Philips MCM298/37 User manual
MCM298/37/55
©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 0629 Service Audio Printed in The Netherlands Subject to modification
Micro System
Version 1.0
CLASS 1
LASER PRODUCT
©3141 785 31140
TABLE OF CONTENTS
Page
Location of PC Boards & Versions Variation ........................1-2
Specifications .......................................................................1-3
Measurement Setup.............................................................1-4
Service Aids, Safety Instruction, etc...........................1-5 to 1-7
Preparations & Controls ...........................................1-8 to 1-11
Disassembly Instructions & Service positions.........................2
Service Test Program..............................................................3
Set Block Diagram...................................................................4
Set Wiring Diagram .................................................................5
Main Board..............................................................................6
ECO 6 Tuner Board : Systems Non Cenelec ........................7A
Power Board............................................................................8
Display (MCU) Board...............................................................9
Key Boards............................................................................10
Set Mechanical Exploded View & Parts List.......................... 11
1-2
/37 /55
Auxin/CDRin x x
Line Out
Video Out
Surround Out
Subwoofer Out
Digital Out
Digital in
Matrix Surround
RDS/NEWS
Dolby Pro Logic (DPL)
Incredible Surround
Karaoke Features
Voltage Selector
ECO Power Standby (Clock Display Off) x x
ECO6 Tuner Board - Systems Non-Cenelec
ECO6 Tuner Board - Systems Cenelec x x
VERSION VARIATIONS:
Type /Versions: MCM298
Features &
Board in used:
USB Direct
x
xx
/98
x
x
x
x
x
LACATION OF PCBS
1-3
GENERAL:
Mains voltage : 110-127V/220-240VSwitchablefor/55/98
117V ± 10% for /37
220V ± 10% for /61/93
230 ± 10% for /05/12
Mains frequency : 50/60Hz
Power consumption : 30W at 1/8Prated
< 1W at ECO Standby
Clock accuracy : < 4 seconds per day
Dimension centre unit : : 430 x 110 x 290 mm ( L x D x H )
TUNER:
FM
Tuning range : 87.5-108MHz
Grid : 50kHz
100kHz for /37
IF frequency : 10.7MHz ± 25kHz
Aerial input : 75 ohm coaxial
300 ohm click fit for /37
Sensitivity at 26dB S/N : < 22uV
Selectivity at 600kHz bandwidth : > 25dB
Image rejection : > 20dB
Distortion at RF=1mV, dev. 75kHz : < 7%
-3dB Limiting point : < 26dBf
Crosstalk at RF=1mV, dev. 40kHz : > 18dB
AM
Tuning range : 531-1602kHz
530-1700kHzfor/98/37
Grid : 9kHz
10kHz for /98/37
IF frequency : 450kHz ± 1kHz
Aerial input : Frame aerial
Sensitivity at 26dB S/N : < 22uV
Selectivity at 18kHz bandwidth : > 18dB
IF rejection : > 45dB
Image rejection : > 28dB
Distortion at RF=50mV, M=80% : < 5%
AMPLIFIER:
Output power (4 ohm, 1kHz, 10% THD)
L&R : 2x10WRMS
Frequency response within -3dB : 125Hz-16kHz
DSC : Rock, Pop, Jazz, Classic
Incredible Surround : On / Off
Input sensitivity Aux in (at 1kHz) : 500mV at 600 ohm
CD (Audio Disc1) : 0dB track (Trk 35)
Output sensitivity
Headphone output at 32 ohm : 700mV±2dB(Max.vol
.
COMPACT DISC:
Measurement done directly at the connector on the board
.
