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SERVICE MANUAL
FM/AM CASSETTE CAR STEREO
US Model
Canadian Model
SPECIFICATIONS
XR-CA350X
Ver 1.3 2003.11
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
MG-36SZ13-32
9-874-222-04
Sony Corporation
2003K05-1
e Vehicle Company
C
2003.11
Published by Sony Engineering Corporation
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
22 watts per channel minimum continuous average power into 4
ohms, 4 channels driven from 20 Hz to 20 kHz with no more than
5 % total harmonic distortion.
Other specifications
Cassette player section
Tape track
4-track 2-channel stereo
Wow and flutter
0.13 % (WRMS)
Frequency response
30 ­ 15,000 Hz
Signal-to-noise ratio
55 dB
Tuner section
FM
Tuning range
FM tuning interval:
87.5 ­ 107.9 MHz
(at 200 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
Usable sensitivity
9 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
67 dB (stereo),
69 dB (mono)
Harmonic distortion at 1 kHz
0.5 % (stereo),
0.3 % (mono)
Separation
35 dB at 1 kHz
Frequency response
30 ­ 15,000 Hz
AM
Tuning range
AM tuning interval:
530 ­ 1,710 kHz
(at 10 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
Sensitivity
30 µV
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
Speaker impedance
4 ­ 8 ohms
Maximum power output 45 W × 4 (at 4 ohms)
General
Outputs
Audio output
Power antenna relay
control lead
Power amplifier control
lead
Inputs
BUS control input terminal
BUS audio input terminal
Tone controls
Low:
±10 dB at 60 Hz (Xplod)
Mid:
±10 dB at 1 kHz (Xplod)
High:
±10 dB at 10 kHz (Xplod)
Power requirements
12 V DC car battery
(negative ground)
Dimensions
Approx. 178 × 50 × 178 mm
(7 1/8 × 2 × 7 1/8 in)
(w/h/d)
Mounting dimensions
Approx. 182 × 53 × 161 mm
(7 1/4 × 2 1/8 × 6 3/8 in)
(w/h/d)
Mass
Approx. 1.2 kg (2 lb 10 oz)
Supplied accessories
Parts for installation and
connections (1 set)
Front panel case (1)
Design and specifications are subject to change
without notice.


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2
XR-CA350X
Flexible Circuit Board Repairing
·Keep the temperature of the soldering iron around 270 °C dur-
ing repairing.
· Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
· Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
·Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
TABLE OF CONTENTS
SERVICING NOTES ............................................... 2
1.
GENERAL
Location of Controls .......................................................
3
Setting the Clock .............................................................
3
2.
DISASSEMBLY
2-1. Disassembly Flow ...........................................................
7
2-2. Sub Panel .........................................................................
7
2-3. Mechanism Deck (MG-36SZ13-32) ...............................
8
2-4. MAIN Board ...................................................................
8
2-5. Heat Sink .........................................................................
9
2-6. Bracket (MD) ..................................................................
9
2-7. DC Motor (Capstan/Reel) (M901) ................................. 10
2-8. Main Belt, Sub Belt (C) .................................................. 10
2-9. Head (Playback) (HP901) ............................................... 11
3.
MECHANICAL ADJUSTMENTS ....................... 12
4.
ELECTRICAL ADJUSTMENTS ......................... 12
Tape Deck Section .......................................................... 12
Tuner Section .................................................................. 13
5.
DIAGRAMS
5-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 14
5-2. Printed Wiring Board ­ MAIN Board ­ ........................ 15
5-3. Schematic Diagram ­ MAIN Board (1/2) ­ .................. 16
5-4. Schematic Diagram ­ MAIN Board (2/2) ­ .................. 17
5-5. Printed Wiring Board ­ CONTROL Board ­ ................ 18
5-6. Schematic Diagram ­ CONTROL Board ­ ................... 19
5-7. IC Pin Function Description ........................................... 21
6.
EXPLODED VIEWS
6-1. General Section ............................................................... 23
6-2. Front Panel Section ......................................................... 24
6-3. MAIN Board Section ...................................................... 25
6-4. Mechanism Deck Section (MG-36SZ13-32) ................. 26
7.
ELECTRICAL PARTS LIST ............................... 27
Ver 1.3
SERVICING NOTES
SERVICE POSITION
In checking the control board and main board, prepare two jigs
(extension (MD) cord J-2502-060-1 and
connection cable for F/P to main J-2502-072-1).
main board
(CN600)
mechanism deck
main board (CN350)
main board (CN300)
control board (CN900)
connect jig
(connection cable
for F/P to main J-2502-072-1)
to the main board (CN600) and
control board (CN900).
connect jig
(extention (MD) cord J-2502-060-1)
to the main board (CN300, CN350)
and mechanism deck.
SOURCE
MODE
SEL
RELEASE
EQ3
DSPL
ATT
DISC
REP
SHUF
ATA
12345
6
BTM
OFF
SENS
SEEK
DIR
ATA: TYPE ATA
ATA/CAT: TYPE CAT
Note of replacing of the IC1
In this set, the IC101 on the MAIN board is changed from the
midway of the production.
When the replacing of the IC1, be sure to check the model name
printed by IC, and replace the IC1 by following the instructions
below.
· When replacing of the IC1 (MN101C49HAS)
Replace the IC1 with the MN101C49HEA (Part No.: 6-603-
178-01), and replace the TU101 (A-3220-944-A) simultaneously.
· When replacing of the IC1 (MN101C49HEA)
Perform the usual replacing.
Note of replacing of the front panel
In this set, the front panel is changed from the midway of the pro-
duction.
When the replacing of the FRONT PANEL or FRONT PANEL
ASSY, be sure to check the front panel in which type, and replace.


