disc becomes dirty,

clean it with a cleaning cloth.

Wipe the disc from the centre

out. Do not wipe in circular

motion.

Do not use solvents such as

benzene, thinner, commercially available cleaners,

or antistatic spray intended for analogue records.

Cleaning the disc lens

After prolonged use, dir t or dust may

accumulate at the disc lens. To ensure good

playback quality, clean the disc lens with Philips

CD Lens Cleaner or any commercially available

cleaner. Follow the instructions supplied with

cleaner.

Cleaning the Heads and the Ta pe Paths

To ensure good recording and playback quality,

clean the heads

A

and

B

, the capstan(s)

C

,

and pressure roller(s)

D

after every 50 hours

of tape operation.

Use a cotton swab slightly moistened with

cleaning fluid or alcohol.

Yo u also can clean the heads by playing a

cleaning tape once.

Demagnetising the heads

Use a demagnetising tape available at your

dealer.

Tr oubleshooting

RADIO RECEPTION

Radio reception is poor. – If the signal is too weak, adjust the antenna or

connect an external antenna for better reception.

– Increase the distance between the Mini HiFi

System and your TV or VCR.

TAPE OPERATION/RECORDING

Recording or playback cannot be made. –Clean deck par ts, see “Maintenance”.

–Use only NORMAL (IEC I) tape.

–Apply a piece of adhesive tape over the missing

tab space.

GENERAL

The system does not react when buttons –Remove and reconnect the AC power plug and

are pressed. switch on the system again.

Sound cannot be heard or is of poor –Adjust the volume.

quality. –Disconnect the headphones.

–Check that the speakers are connected correctly.

– Check if the stripped speaker wire is clamped.

The left and right sound outputs are –Check the speaker connections and location.

reversed.

The remote control does not function –Select the source (CD 1/2/3 or TUNER, for

properly. example) before pressing the function button

(É,í,ë).

– Reduce the distance between the remote control

and the system.

–Insert the batteries with their polarities

(+/– signs) aligned as indicated.

–Replace the batteries.

–Point the remote control directly towards the IR

sensor .

The timer is not working. –Set the clock correctly.

– Press and hold CLOCK/TIMER to switch on the

timer.

– If recording or tape dubbing is in progress, stop

recording.

The Clock/Timer setting is erased. –Power has been interrupted or the power cord

has been disconnected. Reset the clock/timer.

The system displays features – Press and hold Çon the system to switch off

automatically. the demonstration.

1-10

DISMANTLING INSTRUCTIONS

2-1 2-1

Dismantling the 3CDC Module

1) Loosen the 4 screws, slide Cover top (pos 253) towards

the rear and remove it upwards.

2) Loosen 3 screws slide the Panel right (pos 252) towards

the rear and remove it outwards. Do likewise for the Panel
left (pos 251).

3) Push the gear slowly towards the front as shown in figure

2 until the CDC tray starts to move out of the Front Cabinet
(pos 101). The CDC tray is now disengage and can be
pulled out completely.

4) Remove the Cover Tray (pos 105) as shown in figure 2.

5) Loosen 4 screws A to remove the CDC Module (pos 1 104)
as shown in figure 2.

A

A

A

Turn the Gear towards the Front
till the CDC Tray starts to open

Dismantling of the Front Panel assembly

1) Loosen 2 screws below the Front Panel (pos 101) mounting
it to the Bottom plate (pos 227).

2) Release the 2 catches on the sides of the Front Panel to
separate it from the Bottom plate.

3) Remove the Volume and Jog Rotary knob if the Front
board needs to be dismantled. For Karaoke versions, the
Karaoke knob (pos 133) also need to be removed.

4) Loosen 8 screws B to remove the Front board as shown in
Figure 5.

5) Loosen 6 screws C and eject both cassette doors to
remove the T ape mechanism (pos 1103) as shown in figure

6.

Note: The Cassette door can be removed only after

the removal of the Tape mechanism and buttons.

Figure 1

Dismantling of the Volume & Jog Rotary knobs

1) Cut a piece of packaging tape approximately 5cm width by
12cm length and tape its narrow side on to the top and
bottom side of the Volume knob (pos 132) as shown in
figure 3.

Figure 2

Figure 5

2) Place a small screw driver in between the tape & knob (see
figure 3) to give more leverage in pulling out the knob as
shown in figure 4.

