Philips MCM-510 Service Manual

Service

Micro System

Service Manual

Service Service

Service

MCM510/22/25/33

TABLE OF CONTENTS

Page

Location of pc boards & Version variations................1-2

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

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

Service Aids, Safety Instruction, etc................ 1-5 to 1-6

Lead-free Information & Service Instruction ..............1-7

Preparations & Controls & Troubleshooting.. 1-8 to 1-10

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

Service Test Programs ............................................... 3-1

Set Block diagram ...................................................... 4-1

Set Wiring diagram .....................................................5-1

Front Board (MCU Board) ............................................. 6

Tuner Board (ECO Non Cenelec) .............................. 7A

Tuner Board (ECO Cenelec) ...................................... 7B

Main Board .................................................................... 8

Cassette Board .............................................................. 9

CD & MP3-CD2002 Board........................................... 10

Rectifier Board ............................................................. 11

Set Mechanical Exploded view & parts list ................. 12

COMPACT

DIGITAL AUDIO

CLASS 1

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 0535 Service Audio Printed in The Netherlands Subject to modification

Version 1.0

LASER PRODUCT

3141 785 30540

LOCATION OF PCBS

1-2

VERSION VARIATIONS:

Type /Versions: MCM510

Features & Board in used:

Aux in / CDR in

Line Out

Video Out

Surround Out

Subwoofer Out

Power Booster Out

Digital Out

Digital in

Matrix Surround

RDS x x

News x x

Dolby Pro Logic (DPL)

Incredible Surround

Karaoke Features

Voltage Selector

ECO Power Standby (LCD Display Off) x x

ECO6 Tuner Board - Systems Non-Cenelec

ECO6 Tuner Board - Systems Cenelec

/22

x x

/25

/33

SPECIFICATIONS

1-3

GENERAL:

Mains voltage :

230V ± 10% for /22/25 220V ± 10% for /33

Mains frequency : 50/60Hz

Clock accuracy : < 4 seconds per day

Dimension centre unit : 175(W) x 254(H) x 315(D) (mm)

Power consumption

Active : 15W

Standby : < 3W (DEMO mode off)

ECO Power Standby : < 1W for /22/25

TUNER:

Tuning range : 87.5-108MHz

Grid : 50kHz

IF frequency : 10.7MHz ± 20kHz

Aerial input : 75 Ω coaxial

Sensitivity at 26dB S/N : < 22dBf

Selectivity at 300kHz bandwidth : > 33dB

Image rejection : > 20dB [> 25dB]

Distortion at RF=1mV, dev. 75kHz : < 3%

-3dB Limiting point : < 23.5dB

Crosstalk at RF=1mV, dev. 40kHz : > 26dB

Tuning range : 531-1602kHz

Grid : 9kHz

IF frequency : 450kHz ± 1kHz

Aerial input : Frame aerial 18.1µH

Sensitivity at 26dB S/N : < 4.0mV/M

[> 3.25mV/M]

Selectivity at 300kHz bandwidth : > 20dB

IF rejection : > 24dB

Image rejection : > 20dB [> 28 dB]

Distortion at RF=50mV, M=80% : < 5%

AMPLIFIER:

Output power

L & R : 2 x 25W (4Ω, 1kHz, 10% THD)

Frequency response within -3dB : 60Hz-14kHz

Digital Sound Control (DSC) : Jazz / Rock / Pop / Classic

Dynamic Bass Boost (DBB) : ON / OFF

Input sensitivity

Aux in (at 1kHz) : 500mV at 600 Ω

Output sensitivity

Headphone output at 32 kΩ : 15mW ± 2dB (Max. vol.)

