Daewoo MCM275 Service Manual

Micro System

ServiceService

Service

Service

Service

MCM275

all versions

Service Manual

TABLE OF CONTENTS

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

Troubleshooting ........................................................1-11

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

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

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

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

Main Board .................................................................... 6

CD/MCU Board .............................................................. 7

AC Power Board ............................................................8

Set Mechanical Exploded view & parts list ................... 9

Revision List ................................................................ 10

COMPACT

DIGITAL AUDIO

Page

©

Copyright 2006 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 06

19 Service Audio Printed in The Netherlands Subject to modification

Version 1.1

CLASS 1

LASER PRODUCT

GB

3141 785 30332

1-2

VERSION VARIATIONS

VERSION VARIATIONS:

Type /Versions: MCM275

/05

Features &
Board in used:

Aux in / CDR in x x x x

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

USB Direct

/12 /37 /98

x

x

x

x

x x x x

x

x

SPECIFICATIONS

GENERAL:

Mains voltage : 127/240V -15%+10% Switchable for /98

120V ± 10% for /37

230V ± 10% for /05/12

Mains frequency : 50/60Hz

Clock accuracy : < 4 seconds per day

Dimension centre unit : xx x xx x xx (mm)

Power consumption

Active : 20W

Standby : < 5.5W (DEMO mode)

ECO Power Standby : < 0.5W for /05/12/37

TUNER:

FM

Tuning range : 87.5-108MHz

Grid : 50kHz for /98/12/05

100kHz for /98/55/37

IF frequency : 10.7MHz ± 20kHz

Aerial input : 75 Ω coaxial /05/12/98

300 Ω for /37

Sensitivity at 26dB S/N : < 22µf

Selectivity at 300kHz bandwidth : > 25dB

Image rejection : > 25dB [> 75dB]

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

-3dB Limiting point : < 23.5dBf

Crosstalk at RF=1mV, dev. 40kHz : > 18dB

MW

Tuning range : 531-1602kHz for /05/12/55/98

530-1700kHz for /37/98

Grid : 9kHz for /05/12/55/98

10kHz for /37/98

IF frequency : 450kHz ± 1kHz

Aerial input : Frame aerial 18.1µH

Sensitivity at 26dB S/N : < 4.4mV/M

Selectivity at 300kHz bandwidth : > 18dB

IF rejection : > 45dB

Image rejection : > 28dB

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

AMPLIFIER:

Output power

L & R : 2 x 5.0W (4Ω, 1kHz, 10% THD)

Frequency response within -3dB : 50Hz-16kHz

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

Input sensitivity

Aux in (at 1kHz) : 500mV at 600 Ω

Output sensitivity

Headphone output at 32 Ω : 10mW ± 2dB (Max. vol.)

COMPACT DISC:

Frequency response within ± 3dB : 125Hz - 16kHz

Output level (in Vrms) : 500mV, Z

out

= 100Ω

Signal/Noise ratio (A-weighted) : > 76dB

Distortion at 1kHz : < 0.02%

Channel unbalance (-40dB) : < ±2dB

Channel separation at 1kHz : > 30dB

Emphasis : 15/50 µS (switched

automatically by CD10)

THD Noise(1kHz,500mW) : < 1.0%

[....] Values indicated are for /05/12 only.

MP3-CD Bit Rate : 8-320 kbps
WMA-CD Bit Rate
Sampling Rate : 8, 11.025, 12, 16, 22.05,
24, 32, 44.1, 48 kHz
Format

: 64-192 kbps

: ISO9660, Joliet,UDF

IF rejection : > 60B [> 80dB]

:2 x 4.5W (4Ω, 1kHz, 10% THD) /98

:2 x 4.5W (FTC Power, 4Ω, 1kHz, 10% THD

63Hz-12.5kHz) /37

Dynamic Bass Boost (DBB) : ON / OFF

USB : Host

Signal/Noise ratio (unw.) : > 65dB

Volume attenuation(1kHz) : > 60dB

ID3 : V1 tag/V2 2.0/V2 3.0

MP3 CD WMA:

MP3 : MPEG 1 (ISO/IEC 11172-3)

Layer3

Language Support : English

1-3

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

LF Generator

e.g. PM5110

Fe SBC420 4822 397 30071

DUT

L

R

S/N and distortion mete

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

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

Connectorbox (1M
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

Ω) ..........................................4822 395 11307

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.

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

Preparation

Setting the clock

After connecting MCM275 to the power supply,

set the clock first.

1

Press and hold STANDBY-ON/ ECO

POWER to switch the set to Standby mode

The display shows the set time

-- --:-- -- flashes by default if you have not set

the clock

2

In the standby mode, press and hold DISPLAY/

CLOCK on the remote control

SET CLOCK scrolls on the display

24 HR or 12 HR appears for the initial

clock setting. To select 24-hour clock or

12-hour clock,

On the remote control, press VOLUME +/-

once or more (or turn VOLUME on the

set)

On the remote control, press DISPLAY/

CLOCK to confirm

The hours digits star t flashing

3

Hold down or press VOLUME +/- repeatedly

to set the hours (or turn VOLUME on the

set)

4

Press DISPLAY/CLOCK to confirm

The minutes digits start flashing

5

Hold down or press VOLUME +/- repeatedly

to set the minutes (or turn VOLUME on the

set)

6

Press DISPLAY/CLOCK to confirm

– To exit without storing the clock setting press

STOP 9

Helpful hints:

– The clock setting will be erased when the system

is disconnected from the power supply.

– The set will exit from the clock setting mode if

no button is pressed within 90 seconds.

–To set the clock automatically by using a time

signal which is broadcast together with the RDS

signal see chapter RDS: Automatic clock

setting via RDS.

USB

/

Using the remote control

IMPORTANT!

– Remove the

protective plastic tab

before using the

remote control.

– Always point the

remote control directly

towards IR area.

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

ÉÅ

,

í

,

ë

).

To replace the remote controls’

battery

C

R

2

0

2

5

L

I

T

H

I

U

M

2

3

1

CAUTION!

