Philips Mcm 9 Service Manual

							
MCM9/22/25/33
© Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved.  No part of this publication may be reproduced, sto\
red in a retrieval system or 
transmitted, in any form or by any means, electronic, mechanical, photoc\
opying, or otherwise without 
the prior permission of Philips.
Published by SL0521 Service Audio  Printed in The Netherlands Subject to modifi cation.
GB  3141 785 30211 
Micro System
TABLE OF CONTENTS
 Page
Location of PC Boards & Versions Variation ........................ 1-2
Specifi cations ....................................................................... 1-3
Measurement Setup ............................................................. 1-4
Service Aids, Safety Instruction, etc ...........................1-5 to 1-7
Preparations & Controls .............................................1-8 to 1-9
Troubleshooting .........................................................\
......... 1-10
Disassembly Instructions & Service positions ......................... 2
Service Test Program ........................................................... 3-1
Set Block Diagram ................................................................ 4-1
Set Wiring Diagram .............................................................. 5-1
Front Board ............................................................\
................. 6
ECO Tuner Part : Systems Non-Cenelec  ............................. 7A
                            Systems Cenelec  ...........................\
..........7B
Mains board ........................................................................\
..... 8
ETF8 Tape Module  ................................................................. 9
CD-MP3-WMA 5250 Module ................................................. 10
Combi and Regulation board ................................................. 11
Mechanical Exploded View & Parts List ................................ 12
Revision list ........................................................................\
... 13
Version 1.1 
						

							
1-2
LOCATION OF PC BOARDS
/22 /25
Aux in / CDR i
nxx
Line
  Out
Video Out
Surround
  Out
Subwoofer Ou
t
Digital
  Out
Digital
 in
Matrix
  Surround
RDS/NEW
Sxx
Dolby Pro Logic (DPL
)
Incredible Surroun
dxx
Karaoke
  Features
V oltage Selector
ECO Power Standby (Clock Display Off
)xx
ECO6
 T uner Board - Systems Non-Cenelec
ECO6
 T uner Board - Systems Cenelecxx
   VERSION 
V
ARIA TIONS:
Type /V ersions: MCM9
Features
 &
Board
  in used:
Mains Board Display Boar
dT
uner Board ETF8 SD Board
Eeprom 
Board
Regulator Board
(Below
 T uner Board)
/33
x
x
x
x 
						

							1-3
SPECIFICATIONS
GENERAL:
Mains voltage  : 220-230V for /22/25 
Power consumption : 80W at 1/8 P
rated
< 15W at Standby (Demo mode off)
< 0.5W at ECO Standby
Clock accuracy : < 4 seconds per day
Dimension centre unit : 175 x 252 x 350mm
TUNER:
FM
T uning range : 87.5-108MHz
Grid : 50kHz
IF frequency : 10.7MHz  ± 25kHz
Aerial input : 75  Ω coaxial
Sensitivity at 26dB S/N  :  < 7 µV
Selectivity at 600kHz bandwidth : > 25dB
Image rejection : > 25dB [> 75dB]
Distortion at RF=1mV, dev. 75kHz : < 3%
-3dB Limiting point : < 8 µV
Crosstalk at RF=1mV, dev. 40kHz : > 18dB
MW
T uning range : 531-1602kHz
Grid : 9kHz
IF frequency : 450kHz  ± 1kHz
Aerial input : Frame aerial
Sensitivity at 26dB S/N : < 4.4mV/M
Selectivity at 18kHz bandwidth : > 18dB
IF rejection : > 45dB
Image rejection : > 28dB
Distortion at RF=50mV, M=80% : < 5%
AMPLIFIER:
Output power (6  Ω, 1kHz, 10%  THD)
L & R : 2 x 50W RMS
Frequency response within -3dB : 50Hz-16kHz
Bass : 60Hz  ± 3 Steps
T reble : 12kHz  ± 3 Steps
Incredible Surround : On / Off
Input sensitivity Aux in (at 1kHz) : 500mV at 600  Ω
CDR in (at 1kHz) : 1000mV at 600  Ω
Output sensitivity Headphone output at 32 ohm : 15mW  ± 2dB (Max. vol.)
CD Headphone output at 32 ohm : 5mW  ± 2dB (Max. vol.) CASSETTE RECORDER:
Number of track : 2 tracks (stereo)
T
ape speed : 4.76 cm/sec  ± 2%
W ow and flutter : < 0.4% DIN
Fast-wind/Rewind time C60 : 130 sec
Bias system : 78kHz  ± 10kHz
Rec/Pb frequency response within 8dB : 80Hz - 10kHz
Signal to Noise Ratio  (Type I) : > 48dBA
Signal to Noise Ratio  (Type II) : > 52dBA
COMPACT DISC:
Measurement done directly at the connector on the board.
Output Resistance : < 100  Ω
Output Voltage (0dB, 1kHz) : 0.5Vrms  ± 1dB (unloaded)
Channel Unbalance : <  ±1dB
Channel Separation (1kHz) : > 60dB
Frequency Response ( 3dB) : 20Hz-20kHz
Signal to Noise Ratio : > 76dBA
MP3-CD Bit Rate : 32-256 kbps
Sampling Frequencies : 32, 44.1, 48 kHz
[....] Values indicated are for ECO6 Cenelec Board only. 
						

