Philips AZ 1009 User manual

Published by MS 9741 Service Audio Printed in The Netherlands Subject to modification
chapter
Technical Specification................................................2-1
Measurement setup.....................................................2-2
Controls & Connections...............................................2-3
Brief Operating Instructions....................................2-4 to 2-7
Warnings & Safety.......................................................2-8
Dismantling Instructions..........................................3-1 to 3-3
Service hints...........................................................3-4 to 3-6
CD - startup procedure ................................................3-7
Abbreviations CD-ICs ..................................................3-8
Service Test Program.................................................3-10
BLOCK DIAGRAM.......................................................4-1
WIRING DIAGRAM......................................................5-1
TUNER BOARD
schematic diagram ..................................................6-1
component layout....................................................6-2
adjustment table......................................................6-2
chapter
FRONT BOARD
component layout .................................................7-1
schematic diagram .................................................7-2
COMBI BOARD
component layout ................................................7-1, 7-4
schematic diagram CD part.....................................7-2
Recorder/Amplifier part............7-3
EXPLODED VIEWS
apparatus, drawing 1...............................................8-1
apparatus, drawing 2...............................................8-2
tape transport ..........................................................8-3
MECHANICAL PARTSLIST see Exploded views
ELECTRICAL PARTSLIST.........................................9-1 ff
TABLE OF CONTENTS
CS 49 101
AZ1009/00/05/17
©4822 725 26015
CD Stereo Radio Recorder
CD SYNCHRO START RECORDING
PAUSE STOP.OPEN
SEARCH
PLAY
RECORD
OPEN
CD SYNCHRO START RECORDING
OPEN
PAUSE STOP.OPEN
SEARCH
PLAY
RECORD
1700
TUNING
FMAM
1300
1000
800
630
530
108
104
104
90
92
88
1700
TUNING
FMAM
1300
1000
800
630
530
108
104
104
90
92
88
VOLUME
DBB
DYNAMIC
BASS
BOOST
VOLUME
DBB
DYNAMIC
BASS
BOOST
CD MODE
BASS REFLEX SPEAKER SYSTEM
CD MODE
BASS REFLEX SPEAKER SYSTEM
CLASS 1
LASER PRODUCT
AZ1010/00/01/04/05/10
/11/11H/14/17
©Copyright 1997 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.
Service Manual
xystus

TECHNICAL SPECIFICATION
General:
Mains voltage : 220V-230V / 50Hz for /00 /04 /14
230V-240V / 50Hz for /05 /10
110V-127V / 220V-240V /50Hz switchable for /01 /11 /11H
120V / 60Hz for /17
Battery : 9V ( 6xR20 )
Power consumption : ≤15W at maximum output power, ( ≤11W at 1/8 Pmax )
≤5W (typ. 2W) with source switch in tape/off
Amplifier:
Power stage protection : temperature and shortcircuit
Output power mains : 2 x 1,4Wrms -1dB at 4ΩD=10%
battery : 2 x 2Wrms -1dB at 4ΩD=10%
Headphone : 3,5mm stereo jack, ≥20mW at 32Ω(≡0,8V at 32Ω) D=10%
Frequency response : 30Hz - 16kHz ( typ. at volume set to -20dB, CD mode 0dB signal level ⇒use SBC429 )
Tone control DBB : +12dB ±3dB at 100Hz ( volume set to -20dB )
Tuner:
FM MW
Tuning range 87,5 - 108 MHz 522 - 1607 kHz
(520 - 1730 kHz for /17)
IF 10,7 MHz ± 20 kHz 468 kHz ± 3 kHz
Sensitivity Mono: 26dB S/N, m=30% ≤4 µV ( ≤2µV typ.) ≤4mV/m (≤1,5mV/m typ.)
-3 dB limiting point ≤5 µV ( ≤2µV typ.)
AFC capture range ±300kHz typ.
Distortion ≤7% (≤1% typ.) ≤7% (≤2,5% typ.)
RF=1mV ∆f=75kHz RF=100mV/m m=80%
Image rejection ratio ≥20dB (26dB typ.) ≥28dB
Channel separation at 1kHz ≥20dB (25dB typ.)
CD: To be measured on phone socket with 100kΩload.
Frequency response : 30 - 16.000 Hz -4dB
Signal/Noise ratio : ≥60dB
Distortion : 0.2% typ. at 1 kHz
Channel difference : ≤3dB at 1 kHz
Channel crosstalk : 40dB typ.
De emphasis : 0 or 15/50µs switched automatically by subcode on the disc
Laser
Output power : 500µW
Wave length : 780 ± 20 nm
Recorder: To be measured on phone socket with 100kΩload.
Tape speed : 4,76cm/s ±3%
Wow & Flutter : ≤0,5% weighted
Winding speed : 120s for C60 cassette
Erase / Bias system : permanent magnetic erase head / AC 65 ±5kHz
Distortion at 250 nWb/m : ≤7%
Signal/Noise ratio (FF weighted) :≥40dB
(A - weighted) :≥43dB
Channel difference at PB : ≤5dB
Channel difference overall : ≤5dB
Channel separation : ≥15dB at 1kHz
Track separation : ≥55dB at 1kHz
Frequency response IEC I
Pb : 125Hz - 8000Hz (within 8dB)
overall : 250Hz - 6300Hz (within 8dB)
note: set is not prepared to play or record IEC II Chrome cassettes!
2-1
CS 49 102