– Remove the battery if it is exhausted

or will not be used for a long time.

– Batteries contain chemical substances,

so they should be disposed of properly.

1

Press and hold 1 as indicated.

2

Simultaneously, pull the battery tray at 4.

3

Remove the old battery and put a new CR2025

battery in place.

4

Put back the battery tray.

1

2

3

!

9

@

0

#

7

6

5

4

8

%

$

1-8

PREPARATIONS AND CONTROLS

Controls

1

STANDBY-ON/ ECO POWER

– press briefly to switch the set on or off (standby/

ECO POWER);

– In standby or Eco Power mode: press and

hold to toggle between Standby and ECO

POWER mode (power-saving mode)

– Red indicator: lights up red when the set is

switched to ECO POWER mode

2

SOURCE

–selects sound source CD, USB, TUNER or

AUX

– In standby or Eco Power mode: switches the

set on and selects sound source CD, USB,

TUNER or AUX

3

IR

–sensor for the infrared remote control

Helpful hints: Always point the remote control

towards this sensor.

4

PUSH OPEN

– push to unfold or fold the control panel

5

CD OPEN • CLOSE 0

– opens/closes the CD door

6

CD door

7

VOLUME

–adjusts the volume level

– Clock/Timer: adjusts the hours and minutes

8

nn

nn

n

– 3.5 mm headphone socket

Helpful hints:

– Adjust the volume to a moderate level

before you plug in the headphones.

– Connecting headphones will switch off the

speakers.

9

ALBUM/ PRESET + /-

– CD/USB: selects albums (for MP3/WMA only)

– TUNER: selects a preset radio station

4 / ¢

– CD/USB: skips or searches CD tracks/titles

backwards/forwards

– Tu n er : tunes to radio stations

6

– CD/USB: starts or pauses playback

0

DBB (Dynamic Bass Boost)

– turns the bass enhancement on/off

!

DSC (Digital Sound Control)

–selects predefined sound settings: ROCK,

JAZZ, POP, CLASSIC

@

PROGRAM

– CD/USB: programs tracks

– Tuner: programs preset radio stations

#

STOP

– CD/USB: stops playback; erase a program

$

AUX-IN

– connects to the AUDIO OUT jack on the

external appliance

%

– jack for the external USB mass storage device

Remote control

7

8

1

%

$

@

!

9

0

#

2

4

5

6

3

USB

/

AUX

– selects the audio input from an additional

connected appliance

– In standby or Eco Power mode:: switches the

set on and selects the audio input from an

additional connected appliance

3

VOLUME +/-

– adjusts the volume level

– Clock/Timer: adjusts the hours and minutes

4

TIMER

–displays the timer setting

– switches the timer on/off

– enters the timer setting mode (press and hold

for more than 2 seconds)

5

SLEEP

– set the sleep timer

6

MUTE

– switches the sound off temporarily

7

RDS/NEWS

– Tu ne r : selects RDS (Radio Data System)

information

– CD/USB/AUX: activates/deactivates news

8

SHUFFLE

– selects random playback

9

REPEAT

– selects continuous playback

0

DSC (Digital Sound Control)

–selects predefined sound settings: ROC K,

JAZZ, POP, CLASSIC

!

DBB (Dynamic Bass Boost)

– turns the bass enhancement on/off

@

PROGRAM

– CD/USB: programs tracks

– Tu n er : programs preset radio stations

#

DISPLAY/CLOCK

– Clock: - displays the set time

- In standby mode: enters the clock

setting mode (press and hold for more

than 2 seconds)

– TUNER/Audio CD: switches between clock

display and playback

display

– MP3/WMA files: displays disc information

during playback

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

ÉÅ

,

í

,

ë

).

1

BB

BB

B

–press briefly to switch the set on or off (standby/

ECO POWER);

– In standby or Eco Power mode: press and

hold to toggle between Standby and ECO

POWER mode (power-saving mode)

2

Source buttons

USB

–selects USB source

– In standby or Eco Power mode:: switches the

set on and selects USB source.

CD

–selects CD source

– In standby or Eco Power mode:: switches the

set on and selects CD source.

TUNER

– selects TUNER source and toggles between the

wavebands: FM and MW

– In standby or Eco Power mode:: switches the

set on and selects TUNER source

Controls

1-9

CONTROLS & INSTALLATIONS

$

4 / ¢

– CD/USB: skips or searches CD tracks

backwards/forwards

– Tuner: tunes to radio stations

ALBUM/ PRESET 3 / 4

– CD/USB: selects the next/previous album (for

MP3/WMA only)

– TUNER: selects a preset radio station

ÉÅ

– CD/USB: starts or pauses playback

9

– CD/USB: stops playback; erase a program

%

OPEN • CLOSEç

– opens/closes the CD door

Controls Installation

Placing MCM275

With the detachable stand and by-packed wall

mounting kit , MCM275 allows you to place it in

two ways: on desktops with stand or on

walls without stand.

Mounting stand onto the set

MCM275 is equipped with a stand. To mount

the stand onto the set,

1

Put MCM275 on a flat and firm surface, rear side

facing up

2

As shown, align the stand to the slots at set’s

bottom, 4 FRONT facing down

P
R
E
S
S

F
R
O
N
T

F
R
O
NT

P
R
E
S
S

3

Push the stand down into the slots

When the stand is in place, you will hear a

click

See Appendix: How to mount your

MCM275 onto walls to learn more about

wall mounting.

Mounting MCM275 onto walls

Installation

MW loop

antenna

Speaker

(left)

Speaker

(right)

FM wire

antenna

AC power cord

Rear connections

Warning:

– Never make or change connections with

the mains supply switched on.

– Install your set near the AC outlet and

where the AC power plug can be reached

easily.

A

Speaker connections

Use the supplied speakers only. Using other

speakers can damage the set or the sound

quality will be negatively affected.

