Philips MAS-100/37 User manual

CLASS 1
LASER PRODUCT
COMPACT
DIGITAL AUDIO
ServiceManual
Service
Service
Service
Service
Service
MAS-100/37
TABLE OF CONTENTS Page
Location of pc boards & Version variations................1-2
Technical Specifications .............................................1-3
Measurement setup....................................................1-4
Service Aids, Safety Instruction, etc...........................1-5
Connections & Controls ............................................... 2
Disassembly Instructions & Service positions ..............2
Service Test Programs ..................................................3
Set Block diagram .........................................................4
Set Wiring diagram ........................................................5
Front and Combi Board .................................................6
3CDC-LLC-MCD1........................................................10
Set Mechanical Exploded view & parts list ................. 11
©Copyright 2001 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 0222 Service Audio Printed in The Netherlands Subject to modification
GB
3140 785 32110
Mini System

1-2
LOCATION OF PC BOARDS
COMBI BOARD
FRONT
BOARD
CDBOARD

1-3
SPECIFICATIONS
GENERAL:
Mains voltage : 120V for /37
Mains frequency : 60Hz
Power consumption : < 11W at Standby
25W Active
Clock accuracy : < 4 seconds per day
Dimension centre unit : 265 x 310 x 330mm
TUNER:
FM
Tuning range : 87.5-108MHz
IF frequency : 10.7MHz ±20kHz
Aerial input : 300Ω
Sensitivity at 26dB S/N : < 7µV
Selectivity at 600kHz bandwidth : > 25dB
Image rejection : > 25dB
Distortion at RF=1mV, dev. 75kHz : < 3%
-3dB Limiting point : < 8µV
Crosstalk at RF=1mV, dev. 40kHz : > 18dB
MW
Tuning range : 530-1700kHz
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 1) :2x 5W ±1dB
Frequency response within -3dB : 50Hz-15kHz
Dynamic Bass Boost : DBB ON, DBB Off 2)
Digital Sound Control : Jazz, Techno, Optimal, Rock 2)
Headphone output at 32Ω:900mV ±1dB (max Vol.)
CASSETTE RECORDER:
Number of track : 2 x 2 stereo
Tape speed : 4.76 cm/sec +2.5/-1.5%
Wow and flutter : < 0.35% DIN
Fast-wind/rewind time C60 : 130 sec
Bias system : 75kHz ±5kHz
Rec/Pb frequency response within 8dB : 80Hz - 10kHz
Signal to noise ratio : > 48dBA
COMPACT DISC:
Measurement done at output conn. of the CDC module.
Frequency response within ±1.5dB: 20Hz - 20kHz
Output level (in Vrms) : 550mV, Zout = 100Ω
Signal/Noise ratio (A-weighted) : > 80dBA
Distortion at 1kHz : < 0.003%
Channel unbalance at 1kHz : ±1dB
Channel separation at 1kHz : > 60dB
De-emphasis : 0 or 15/50 mS (Switched by subcode
on the disc)
1) 8 Ω, 1 kHz, 10% THD
2) Frequency response in each setting is software controlled.

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 meter

e.g. Sound Technology ST1700B
L
R
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
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=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
1-4

1-5
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
HANDLING CHIP COMPONENTS

1-6
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.
“Pour votre sécurité, ces documents
doivent être utilisés par des spécia-
listesagréés,seulshabilitésàréparer
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.
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.
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."
CLASS 1
LASER PRODUCT
3122 110 03420
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.