2-2
CS 49 103
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
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
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
DUT
CD
Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)
MEASUREMENT SETUP
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
DUT
RECORDER
Use Universal Test Cassette Fe SBC420 4822 397 30071
LF Generator
e.g. PM5110

2-3
CS 49 104
CONNECTIONS & CONTROLS
VOLUME
DBB
DYNAMIC
BASS
BOOST
CD SYNCHRO START RECORDING
PAUSE STOP.OPEN
SEARCH
PLAY
RECORD
OPEN
FM AM
1700
1300
1000
800
630
530
TUNING
108
104
104
90
92
88
CD MODE
BASS REFLEX SPEAKER SYSTEM
4
7
8
5
6
1
3 2
BASIC FUNCTIONS
1POWER:
CD, TAPE, BAND ....selects the sound source
2DBB.......................enhances the bass
3VOLUME...............adjusts the volume level
4p...........................3.5mm headphone socket (back of the set)
Note: Connecting the headphones will switch off the speakers.
5CASSETTE RECORDER
PAUSE ;...............interrupts recording or playback
STOP·OPEN 9 / ..stops the tape and opens the cassette compartment
SEARCH 6...........rewinds the tape
SEARCH 5...........fast forwards the tape
PLAY 1.................starts playback
RECORD 0............starts recording
RADIO
6TUNING................tunes to radio stations
1BAND: FM, MW...selects the wave band
7CD PLAYER
/OPEN................opens the CD compartment
9...........................stops CD play and erases the program
2;.........................starts and interrupts CD play
§.........................skips and searches forward
∞.........................skips and searches backward
CD MODE..............selects the different CD playing modes and programs
tracks
8Display

2-4
CS 49 105
POWER SUPPLY
5
Open the battery compartment of the set and insert 6 batteries, type R20, UM-1 or D-cells (preferably alkaline). Remove batteries if they are flat or if the set is not going to be used for a long time.
Batteries contain chemical substances, so they should be
disposed of properly.
1Check whether the mains voltage as shown on the type plate
corresponds to your local mains voltage. If it does not, consult your dealer or service organisation.
The type plate is located
on the bottom of the set.
2If the set is equipped with a VOLTAGE selector A, set this
selector to the local mains voltage.
3Connect the mains cable to the AC MAINS socket and the wall
socket. This switches on the mains supply.
The mains cable is
inside the battery compartment.
The battery supply will be switched off when the set is connected to the mains. To change over to battery supply, pull out the plug from the unit’s AC MAINSsocket. To disconnect the set from the mains completely, remove the mains plug from the wall socket. For users in the U.K.: please follow the instructions on page 2.
A
Mains Batteries (optional)
English
Environmental information All redundant packing material has been omitted. We have done our utmost to make the packaging easily separable into three mono materials: cardboard (box), polystyrene foam (buffer) and polyethylene (bags, protective foam sheet). Your set consists of materials which can be recycled if disassembled by a specialized company.
Please observe the local regulations regarding the disposal of packing materials, exhausted
batteries and old equipment.
6
English
Set the POWER slider to the desired sound source: CD, TAPE, or BAND (for radio). The set is switched off when the POWER slider is set to OOFFFF/TAPE
and the keys of the tape deck are released.
Note: If you use batteries, switch the set off after use. This will
avoid unnecessary power consumption.
Adjust the volume using the VOLUME control. Increase and decrease the bass level by pressing DBB. The bass level can also be emphasised if you place the set against wall or shelf. Do not cover any vents; leave sufficient room around the unit for ventilation. 1Set the POWER slider to FM or MW to select the desired
wave band.
2Tune to the desired radio station by using the TUNING wheel. Improving RADIO reception For FM stations, pull out the telescopic antenna. To improve the signal, incline and turn the antenna. Reduce its length if the signal is too strong (very close to a transmitter). For MW stations, direct the built-in antenna by turning the whole set. The telescopic antenna is not needed.
OPEN
FM AM
1700
1300
1000
800
630
100
98
97
104
108
HRO START RECORDING
Radio – tuning to radio stations
POWER
DBB
DYNAMIC
BASS
BOOST
VOLUME
CD SYNCHRO STA
R
Adjusting volume and sound
OFF BAND
TAPE
CD FM
AM
POWER
DBB
DYNAMIC
BASS
BOOST
CD SYNCHRO STA
R
Switching the set on and off
BASIC FUNCTIONS RADIO
INSTRUCTION FOR USE