Connect the cable of the left speaker to LEFT

(red and black) and the cable of the right

speaker to RIGHT (red and black) as follows:

a. Press the clip of the red terminal and fully

insert the stripped portion of the colored (or

marked) speaker cable into the socket, then

release the clip

b. Press the clip of the black terminal and fully

insert the stripped portion of the black (or

unmarked) speaker cable into the socket, then

release the clip

B

Antenna connections

MW antenna

1

Assemble the loop antenna as shown:

1-10

CONTROLS & INSTALLATIONS

Installation

2

Fit the plug of the loop antenna to AM (MW)

ANTENNA as shown below

3

Adjust the position of the antenna for optimal

reception (as far away as possible from the TV,

VCR or other radiation sources)

FM antenna

The wire antenna supplied can only be used to

receive nearby stations. For better reception we

recommend using a cable antenna system or an

outdoor antenna.

1

Extend the wire antenna and fit it to FM

ANTENNA as shown below

AM

ANTENNA

Or

Insert the loop antenna into the slot on the set

Note: If you are using a cable antenna system or

an outdoor antenna, fit the antenna plug, instead of

the wire antenna, to FM ANTENNA .

By connecting a USB mass storage device

(including USB flash memory, USB flash players

or memory cards) to the Hi-Fi system, you can

enjoy the device’s stored music through the

powerful speakers of Hi-Fi system.

1

Check you have unfolded the control panel

2

Insert the USB device’s USB plug into the socket

on the set ‘s foldable control panel

2

Move the antenna in different positions for

optimal reception (as far away as possible from

the TV, VCR or other radiation sources)

3

Fix the antenna’s end to the wall

Connecting an additional

appliance

Connecting a USB device or memory

card

or

for the devices with USB cable:

a. Insert one plug of the USB cable (not

supplied) to the socket

on the set ‘s

foldable control panel

b. Insert the other plug of the USB cable to the

USB output terminal of the USB device

or

for the memory

card:

a. Insert the memory card into a card reader

(not supplied)

b. Use a USB cable (not supplied) to connect

the card reader to the socket

on the set ‘s foldable control panel

Installation

Using AC power

1

Make sure all the connections have been made

before switching on the power supply

2

Connect the AC power cord to the wall socket.

This switches on the power supply

When MCM275 is switched to standby, it is still

consuming some power. To disconnect the

system from the power supply completely,

remove the power plug from the wall

socket.

The type plate is located on the rear of the

set.

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

instructions.

Warning!

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).

This product complies with the radio

interference requirements of the European

Community.

CAUTION

Visible and invisible laser radiation. If the

cover is open, do not look at the beam.

High voltage! Do not open. You run the risk

of getting an electric shock.

The machine does not contain any user-

serviceable parts.

Modification of the product could result in

hazardous radiation of EMC or other

unsafe operation.

4

Select AUX mode on the set

Helpful hints:

–Always refer to the owner’s manual of other

equipment for complete connection.

Connecting a non-USB device

It is possible to use an additional appliance, e.g.

TV, VCR or CD recorder with the set. On

MCM275, you can playback music from an

external source.

1

Follow the Step 1 under Connecting a USB

device or memory card

2

Insert one plug of the audio cable (not supplied)

to the socket AUX IN on the set ‘s foldable

control panel

3

Connect the other end of the audio cable to the

AUDIO OUT terminal of the additional

appliance

1-11

English

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

help.

“NO DISC” is displayed.

Some files on the USB device are not

displayed.

Radio reception is poor.

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.

Problem

Solution

Insert a disc.

Wait until the moisture condensation at the lens

has cleared.

Replace or clean the disc, see “Maintenance”.

Use a finalised CD-RW or a correct MP3/WMA

-CD format disc.

Check if the number of folders exceeds 99 or

the number of titles exceeds 999

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.

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.

The remote control does not function

properly.

The timer is not working.

The Clock/Timer setting is erased.

Select the source (CD or TUNER, for example)

before pressing the function button (ÉÅ,í,

ë).

Reduce the distance between the remote

control and the system.

Insert the batter y with its polarities

(+/– signs) aligned as indicated.

Replace the battery.

Point the remote control directly toward

IR sensor on the front of the system.

Check the set is switched off

Set the clock correctly.

Press TIMER to switch on the timer.

Power has been interrupted or the power cord

has been disconnected. Reset the clock/timer.

Troubleshooting

TROUBLESHOOTING

1-12

DISMANTLING INSTRUCTIONS

2-1 2-1

Dismantling the Rear Portion and PCBs

1) Press the 2 juts and pull out the Stand as shown in figure

1.

Figure 1

Figure 2

Dismantling the Rear Portion and PCBs

5) Loosen 2 screws E to remove the Bracket Jack Board as

shown in Figure 4.

6) Loosen 3 screws F to remove the Main Board as shown

in figure 5.

Figure 4

2) Loosen 5 screws A and 6 screws B to remove the Rear

Cabinet as shown in figure 2.

3) Loosen 3 screws C to remove the SP & ANT Jack Board

as shown in figure 3.

4) Loosen 5 screws D to remove the Power Module as

shown in figure 3.

Figure 5

Dismantling of the Display Lens & the Volume knob

1) Use a flat head screw driver to give a push in the direction

as shown in figure 6.

2) Place two small screw drivers in between the front cabinet

& knob to give more leverage in pulling out the Volume

Knob as shown in figure 7.

Figure 3

Figure 7

Figure 6

Dismantling of the CD Module & CD Door Carrier

1) Loosen 5 screws J mounting the Key Board to the Front

Cabinet to remove the Key Board as shown in figure 8.

2) Loosen 4 screws H and 3 screws G to CD Module as

shown in figure 8.

3) Loosen 2 screws I to remove the Servo Motor Mechanism

as shown in figure 8.

2-2

2-2

Service pos A

Figure 8

4) Loosen 4 screws K to remove the Right CD Door Carrier

and 4 screws L to remove the Left CD Door Carrier as

shown in figure 9.

Service pos B

Figure 9

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.

SERVICE TEST PROGRAM

3-1

3-1

KEY
TEST

Button pressed?

Button pressed?