COMPACT DISC:

Frequency response within ± 3dB : 63Hz - 14kHz

Output level (in Vrms) : 500mV, Z

= 100Ω

out

Signal/Noise ratio (A-weighted) : > 65dBA

Distortion at 1kHz : < 0.02%

Channel unbalance at 1kHz : < ±2dB

Channel separation at 1kHz : > 30dB

Emphasis : 15/50 µS (switched

automatically by CD10)

THD Noise(1kHz) : < 1.0%

Outband Attenuation : > 35dB

MP3-CD Bit Rate : 8-320 kbps WMA-CD Bit Rate

: 64-192 kbps

Sampling Rate : 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 96 kHz Format

: ISO9660, Joliet

CASSETTE RECORDER:

Number of track : 2 stereo

Tape speed : 4.76 cm/sec

 2%

Wow and flutter : < 0.48% JIS

Fast-wind/Rewind time C60 : 130 sec

Bias system : 76kHz

 10kHz

Rec/Pb frequency response within 8dB : 125Hz - 10kHz

Signal to Noise Ratio (Type I) : > 48dBA

Tuning range : 153-279kHz /22

Grid : 3kHz

IF frequency : 450kHz ± 1kHz

Aerial input : Frame aerial

Sensitivity at 26dB S/N : [< 7.7mV/M]

Selectivity at 18kHz bandwidth : [> 24dB]

IF rejection : [> 24dB]

Image rejection : [> 20dB]

Distortion at RF=50mV, m=80% : [< 5%]

[....] Values indicated are for "ECO Cenelec Board" only.

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).

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

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

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

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.

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

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

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.

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.

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

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

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.

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

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

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

Warning !

Varning !

3122 110 03420

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 !

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.

1-7

INFORMATION ABOUT LEAD-FREE SOLDERING

Philips CE is producing lead-free sets from 1.1.2005 onwards.

IDENTIFICATION:

Regardless of special logo (not always indicated) one must treat all sets from 1 Jan 2005 onwards, according next rules:

Example S/N:

• Use only lead-free solder alloy Philips SAC305 with order code 0622 149 00106. If lead-free solder-paste is required, please contact

the manufacturer of your solder-equipment. In general use of solder-paste within workshops should be avoided because paste is not easy to store and to handle.

• Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must be able

• Adjust your solder tool so that a temperature around

• Mix of lead-free solder alloy / parts with leaded solder alloy / parts is possible but PHILIPS recommends strongly to avoid mixed

• Use only original spare-parts listed in the Service-Manuals. Not listed standard-material (commodities) has to be purchased at

• Special information for BGA-ICs:

• For sets produced before 1.1.2005 (except products of 2004), containing leaded solder-alloy and components, all needed spare-parts

• On our website www.atyourservice.ce.Philips.com

o To reach at least a solder-temperature of 40 o To stabilize the adjusted temperature at the solder-tip o To exchange solder-tips for different applications.

solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400 otherwise wear-out of tips will rise drastically and flux-fluid will be destroyed. To avoid wear-out of tips switch off un-used equipment, or reduce heat.

solder alloy types (leaded and lead-free). If one cannot avoid or does not know whether product is lead-free, clean carefully the solder-joint from old solder alloy and re-solder with new solder alloy (SAC305).

external companies.

- always use the 12nc-recognizable soldering temperature profile of the specific BGA (for de-soldering always use the lead-free temperature profile, in case of doubt)

- lead free BGA-ICs will be delivered in so-called 'dry-packaging' (sealed pack including a silica gel pack) to protect the IC against moisture. After opening, dependent of MSL-level seen on indicator-label in the bag, the BGA-IC possibly still has to be baked dry. (MSL=Moisture Sensitivity Level). This will be communicated via AYS-website. Do not re-use BGAs at all.

will be available till the end of the service-period. For repair of such sets nothing changes.

BGA-de-/soldering (+ baking instructions)

∗

Heating-profiles of BGAs and other ICs used in Philips-sets

∗

Bottom line of typeplate gives a 14-digit S/N. Digit 5&6 is the year, digit 7&8 is the week number, so in this case 2005 wk12

So from 0501 onwards = from 1 Jan 2005 onwards

Important note you avoid mixing solder-alloys (leaded/ lead-free). So best to always use SAC305 and the higher temperatures belong to this.

Due to lead-free technology some rules have to be respected by the workshop during a repair:

: In fact also products of year 2004 must be treated in this way as long as

− is reached and stabilized at the solder joint. Heating-time of the

you find more information to:

For additional questions please contact your local repair-helpdesk.

You will find this and more technical information within the "magazine", chapter "workshop news".