2-5
CS 49 106
CD PLAYER
7
English
1Set the POWER slider to CD. 2Press /OPEN to open the CD compartment. 3Insert an audio CD (printed side up) and close the CD
compartment. ™The CD player starts and scans the contents list of the CD.
Then, the CD player stops. Display indication: the total number of tracks.
4Press the 2; button to start CD play.
™Display indication: the current track number.
5Press the 9button to stop CD play.
™Display indication: the total number of tracks.
You can interrupt CD play by pressing 2;. Continue CD play by
pressing the button again.
™Display indication: the current track number (flashing).
Note: CD play will also stop if:
– you open the CD compartment,
– the end of the CD is reached, or
– you move the
POWER
slider.
If you make a mistake when operating the CD player, or if the CD player cannot read the CD, the display shows Eor no. (See ”TROUBLESHOOTING”.) If you press 2; and there is no CD inserted, the display
shows no.
CD MODE
E
C
ORD
SEARC
H
PLA
Y
RECORD
OPEN
Playing a CD
CD PLAYER 8
English
Selecting another track Briefly press the ∞or §button once/several times to skip to the beginning of the current, previous or subsequent track(s). During CD play:
CD play continues automatically with the selected track.
When CD play is stopped:
Press 2; to start CD play. ™Display indication: the selected track number.
Searching for a passage during CD play 1Hold down the ∞or §button to find a particular passage in a
forward or backward direction. ™CD play continues at a low volume.
2Release the button when you have reached the desired passage.
Note: In the different CD modes or when playing a program, searching
is only possible within the particular track.
1During CD play press CD MODE repeatedly to cause the display
to show the different playing modes. ™SHUFFLE: All tracks of the CD (or program) are played in
random order.
™SHUFFLE REPEAT ALL: All tracks of the CD (or program) are
played repeatedly in random order.
™REPEAT: The current track is played repeatedly.
™REPEAT ALL: The entire CD (or program) is played repeatedly.
2After 2 seconds of flashing display indication, CD play starts in
the chosen mode.
3To return to normal CD play, press CD MODE until the display
indication disappears.
SHUFFLE
REPEAT ALL
CD MODE
CD MODE: Shuffle and Repeat
CD MODE
Search backward ∞and forward §
INSTRUCTION FOR USE

2-6
CS 49 107
CD PLAYER
9
You can select a number of tracks and store these in the memory
in the desired sequence. You can store any track more than once. A maximum of 20 tracks can be stored in the memory. 1When CD play is stopped, select the desired track with ∞or
§.
2As soon as the number of the desired track is displayed, press
CD MODE to store the track in the memory. ™PROGRAM appears on the display. Plights up briefly, then the
number of the stored track is shown.
3Select and store all desired tracks in this way. 4You can review your settings by pressing and holding CD MODE
for more than 1 second. ™The display shows all stored track numbers in sequence.
If you try to store more than 20 tracks, the display shows F.
Press 2; to play the program. From the stop position, press 9.
™no lights up briefly, PROGRAM disappears and your program
is erased.
Note: The program will also be erased if you:
– interrupt the power supply,
– open the CD compartment, or
– move the
POWER
slider.
PROGRAM
Erasing the program
PROGRAM
Playing the program
PROGRAM PROGRAM
CD MODE
CD MODE: Programming track numbers
English
CASSETTE RECORDER 10
English
1Set the POWER slider to TAPE. 2Press STOP·OPEN 9 / to open the cassette compartment.
3Insert a recorded cassette with the open side upwards and close
the cassette compartment.
4Press PLAY 1to start playback.
5Press 6or 5to rewind or fast forward the tape.
6To stop the tape press STOP·OPEN 9 /.
Note: The keys are released at the end of the tape. Recording is permissible insofar as copyright or other rights of third parties are not infringed upon. For recording on this set you should use a cassette of the type
NORMAL (IEC type I). This deck is not suitable for recording on
cassettes of the type CHROME (IEC type II) or METAL (IEC
type IV). The recording level is set automatically. The controls VOLUME and
DBB do not affect the recording.
At the very beginning and end of the tape, no recording will take place in the 7 seconds during which the leader tape passes the recorder heads. Protecting tapes from accidental erasure
Keep the cassette side to be protected in front of you and snap off the left tab. Now, recording on this side is no longer possible.
To record again on this side of the cassette, cover the opening with a piece of adhesive tape.
General information on recording
PAUSE
STOP•REC
ORD
SEARC
H
PLA
Y
RECORD
OPEN
C
D SYNCHRO START RECORDING
Playing a cassette
INSTRUCTION FOR USE

2-7
CS 49 108
CASSETTE RECORDER
11
1Set the POWER slider to CD. 2Insert a CD and, if desired, program the track numbers.
3Press STOP·OPEN 9 / to open the cassette compartment.
4Insert a blank, unprotected, cassette and close the cassette
compartment.
5Press RECORD 0to start recording.
™Playing of the CD or program starts automatically.
6For brief interruptions press PAUSE ;. Press the PAUSE ;key
again to resume recording.
7To stop recording, press STOP·OPEN 9 /.
Note: the recording can be started from different positions:
– if the CD player is in pause mode, recording will start
from this very position (use
∞
or
§
);
– if the CD player is in stop mode, recording will start from
the beginning of the CD or program.
1Tune to the desired radio station (see ”RADIO”). 2Press STOP·OPEN 9 / to open the cassette compartment.
3Insert a blank, unprotected, cassette and close the cassette
compartment.
4Press RECORD 0to start recording.
5For brief interruptions press PAUSE ;. To resume recording press
the PAUSE ;key again.
6To stop recording, press STOP·OPEN 9 /.
Recording from the radio
PAUSE
STOP•REC
ORD
SEARC
H
PLA
Y
RECORD
OPEN
C
D SYNCHRO START RECORDING
Recording from the CD player – CD synchro start
English
TROUBLESHOOTING
13
Problem Possible cause Solution No sound, VOLUME is not adjusted. Adjust volume. no power Headphones are connected. Disconnect headphones.
Mains cable is not securely connected. Connect mains cable properly. Batteries are flat. Insert fresh batteries. Batteries are inserted incorrectly. Insert batteries correctly.
Trying to change over from mains to Remove the mains plug from the
battery supply without removing the plug. unit’s AC MAINS socket.
No reaction to Electrostatic discharge. Disconnect the set from power supply,
operation of any keys reconnect after a few seconds. Poor radio reception Weak radio signal. Direct the antenna for optimum
reception.
Interference caused by electrical equipment Keep the radio away from electrical
like TVs, computers, engines, etc. equipment.
no or Eindication The CD is badly scratched or dirty. Replace or clean the CD.
No CD is inserted. Insert a CD. The CD is inserted upside down. Insert CD with label facing up. The laser lens is steamed up. Wait until the lens has cleared.
The CD skips tracks The CD is damaged or dirty. Replace or clean the CD.
SHUFFLE or PROGRAM is active. Switch off SHUFFLE or PROGRAM.
Poor cassette Dust and dirt on the heads, capstans or Clean heads, capstans, and pressure
sound quality pressure rollers. rollers.
Use of unsuitable cassette types Only use NORMAL type cassettes for
(METAL or CHROME) for recording. recording.
Recording does Cassette tab(s) may be snapped off. Apply a piece of adhesive tape over not work the opening.
English
WARNING Under no circumstance should you try to
repair the set yourself as this will
invalidate the guarantee.
If a fault occurs, first check the points listed below before taking the set for repair. If you are unable to solve a problem by following these hints, consult your dealer or service center.
INSTRUCTION FOR USE