NEXT

Y

Display shows

Table 1

9

Y

To enter Service

Testprogram hold

PLAY & Door Open/Close

buttons

depressed while

plugging mainscord in.

Display shows the

MCU version

"MCU-V

yy"

(Main menu)

N

N

Figure 1

Door switch is ignored → CD door can be opened.

*

V refers to Version

yy refers to Software version number of the uProcessor
(counting up from 01 to 99)

DISPLAY
TEST

PREV

Button pressed?

Y

Display shows Figure 1
All display flags on.

PREV

Button pressed?

Y

Display shows alternate

segment display from SEG0

to SEG64.

ADC
TEST

N

N

DBB

Button pressed?

Y

Display shows "ADC0 Value"

for ADC0

(Input Line - For key scanning)

DBB

Button pressed?

Y

Display shows "ADC1 Value"

for ADC1

(Input Line - ioNTC Heat
detection for transformer)

N

N

Various

other Tests

TEST

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

LEAVE SERVICE
TEST PROGRAM

Activated with

PROGRAM

9

to Exit

Disconnect
mains cord

ACTION

"EEP CLR" is displayed while the erase processing.

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

Key test table

KeyNr Set key KeyNr Set key KeyNr Set key

0 CD 10 RDS 20 PROGRAM
1 AUX 11
2 TUNER 12 CLOCK/DISP

LAY
3 SOURCE 13 ALBUM + SLEEP
4

STANDBY/ON

5

OPEN/CLOSE

6

VOLUME DOWN

14 ALBUM - TIMER

15

SKIP PREV 25 DBB

16 SKIP NEXT 26 DSC
7 VOLUME UP 17 NULL 27 MUTE
8 NULL 18 NULL 28 USB
9 NULL 19 REPEAT

Table 1

21 SHUFFLE
22 NULL
23
24

PREV

Button pressed?

Y

No Display shows

9

Button pressed?

Y

ADC Test is used for checking the
ADC inputs to the microprocessor.

The display shows an ADC value
between 0 and 255 for an input
signal between 0 and 5V.

N

N

DBB

Button pressed?

Y

Display shows "ADC2 Value"

for ADC2

(Input Line - Rotary volume)

DBB

Button pressed?

Y

Display shows "ADC3 Value"

for ADC3

(Input Line - Door switch status)

DBB

Button pressed?

Y

Display shows "ADC4 Value"

for ADC4

(Input Line - Version detection)

9

Button pressed?

Y

N

N

N

N

SET BLOCK DIAGRAM

4-1

4-1

SET WIRING DIAGRAM

5-1

5-1

6-1

6-1

BLOCK DIAGRAM - RDS/RBDS PRE-PROCESSOR
SAA6588T

BLOCK DIAGRAM

multi-path

data

available

pause

output

output

C-BUS

2

I

MAIN BOARD

TABLE OF CONTENTS

Internal IC Diagram ............................................... 6-1 to 6-5

Main Board(5757) Layout Top View ................................ 6-6

Main Board(5757) Layout Bottom View .......................... 6-7

Circuit Diagram - Main Board(5757) ............................... 6-8

Main Board(5762) Layout Top View ................................ 6-9

Main Board(5762) Layout Bottom View ........................ 6-10

Circuit Diagram - Main Board(5762) ............................. 6-11

HP Jack Board............................................................... 6-12

Electrical Parts List ........................................................ 6-13

2.2 nF

input

SDA

9

2

POWER

14

DDA

V

SCL

10

12

C-BUS SLAVE
I

OSCILLATOR

TEST

6

TRANSCEIVER

4

AND CLOCK

5

1

3

CONTROL

17

15

SUPPLY

AND RESET

C8

100 nF

5 V



MAD

SSD

V

OSCO

OSCI

TCON MRO

ref

V

SSA

V

R1

C7

R4

C6

2.2 嘕F

1 k"

Q1

470

100

k"

nF

MGK535

C5

MHz

n h4.332

C4

82 pF

n = 1 to 4

47 pF

DAVN

C9

100 nF

DDD

VNICT

5 V

C10

560 pF

UOCS

8

71918

RDS/RDBS

RDS/RDBS

CLOCKED

57 kHz

16

MPX

330 pF

C1

multiplex

PSWN

11

DECODER

DEMODULATOR

COMPARATOR

8th ORDER

BAND-PASS

嘕F

0.47

C2

audio

input

MPTH
2

SAA6588

"

10

k

R2

0.47 嘕F

C3

inputs

k"

10

R3

REGISTER

INTERFACE

4

DETECTOR

SIGNAL QUALITY

DETECTOR

MULTI-PATH

PAUSE

DETECTOR

13

AFIN

5

4

20

LVI N

C11

level

6-2 6-2

BLOCK DIAGRAM

mute/stand-by

switch input

MLC351

output 1

15 k

15 k

x 1

VA

stand-by

switch

V

P

mute
switch

stand-by
reference
voltage

18 k

18 k

2

k

60
k

mute switch

C

m

power stage

4

8

mute switch

VA

VA

C

m

2

k

60
k

power stage

6

275

SGND

signal

ground

PGND

output 2

non-inverting

input 1

non-inverting

input 2

9

supply voltage
ripple rejection

output

3

1

TDA1517

mute
reference
voltage

input

reference

voltage

V

P

power
ground
(substrate)

PIN DESCRIPTION - RDS/RBDS PRE-PROCESSOR
SAA6588T

PINNING

SYMBOL PIN DESCRIPTION

MRO 1 mXOWLSDWKUHFWL¿HURXWSXW

MPTH 2 mXOWLSDWKGHWHFWRURXWSXW

TCON 3 WHVWFRQWUROLQSXWSLQ

OSCO 4 RVFLOODWRURXWSXW

OSCI 5 RVFLOODWRULQSXW

V

V

SSD

DDD

6 digital gURXQG0V)

7 digital supply vROWDJH5V)

DAVN 8 data availabOHRXWSXWDFWLve LOW)

2

SDA 9 I

SCL 10 I

C-bus serial data I/O

2

C-bus serLDOFORcNLQSXW

SYMBOL PIN DESCRIPTION

PSWN 11 pause sZLWFKRXWSXWDFWLve LOW)