SERVICE INSTRUCTION

Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points:

· Route the wire trees correctly and fix them with the mounted cable clamps.

· Check the insulation of the AC Power lead for external damage.

· Check the strain relief of the AC Power cord for proper function.

· Check the electrical DC resistance between the AC Power Plug and the secondary side (only for sets which have a AC Power isolated power supply):

1. Unplug the AC Power cord and connect a wire between the two pins of the AC Power plug.

2. Set the AC Power switch to the "on" position (keep the AC Power cord unplugged!).

3. Measure the resistance value between the pins of the AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be larger than 4.5 Mohm (For U.S. it should be between

4.2 Mohm and 12 Mohm).

4. Switch "off" the set, and remove the wire between the two pins of the AC Power plug.

• Check the cabinet for defects, to avoid touching of any

inner parts by the customer.

PREPARATIONS AND CONTROLS

Preparations

Rear connections

The type plate is located at the rear of the

system.

For users in the U.K.: please follow the

instructions on page 2.

Pow er

Before connecting the AC power cord to the

wall outlet, ensure that all other connections

have been made.

WARNING!

–For optimal performance, use only the

original power cable.

–Never make or change 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).

Antennas Connection

Connect the supplied MW loop antenna and FM

antenna to the respective terminals. Adjust the

position of the antenna for optimal reception.

MW Antenna

AM ANTENNA

Position the antenna as far as possible from a TV,

VCR or other radiation source.

Speaker

Preparations

FM Antenna

For better FM stereo reception, connect an

outdoor FM antenna to the FM AERIAL (FM

ANTENNA) terminal.

Speakers Connection

Front Speakers

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 "-".

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

Connect the audio left and right OUT terminals

of a TV, VCR, Laser Disc player, DVD player or

CD Recorder to the AUX IN terminals.

Note:

– If you are connecting equipment with a

monaural output (a single audio out terminal),

connect it to the AUX IN left terminal. Alternatively,

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

output sound still remain monaural).

Inserting batteries into the

remote control

Insert two batteries (type R03 or AAA) 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 of properly.

1-8

PREPARATIONS AND CONTROLS

VOLUME

MP3

CD/CD

R/CD

RW COMPATIBLE

INCREDIBLE

SURROUND

PROGRAM

TUNING

ALBUM

PRESET

SOURCE

TIMER SET

DBBDSC

OPEN/

RDS

CLOCK SETBAND

STANDBY

ECO POWER

RECORD DISPLAY

MCM510 MICRO SYSTEM

(

OPEN CLOSE

)

™

Controls

Controls on the system and

remote control

Eco Power/STANDBY ON y

– to switch the system on or to Eco Power

standby/normal standby with clock display.

Display screen

– to view the current status of the system.

BAND/DISPLAY

for Tuner ............. to select waveband : FM, MW or

LW.

for CD/MP3-CD…to select disc information

display mode.

PROGRAM

for CD/MP3-CD…to programme disc tracks.

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

stations.

CLOCK SET/RDS

for Tuner ............. to activate RDS news.

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

clock function.

TUNING S/T ( 5 /6)

for CD ................. to fast reverse/forward the disc.

for CD/MP3 CD…(on the system only) to select

a desired track.

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

radio frequency.

for Tape ............... to rewind or fast forward.

ALBUM/PRESET/TIMER SET 4/3

for MP3-CD .....to select previous/next album.

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

for Timer Set (3) (on the system only) to set the

timer function.

STOP 9

for CD/MP3-CD…to stop playback or to clear a

programme.

for Tape ............... to stop playback or recording.

PLAY/PAUSE 2;

for CD/MP3 CD…to start or interr upt playback.

for Tape ............... to start playback.

Ta pe deck

OPEN/CLOSE 0

– to open tape compar tment.

DBB/INCREDIBLE SURROUND (IS)

– to create a super-enhanced stereo effect.

– to enhance the bass.

DSC (Digital Sound Control)

– to select the desired sound effect : OPTIMAL/

ROCK/POP/JAZZ.

VOLUME (VOL + / -)

– to increase or decrease the volume.

– (on the system only) to adjust the hours and

minutes for the clock/timer functions.

SOURCE

– to select the respective sound source : CD,

TUNER, TAPE or AUX.