2-8
CS 49 109
© WARNING
All ICs and many other semiconductors 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 wristband with
resistance. Keep components and tools at this potential.
f ATTENTION
Tous les IC et beaucoup d´autres semi-conducteurs sont
sensibles aux décharges statiques (ESD). Leur longévite
pourrait être considérablement écourtée par le fait qu´aucune
précaution nést prise à leur manipulation.
Lors de réparations, s´assurer de bien être relié au même
potentiel que la masse de l´appareil et enfileer 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.
d WARNUNG
Alle ICs und viele andere Halbleiter sind empfindlich
gegenüber elektrostatischen Entladungen (ESD).
Unsorgfältige Behandlung im Reparaturfall kann die
Lebensdauer drastisch reduzieren.
Sorgen Sie dafür, daß sie im Reparaturfall über ein Puls-
armband mit Widerstand mit dem Massepotential des
Gerätes verbunden sind.
Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem
Potential.
ñ WAARSCHUWING
Alle IC´s en vele andere halfgeleiders zijn gevoelig voor
electrostatische ontladingen (ESD).
Onzorgvuldig behandelen tijdens reparatie kan de levensduur
drastisch doen vermindern. 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 riparationi occorre quindi essere
collegato allo stesso potenziale che quello della massa
delápparecchio tramite un braccialetto a resistenza.
Assicurarsi che i componenti e anche gli utensili con quali si
lavora siano anche a questo potenziale.
©
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
i
Le norme di sicurezza estigono che l´apparecchio venga
rimesso nelle condizioni originali e che siano utilizzati i
pezzi di ricambiago identici a quelli specificati.
Componenty di sicurezza sono marcati con
ñ
Veiligheidsbepalingen vereisen, dat het apparaat in zijn
oorspronkeliijke toestand wordt teruggebracht en dat
onderdelen, identiek aan de gespecificeerde, worden toegepast.
De Veiligheidsonderdelen zijn aangeduid met het symbool
sVarning !
Osynlig laserstrålning när apparaten är öppnad och
spärren är urkopplad. Betrakta ej strålen.
∂Advarsel !
Usynlig laserstråling ved åbning når sikkerhedsafbrydere
er ude af funktion. Undgå udsaettelse for stråling.
ßVaroitus !
Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen !
f
"Pour votre sécurite, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne".
ESD
SAFETY
d
Bei jeder Reparatur sind die geltenden Sicherheitsvor-
schriften zu beachten. Der Originalzustand des Gerätes
darf nicht verändert werden. Für Reparaturen sind Original-
ersatzteile zu verwenden.
Sicherheitsbauteile sind durch das Symbol markiert.
f
Les normes de sécurité exigent que l`appareil soit remis
à l`état d`origine et que soient utilisées les pièces de
rechange identiques à celles spécifiées.
Les composants de sécurité sont marqués
CLASS 1
LASER PRODUCT
© DANGER: Invisible laser radiation when open.
©
After servicing and before returning the set to customer
perform a leakage current measurement test from all
exposed metal parts to earth ground, to assure no
shock hazard exists.
The leakage current must not exceed 0.5mA.
AVOID DIRECT EXPOSURE TO BEAM.
© AVAILABLE ESD PROTECTION EQUIPMENT :
anti-static table mat large 1200x650x1.25mm 4822 466 10953
small 600x650x1.25mm 4822 466 10958
anti-static wristband 4822 395 10223
connection box (3 press stud connections, 1MΩ) 4822 320 11307
extendible cable (2m, 2MΩ, to connect wristband to connection box) 4822 320 11305
connecting cable (3m, 2MΩ, to connect table mat to connection box) 4822 320 11306
earth cable (1MΩ, to connect any product to mat or to connection box) 4822 320 11308
KIT ESD3 (combining all 6 prior products - small table mat) 4822 310 10671
wristband tester 4822 344 13999
WARNINGS & SAFETY