MAD 12 slavHDGGUHVV/6%LQSXW

AFIN 13 DXGLRVLJQDOLQSXW

V

V

DDA

SSA

14 DQDORJVXSSO\vROWDJH5V)

15 DQDORJgURXQG0V)

MPX 16 multiple[LQSXWVLJQDO

V

ref

17 refHUHQFHvROWDJHRXWSXW

SCOUT 18 EDQGSDVV¿OWHURXWSXW

CIN 19 FRPSDrDWRULQSXW

LV IN 20 le vHOLQSXW

BLOCK DIAGRAM - POWER AMPLIFIER
TDA1517

MRO

OSCI

1

2

3

4

5

MPTH

TCON

OSCO

SAA6588T

V

V

DAVN

SSD

DDD

SDA

SCL

6

7

8

9

10

MGK534

20

19

18

17

16

15

14

13

12

11

LVIN

CIN

SCOUT

V

ref

MPX

V

SSA

V

DDA

AFIN

MAD

PSWN

6-3

.This text is here in

BLOCK DIAGRAM

PRESCALER

PROGRAMMABLE

COUNTER

STABILIZER

WINDOW

DETECTOR

LAST-STATION

MEMORY

AM/FM

INDICATOR

IN-LOCK

DETECTOR

FM

DETECTOR

PILOT

DETECTOR

CHARGE

PUMP

MULTIPLEXER

CRYSTAL

OSCILLATOR

SHIFT REGISTER

FM

FRONT-END

FM

OSCILLATOR

FM

IF2

FM

IF1

FM

MIXER

SEQUENTIAL

CIRCUIT

STATUS

REGISTER

AM

FRONT-END

AM

OSCILLATOR

AM

DETECTOR

V/I

CONVERTER

AM

MIXER

AM

IF

AGC

AFC

hard mute

level

PLL

DECODER

MATRIX

SDS

MUTE

up

down

level

RFGND

DATA

BUS-CLOCK

WRITE-ENABLE

FM-RFI

V

STAB(A)

V

STAB(B)

AM-RFI

XTAL

RIPPLE

25

23

1

263031

2

AGC

AM-IFI/O2

AM-MIXERAMOSC

AM-IFI1

6

40 41

36 44

822

32

20

19

13

15

14

9

12

24

16

181739 37 333535

38

43

422827

29

34

7

21

10

11

4

MO/ST

AFRO

MUTE

AFC

(n)

AFC

(p)

AFC

VCO

LFI

PILFIL

AFLO

stereo

stereo

mono

38 kHz

19 kHz

FM-IFI1 FM-IFI2

FM-IFO1

FM-MIXER

FMOSC

FM-RFO

V

CC1

V

DDD

TEA5757;

TEA5759

FM

AM

DGND

P1

P0

TUNE

RFGND

MPXI

AFO

V

CC2

IFGND FSIFMDEM

MHA111

6-3

PIN DESCRIPTION - POWER AMPLIFIER
TDA1517

PINNING

" 1tupni gnitrevni-non11VNI

V

P

" 2tupni gnitrevni-non92VNI

handbook, halfpage

7supply voltage

INV1

SGND

SVRR

OUT1

PGND

OUT2

V

P

M/SS

INV2

1

2

3

4

5

6

7

8

9

TDA1517

MLC352

1tuptuo41TUO

2tuptuo62TUO

dnuorg langis2DNGS

dnuorg rewop5DNGP

tupni hctiws ybdnats/etum8SS/M

tuptuo noitcejer elppir egatlov ylppus3RRVS

NOITPIRCSEDNIPLOBMYS

BLOCK DIAGRAM - SELF TUNED RADIO
TEA5757

Pin configuration for SOT110-1 and

SOT352-1.

k3 lacipyt ecnadepmi tupni( tupni retl¿ cimarec ro TFI141IFI-MA " )

dnuorg FRMF24DNGFR

04 lacipyt ecnadepmi tupni( tupni lairea FRMF34IFR-MF " )

tupni roticapac CGA44CGA

NOITPIRCSEDNIPLOBMYS

Pin configuration.

TEA5757H
TEA5759H

MHA112

1

2

3

4

5

6

7

8

9

10

11

33

32

31

30

29

28

27

26

25

24

23

12

13

14

15

16

17

18

19

20

21

22

44

43

42

41

40

39

38

37

36

35

34

RIPPLE

AM-RFI

FM-RFO

RFGND

FMOSC

AMOSC

V

CC1

TUNE

VCO

AFO

MPXI

FM-IFI2

AFC

P1

P0

WRITE-ENABLE

DATA

BUS-CLOCK

DGND

XTAL

MO/ST

V

DDD

LFI

MUTE

AFLO

AFRO

PILFIL

IFGND

FMDEM

AFC

(n)

AFC

(p)

FSI

V

CC2

AGC

FM-RFI

RFGND

AM-IFI1

AM-MIXER

FM-MIXER

V

STAB(A)

FM-IFI1

AM-IFI/O2

FM-IFO1

V

STAB(B)

6-4

6-4

PIN DESCRIPTION - SELF TUNED RADIO
TEA5757

PINNING

NOITPIRCSEDNIPLOBMYS

tupni roticapac elppir1ELPPIR

tupni FRMA2IFR-MA

dnuorg ot tiucric FRMF denut lellarap3OFR-MF

etartsbus dna dnuorg FR4DNGFR

V

CC1

7supply voltage

tuptuo tnerruc gninut8ENUT

tupni rotallicso dellortnoc egatlov9OCV

tupni retl¿-pool21IFL

tupni etum31ETUM

tupni retl¿ rotceted tolip61LIFLIP

tupni rotanimircsid cimarec81MEDMF

AFC

(n)

AFC

(p)

V

CC2

V

DDD

BUS-CLOCK 27 bus-clock input

WRITE-ENABLE 29 bus write-enable input

V

STAB(B)

AM-IFI/O2 36 input/output to IF-Tank (IFT); output: current source

V

STAB(A)