3) Do likewise for the Jog Rotary knob (pos 131). You may
have to rotate the knob to provide the most exposed area
during application of the packaging tape.

Figure 3

Figure 6

Figure 4

Dismantling of the Cassette door Lenses

1) Loosen the Lens Cassette Strip Left Top (pos 163) by
pushing it towards the inside as indicated in Figure 7 and
remove it by using a minus screw driver force it out as
indicated in Figure 8.

Push in this
direction

Push in this
direction

2-2

2) Remove the Lens Cassette Left (pos 161) by pushing it
towards the inside as indicated in Figure 7. Be careful not
to damage or break the catch A.

3) Do likewise for the right Cassette Door Lens (pos 160 and

162).

Use a minus screw
driver to push the Lens
in the direction shown

Catch A

2-2

Service pos A

Figure 7

Dismantling of the Bottom & Rear Panel assembly

1) Loosen 5 screws D mounting the Combi board to the Rear
Panel (pos 254) as shown in figure 9.

2) Loosen 3 screws E and release the 2 catches on the sides
of the Rear Panel to separate it from the Bottom plate (pos

227).

3) Loosen 4 screws G to remove the Mains Transformer.

5) Loosen 2 screws F to remove the Combi Board.

Figure 8

Service pos B

Note: After re-assembly, it is very important to ensure all

wires are routed properly to ensure that they do not
touch/obstruct all moving parts.

The 3CDC Module can be complete detached while
repair the other portion of the set.

Figure 9

Figure 10

3-1

3-1

SERVICE TEST PROGRAM

TUNER
TEST

TUNER

Button pressed?

Y

Display Tuner Version

"ccc"

N

copied to the RAM (see Table1)

N

PRESET

1
2
3
4
5
6
7
8

9
10
11

TUNER

Button pressed?

Y

Service frequencies are

Tuner works normally

except:

PROGRAM button

Disconnect

Mains cord ?

Y

Service Mode left

Europe

"EUR"

87.5MHz
108MHz

531kHz

1602kHz

558kHz

1494kHz

87.5MHz

87.5MHz

87.5MHz

87.5MHz
98MHz

Note: * Depending on the selected grid frequency (9 or 10kHz)

By holding the TUNER and R buttons depressed while switching on the Mains supply, one
of the undermentioned features will be activated:

- the tuning grid frequency is toggled between 9kHz and 10kHz for the Oversea (/21) version.

- the extended FM1 (65.81MHz - 74MHz) is toggled on and off for East Eur. (/34) version.

N

East Eur. Extended-band

"EAS"

65.81MHz
108MHz

74MHz

87.5MHz
531kHz

1602kHz

558kHz

1494kHz

98MHz

70.01MHz

65.81MHz

Table 1

To start service test program

plugging in the mains cord

Display shows the

QUARTZ
TEST

O

Button pressed?

Y

Display shows

32K

Output at (Front Board)

pin 80 of uP = 2048Hz

O

Button pressed?

Y

Display shows

8M

Output at (Front Board)

pin 80 of uP = 1,953.125Hz

9

Button pressed?

Y

Note: During the 3CDC tray may "jerks" open

& close or the carousel may rotates
slightly. This is due to sharing of control
lines during the Service test program.

East Eur.

"EAS"

87.5MHz
108MHz

531kHz

1602kHz

558kHz

1494kHz

87.5MHz

87.5MHz

87.5MHz

87.5MHz

98MHz

USA

"USA"

87.5MHz
108MHz

530kHz

1700kHz

560kHz

1500kHz

98MHz

87.5MHz

87.5MHz

87.5MHz

87.5MHz

N

N

N

Oversea

"OSE"

87.5MHz
108MHz

530/531kHz*

1700/1602kHz*

560/558kHz*

1500/1494kHz*

98/87.5MHz*

87.5MHz

87.5MHz

87.5MHz

87.5/98MHz*

hold P & TAPE
depressed while

ROM version *

"S-Vyy"

(Main menu)

S refers to Service Mode.
V refers to Version.
yy refers to Software version number of Processor.

(Counting up from 01 to 99)

SERVICE
PLAY MODE

STANDBY-ON

Button pressed?

Y

Set is in Service PLAY Mode.

In case of failures, error

codes according to table 2

will be displayed.

The Service Play Mode is intended to
detect and identify the failures in the CD Mode.