RECORD

– to start recording.

iR sensor

– infrared sensor for remote control.

OPEN•CLOSE

– to open or close the disc tray.

(

n Headphone

– Plugs in the headphones jack. The speakers

output will be cancelled.

)

MODE

– to shuffle and repeat a track/disc.

w /

– to select a desired track.

™

MUTE

– interrupts and resumes sound reproduction.

TIMER

– to activate/deactivate the timer function.

SLEEP

– to activate/deactivate or set the sleep timer.

∞

– 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 (for example CD,

TUNER).

– Then select the desired function (for

example 6 ,

1-9

1-10

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 use solvents such as

benzene, thinner, commercially

available cleaners, or antistatic spray intended for

analogue records.

Cleaning the disc lens

After prolonged use, dirt 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

, the capstan(s)

, and

pressure roller(s)

after every 50 hours of

tape operation.

Caution: Do not rotate the heads during

cleaning.

Use a cotton swab slightly moistened with

cleaning fluid or alcohol.

You can also clean the heads by playing a

cleaning tape once.

A A

Demagnetizing the heads

Use a demagnetizing tape available at your

dealer.

Maintenance

“NO DISC” is displayed.

Radio reception is poor.

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”.

Use a finalised CD-RW or CD-R.

If the signal is too weak, adjust the antenna or

connect an external antenna for better

reception.

Increase the distance between the Micro HiFi

System and your TV or VCR.

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 remedy a problem by following these hints, consult your dealer or

Philips for help.

Problem

Solution

Troubleshooting

Recording or playback cannot be made.

“CHK TAPE” is displayed.

The tape deck door cannot open.

The system does not react when buttons

are pressed.

Sound cannot be heard or is of poor

quality.

The left and right sound outputs are

reversed.

The remote control does not function

properly.

The timer is not working.

The Clock/Timer setting is erased.

Clean deck parts, see “Maintenance”.

Use only normal (IEC I) tape for recording.

Apply a piece of adhesive tape over the missing

tab space.

Remove and reconnect the AC power plug and

switch on the system again.

Remove and reconnect the AC power plug and

switch on the system again.

Adjust the volume.

Disconnect the headphones.

Check that the speakers are connected correctly.

Check if the stripped speaker wire is clamped.

Make sure the MP3-CD was recorded within

32-256 kbps bit rate with sampling frequencies

at 48 kHz, 44.1 kHz or 32 kHz.

Check the speaker connections and location.

Select the source (CD or TUNER, for example)

before pressing the function button

().

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 toward

IR sensor on the front of the system.

Set the clock correctly.

Press TIMER SET 3 (TIMER on the remote

control) to switch on the timer.

If a recording is in progress, stop the recording.

Power has been interrupted or the power cord

has been disconnected. Reset the clock/timer.

Problem

Solution

Tr oubleshooting

6 ,

DISMANTLING INSTRUCTIONS

2-1

Dismantling of the Cover Cassette and Universal Loader

1) Push 1 catch each on the left & right side then remove the Cover Cassette in the direction as shown in Figure 1 and Figure 1A.

2) Loosen 4 screws to remove the Cover Top by sliding

it out towards the rear before lifting up.

-2 screws on the rear

-1 screw each on the left & right side

3) Loosen 2 screws each to remove the Panel Left and

Panel Right. The Panels are removed by sliding it

towards the rear and outwards.

-1 screw on the rear

-1 screw on the side

- see Service position A

6) Loosen 2 screws A (see Figure 2) to remove the Bracket

Module Mounting and CD Module.

-1 screw each on the left & right side

Detaching the Front Panel assembly from the Bottom/Rear assembly

Lift up and out

Figure 1

Push catches on two sides

Figure 1A

Detaching the Front Panel assembly from the Bottom/Rear assembly

1) Remove 2 screws B (see Figure 3) from the bottom of the

Cabinet Front.

2) Release the fixation of the Combi Board (pos1102-1003)

to Bracket Combi (pos 155) by releasing the 2 catches C1

(see Figure 7) and pulling the Combi Board outwards as

shown in Figure 7A.