19 AFC negative output

20 AFC positive output

22 supply voltage for tuning

23 digital supply voltage

tupni latsyrc52LATX

dnuorg latigid62DNGD

tuptuo/tupni atad sub82ATAD

tiucric-CL zHk05423CFA

34 internal stabilized supply voltage (B)

38 internal stabilized supply voltage (A)

rotacidni htgnerts-dle¿12ISF

)0P(trop tuptuo elbammargorp030P

)1P(trop tuptuo elbammargorp131P

FM-MIXER 39 FHUDPLF¿OWHURXWSXWRXWSXWLPSHGDQFHW\SLFDO )

AM-MIXER 40 open-collector output to IFT

dnuorg ot tiucric rotallicso-MF denut lellarap5CSOMF

dnuorg ot tiucric rotallicso-MA denut lellarap6CSOMA

k5 lacipyt ecnadepmi tuptuo( tuptuo FA MF/MA01OFA )

egats XPM dna rotceted ,FI fo dnuorg71DNGFI

tuptuo noitacidni gninut dna oerets/onom42TS/OM

033 lacipyt ecnadepmi tupni( 2tupni FIMF332IFI-MF )

033 lacipyt ecnadepmi tuptuo( 1tuptuo FIMF531OFI-MF )

033 lacipyt ecnadepmi tupni( 1tupni FIMF731IFI-MF )

PIN DESCRIPTION - SELF TUNED RADIO
TEA5757

k051 lacipyt ecnadepmi tupni( tupni redoced oerets11IXPM )

k3.4 lacipyt ecnadepmi tuptuo( tuptuo lennahc tfel41OLFA )

k3.4 lacipyt ecnadepmi tuptuo( tuptuo lennahc thgir51ORFA )

PINNING

NOITPIRCSEDNIPLOBMYS

tupni roticapac elppir1ELPPIR

tupni FRMA2IFR-MA

etartsbus dna dnuorg FR3DNGFR

dnuorg retnuoc4DNGC

tupni retnuoc5ITNUOC

dnuorg ot tiucric rotallicso-MA denut lellarap6CSOMA

V

CC1

7supply voltage

tnerruc tuptuo gninut8ENUT

tupni rotallicso dellortnoc egatlov9OCV

k5 lacipyt ecnadepmi tuptuo( tuptuo FA MF/MA01OFA )

k051 lacipyt ecnadepmi tupni( tupni redoced oerets11IXPM )

tupni retl¿ pool21IFL

tupni etum31ETUM

k3.4 lacipyt ecnadepmi tuptuo( tuptuo lennahc tfel41OLFA )

k3.4 lacipyt ecnadepmi tuptuo( tuptuo lennahc thgir51ORFA )

tupni retl¿ rotceted tolip61LIFLIP

egats XPM dna rotceted ,FI fo dnuorg71DNGFI

tupni rotanimircsid cimarec81MEDMF

AFC

(n)

19 AFC negative output

AFC

(p)

20 AFC positive output

rotacidni htgnerts dle¿12ISF

V

CC2

22 supply voltage for tuning

V

DDD

23 digital supply voltage

tuptuo noitacidni gninut dna oerets/onom42TS/OM

tupni latsyrc52LATX

dnuorg latigid62DNGD

BUS-CLOCK 27 bus-clock input

tuptuo/tupni atad sub82ATAD

WRITE-ENABLE 29 bus write-enable input

)0P(trop tuptuo elbammargorp030P

)1P(trop tuptuo elbammargorp131P

CFA MA rof tiucric tupni-CL zHk05423CFA

033 lacipyt ecnadepmi tupni( 2tupni FIMF332IFI-MF )

V

STAB(B)

34 internal stabilized supply voltage (B)

033 lacipyt ecnadepmi tupni( 1tuptuo FIMF531OFI-MF )

AM-IFI/O2 36 input/output to IFT; output: current source

033 lacipyt ecnadepmi tupni( 1tupni FIMF731IFI-MF )

V

STAB(A)

38 internal stabilized supply voltage (A)

FM-ON/OFF 39 FM ON/OFF port

AM-MIXER 40 open-collector output to IFT

6-5

6-5

BLOCK DIAGRAM - SELF TUNED RADIO
TEA5762 (FOR /12/05)

PILFIL

16

PILOT

MO/ST

24

DETECTOR

LFI

12

19 kHz

PLL

VCO

9

38 kHz

DECODER

21

18172728

FM

IFGND FSIFMDEM

FM

DETECTOR

IF2

AM/FM

INDICATOR

BUS-

CLOCK

STATUS

REGISTER

SHIFT REGISTER

DATA

WRITE-

FM-IFI2

29

ENABLE

333537

FM

IF1

FM-IFI1 FM-IFO1

TUNER

SWITCH

39

FM-ON/OFF

38

34

7

CC1

V

STAB(A)VSTAB(B)

V

STABILIZER

23

DDD

V

RIPPLE

AFLO

14

stereo

IN-LOCK

DETECTOR

up

level

down

LAST-STATION

1

AFRO

15

mono

MATRIX

stereo

MEMORY

PRESCALER

4

5

COUNTI

MUTE

13

MUTE

SDS

level

PUMP

CHARGE

hard mute

CIRCUIT

SEQUENTIAL

FM

AM

COUNTER

PROGRAMMABLE

MULTIPLEXER

CGND

AFC

WINDOW

CRYSTAL

25

XTAL

(n)

AFC

20

19

TEA5762

DETECTOR

OSCILLATOR

26

DGND

(p)

AFC

AFC

32

V/I

CONVERTER

AM

DETECTOR

AGC

IF

AM

AM

MIXER

AM

OSCILLATOR

AM

END

FRONT

2

AM-RFI

MBE815

10 11 342
2280313446314046

CC2

V

TUNE RFGND RFGNDMPXIAFO

P0

P1AGCAM-IFI/ O2AM-MIXERAMOSC

AM-IFI1

PIN DESCRIPTION - SELF TUNED RADIO
TEA5762 (FOR /12/05)