Output Resistance : < 100 ohm
Output Voltage (0dB, 1kHz) : 0.5Vrms ± 1dB (unloaded)
Channel Unbalance : < 3dB
Channel Separation (1kHz) : > 40dB
Frequency Response (±3dB) : 125Hz-16kHz
Signal to Noise Ratio : > 58dBA
MP3-CD Bit Rate : 8-320kbps
Sampling Frequencies : 8,11.025,12,16,22.05,24,
32,44.1,48kHz
WMA-CD Bit Rate : 64-192kbps
240 ± 10% for /79
Tuner : FM67.5kHz DEV/AM
8
Recording Format : ISO9660 UDF format not
supported
SPECIFICATIONS
1-4
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
L
R
DUT
CD
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=50
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=50
Tuner FM
MEASUREMENT SETUP
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
Cassette:
SBC419 Test cassette CrO2 ................................. 4822 397 30069
SBC420 Test cassette Fe ..................................... 4822 397 30071
MTT150 Dolby level 200nWb/M ............................ 4822 397 30271
Compact Disc:
SBC426/426A Test disc 5 + 5A ............................ 4822 397 30096
SBC442 Audio Burn-in Test disc 1kHz ................. 4822 397 30155
SBC429 Audio Signals disc .................................. 4822 397 30184
Dolby Pro-logic Test Disc ...................................... 4822 395 10216
ESD Equipment:
Anti-static table mat - large 1200x650x1.25mm ... 4822 466 10953
Anti-static table mat - small 600x650x1.25mm ..... 4822 466 10958
Anti-static wristband .............................................. 4822 395 10223
Connector box (1MΩ) ............................................ 4822 320 11307
Extension cable
(to connect wristband to conn. box) .................. 4822 320 11305
Connecting cable
(to connect table mat to conn. box) .................. 4822 320 11306
Earth cable (to connect product to mat or box) .... 4822 320 11308
Complete kit ESD3
(combining all above products) ......................... 4822 320 10671
Wristband tester .................................................... 4822 344 13999
1-5
HANDLING CHIP COMPONENTS
1-6
CLASS 1
LASER PRODUCT
GB
Warning !
Invisible laser radiation when open.
Avoid direct exposure to beam.
S
Varning !
Osynlig laserstrålning när apparaten är öppnad och spärren
är urkopplad. Betrakta ej strålen.
SF
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.
F
"Pour votre sécurité, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne".
GB
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.
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.
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.
NL
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.
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
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
oTo reach at least a solder-temperature of 40
oTo stabilize the adjusted temperature at the solder-tip
oTo 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-part
s
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
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1-9
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1-10
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[dg8adX`$I^bZg ######### hZihi]Zb^cjiZ#
CONTROLS
1-11
CONTROLS AND TROUBLESHOUTING
8dcigdah
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
).
0ÉÅ
¶hiVgihdg^ciZggjeiheaVnWVX`#
!9
¶hidehY^hXeaVnWVX`dgZgVhZhVY^hXegd\gVb#
@BJI:
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#>H>cXgZY^WaZHjggdjcY
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Z[[ZXi#
$9779ncVb^X7Vhh7ddhi
¶Zc]VcXZhi]ZWVhh#
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^CjbZg^X@ZneVY%".
[dg89$BE("89 ######## hZaZXihVigVX`[dgeaVnWVX`
Y^gZXian#
&EGD<G6B
[dg89$BE("89 ######## egd\gVbhigVX`hVcY
gZk^Zlhi]Zegd\gVb#
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¶ijgchdcdgd[[i]ZY^b[jcXi^dc[dgi]ZY^heaVn
hXgZZc#
(HA::E
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)I>B:GDC$D;;
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¶hZihi]Zi^bZg[jcXi^dc#
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£9>HEA6N
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¶eaVnhY^hXigVX`h^cgVcYdbdgYZg#
∞G:E:6I
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8A6HH>8#
IgdjWaZh]ddi^c\
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.
¸/0%*4$ ¹^hY^heaVnZY#
GVY^dgZXZei^dc^heddg#
I]ZhnhiZbYdZhcdigZVXil]ZcWjiidch
VgZegZhhZY#
HdjcYXVccdiWZ]ZVgYdg^hd[eddg
fjVa^in#
I]ZaZ[iVcYg^\]ihdjcYdjiejihVgZ
gZkZghZY#
I]ZgZbdiZXdcigdaYdZhcdi[jcXi^dc
egdeZgan#
I]Zi^bZg^hcdildg`^c\#
I]Z8adX`$I^bZghZii^c\^hZgVhZY#
>chZgiVY^hX#
8]ZX`^[i]ZY^hX^h^chZgiZYjeh^YZYdlc#
LV^ijci^ai]Zbd^hijgZXdcYZchVi^dcVii]ZaZch
]VhXaZVgZY#
GZeaVXZdgXaZVci]ZY^hX!hZZ¸BV^ciZcVcXZ¹#
JhZV[^cVa^hZY89"GLdgVXdggZXiBE("89
[dgbViY^hX#
>[i]Zh^\cVa^hiddlZV`!VY_jhii]ZVciZccVdg
XdccZXiVcZmiZgcVaVciZccV[dgWZiiZg
gZXZei^dc#
>cXgZVhZi]ZY^hiVcXZWZilZZci]ZB^Xgd=^;^
HnhiZbVcYndjgIKdgK8G#
GZbdkZVcYgZXdccZXii]Z68edlZgeaj\VcY
hl^iX]dci]ZhnhiZbV\V^c#
6Y_jhii]ZkdajbZ#
9^hXdccZXii]Z]ZVYe]dcZh#
8]ZX`i]Vii]ZheZV`ZghVgZXdccZXiZY
XdggZXian#
8]ZX`^[i]Zhig^eeZYheZV`Zgl^gZ^hXaVbeZY#
BV`ZhjgZi]ZBE("89lVhgZXdgYZYl^i]^c
('s'*+`WehW^igViZl^i]hVbea^c\[gZfjZcX^Zh
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8]ZX`i]ZheZV`ZgXdccZXi^dchVcYadXVi^dc#
HZaZXii]ZhdjgXZ89dgIJC:G![dgZmVbeaZ
WZ[dgZegZhh^c\i]Z[jcXi^dcWjiidcÉÅ!í!