3-1
CS 49 110
DISMANTLING INSTRUCTIONS
Dismantling of the Cassette Door
•Open cassette door.
• Release left catch by pressing it inwards with a screwdriver
as shown in picture 1.
• Pull door on left side up as shown in picture 2.
• Right catch will now be released automatically.
picture 1
picture 2
Dismantling of the CD Door
•Open CD door.
• Release left catch by pressing it inwards with a screwdriver
as shown in picture 3.
• Pull door on left side up as shown in picture 4.
• Right catch will now be released automatically.
picture 3
picture 4

3-2
CS 49 111
picture 5
picture 6
picture 7
•Loosen 6 screws as shown in
picture 5.
• Remove handle by pulling it
backwards.
• Pull volume knob off.
• Pull Top cabinet on rear side up first.
• Move it backwards to release lugs on front
side.
• Pull Top cabinet up.
Attention: Take care of flex wire to CD drive!
• Put top cabinet in rest position as shown in
picture 7.
DISMANTLING INSTRUCTIONS
Dismantling the Top Cabinet

3-3
CS 49 112
•Loosen 9 screws as shown in picture 10.
• Plug cables to front-board, tape transport and transformer off.
• Pull front- and rear cabinet apart.
DISMANTLING INSTRUCTIONS
Separation Front - Rear Cabinet
•Dismantle top cabinet as described page before.
• Remove cassette door as described in chapter 3-1.
• Loosen 4 screws as shown in picture 8.
• Put ornamental cover away.
• Fetch tape transport through cassette compartment out as
shown in picture 9.
For service position see chapter
SERVICE HINTS.
Dismantling of the Tape Transport
picture 9
picture 10
picture 11
picture 8

3-4
CS 49 113
SERVICE HINTS
SERVICE TOOLS
TORX T10 screwdriver with shaftlength 150mm ......................................4822 395 50423
TORX screwdriver set SBC 163..............................................................4822 295 50145
Audio signal disc SBC 429......................................................................4822 397 30184
Playability test disc SBC444...................................................................4822 397 30245
Test disc 5 (disc without errors) +
Test disc 5A (disc with dropout errors, black spots and fingerprints)
SBC 426/426A ....................................................................4822 397 30096
Burn in test disc (65 min. 1kHz signal at -30dB level without "pause")...4822 397 30155
Universal test cassette Fe SBC 420 ...................................................... 4822 397 30071
HANDLING CHIP COMPONENTS

3-5
CS 49 114
SERVICE HINTS
General Service position
picture 12
For repairs on: CD failures
Rec/Pb-amplifier
Power-amplifier
Power supply
Tuner Board
Service position Tape Transport
picture 13
For repairs on the Tape Transport or for
adjustment of the tape speed:
•Dismantle tape transport as described in
chapter 3-3.
• Fix tape transport on cabinet with one
screw as shown in picture 13.
• Connect cables on Combi Board again.

• Remove casstte door as described in chapter 3-1.
• Insert testcassette SBC420 (4822 397 30071)
directly into cassette compartment and play
10kHz part.
• Adjust right hand screw for max. output and
left channel = right channel.
3-6
CS 49 115
SERVICE HINTS
Alignment of AZIMUTH
picture 14
Details wire routing of mains transformer
picture 15
Wire routing has to be carried out as shown in picture
15 in order to:
•f
ulfil safety requirements and
• obtain tight speaker boxes

3-7
CS 49 116
N
Y
N
N
N
N
N
Y
CD switched on
(mode switch)
+A(CD)
supplied to
CD part?
Decoder delivers CLOCK -
frequ. 4.23MHz to µP.
µP-
RESET line → high
µP init. Decoder 7801.
inner switch
closed? 4s time-out over?
0,2s time-out over?
inner switch open?
Laser on
Disc motor 100ms on
FOCUS search on
focus found? 3s time-out over?
N
startup proc.
stopped,
display shows
µP initializes Decoder
and Servo IC:
-start turntable
-adj. track bal. and gain
-read subcode (TOC)
TOC
found?
display shows
max. trackno.
Y
Y
Y Y
N
Y Y
Remark: To check focus servo, slide servo, track servo and turntable
use service test program
- Battery empty?
- check +A,
- mode switch o.k.?
check: - Motor control pin 27 of Decoder 7801 and
Disc Motor driver 7805
- HF Signal by using service testprogram
check: - Laser light on ?
Check pin 38 of 7803 and
LASER CONTROL circuit
- Focus Servo
HIGHLOW
Level on
pin23
(CD-RESET)
after 100µs?
Init. 7801 for ext. DAC Init. 7801 for int. DAC
BEGIN
µP moves slide inside
(4s time-out starts)
µP moves slide outside
(0,2s time-out starts)
STOP MODE STARTUP FAILED
CDstartup EVA, 080997
slide off
N
Y
check: - door switch
Door closed? Display shows
check: - +A(CD), +B(CD), +LASER, +M,
- time constant of reset circuit
- Pin 32 of µP 7800 HIGH ?
- Pin 30 of µP 7800, if 4.23 MHz o.k.
CD STARTUP PROCEDURE