6-6

LAYOUT DIAGRAM - MAIN BOARD (5757) for /37/98
TOP SIDE

6-6

6-7

LAYOUT DIAGRAM - MAIN BOARD (5757) for /37/98
BOTTOM SIDE

6-7

6-8

CIRCUIT DIAGRAM - MAIN BOARD (5757) for /37/98

6-8

6-9

LAYOUT DIAGRAM - MAIN BOARD (5762) for /05/12
TOP SIDE

6-9

6-10 6-10

LAYOUT DIAGRAM - MAIN BOARD (5762) for /05/12
BOTTOM SIDE

6-11 6-11

CIRCUIT DIAGRAM - MAIN BOARD (5762) for /05/12

6-12

6-12

LAYOUT DIAGRAM - HP JACK BOARD
TOP SIDE

LAYOUT DIAGRAM - HP JACK BOARD
BOTTOM SIDE

CIRCUIT DIAGRAM - HP JACK BOARD

6-13

6-13

Q631 9940 000 02642 TRANSISTOR, 3CA8550

Q803 9940 000 04218 TRANS PHP20N06T

RF401 9940 000 04237 FM MODULE FE450-G11.

T401 9940 000 04518 AM IFT 7MM C712KC-004

T402 9940 000 04518 AM IFT 7MM C712KC-004

T403 9940 000 01213 AM IFT 7MM

T404 9940 000 04519 FM IFT 7MM KS2599

T405 9940 000 04517 AM OSC 7MM 7M1A2146

UR11 9940 000 04239 IC SAA6588T

UR12 9940 000 04241 IC 78L05 REGULATOR

VC403 9940 000 01615 TRIMMER CAP 10PF N450

VR401 9940 000 04232 VAR RES 100K 3P 1/10W

X401 9940 000 04231 CRYSTAL 75KHZ DT381

XR11 9940 000 04238 CRYSTAL 4.332MHZ

Note: Only these parts mentioned in the list are

normal service parts.

7-1

CD & MCU BOARD

7-1

TABLE OF CONTENTS

Main Board Layout Top View........................................... 7-2

Main Board Layout Bottom View ..................................... 7-3

Circuit Diagram - CD Part................................................ 7-4

Circuit Diagram - MCU Part............................................. 7-5

Layout Diagram - SW Board ........................................... 7-6

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

LAYOUT DIAGRAM - CD&MCU BOARD
TOP SIDE

7-2

7-2

LAYOUT DIAGRAM - CD&MCU BOARD
BOTTOM SIDE

7-3

7-3

CIRCUIT DIAGRAM - CD&MCU BOARD
CD PORTION

7-4

7-4

CIRCUIT DIAGRAM - CD&MCU BOARD
MCU PORTION

7-5

7-5

LAYOUT DIAGRAM - SW BOARD
TOP SIDE

7-6 7-6

LAYOUT DIAGRAM - SW BOARD
BOTTOM SIDE

8-1

AC POWER BOARD

8-1

IC BLOCK DIAGRAM - LCD DRIVER
HT1622

Block Diagram

TABLE OF CONTENTS

Internal IC Diagram ......................................................... 8-1

Layout Diagram - AC Power Board ................................. 8-2

Circuit Diagram - AC Power Board.................................. 8-3

Layout Diagram - AC Socket Board ................................ 8-4

Layout Diagram - Door Moter Board ............................... 8-4

Layout Diagram - RC Board ............................................ 8-4

Display Board .................................................................. 8-5

Key Board ........................................................................ 8-6

Speaker & Ant Board....................................................... 8-7

Electrical Parts List .......................................................... 8-8

PIN DESCRIPTION - LCD DRIVER
HT1622

Pad Description

1CS

2RD

3WR

4DAT AI/O Serial data input/output with Pull-high resistor

5 VSS

6 OSCI I

7 VDD

8 VLCD I LCD operating voltage input pad

9 IRQ

10, 11 BZ, BZ

12~14 T1~T3 I Not connected

15~22 COM0~COM7 O LCD common outputs

23~54 SEG0~SEG31 O LCD segment outputs

I

I

I

O

O 2kHz or 4kHz tone frequency output pair

noitpircseDO/IemaNdaP.oNdaP

Chip selection input with Pull-high resistor. When the CS
high, the data and command read from or written to the HT1622
are disabled. The serial interface circuit is also reset. But if CS
at logic low level and is input to the CS
mand transmission between the host controller and the HT1622
are all enabled.

READ clock input with Pull-high resistor. Data in the RAM of
the HT1622 are clocked out on the rising edge of the RD
The clocked out data will appear on the data line. The host con
troller can use the next falling edge to latch the clocked out data.

WRITE clock input with Pull-high resistor. Data on the DATA
line are latched into the HT1622 on the rising edge of the WR sig
nal.

Negative power supply, ground

If the system clock comes from an external clock source, the ex
ternal clock source should be connected to the OSCI pad.

Positive power supply

Time base or Watchdog Timer overflow flag, NMOS open drain
output

pad, the data and com

is logic

signal.

