Philips 22DC 570 User manual

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® 4822 725 21755
Printed in The Netherlands
©Copyright reserved
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Service Con s um er El ec tron ics

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AERIAL SOCKET
TECHNICAL DATA
General
Power supply
Dimensions(wxhxd)
Remote control unit
Radio
LW
MW
FM
IF-AM
IF-FM
Sensitivity
26 dB S/R
Limitation u-3dB
10 dB crosstalk
0
: 14.4V DC
: 180x51x150 mm
: 22EN9875
: 144-288 kHz
: 522-1611 kHz
: 87.5-108 MHz
: 10.7 MHz
: 10.7 MHz
: 160
~-tV (LW)
:
11 0 ~-tV (MW)
: 4 ~-tV (FM)
: 15
~-tV
: 150 ~-tV
1166
FUSE 2.5 AT
- ...w---:!:-
[ I I I -1-H-- +
12V SWITCHED
oO
FR
oO
FL
~I+- AUTOM.AERIAL
-.~-!~+.- +12V DIRECT
-+1-1-- REMOTE SEARCH
[lJ
REAR
RIGHT
REAR[(]
LEFT
[1J
FRONT FRONT rt1
RIGHT LEFT L1..J
Cassette player
Number
of tracks
Tape speed
Wow & Flutter
Crosstalk
Amplifier
Output power (D ~ 10%)
Loudness
Tone control
42700A12
: 2x2
: 4.76
cmjsec
: ~ 0.35%
: ~ 30 dB
: 2x5.2W ± 1
dBj4Q
: 7 dB at 100 Hz
6 dB at 10kHz
: -9 dB at 100 Hz
: -14dB at
10kHz

SE RVICING HINTS
SERVI
CE TEST PROGRA MM E
The 1-1C test programme can be called without first
entering the security code.
1-1 C test
This test is called by turning the set on while keeping the
~ P 1 . and P2 keys depressed.
Besides the RAM, a great number
of 1-1C instructions are
tested. If
no faults occur, a special pattern will be
displayed. (See fig. 1
f)
The test can be stopped by turning the set off.
Di splay test
The display test is called by turning the set on while
keeping the P1 and P3 keys depressed.
A number of easily recognizable patterns are then
displayed in succession. (See figs. 1a to 1 h)
If you want to make one of the patterns visible for a
longer time, you only have to keep the P1 key pressed
for the required time.
SECURITY C OD E
General
To reduce the risk of theft, this car radio has a built-in
electronic lock. The security code has been entered in
the factory and cannot be changed by the customer.
The security code consists of four figures varying
between "0000" and "9999". The figures are selected by
pressing the
UP and DOWN keys and are entered by
pressing the
P1 key. If you enter a wrong code, you will
hear an error bleep and after 1 minute you will be given
a new opportunity to enter the right code. Each time a
wrong code is entered, the waiting time is doubled, so
1,
2, 4, 8 etc. with a maximum of 32 minutes.
Not e: If the set is presented for repair with the security
code switched on, and the customer has not stated the
right code, the set will not
be able to function.
Replacing the ee prom by a "non-coded" eeprom a nd/ or
replac in g th e mi croprocessor will not help in th at case .
Work
in g
ACTIVATING THE SECURITY CODE
Proceed as follows:
Switch the set on while pressing the UP key.
Now you hear a two-tone beep and the protection is
activated.
The car radio will signal that the code has been activated
by briefly showing in t he display the character '-C-' at the
moment of switching
on the radio.
ENTRY OF THE CODE
Example: Suppose th e co de is 4567.
Action
Di s pl ay Note
shows
-Switch on -C-
-Press P1
-Select UP/DOWN "4" 4 first figure
-Press P1
4-
-Select UP/DOWN "5" 45 second figure
-Press P1 45-
-Select UP /DOWN "6" 456 third figure
-Press P1
456-
-Select UP/DOWN "7" 4567 fourth figure
-Press P1
confirmation tone
The radio
is now on and you can operate t he cassette
player.
Now that the security code is active, the code should be
entered again each time the supply voltage has been
interrupted.
To indicate that the security code is activated, the display
briefly shows the character
"C " each time the set is
turned on.
S WIT CHING THE CODE OFF
Switch the set on while pressing the UP key. The display
shows the indication "-C-". Enter the right code in the
way described above. Two two-tone squeaks confirm
that the security code
is switched off.
/A
ESD~
All ICs and many other semi-conductors are susceptible
to electrostatic discharges (ESD).
Careless handling during repair can reduce service life
drastically. When repairing, make sure that you are
connected to the same potential as the mass
of the set
via a wrist wrap with resistance.
Keep components and tools also at this potential.
CS 12 222GB

1001 MAIN P.B. A SS Y
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CH IP CAPACITOR
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CH IP RESISTOR
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CH IP
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CH IP TRANSISTER
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FOR SDK VERSION ONLY
4052 NOT FOR SDK VERSION
4053 NOT FOR AUTO REVERSE
VERSION
**C 401 =REMOTE SEARCH
C 402 = + 12 V SWITCHED
C 403 =+ 12 V DIRECT
C 404 =N .C.
C 405= AUTO AERIAL
43 058 D12
C406 =+FLJ
C 407=-L.
C408 =+ RL rt1
c 409 =- R. LLJ
C 410 =+FR.
C 411 = R.R.

C401 = REMOTE SEARCH
C402 = +12V SWITCHED
C403 = +12V DIRECT
C404 = N.C.
C405 = AUTO.AERIAL
C406 = +FL)
C407 = -L
C408 = +RL rt1
C409 =-R l.I-J
C410 = +FR
C411 =+RR
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1053 CONNECTING BLOCK P. B. ASSY
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43 026 812
+12V
AUTO AERIAL
+12V DIRECT
REMOTE SEARCH