							LF Generator e.g. PM5110
Recorder
Use Universal Test Cassette CrO2SBC419  4822 397 30069
LEVEL METERe.g. Sennheiser UPM550
with FF-filter
S/N and distortion metere.g. Sound Technology ST1700B
L
RDUT
or Universal Test Cassette 
FeSBC420  4822 397 30071
LEVEL METERe.g. Sennheiser UPM550
with FF-filter
S/N and distortion metere.g. Sound Technology ST1700B
L
RDUT
CD
Use Audio Signal Disc
(replaces test disc 3)SBC429  4822 397 30184
Bandpass
250Hz-15kHz
e.g. 7122 707 48001LF Voltmeter e.g. PM2534DUT
S/N and distortion meter e.g. Sound Technology ST1700B
Frame aeriale.g. 7122 707 89001
Tuner AM (MW,LW)
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage.
Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).
RF Generator e.g. PM5326
Ri=50Ω
Bandpass
250Hz-15kHz
e.g. 7122 707 48001LF Voltmeter e.g. PM2534DUT
RF Generator 
e.g. PM5326
S/N and distortion meter e.g. Sound Technology ST1700B
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50Ω
Tuner FM
MEASUREMENT SETUP
1-4 
						

							1-5
HANDLING CHIP COMPONENTS
SERVICE AIDS
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 
						

							1-6
GBWARNING
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.
FATTENTION
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
DWARNUNG
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.
NLWAARSCHUWING
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.
IAVVERTIMENTO
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.
GBESD PROTECTION EQUIPMENT:
Complete Kit ESD3 (small tablemat, wristband,
connection box, extention cable and earth cable)...........4822 310 10671
Wristband tester....................................................................4822 344 13999
CLASS  1
LASER PRODUCT
GBWarning !
Invisible laser radiation when open.
Avoid direct exposure to beam.
SVarning !
Osynlig laserstrålning när apparaten är öppnad och spärren
är urkopplad.  Betrakta ej strålen.
SFVaroitus !
Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen!
DKAdvarse !
Usynlig laserstråling ved åbning når sikkerhedsafbrydere er
ude af funktion. Undgå udsaettelse for stråling.
F
Pour votre sécurité, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne.
GB
Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified,
be used
Safety components are marked by the symbol 
!.
NL
Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in
zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen,
identiek aan de gespecificeerde, worden toegepast.
De Veiligheidsonderdelen zijn aangeduid met het symbool 
!
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.
Less composants de sécurité sont marqués 
!
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.
Sicherheitsbauteile sind durch das Symbol 
! markiert.
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.
Componenty di sicurezza sono marcati con 
!
GB
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. 
						