MINI HIFI STEREO SYSTEM
CD / CD-R/
CD-RW COMP AT IBLE
DECK 1 DECK 2
FULL AUTO STOP
PLAYBACK•RECORD
3 CD DIRECT PLAY
PLAYBACK
CONTINUOUS PLAY
1
2
4
3
5
6
7
8
9
0!
#
@
$
%
^
&
*
ST ANDBY-ON
OPEN•CLOSE
CD
DISC
CHANGE DIGITAL SOUND
CONTROL
DSC
DYNAMIC
BASS BOOST
TUNER TAPE
CD 1 CD 2 CD 3
SEARCH /
TUNING
SEARCH /
TUNING
DEMO STOP
FM•AM TAPE 1•2
▲
PREV•PRESET
▲
NEXT•PRESET
MASTER VOLUME
CLOCK •TIMERPROGRAM DIM
3CD
CHANGER
2
4
(
3
%
^
7
8
™
¡
%
£
2
)
#
Controls
Controls on the system and
remote control
1
STANDBY ON y
–to switch the system on or to standby mode.
2 TA PE (TAPE 1/2)
–to select tape mode.
3 TUNER (FM•AM)
– to select waveband : FM or AM.
4 CD 1 / CD 2 / CD 3 (CD 1/2/3)
–to select disc tray 1, 2 or 3.
5 CD OPEN/CLOSE
–to open or close the disc tra y.
6 DISC CHANGE
– to change disc(s).
7 DIGITAL SOUND CONTROL (DSC)
–to select the desired sound effect :
JAZZ, ROCK, TECHNO or OPTIMAL.
8 DYNAMIC BASS BOOST (DBB)
–to select the desired bass boost level.
9 PROGRAM
for CD .................to program disc tracks.
for Tuner .............to program preset radio stations.
for Clock ............to select 12- or 24-hour clock
mode.
for Timer .............to select CD program mode as
the wake up source.
0 Ta pe deck 1 operation
â.......................... to start recording.
É.......................... to star t playback.
à/ á............... to rewind or fast forward.
70 ........................ to stop playback/recording or to
open the tape door.
Å.......................... to interrupt playback or
recording.
! Ta pe deck 2 operation
É.......................... to star t playback.
à/ á............... to rewind or fast forward.
70 ........................ to stop playback or to open the
tape door.
Å.......................... to interrupt playback.
@ CLOCK•TIMER
–to view the clock, set the clock or set the timer.
# DIM
– to select different brightness for the display
screen: DIM 1, DIM 2, DIM 3 or DIM OFF.
$ n
–to connect headphones.
% MASTER VOLUME 3 4 (VOL +/-)
– to increase or decrease the volume.
^ Mode Selection
PLAY•PAUSE ÉÅ
for CD ................. to star t or interrupt playback.
for Plug & Play…(on the system only) to initiate
and star t plug
& play mode
.
SEARCH/TUNING àá
for CD ................. to search backward/forward.
for Tuner ............. to tune to a lower or higher
radio frequency .
for Clock ............(on the system only) to set the
hour.
STOP•CLEAR / DEMO STOP Ç
for CD ................. to stop playback or to clear a
program.
for Tuner .............(on the system only) to stop
programming or to erase
a
selected preset.
for Demo ...........(on the system only) to activate/
deactivate the demonstration.
for Clock ............(on the system only) to exit clock
setting or cancel timer.
for Plug & Play… (on the system only) to exit plug
& play mode.
PREV í/ NEXT ë(PRESET 4/ 3)
for CD .................to skip to the beginning of the
current, previous, or next track.
for Tuner .............to select a preset radio station.
for Clock ............(on the system only) to set the
minute.
& Display screen
–to view the current status of the system.
* Disc tray
( REPEAT
– to playback track(s)/disc(s)/program repeatedly.
) MUTE
–to interrupt or resume sound reproduction.
¡ SHUFFLE
–to playback all available discs and their tracks/
program in random order.
™ SLEEP
– to activate/deactivate or set the sleep timer.
£ B
–to switch the system to standby mode.
CONNECTION AND CONTROLS
2-1 2-1