3-8
CS 49 117
SERVO PROCESSOR M62475FP
Pin Name Direction Description
1-3 A, B, C Diode array →Servo processor Current input ( central photo diode signal input )
4-5 E, F Diode array →Servo processor Current input ( satellite photo diode signal input )
6 SGT Servo processor →Track error ampl. input Signal generator output to track servo, sends 1700Hz for adjustment procedure
7 TE - - Inverting input of track error amplifier
8 TEGain - Gain control pin of track error amplifier
9 TG1 - Track Gain 1 - switch: controls the gain of the track servo amplifier
10 TE out - Track Error amplifier output
11 TC/Shock - Track Cross/Shock detector input
12 TS + - Non inverting input of track servo amplifier
13 TG2 not connected Track Gain 2 - switch: controls the gain of the track servo amplifier
14 TS - - Inverting input of track servo amplifier
15 TS out Servo processor →Servo driver Output of track servo amplifier
16 SS + - Non inverting input of slide servo amplifier
17 SS - - Inverting input of slide servo amplifier
18 Slide out Servo processor →Motor driver Output of slide servo amplifier
19 DET.FILTER - Pin for connection of DETection FILter capacitor of
ADJUST LOGIC
20 BIAS Servo processor →external electronic Reference Voltage output Vcc/2 of internal BIAS-generator
21 GND - Ground connection pin ( negative supply )
22 MLA/DIS µP →Servo processor Serial interface Microprocessor LAtch control / DIScharge control for adjustment
23 JP1/SG µP →Servo processor Serial interface Jump control line / Signal Generator input line for adjustment
24 MCK µP →Servo processor Serial interface Clock input line
25 MSD µP →Servo processor Serial interface Data input line
26 Dout Servo processor →µP Serial interface Data output line
27 CLPF - Pin for connection of Low Pass Filter capacitor for
ADJUST LOGIC
28 IREF - Reference current input
29 VCC - Positive supply connection pin ( 4V - 5.5V )
30 FSOUT Servo processor →Servo driver Output of focus servo amplifier
31 FS - - Inverting input of focus servo amplifier
32 FEGain - Gain control pin of focus error amplifier
33 FE - - Inverting input of focus error amplifier
34 SGF Servo processor →Focus error ampl. input Signal generator output to focus servo, sends 1300Hz for adjust. procedure
35 CFSR - Charge capacitor for Focus Search triangle-generator
36 ALPC + - Non inverting input of Automatic Laser Power Control amplifier
37 ALPC - - Inverting input of Automatic Laser Power Control amplifier
38 ALPC OUT Servo processor →Laser driver Output of Automatic Laser Power Control amplifier
39 MRC - Connection pin for capacitor of Mirror detector
40 HF Servo processor →Decoder Output of HF amplifier
41 HFI - Inverting input of HF amplifier
42 ABC - Sum output of amplified A, B and C input ( central photo diode signal input )
to external ac-coupling capacitor
SIGNAL PROCESSOR M65824FP
Pin Name Direction Description
1 Anal. VSS - Analog system ground
2 ADJCLK not connected Clock output for servo adjustment; f=88.2kHz
3 LOCK not connected Lock monitor / low disc rotation output
4 CKSEL - System clock selection. Low=8.4672MHz, high=16.9344MHz
5 RESET µP →Signal processor System reset ( low level = active )
6 C423 Signal processor →µP 4.2336MHz clock output
7 C846 not connected 8.4672MHz clock output
8XI X-Tal →Signal processor Crystal oscillator input
9 DVSS - Digital system ground
10 XO Signal processor →X-Tal Crystal oscillator output
11 TEST - Normal / Test selection input. Testmode = high
12 SBCO not connected Subcode serial output
13 SCCK - Shift clock input for subcode data read
14 SYCLK not connected Frame lock status output. Lock = high
15 EFFK not connected EFM frame clock output. Duty = 50%
16 KILLB not connected Digital silence mute output. Digital zero = low
17 EST1 not connected Error monitor output 1
18 EST2 not connected Error monitor output 2
19 HF Servo processor →Signal processor HF signal input
20 TLC - Slice level control signal output
21 LPF - PLL loop filter
22 Dig.VDD - Digital interface power supply
23 DSPS - Digital system power supply
24 SBQS not connected Interrupt signal to read out subcode Q data. Read = low
25 CRCF not connected Subcode Q-channel Cyclic Redundance Check Flag output. CRC o.k.=high level
26 SCAND not connected Subcode sync signal detection. Sync = high
27 PWM Signal processor →Motor driver Disc motor driving ( Pulse Width Modulation ) output
28 DVDD2 - Digital interface power supply 2
29 DVSS2 - Digital system ground2
30 MCK µP →Signal processor µP interface shift Clock input
31 MSD µP ↔Signal processor µP interface Serial Data I/O line
32 MLAB µP →Signal processor µP interface Latch clock input ( internal 22k pull up resistor )
33 EXP1 →Signal processor Versatile input pin ( internal 4.7k pull up resistor )
34 EXP2 →Signal processor Versatile input pin ( internal 4.7k pull up resistor )
35 CGREF →Signal processor Charge-pump for LPF reference current input
36 AMPREF not connected Op-amp for LPF reference voltage setting
37 LOUT/DO Signal processor →Audio signal output (left channel) / Ext. DAC mode: Audio serial data output
38 LNEG not connected Charge pump output (left channel) / Ext. DAC mode: Wordclock output
39 ROUT/DSCK Signal processor →Audio signal output (right channel) / Ext. DAC mode: Data shift clock output
40 RNEG/LRCK Signal processor →Charge pump output (right channel) / Ext. DAC mode: L/R clock output
41 IREF - Current reference
42 Anal. VDD - Analog System power supply
Pin-descriptions of CD ICs