							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∞C 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
WARNING!–Use only the supplied speakers.
The combination of the main unit and
speakers provide the best sound.
Using other speakers can damage the
unit and sound quality will be negatively
affected.
–Never make or change connections
with the power switched on.
–Connect the AC power cord to the
power outlet only after you have finished
hooking up everything.
Step 1: Connecting FM / MW
antennas–Place the MW loop antenna on a shelf or
attach it to a stand or wall.
–Extend the FM antenna and fix its ends to the
wall.
–Adjust the position of the antennas for
optimal reception.
–Position the antennas as far as possible from a
TV,  VCR or other radiation source to prevent
unwanted noise.
–For better FM stereo reception, connect
external FM antenna.
MW
Connections
Step 2: Connecting the
speakersConnect 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 inser t the
stripped por tion of the speaker wire into the
terminal as shown.
Helpful Hint:
–Ensure that the speaker cables are correctly
connected.  Improper connections may damage the
system due to short-circuit.
–Do not connect more than one speaker to any
one pair of +/- speaker terminals.Step 3: Connecting the AC
power cordAUTO INSTALL – PRESS PLAY may appear
on the display panel when the AC power cord is
plugged into the power outlet for the first time.
PressÉÅ  on the main unit to store all available
radio stations or press Ç to exit (refer to
“Tuner Operations”).
Step 4: Inserting batteries into
the remote control1
32
1
Open the batter y compar tment cover.
2
Inser t two batteries type R06 or AA, following
the indications (+-) inside the compartment.
3
Close the cover.
Using the remote control to operate
the system
1
Aim the remote control directly at the
remote sensor (iR) on the main unit.
2
Select the source you wish to control by
pressing one of the source select keys on the
remote control (for example CD, TUNER).
3
Then select the desired function (for example
ÉÅ,í,ë).
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.
Connections 
						