3) Uncatch 2 catches C2 (see Figure 7) on the left & right

sides of the Cabinet Front (pos 101) and slides the Front

Panel assembly out towards the front.

- see Service position C

Figure 2

Figure 4A

Dismantling of the Front Panel assembly

1) The Knob Volume can be remove by pulling it out

in the direction as shown in Figure 5.

Loosen 3 screws C (see Figure 6) to remove the Bracket Front Cabinet Display.

Loosen 3 screws D (see Figure 6) to remove Front Display Board.

Loosen 2 screws E (see Figure 6) to remove the Headphone Board.

Loosen 4 screws F (see Figure 7) to remove the Module Tape Deck.

Figure 4

Figure 5

Figure 3

DISMANTLING INSTRUCTIONS

2-2

Dismantling of the Front Panel assembly

Dismantling of the Rear Panel assembly

1) Loosen 3 screws K and 2 catches C5 (see Figure 8) to

remove the Tuner Board assembly.

2) Loosen 3 screws L (see Figure 8) to free the Main

Board.

3) Loosen 1 screw M (see Figure 8) to free the Mains

Socket Bracket.

4) Loosen 1 scew N and 2 catches C6 (see Figure 8) to

free the Panel Rear by sliding it out towards the rear.

Note : Tuner Board assembly and Mains Socket Bracket

can also be removed together with the Panel Rear..

Figure 6

Figure 8

Figure 7

DISMANTLING INSTRUCTIONS

2-3 2-3

Repair Hints & Service Positions

1) During repair it is possible to disconnect the Tuner Board

and/or CD Module completely unless the fault is sus-

pected to be in that area. This will not affect the

performance of the rest of the set.

Service position A

Service position B

Note: The flex cables are very fragile, care should be taken

not to damage them during repair. After repair, be

very sure that the flex cables are inserted properly

into the flex sockets before encasing, otherwise faults

may occurs.

Service position C

SERVICE TEST PROGRAM

3-1

DISPLAY TEST

PLAY button

pressed?

Display shows all

segments and flags

for checking open circuits.

see figure 1

PLAY button

pressed?

BLANK

STOP button

pressed?

CD SERVO TEST

NEXT button

pressed?

Display shows

N N

ALBUM UP

pressed?

FOCUS search

Display shows

Enter focus test

FOCUS found?

Display shows

disc motor turns

STOP button pressed in any step returns to begin of Service Testprogram.

SLIDE MOTOR test

To enter Service

Testprogram hold

PLAY & DISPLAY buttons

depressed while

plugging mainscord in.

Display shows version number of the µP - software.

ALBUM DN

pressed?

Display shows

Enter sledge test

NEXT button

pressed?

Slide moves

outwards as

button

long as

is held

depressed.

Door switch is ignored → CD door can be opened.

Tuner test the sound settings Volume up/down,

DSC, IS and DBB function as in normal mode, but flags will not be indicated on the display in all steps.

stands for Service mode,

is software version, eg. S 1262

FORMAT EEPROM

DISPLAY

button

pressed?

Display shows

skip to

if it is fail,

skip to

EEPROM is cleared and

default values are stored.

PREV button

pressed?

Slide moves

inwards as

button

long as

is held

depressed.

STOP button

pressed?

This test should be done at the end of the production process

TAPE TEST

REC button

Display shows

Solenoids of the deck

are activated for 2s and

deactivated for 3s.

PLAY/DISPLAY button

Switch all actions off

pressed?

SOURCE TEST

PRESET UP

Display shows version

of tuner board as long as

PROGRAM

e.g.

Tuner is normal working except for the PROGRAM button.

STOP button

pressed?

key will be

pressed.

pressed?

so that every set is customised before leaving factory.

Figure 1

PLAY button

pressed?

Slide stops

moving

PLAY button

pressed?

Slide stops

moving

TUNER VERSIONS

REGION

SET VERSIONS

TUN EURT

EUROPE

FM/MW

/22/25

TUN USA

USA

FM/MW

/37 / 21/21M/30

table 2

TUN OSE

OVERSEAS

FM/MW

1) Grid switchable

100/10kHz - 50/9kHz

SET BLOCK DIAGRAM

4-1

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