ë#
GZYjXZi]ZY^hiVcXZWZilZZci]ZgZbdiZ
XdcigdaVcYi]ZhnhiZb#
>chZgii]ZWViiZgnl^i]^ihedaVg^i^Zh
$¶h^\chVa^\cZYVh^cY^XViZY#
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EgZhhI>B:Gidhl^iX]dci]Zi^bZg#
EdlZg]VhWZZc^ciZggjeiZYdgi]ZedlZgXdgY
]VhWZZcY^hXdccZXiZY#GZhZii]ZXadX`$i^bZg#
EgdWaZb Hdaji^dc
2-1 2-1
DISMANTLING INSTRUCTIONS
1) Loosen 4 screws A to remove the Front Panel Ass’y by sliding it
out towards the underside before lifting up as shown in Figure 1.
2) Loosen 7 screws B and 4 screws C to remove the Rear Panel
Ass’y .
- 7 screws on the rear
- 2 screws each on the upside & downside
as shown in Figure 2.
3) Loosen 10 screws D (see Figure 3) to remove the CD Door
Track, then remove Left and Right CD Door.
- 5 screws each on the upper & under side.
Detaching the Control Panel Ass’y from the Front Panel Ass’y
Figure 1
Figure 3
Figure 4
1) Loosen 11 screws E (see Figure 4) to remove the Control
Panel Ass’y .
Figure 2
Dismantling of the Front and Rear Panel assembly
BB
A
CD
E
Detach the speaker stands in the same way as
you do the main unit stand#
To detach the stand from the main unit,
a. As shown, hold down PRESS 4
b. Move out the stand to detach.
1
Detaching the Stands from the Speakers and Main Sets
12
2-2 2-2
Service position A
Service position B
Service position C
DISMANTLING INSTRUCTIONS
Repair Hints & Service Positions
1) DuringrepairitispossibletodisconnecttheTunerBoard
and/or CD Module completely unless the fault is sus-
pected to be in that area. This will not affect the
performance of the rest of the set.
Note: Theflexcables areveryfragile,care shouldbetaken
not to damage them during repair. After repair, be
very sure that the flex cables are inserted properly
intotheflexsocketsbeforeencasing,otherwisefaults
may occurs.
3-1 3-1
Figure 1
Y
N
Y
N
ALBUM+ & PLAY
Button pressed?
Button pressed?
DISPLAY
TEST
Display shows Figure 1
and switch all LEDs on
To hold ALBUM+ &
PROGRAM depressed while
set on standby
Display shows the
ROM version
"Vy--y MTP xx-xx-2006"
(Main menu)
V refers to Version
y--y refers to Software version number of the uProcessor
(counting up from 01 to 99)
xx refers to date number of the production.
ALBUM+ & PLAY
SERVICE TEST PROGRAM
4-1 4-1
SET BLOCK DIAGRAM
SET WIRING DIAGRAM
5-1 5-1
MAIN BOARD
TABLE OF CONTENTS
FTD Display Pin Connection ...........................................6-1
Main PCB - Layout Top View ...........................................6-2
Main PCB - Layout Bottom View .....................................6-3
Main PCB - Circuit Diagram (Audio Part).........................6-4
Main PCB - Circuit Diagram (CD Part).............................6-5
Class D Power PCB - Layout Top View ..........................6-6
6-1 6-1
FTD DISPLAY PIN CONNECTION
6-2 6-2
PCB LAYOUT - MAIN BOARD (TOP VIEW)
PCB LAYOUT - DISPLAY BOARD (BOTTOM VIEW)
6-3 6-3
6-4 6-4
CIRCUIT DIAGRAM - MAIN BOARD
AUDIO PART
This manual suits for next models
1
Table of contents
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