							1-9
Functional Overview
Main unit and remote control
1STANDBY ON B
–Switches to Eco Power standby mode or turns
on the system.
–*Switches to standby mode.
2
ECO POWER indicator
–Lights up when the system is in Eco Power
standby mode.
3
Disc tray
4
Display screen
5
iR
–Point the remote control towards this sensor.
6
CD / TUNER / TAPE /AUX/CDR
–Selects the relevant active mode.
–CD: switches to CD mode.
–TUNER: toggles between FM and MW band.
–TAPE: switches to Tape mode.
–AUX/CDR: toggles between AUX and CDR
mode.
£!™^$∞6)%¡7
ª•º§8›
CD TUNER TAPE AUX
REPEAT PROGRAM SHUFFLE
TAPE A/R DISPLAY
CLOCK TIMER TIMER ON/OFFNATURAL
REC DIM SLEEP SNOOZE
BASS TREBLE
INC. SURR
MUTE
(
‹€⁄
* = Press and hold the button for more than two seconds.
WMA-
CD/MP3-
CD/ CD-
R/CD-
RW COMPATIBLE
         MICRO SYSTEM
LOGIC DECKAUTO REVERSE
CDTUNER TAPEAUX/CDR
TREBLE•
•BASSDEMO STOP REC
MASTER VOLUME
IR
CLOCKRDS/
NEWS
STANDBY-ON
ECO POWER
OPEN/
CLOSE
OPEN/
CLOSE
TUNING
ALBUM / TITLE
PLAY/PAUSE
135468790@!#
*&^%$
2
7
DEMO STOP 7
–Exits an operation.
–CD: stops playback or clears a programme .
–TUNER: *erases a preset radio station.
–TAPE: stops playback or recording.
(only on the main unit)
–*Turns on / off the demonstration mode.
8
3 8
–CD: star ts/pauses playback.
–TAPE: star ts playback or selects other side of the
tape during playback.
–CLOCK: toggles between hour and minutes
setting.
(only on the main unit)
–TUNER: *enters Plug & Play mode and / or star ts
preset radio station installation.
9
n
–Plug in the headphones jack.  The speakers
output will be cancelled.
24
27
0
TUNINGS T (4ALBUM/TITLE3)
–CD: *searches backward / forward or selects a
track.
–MP3/WMA: *selects an album or selects a title
(track).
–TUNER: tunes the radio frequency up/down.
–TAPE: rewind or fast forward.
–CLOCK: sets the hours or minutes.
!
REC
–*star ts recording on a tape.
@
OPEN / CLOSE
–Opens / closes the tape deck door.
#
Tape deck
$
BASS/TREBLE (+-)
–Selects a desired BASS (low tone) or TREBLE
(high tone) level.
%
MASTER VOLUME  (VOL +-)
–Adjusts the volume level.
^
CLOCK
–Switches to clock display mode or enter clock
setting mode.
&
RDS/NEWS
–In tuner mode, selects RDS information.
–In other modes, turns on / off news.
*
OPEN / CLOSE0
–Opens / closes the disc tray.Control buttons available on the
remote only
(
REPEAT
–Repeats a track / disc / all programmed tracks.
)
TAPE A/R
–Selects the desired tape playback modes : one
side, both sides or auto replay.
¡
íë
–MP3/WMA: selects an MP3/WMA title (track).
–CD: selects a track.
–TUNER: selects a preset radio station.
–TAPE: selects other side of the tape.
Functional Overview
* = Press and hold the button for more than two seconds.
™
àá
–MP3WMA: selects an album from MP3/WMA
disc.
–CD: searches backward/forward.
–TUNER: tunes the radio frequency up / down.
–TAPE: rewind or fast forward.
–CLOCK: sets the hours or minutes.
£
TIMER
–Displays the timer setting or enter timer setting
mode.
DIM
–Selects different levels of brightness for display
panel.
∞
INC. SURR.
–Turns on / off the incredible surround sound
effect.
§
MUTE
–Mutes or restores the volume .
SLEEP
–Sets the sleep timer function.
•
SNOOZE
–Temporarily deactivate the wake up timer.
ª
TIMER ON / OFF
–Turns on / off timer function.
º
NATURAL
–Selects flat sound effect.
⁄
DISPLAY
–Displays the album and title name for MP3/
WMA disc.
PROGRAM
–CD: star ts or confirms tracks programming.
–TUNER: star ts *automatic / manual preset
programming.
–CLOCK: selects 12- or 24-hour clock display.
‹
SHUFFLE
–Turns on / off random play mode.
›
B
–Switches to Eco Power standby mode.
–*Switches to standby mode.
24 
						

							1-10
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.
Radio reception is poor.
“NO DISC” is displayed or the disc
cannot be played.
The system does not react when buttons
are pressed.
Recording or playback cannot be made.
The tape deck door cannot open.
Sound cannot be heard or is of poor
quality.
The remote control does not function
properly.
The timer is not working.
The system displays features
automatically and buttons start flashing.
If the signal is too weak, adjust the antenna or
connect an external antenna for better
reception.

Increase the distance between the system and
your TV or  VCR.

Inser t a disc.

Load in the disc with label facing up.

Replace or clean the disc, see “Care and safety
information”.

Use a finalised CD-R(W) or a correct format
disc.

Remove and reconnect the AC power cord and
switch on the system again.

Use only NORMAL (IEC I) tape.

Apply a piece of adhesive tape over the missing
tab space.

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 that the AC power cord is connected
properly.

Select the source (CD or TUNER, for example)
before pressing the function button (ÉÅ,
S,T).

Reduce the distance between the remote
control and the system.

Replace the battery.

Point the remote control directly toward the IR
sensor.

Set the clock correctly.

Press TIMER ON / OFF to switch on the timer.

If recording is in progress, stop the recording.

Press and hold DEMO STOP on the main unit
to switch off the demonstration mode.
Problem
Solution
Troubleshooting