In this mode the electronics will still function
even when an error is detected so that
repair activities can be carried out.

Error code

E1000

Error Description
Focus Error

Triggered when the focus could not be found within a certain time when starting up the CD
or when the focus is lost for a certain time during play.

E1001

E1002

Radial Error
Triggered when the radial servo is off-track for a certain time during play.

Sledge In Error
The sledge did not reach its inner position (inner-switch is still close) before approximately
6 Sec. have passed by. Inner-switch or sledge motor problem.

E1003

Sledge Out Error
The sledge did not come out of its inner position (inner-switch is still open) before approximately
250 mSec. have passed by. Inner-switch or sledge motor problem.

E1005

Jump-offtrack error
Triggered in normal play when the jump destination could not be found within a certain time.
When this error occurred, software will try to recover by initiating the jump command again.
If it is recoverable, the disc will continue to play.

E1006

E1007

E1008

Subcode Error
Triggered when a new subcode was missing for a certain time during play.

PLL Error
The Phase Lock Loop could not lock within a certain time.

Turntable Motor Error
Generated when the CD could not reached 75% of speed during startup within a certain time.
Discmotor problem.

E1020

E1070

E1071

E1079

Focus Search Error
The focus point has not been found within a certain time.

This happens when the carousel switch is defective and closed all the time, or when the
carousel is blocked when it is located exactly at a disc position.

This happens when the carousel switch is defective and does not closed electrically, or when
the carousel is blocked in between two disc positions. The time-out is approximately 5 Sec.

The drawer could not open or enter the inside position and is opening again. This happen when
the drawer is blocked and cannot go fully inside or when the drawer switch is defective and does
not close.

N

note 1 : JAZZ & TECHNO are on while OPTIMAL is off, other LEDs status

are not important (applicable only for sets with LEDs)

Figure 1

note 2 : OPTIMAL is on while JAZZ & TECHNO are off, other LEDs status

are not important (applicable only for sets with LEDs)

Figure 2

Table 2

Mini 2002 FW-C1xx, C2xx, C3xx Dated: wk141

DISPLAY
TEST

DIM

Button pressed?

Y

Display shows Fig. 1

and selected LEDs on

(see note 1)

DIM

Button pressed?

Y

Display shows Fig. 2

and selected LEDs on

(see note 2)

9

Button pressed?

Y

TEST

Activated with

EEPROM TEST A test pattern will be sent to the EEPROM.

9 to Exit

ROTARY
ENCODER TEST

LEAVE SERVICE
TESTPROGRAM

Volume Knob

Jog Shuttle knob

Disconnect
mains cord

N

N

N

Various

other Tests

ACTION

R

QEEPROM FORMAT Load default data. Display shows "NEW"

or

DBBDEMO

"PASS" is displayed if the uProcessor read
back the test pattern correctly, otherwise
"FAIL" will be displayed.

for 1 second.

Caution!
All presets from the customer will be lost!!

Display shows value for 2 seconds.
Values increases or decreases in steps of 1
until 0 (Min.) or 40 (Max.) is reached.

DEMO will toggle on or off.
The message: "DEMO ON" or "DEMO OFF"
will scroll across the display to show the
new status of the set.

SET BLOCK DIAGRAM

+CD

VDC-3C

M

250mV

120mV

25mV

VIDEO OUT

-6dB Track

-CMOS

250nWb/m

1.0 Vpp

MPEG3

D

A

+CD

+12V_M

3CDC-L2C

DM

AUX / CDR

A

+12V_M +12V_A

ECO-MTF

AM

-6dB Track

# FOR VCD/MP3 VERSION

CDC

CONTROL

500mV / 1000mV

TAPE

CONTROL

+12V_M

D

CDC

CONTROL

ATTN.

-26 dB

ATTN.