is

-

-

-

-

8-2

8-2

LAYOUT DIAGRAM - AC POWER BOARD
TOP SIDE

LAYOUT DIAGRAM - AC POWER BOARD
BOTTOM SIDE

CIRCUIT DIAGRAM - AC POWER BOARD

8-3

8-3

8-4

8-4

LAYOUT DIAGRAM - AC SOCKET BOARD
TOP SIDE

LAYOUT DIAGRAM - AC SOCKET BOARD
BOTTOM SIDE

LAYOUT DIAGRAM - RC BOARD
TOP SIDE

LAYOUT DIAGRAM - RC BOARD
BOTTOM SIDE

LAYOUT DIAGRAM - DOOR MOTOR BOARD
TOP SIDE

LAYOUT DIAGRAM - DOOR MOTOR BOARD
BOTTOM SIDE

CIRCUIT DIAGRAM - RC BOARD

8-5

8-5

LAYOUT DIAGRAM - DISPLAY BOARD
TOP SIDE

CIRCUIT DIAGRAM - DISPLAY BOARD

LAYOUT DIAGRAM - DISPLAY BOARD
BOTTOM SIDE

8-6 8-6

LAYOUT DIAGRAM - KEY BOARD
TOP SIDE

CIRCUIT DIAGRAM - KEY BOARD

LAYOUT DIAGRAM - KEY BOARD
BOTTOM SIDE

8-7 8-7

LAYOUT DIAGRAM - SP & ANT BOARD
TOP SIDE

CIRCUIT DIAGRAM - SP & ANT BOARD

LAYOUT DIAGRAM - SP & ANT BOARD
BOTTOM SIDE

8-8

8-8

VR701 9940 000 04258 ROTARY ENCODER

9940 000 04251 EC TERMINAL 1P
F901 9940 000 04243 FUSE PTU 1A 250V 3.9X10.5MM /37/98
RL901 9940 000 04246 RELAY DC6V AC10A /05/12/37
T901 9940 000 04244 POWER TRASFO AC230V /05/12

T902 9940 000 04245 POWER TRASFO AC230V /05/12
T901

!

!
!

!
!

9940 000 04431

POWER TRASFO AC115/230V /98

Note: Only these parts mentioned in the list are

normal service parts.

9-1

SET MECHANICAL EXPLODED VIEW

8

7

6

5

4

3

2

9

!

@

#

$

%

9-1

^

& *

1

·

‹

?

º

ª

•

§

‡

£

™

(

)

¡

›

9-2

M

2

8

9-2

ECHANICAL & ACCESSORIES PARTSLIST ELECTRICAL PARTSLIST - MISCELLANEOUS

1 9940 000 04295 LENS-CD DOOR /05/12 T901 9940 000 04521 TRASFO AC120V 60HZ /37
1 9940 000 04417 LENS-CD DOOR /37/98 T902 9940 000 04522 TRASFO AC120V 60HZ /37
2 9940 000 04294 DOOR-CD 9940 000 01675 POWER AC WIRE VDE 230V /1
3 9940 000 04296 HOLDER CD DOOR CARRIER (L)
4 9940 000 04302 COVER POWER BUTTON 9940 000 02223 POWER AC WIRE BSI /05

5 9940 000 04305 KNOB-VOLUME
6 9940 000 04299 LENS DISPLAY /12/05 9940 000 04262 FFC 7P P1.25MM L155MM /37

9940 000 04418

6
7 9940 000 04297 HOLDER CD DOOR CARRIER (R) 9940 000 04281 FFC 21P P1.25MM L110MM
8 9940 000 04306 LENS BAR 9940 000 04282 CD MECHANISM KSM900AAA

9 9940 000 04293 CABINET FRONT 9940 000 04413 MAIN PWB ASSEMBLY /37
11 9940 000 04303 BUTTON POWER/SOURCE 9940 000 04414 AC POWER ASSEMBLY /37
12 9940 000 04319 GEAR WHEEL C 9940 000 04415 CD/MCU PWB ASSEMBLY /37
13 9940 000 04317 GEAR WHEEL A
14 9940 000 04318 GEAR WHEEL B

15 9940 000 04325 BELT MOTOR
17 9940 000 04292 CABINET REAR
17 9940 000 04416 CABINET REAR /37
17
18 9940 000 04327 RUBBER A (DIA.10X2)

9940 000 04435

LENS DISPLAY /37/98 9940 000 04271 FFC 12PIN P1.25MM L95MM

CABINET REAR /98

Note: Only these parts mentioned in the list are

9940 000 04328 SPEAKER BOX ASSY
9940 000 04329 FM ANT WIRE 75R 1.0M

9940 000 04331 AM LOOP ANT 164X75MM
9940 000 04332 REMOTE CONTROL
9940 000 04421 FM ANT WIRE 2P 300R L=2.6M /37

9940 000 04798 PLASTIC WALL PLUG

normal service parts.

!
!

9940 000 02082

9940 000 04262

Note: Only these parts mentioned in the list are

normal service parts.

AC CORD 1.5M 2.5A 250V /98

FFC 7P P1.25MM L155MM /37/9

19 9940 000 04322 STAND COVER
20 9940 000 04321 STAND BASE
21 9940 000 04326 RUBBER FOOT (DIA.12X4)
22 9940 000 04323 CD DAMPER (BLACK) 20DEG
24 9940 000 01664 DAMPER GEAR ASSEMBLY

26 9940 000 05312 CATCH ASSEMBLY
28 9940 000 04304 BRACKET OPEN/CLOSE BUTTON
29 9940 000 04324 SPRING CONTROL PANEL
30 9940 000 04307 BUTTON OPEN/CLOSE
31 9940 000 04315 COVER PLAY BUTTON

32 9940 000 04309 BUTTON FW/FF
33 9940 000 04312 PANEL FUNCTION /05/12/37
33
34 9940 000 04313 COVER FUNCTION PANEL
35 9940 000 04311 BUTTON FUNCTION

36 9940 000 04308 BUTTON PLAY
37 9940 000 04333 IR LENS
38 9940 000 04316 PULLEY SERVO MOTOR
39 9940 000 04314 BRACKET FUNCTION PANEL

9940 000 04419

PANEL FUNCTION /98

10-1

REVISION LIST

1.0 Manual 3141 785 30330

Initial Service Manual released.

1.1 Manual 3141 785 30331

In this version, Mechanical & Accessories Partslist (Page 9-2) has been updated, the Plastic Wall Plug

is added to Mechanical and Accessories Parts List as below.

9940 000 04798 Plastic Wall Plug

1.1 Manual 3141 785 30332

In this version, Set Exploded View (Page 9-1) and Mechanical & Accessories Partslist (Page 9-2) have been

updated, the Catch Assembly has been added to Mechanical and Accessories Parts List as below .

26 9940 000 05312 Catch Assembly

and replace 9940 000 03371 Hook-Cassette Door, 9940 000 03384 Spring Torsion Left and 9940 000 04298
Bracket - Cassette Recloser in Partslist.