Preparations
R
+
–
L
speaker
(right) speaker
(left)
FM wire antenna
AM loop
antenna
A
B
C
+–
AC power cord
Rear connections
The type plate is located at the rear of the
system.
A Po we r
Before connecting the AC power cord to the
wall outlet, ensure that all other connections
have been made .
WARNING!
–For optimal performance,use only the
original power cable.
–Never make or change any connections
with the power switched on.
B Antennas Connection
Connect the supplied AM loop antenna and FM
antenna to the respective terminals. Adjust the
position of the antenna for optimal reception.
AM Antenna
Fix the claw
to the slot
●Position the antenna as far as possible from a TV,
VCR or other radiation source
English
Preparations
FM Antenna
1
2
●For better FM stereo reception, connect an
outdoor FM antenna to the FM AERIAL (FM
ANTENNA) ter minal.
C Speakers Connection
FrontSpeakers
Connect the speaker wires to the SPEAKERS
terminals, right speaker to "R" and left speaker to
"L", colored (marked) wire to "
+
" and black
(unmarked) wire to "
-
".
1
2
●Fully insert the stripped por tion of the speaker
wire into the terminal as shown.
Notes:
–For optimal sound performance , use the
supplied speakers .
– Do not connect more than one speaker to any
one pair of
+ / - speaker terminals .
–Do not connect speakers with an impedance
lower than the speak ers supplied. Please refer to
the SPECIFICATIONS section of this manual.
Inserting batteries into the
remote control
Inser t two batteries type R03 or AAA (not
supplied) into the remote control with the
correct polarity as indicated by the " +" and
"-" symbols inside the battery compar tment.
CAUTION!
–Remove batteries if they are exhausted
or will not be used for a long time.
–Do not use old and new or different
types of batteries in combination.
– Batteries contain chemical substances , so
they should be disposed off properly.
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 1/2/3,
TUNER).
–Then select the desired function (for
example
É , í , ë ).
For more information on operation instruction please visit Philips
Audio internet site :
http://www.audio.philips.com

2-2
2-2

2-3
DISMANTLING INSTRUCTIONS
1) Loosenthe4screws,slideCovertop(pos30)towardsthe
rear and remove it upwards.
2) Loosen3screwsslidethePanelright(pos26)towardsthe
rearandremoveitoutwards. DolikewiseforthePanelleft
(pos 27).
3) Push the gear slowly towards the front as shown in figure
Dismantling the 3CDC Module
3untiltheCDCtraystartstomoveoutoftheFrontCabinet
(pos8). TheCDCtrayisnowdisengageandcanbepulled
out completely.
4) Remove the Cover Tray (pos 29) as shown in figure 2.
5) Loosen4screwsAtoremovetheCDCModule(pos28)as
shown in figure 1.
A
A
A
Turn the Gear towards the Front
till the CDC Tray starts to open
Figure 1
C1
Press Inwards
Pull Rear
Panel out
1
2
Figure 3
Dismantling of the Panel Rear
1) Loosen 6 screws C on the Panel rear (pos 24).
2) Press the 2 catches C1 inwards and dismantle the Panel
rear by pulling it towards the rear.
Figure 2
2-3

2-4 2-4
Service pos A
Service pos B
Note: After re-assembly, it is very important to ensure the
wires from the Tape mechanism are routed properly
to ensure that they do not touch/obstruct all moving
parts.
Dismantling of the Front Panel and Bottom Panel assembly
Figure 4 Figure 5
Figure 6
1) Remove 9 screws D mounting the Front board.
2) Remove 1 screw E supporting the bracket, Combi board
(pos 33) to the Panel front (pos 8).
3) Remove 1 screw F (see figure 3) mounting the Mains
transformer body to the Panel Bottom (pos 25).
Note: Care must be taken not to damage the board
because of the heavy Mains transformer.
4) The Front and Combi boards together with the Mains
transformer can now be remove.
5) Loosen 6 screws G and eject both cassette doors to
remove the Tape mechanism (pos 12).
Note: During re-assembly of the Tape mechanism
and Front board care must be taken to ensure
the wires are properly dressed and not touch-
ing any moving parts on the Tape mechanism.