-8.5dB

500mV

250mV

4-1

125mV

+12V_A

ECO6

A

SOFTWARE CONTROL

SOURCE SELECTOR

FM (67.5 kHz)

AM (80% MOD)

TUNER

CONTROL

100mV

14 dB

I2C

I2C DATA

I2C CLK

500mV
76dBA
16dB

INCREDIBLE
SURROUND
INTERFACE

500mV

SIMPLE

IS FILTER

SA BUFFER

+12V_A

A

VOL. 1

TREBLE

&

BASS

A

TDA7468

VOL. 2

D

MUTE

CD_ON

+9.1V

-33V

(FOR CDC-L2C ONLY)

+9.1V

LEFT/RIGHT

+5V6

MUTE

+12V_A

CD SUPPLY

CONTROL

500mV
76dBA
16dB

-CMOS (-9V)
REG

+9V

REG

HEADPHONE

AMPLIFIER

+12V_A

NJM4556AM

+12V_A

HP_OUT

-CMOS

+CD

2.50V
85dBA
3dB

(+5V)

1K

4-1

NOTE :

MEASUREMENTS ARE IN AUX MODE :

XX mV
YY dB\A
ZZ dB

# PROVISION FOR VCD/MP3 VERSION

1K

D

D

MAIN SIGNAL PATH

LEVELS AT MAX VOL
S/N AT 500mW\
HEADROOM (1% THD) WRT TO LEVEL AT MAX VOL

+Z

POWER

AMPLIFIER

AN17830A

+

-

+

-

COMBI

AMP_ON

1.90V
67dBA

3.0dB

ATTEN.

Rin = 3k

LEFT/RIGHT

+C

L/R SPEAKER

2 X 37W

2 X 6 OHMS

##

FOR MATRIX
SURROUND

0.9W/6 ohms

POWER

CONTROL

RDS
DECODER

CONTROL

HP_MUTE

CD_ON
AMP_ON

TUNER

CDC

CONTROL

TAPE

CONTROL

+5V6

NTC
PWDN
LPC

MUTE

+5V6_ECO

+LPS

ECO POWER

LED

+F

HP DET

SIMPLE KARAOKE

+5V6

4 X DSC LEDS

D

EEPROM

HP DET

MIC DET

D

uP

TMP87CS71F

KEY SCAN

MATRIX

MIC DET

+LPS

SWITCH

A

ECO/SLEEP

650mV
78dBA

3.2dB

POWER
SWITCH

SA IN

+12V_A

I2C DATA

JOG

CONTROL

## FEATURE PROVISION

3.5mV

+5V6

A

I2C CLK

+F

-33V

IR EYE

FTD

VOLUME
CONTROL

+F

F1x

F2x

+5V6

+5V6_ECO

+LPS

F1x
F2x

+F

F1

F2

+12A

+12M

-33V

F1

AMP_ON

+CD

(+5V)

-33V

REGULATOR

7812

# VCD

REGULATOR

L7805

(ETF7 ONLY)

PWDN

F2

+C

FUSE

FOR CLASS G SWITCH

+50V

CD_ON

POWER SUPPLY

+Z

# VCD

+Z

# VCD

FUSE

FUSE

+C

FUSE

NTC

FUSE

# VCD

# FOR VCD/MP3 VERSION

+5V6_ECO

TRAFO

FOR -/21 ONLY

VOLTAGE

SELECTOR

LPS

SMPS

MAINS

CHOKE

(NOT USED FOR -/37)

(ONLY FOR -/37)

+C

STBY TRANSFORMER
(NOT USED IN -/21 & -/37)

LPC

L

N

10M

FW-C255 Block diagram ...34280 dd wk148

33R

HEADPHONE

47R

A

HP_OUT

FRONT

SET WIRING DIAGRAM

5-1 5-1

NON-VCD

MIC_DET

+12V_A
MIC_SK
GND_A

PB INFO

ECO-MTF

REC INFO

1

1401

1401

2P

1706

2

ECO-MTF

TP_REC_LEFT
TP_REC_RIGHT
GND_A
TP_LEFT
+12V_A
TP_RIGHT

EH SIDE

220mm

EH SIDE

1710

1

FFC TOP

1721

1

MIC

1

FFC SIDE

# VCD

MIC_DET

+12V_A
MIC_SK
GND_A
MIC_VCD

MIC AMP

# 1801/1802

1601

ECO-MTF

(1103)

EH TOP

1500

# 5P/4P
FFC AD

140mm

1601

1P

180mm

HEATSINK WIRE

SOLDERED FROM 8201 or 8203

(UL GROUNDING WIRE - ONLY FOR -/37 VER.)

FROM ECO-MTF MODULE’S CHASSIS

(BOTTOM SCREW NEAR THE COMBI PCB)

NOTE :

# - PROVISION FOR SETS WITH VCD/MP3 FEATURE .
## - PROVISION FOR SETS WITH MATRIX SURROUND.
$$ - PROVISION FOR SETS WITH ECO FEATURE (ONLY FOR -/22 VER.) .

