Philips MCM 275 Manuel utilisateur

CLASS 1

LASER PRODUCT

COMPACT

DIGITAL AUDIO

Service

MCM275

TABLE OF CONTENTS

transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise

without the prior permission of Philips.

Published by SL 0733 Service Audio Printed in The Netherlands Subject to modification

Micro System

3141 785 30334

Version 1.4

Service Manual

all versions

From week 714 onwards, the CD Mechanism was changed to

Dayang M93. New CD & MCU Board was used to match with

the new CDM.

Please refer chapter 1 to 9 for sets produced before week 713 and

chapter 11 for sets produced in or after week 714.

Revision List ...........................................................................P11-1

1-2

/12 /37 /98

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

VERSION VARIATIONS:

Type /Versions: MCM275

Features &

Board in used:

/05

x x x x

VERSION VARIATIONS

1-3

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 :194(W)x269(H)x90(D) (mm)

Power consumption

Active : 20W

Standby :< 5.5W (DEMO mode)

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

TUNER:

Tuning range : 87.5-108MHz

Grid : 50kHz for /98/12/05

100kHz for /98/55/37

IF frequency : 10.7MHz ±20kHz

Aerial input : 75 Ωcoaxial /05/12/98

300 Ωfor /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

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, Zout = 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]

:2x 4.5W (4Ω, 1kHz, 10% THD) /98

:2x 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

1-4

LF Generator

e.g. PM5110

Recorder

Use Universal Test Cassette CrO2 SBC419 4822 397 30069

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion mete

e.g. Sound Technology ST1700B

DUT

or Universal Test Cassette Fe SBC420 4822 397 30071

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion meter

e.g. Sound Technology ST1700B

DUT

Use Audio Signal Disc

(replaces test disc 3)

SBC429 4822 397 30184

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

DUT

S/N and distortion meter

e.g. Sound Technology ST1700B

Frame aerial

e.g. 7122 707 89001

Tuner AM (MW,LW)

To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage.

Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).

RF Generator

e.g. PM5326

Ri=50Ω

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

DUT

RF Generator

e.g. PM5326

S/N and distortion meter

e.g. Sound Technology ST1700B

Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).

Ri=50Ω

Tuner FM

MEASUREMENT SETUP

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

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 (1MΩ) ..........................................4822 395 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

SERVICE AIDS

HANDLING CHIP COMPONENTS

1-6

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.

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.

“Pour votre sécurité, ces documents

doivent être utilisés par des spécia-

listes agréés, seuls habilités à réparer

votre appareil en panne”.

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.

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."

CLASS 1

LASER PRODUCT

3122 110 03420

Warning !

Invisible laser radiation when open.

Avoid direct exposure to beam.

Varning !

Osynlig laserstrålning när apparaten är öppnad och spärren

är urkopplad. Betrakta ej strålen.

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:

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

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:

• 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

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.

• Adjust your solder tool so that a temperature around − is reached and stabilized at the solder joint. Heating-time of the

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.

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

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).

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

external companies.

• Special information for BGA-ICs:

- 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.

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

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

• On our website www.atyourservice.ce.Philips.com you find more information to:

∗BGA-de-/soldering (+ baking instructions)

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

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

For additional questions please contact your local repair-helpdesk.

SERVICE INSTRUCTION

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.

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):

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

inner parts by the customer.

1-8

PREPARATIONS AND CONTROLS

Preparation

Setting the clock

After connecting MCM275 to the power supply,

set the clock first.

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

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 start flashing

Hold down or press VOLUME +/- repeatedly

to set the hours (or turn VOLUME on the

set)

Press DISPLAY/CLOCK to confirm

The minutes digits start flashing

Hold down or press VOLUME +/- repeatedly

to set the minutes (or turn VOLUME on the

set)

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

To replace the remote controls’

battery

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.

Press and hold 1 as indicated.

Simultaneously, pull the battery tray at 4.

Remove the old battery and put a new CR2025

battery in place.

Put back the battery tray.

1-9

PREPARATIONS AND CONTROLS

Controls

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

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

–sensor for the infrared remote control

Helpful hints: Always point the remote control

towards this sensor.

PUSH OPEN

– push to unfold or fold the control panel

CD OPEN • CLOSE 0

– opens/closes the CD door

CD door

VOLUME

–adjusts the volume level

–Clock/Timer: adjusts the hours and minutes

– 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.

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 ne r : tunes to radio stations

–CD/USB: starts or pauses playback

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

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

3VOLUME +/-

–adjusts the volume level

–Clock/Timer: adjusts the hours and minutes

4TIMER

–displays the timer setting

–switches the timer on/off

–enters the timer setting mode (press and hold

for more than 2 seconds)

5SLEEP

–set the sleep timer

6MUTE

– switches the sound off temporarily

7RDS/NEWS

–Tuner : selects RDS (Radio Data System)

information

–CD/USB/AUX: activates/deactivates news

8SHUFFLE

– selects random playback

9REPEAT

–selects continuous playback

0DSC (Digital Sound Control)

–selects predefined sound settings: ROCK,

JAZZ, POP, CLASSIC

!DBB (Dynamic Bass Boost)

–turns the bass enhancement on/off

@PROGRAM

–CD/USB: programs tracks

–Tu ne r : 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

1BB

–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)

2Source buttons

USB

–selects USB source

–In standby or Eco Power mode:: switches the

set on and selects USB source.

–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

1-10

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

–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,

1Put MCM275 on a flat and firm surface, rear side

facing up

2As shown, align the stand to the slots at set’s

bottom, 4 FRONT facing down

PRESS

FRONT

PRESS

3Push 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.

ASpeaker 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

BAntenna connections

MW antenna

1Assemble the loop antenna as shown:

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