3-9
CS 49 118
NOTES

3-103-10
STOP button pressed in any step returns
to begin of Service Testprogram.
NEXT button
pressed?
STOP button
pressed?
N
N
Y
Y
Y
Y
N
Display shows all
segments and flags
for checking open circuits.
see figure 1
Display shows figure 2.
All alternate pins (2, 4, ..)
of the display are activated
for checking shortcircuits.
DISPLAY TEST CD SERVO TEST
Display shows
version number
of the µP - software.
PLAY button
pressed?
Display shows
PLAY button
pressed?
NEXT button
pressed?
PREV. button
pressed?
MODE button
pressed?
Slide moves
outside as long as
button is hold
depressed.
To check Focus over the whole disc area
Slide - and Discmotor can also be activated
in
FOCUS - test.
Slide moves inside
as long as button
is hold depressed
or until
inner-switch
is activated.
Disc motor turns
clockwise
as long as button
is hold depressed.
(accelerate )
NEXT button
pressed?
YYYY
NNNN
FOCUS found?
Y
N
Display shows
objective moves up&down
disc motor for 160ms "on"
PLAY button
pressed?
Y
N
Display shows
disc motor turns.
NEXT button
pressed?
Y
Display shows
PREV button
pressed?
Y
CUE - mode
jumps in steps of
16 tracks forward
FOCUS search
automatic
adjustment of
TRACK BALANCE
REVIEW - mode
jumps in steps of
16 tracks backwards
SLIDE test DISC MOTOR test
To enter Service
Testprogramm hold
PLAY & STOP buttons
depressed while switching
CD mode on.
fig. 1
servtest EVA, 021097
*
*
To leave Service Testprogram switch
CD mode off.
Door switch is ignored → CD door can be opened.
Slide servo, Radial servo, Focus servo, Disc motor
and Laser are switched off.
Mute is switched on via decoder IC.
Purpose of RADIAL test:
To check if the Audio signal is reproduced.
Subcode info is ignored during this test →
If the CD player functions well in this testmode,
but not in the normal Play mode check quality
of the eye-pattern signal.
RADIAL test
Display shows
→ Play mode
MUTE is switched off
while autom. track balance adjustment is active
as soon as
track balance adjustment finished.
(1 - 6) indicates the actual setting.
PLAY button
pressed?
Y
N
MODE button
pressed?
YN
Display shows
automatic
adjustment of
FOCUS GAIN
while autom. focus gain adjustment is active
as soon as
focus gain adjustment finished.
(1 - 6) indicates the actual setting.
PLAY button
pressed?
Y
N
MODE button
pressed?
YN
Display shows
track servo switched on
automatic
adjustment of
TRACK GAIN
while autom. track gain adjustment is active
as soon as
track gain adjustment finished.
(1 - 6) indicates the actual setting.
PLAY button
pressed?
Y
N
NN
MODE button
pressed?
YN
N
SERVICE TESTPROGRAM
SHUFFLE
PROGRAM
REPEAT
ALL
fig. 2
SHUFFLEREPEAT
If the margin settings 0 or 7 are displayed the required
setting is possibly out of the adjustment range.
→ check disc drive and/or electronic circuitry
The CD PLAY TEST is intended to be used
for continuously playing a disc in order to
detect intermittend or not reproducible
failures. The error code indicates where
the failure can be found.
1)
Y
CD PLAY TEST
1)
N
CD is in normal
PLAY mode.
In case of failures
error codes acc. table 1
will be indicated
on the display.
POWER
switched off? N
Y
Exit Service Testprogram
MODE button
pressed?
set continues operation, message remains on the display until next error occurs
or any key is pressed.
Error number Error type
Error type:
Error description
E0 Focus Error
Triggered when the focus is lost for more than 250ms during playing the CD.
E6 Subcode Error
No valid subcode for 300ms during
PLAY .
E3 Slide-out error
Generated when the inner-switch did not open within approx. 250ms when the pick up is
moved from the inner position outside. Inner-switch or slide motor problems.
E2 Slide-in error
Generated when the inner-switch did not close within approx. 4s when the pick up is
moved inside. Inner-switch or slide motor problems.
W
F0 Focus Search Error
Triggered when the focus could not be found within 3s when starting up the CD. F
W
W
F2 Fatal Subcode Error
No valid subcode for more than 4s during
PLAY .F
W
W
W
W = Warning →
F = Fatal Error
→set stops operation, message remains on the display.
CD ERROR codes
table 1
(The set can only be operated again via a
reset )
E5 Jump error.
Triggered when the servo processor counts too less tracks in a defined time during JUMPS.
This can be caused by a disturbed HF-signal (the tracks cannot be recognized exactly),
slide motor problems, track servo problems or scratched discs.
E7 PLL lock error
When the PLL did not lock after 10 retries then this warning message is generated and
the servo is stopped and restarted (as if the user would have pressed
STOP and then
PLAY immediately) to recover.
SERVICE TESTPROGRAM
CS 49 119