HEADPHONE

1700

6P

FFC AD
340mm

1701

2P

340mm

1560

1P

180mm

1211

1P

280mm

1106

1P

120mm

VCD

DSA_STR

$$ 1439

ECO

CD_PORE

1438

CD_PORE

NON-ECO

1

1508

1

1502

FFC TOP

1500

EH TOP

FFC TOP

1560

1568

STOKO PIN

1564

STOKO PIN

1102

FM COAX
(NOT USA) (USA)

DSA_ACK

CD_GND

CD_SILD

CD_GND

CD_SILD

ECO-MTF

TP_REC_LEFT

1

TP_REC_RIGHT
GND_A
TP_LEFT
+12V_A
TP_RIGHT

1

GND_M
+12V_M

#VCD

1

MIC_DET
+12V_A
MIC_SK
GND_A
MIC_VCD

1563

STOKO PIN

FM CLICK

DSA_DATA

CD_SHDATA

CD_SHDATA

# 1505

1101

SH_DATA

CD_SHCLK

CD_SICL

CD_SICL

CD_SHCLK

CD_SHSTR

CD_SWINFO

CD_SHSTR

CD_SWINFO

CD_ON

TU_GND

CD_ON

TU_GND

TU_DATA

TU_CLK

TU_ENABLE

TU_CLK

TU_ENABLE

TU_DATA

1400

TU_STEREO

TU_STEREO

COMBI

(1102)

1503

NON-VCD

MIC_DET
+12V_A
MIC_SK
GND_A

TUNER

ECO6 LAYOUT CELL

1103

AM ANT

1501

AUX IN

D_GND

SA_IN

D_GND

SA_IN

30P / $$ 32P

FFC AD

AMP_ON

HP_RIGHT

HP_GND

HP_LEFT

AMP_ON

HP_GND

HP_RIGHT

HP_LEFT

180mm

1307

LOUDSPEAKER

-33V

MUTEF2F1

F1

-33V

MUTE

F2

CDC-L2C

CD_LEFT 1
GND_A
CD_RIGHT
+5V_CD
GND_M
+12V_M
SW_INFO
SHR_STR
SH_CLK
SICL
SH_DATA
SILD
CD_GND
PORE
GND_D

MIC_VCD
GND_A
MIC_DET
+12V_A

## 1322/1323

MATRIX

SURROUND

FRONT

(1101)

D_GND

I2C_CLK

+5V6

I2C_DATA

PWDN

I2C_CLK

I2C_DATA

PWDN

D_GND

+5V6

1507

FFC TOP

MIC_VCD
GND_A
MIC_DET

F1
F2
AC_VKK
GND
NTC
AC_H
AC_H
AC_CT
AC_H
AC_H

PWDN
LPC
5V6_ECO

AC_VCD
AC_VCD

NTC

NTC

+5V6_ECO

LPC

# VIDEO

EH TOP

# 1506# 1509

1

1

DIPMATE

1

DIPMATE

# 88

1

DIPMATE

FFC SIDE

FFC TOP

1804

EH TOP

86

$$ 87

1805

FFC SIDE

1800

15P

180mm

FFC BD

# 1801

2P

220mm

1

# 1802

3P/4P

220mm

1

CVBS

1

# 1603

CDC-L2C

CD_LEFT
GND_A
CD_RIGHT
+5V_CD
GND_D
+12M
CD_SWINFO
CD_SHSTR
CD_SHCLK
CD_SICL
CD_SHDATA
CD_SILD
GND_D
PORE
GND_D

GND_D

EH SIDE

# 1705

EH TOP

# VCD GROUND ISOLATOR

1210

10P

280mm

1211

1

1210

10P

280mm

TO DIPMATE 88

TO STOKO PIN 1568

LPS-MAINS

VCD

CD_LEFT
GND_A
CD_RIGHT
+5V_CD
GND_D
+12M
CD_SWINFO
CD_SHSTR
CD_SHCLK
SH_DATA
DSA_DATA
DSA_ACK
GND_D
DSA_STR
GND_D

MIC_VCD
1

# 1602

# 1803

1

# 48

1

COMBI

(1102)

(1105)

CD CHANGER

(1104)

# MPEG01

MIC_DET

MPEG_GND

EH SIDE

3P

180mm

EH TOP

8201

TO STOKO PIN 1568

#1213

2P

280mm

COMBI

(1102)

1203

1

8203

EH TOP

EH TOP

(FOR -/30,-/33,-/34 & -/37 ONLY)

TRAFO

# 1204

PIN TYPE

1201
1202

MAINS SUPPLY

L

N

TRAFO

$$ 1209

# 1207

1

1

PIN TYPE

$$ LPS

TRAFO

MAINS SUPPLY

(FOR -/21 & -/22 ONLY)

1206
1208

L

N

FW-C255 Wiring diagram ... 34280 dd wk148

$$ 1203

3P

280mm

# 1204

2P

280mm

EH TOP

EH TOP

EH TOP

6-1

6-1

FTD DISPLAY PIN CONNECTIONS

FRONT BOARD

e

f

h

g

r

(2G - 9G)

1G

a

j

k

m

n

p

d

2G

b

Col 1

c

Dp

3G

11G

B5

B4

B3
B2
B1

4G

5G

6G

12G 11G

B10
B9
B8
B7
B6

7G

8G

B5
B4
B3

B2
B1

(12G)

B13
B12
B11

(11G)

9G

10G

B10
B9

B8

B7

B6

B5
B4
B3
B2
B1

TABLE OF CONTENTS

Variation Table and FTD Display pin connection ............ 6-1

Chip Layout...................................................................... 6-2

Component Layout .......................................................... 6-3

Circuit Diagram - Microprocessor part............................. 6-4

Circuit Diagram - Headphone / Miscellaneous part .. ....... 6-5

Electrical Parts List ......................................................... 6-7

Stroke Versions
Features / Item no. /21/21M/33 /30/37 Remarks
Simple Karaoke x ­Mic Detect x ­RDS - ­ECO Power LED - ­1800 x - Mic Socket
1802 - - Karaoke
3492 820R 820R NTC
3565 4R7 2R2 FTD Filament
3566 - 2R2 FTD Filament
3567 4R7 2R2 FTD Filament
3568 - 2R2 FTD Filament
4411 - - Karaoke
6429 - - Karaoke
9401 x - FTD Filament
9402 x - FTD Filament

12G

P1
P2
P3
P4
P5

B1
B2
B3
B4
B5

P6
P7
P8

P9
P10
P11

(1)

(2)

(3)

P12
P13
P14
P15
P16

FTD DISPLAY PIN NO.

FUNCTION

-

-

-

-

11G

B1
B2
B3
B4
B5
B6
B7
B8

B9
B10
B11
B12
B13

-

10G

(Left)

(Middle)

(Right)

(Up)

(Low)

-

3

3

8

9

-

F
2

12

2G

1G7G
a
h

j , p

k
b
f

m

g
c
e
r
n
d

-

-

-

1

9

8

7

6

P

P

P

P

13

14

15

16

2

5

4

3

F

-

P

-

­1

9G

a
h

j , p

k
b

f

m

g
c
e

r
n
d

-

-

-

3

3

3

5

6

7

1

-

­G

8G

a
h

j , p

k

b

f

m

g

c

e

r
n
d

-

-

-

3

3

3
4

2

G

G

3

3

2

3

0

1

4

3

6

5

G

G

G

a
h

j , p

k

b

f

m

g

c

e

r
n
d

Col

Dp

-

2

2

2

9

8

7

7

8

9

10

G

G

G

G

6G

a
h

j , p

k
b

f

m

g
c
e

r
n
d

-

-

-

2

2

2

2

2

2

5

3

6

4

11

-

12

G

G

5G

a
h

j , p

k
b

f

m

g
c
e

r
n
d

-

-

-

2

2

1

1

0

9

-

-

P

P

1

2

4G

a
h

j , p

k
b

f

m

g
c
e

r
n
d

-

-

-

1

1

1

1

1

8

6

4

7

5

P

P

P

P

P

3

5

7

4

6

3G

a
h

j , p

k
b

f

m

g
c
e

r
n
d

-

-

-

1

1

1

1

3

2

1

0

P

P

P

P

8

9

10

11

CHIP LAYOUT

This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic diagram and respective parts list.

6-26-2

3139 118 3461 pt 1 dd wk149

COMPONENT LAYOUT

This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic diagram and respective parts list.

6-3 6-3

3139 118 3461 pt 1 dd wk149