4-1 4-1
Rec/Pb
Amplifier
AN7318S
Bias Oscillator
Pb
Rec
Rec
Pb Rec
Pb
Rec
Pb
1626
Pb
1626
CD
Tape
to 1201
FM
AM
1250
CD
Tape
FM
AM
16261626
7625
TA8227P
7300
Pb
CD
Tuner
1
1
5
4
1601
Rec
Rec
Rec Feedback
+B (TAPE)
ALC
1
3
1204
PLAY
+-
permanent
magnet
erase head
right
left
+A
+Laser
+Laser
7854
7803
ALPC
TRACK
E - F
+
-
FOCUS
TRACK
FOCUS
MOTOR DRIVER
SERVO PROCESSOR
M62475
SERVO DRIVER
SLIDE
SERIAL DATA INTERFACE
F
Monitor
Disc -
Disc +
Inner Switch Inner Switch
Inner Switch
ext. DAC
only
Slide +
Slide -
Laser
Track -
Focus +
Track +
Focus -
B+D
A+C
A+B+C+D
E
+Battery
+A (TAPE)
TAPE TRANSPORT
CD Synchro
MOTOR
on /off
N S
Rec
FM
frontend
AM
Frontend
FM
Osc.
FM
Mixer
AM
Mixer
AM
Osc.
AM IF
IF1 IF2 FM
Det.
AM
Det.
RADIO IC
TEA 5711T
TUNER BOARD
Discr.
LF filter
285 29 2
3
26
left left
right
right
stereo
VCO
1514 10 20
Stereo
Decoder
Vcc
2
1
AGC
AM/FM
Indicat.
FERRITE
ANTENNA
18
24
23
16
BC
468kHz468kHz
VStabA VStabB
VStabA VStabB
10,7 MHz 10,7 MHz
9 27
Vcc
625
VStabA
VStabB
12
8
A
AM-RF
AM-Osc.
FM-Osc.
FM-RF
TELESCOPIC
ANTENNA
1
5
7111321
AGC/AFC
tuning indicator
AFC
AFC
7102
7101
AM/FM
switch
STABILIZER
FM-IF 1 FM-IF 2
30
3
AM-IF 1 AM-IF 2
,
,
+B (TAPE)
CD Synchro
CD Synchro
+A (Tuner)
+A (FM)
Tuner L
Tuner R to/from
source switch
+A (Tuner)
+A (FM)
2
1
1202
1
2
1203
+
BATTERY COMPARTMENT
6 x 1.5V
(R20)
3
4
5
MAINS-SOCKET
5001
Th. 115˚C
VOLTAGE
SELECTOR
1007
1006
1
2
(for /01/11 only)
!
!
!
!+A
+A +A(CD)
+A(CD) +B(CD)
+B(CD)
Vcc
Vcc
+B(CD)
+A(on) +B(Tape) +A(FM) +A(Tuner)
REC/PB - AMPLIFIER
SOURCE
SWITCH
Rec
POWER STAGE
DBB
VOLUME
HEADPHONE
1302
RIGHT
LEFT
+
++
+
-
--
-
4
1
1301
p
Left
Right
+A
+M
+M
soft
on/off
4x 1N4002
6250
6251 6252
6253
CD
Tape
FM
AM
on/off
4Ω
4Ω
1350
FRONT BOARD
COMBI BOARD
5803
8.46MHz ext. DAC (opt.)
left, right out
left data
l/r clk
right
4.23MHz
1 11
1
12 1, 35-40
8
39
16 32
13
27
30
Xin
23
CD-reset
11
STOP
PLAY
MODE
PREV
NEXT
7800
1813
1812
key in
+
-
RESET
reset
watchdog
reset
door
1
2
1809 1808
1
21807door
switch
1
28
21 29
36
2
1
5
4
15
30
16
40
33
32
27
19
PWM
PWM
42 VDD analog
VDD logic
VDD 1
VDD 2
23
22
28
5
8
6
10
18
37
40
39
20
REF
HF HF
+Laser
+M
18
15
1811
1 29
7801
DECODER
M65824
6
1
1810
-
+
Clock
Generator
PLL
frontend
motor
control
digital
PLL EFM demod.
flags
DAC
audio
processor
error
control
,,,,,,,
,,,,,,,
,,,,,,,
,,,,,,,
,,,,,,,
SLIDE
DISC
CD - PART
DATA INTERFACE
EVA Blockdiagr., 260897
VDD
VSS
data
interface
D/A
D/A
L/R CLK
DSCK
2
3
1
8
6
TDA1311A/N2
SHUFFLE
PROGRAM
REPEAT
ALL
1101
1201
MICRO PROCESSOR
TMP47C422F
1820
3300
+A(on)
5V
0V
152kHz, 50mV
pp
stereo stereomono
eye-pattern
TB=0,5 us/DIV
Focus search
Service step 2
2V
+
-
0.3s
PWM
DISC MOTOR
TB 2us/Div
4V
HF
DISC
Laser
diode
PHOTO DIODE
ARRAY
DISC
MOTOR
TRACK
SERVO
FOCUS
SERVO
SLIDE
SERVO
CD-drive
CD94V5T1
Monitor
diode
pick up
unit
t
u
r
n
t
a
b
l
e
Inner
switch
FLEX WIRE
FLEX WIRE
F
CD
A
BF
CD
A
BF
E
CD
A
B
s
l
i
d
e
m
o
t
o
r
BLOCK DIAGRAM
CS 49 120