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3
XR-CA350X
SECTION 1
GENERAL
This section is extracted from
instruction manual.
Location of controls
Refer to the pages listed for details.
1 SOURCE (Radio/CD/MD) button
2 MODE button
During radio reception:
Band select
During CD/MD playback:
CD/MD unit select
3 Volume +/­ button
4 Z (eject) button
5 Display window
6 m/M (fast winding)/DIR (tape
transport direction change) buttons
7 SEEK button
Seek
Automatic Music Sensor
Manual search
8 DSPL (display mode change) button
9 EQ3 button
q; RELEASE (front panel release) button
qa SEL (select) button
qs RESET button (located on the front side
of the unit behind the front panel)
qd ATT (attenuate) button
qf Number buttons
During radio reception:
Preset number select
During CD/MD playback:
(1) DISC ­
(2) DISC +
(3) REP
(4) SHUF
qg BTM/ATA button
qh SENS button
qj OFF button*
* Warning when installing in a car
without ACC (accessory) position on
the ignition key switch
Be sure to press (OFF) on the unit for 2
seconds to turn off the clock display after
turning off the engine.
When you press (OFF) momentarily, the
clock display does not turn off and this
causes battery wear.
XR-CA350X
SOURCE
MODE
SEL
RELEASE
EQ3
DSPL
ATT
DISC
REP
SHUF
ATA
12345
6
BTM
OFF
SENS
SEEK
DIR
Setting the clock
The clock uses a 12-hour digital indication.
Example: To set the clock to 10:08
1 Press (DSPL) for 2 seconds.
The hour indication flashes.
1
Press either side of the volume button
to set the hour.
2
Press (SEL).
The minute indication flashes.
3
Press either side of the volume button
to set the minute.
2 Press (DSPL).
The clock starts.
Afterthe clock setting is complete, the
display returns to normal play mode.
to go forward
to go back
to go forward
to go back


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4
XR-CA350X
Equipment used in illustrations (not supplied)
Appareils utilisés dans les illustrations (non fournis)
Power amplifier
Amplificateur de puissance
CD/MD changer
Changeur de CD/MD
Front speaker
Haut-parleur frontal
Rear speaker
Haut-parleur arrière
B
BUS AUDIO IN
BUS CONTROL IN
BUS CONTROL IN
BUS AUDIO IN
A
* not supplied
* non fourni
Source selector
*
Sélecteur de source
*
XA-C30
AUDIO OUT
REAR
2
Cautions
·This unit is designed for negative ground 12 V
DC operation only.
·Do not get the wires under a screw, or caught
in moving parts (e.g., seat railing).
·Before making connections, turn the car
ignition off to avoid short circuits.
·Connect the yellow and red power input leads
only after all other leads have been connected.
·Run all ground wires to a common ground
point.
·Be sure to insulate any loose unconnected
wires with electrical tape for safety.
Notes on the power supply cord (yellow)
·When connecting this unit in combination with
other stereo components, the connected car
circuit's rating must be higher than the sum of
each component's fuse.
·When no car circuits are rated high enough,
connect the unit directly to the battery.
Parts Iist (1)
·The numbers in the list are keyed to those in
the instructions.
·The bracket 1 and the protection collar 3 are
attached to the unit before shipping. Before
mounting the unit, use the release keys 5 to
remove the bracket 1 and the protection collar
3
from the unit. For details, see "Removing
the protection collar and the bracket (4)" on
the reverse side of the sheet.
·Keep the release keys 5 for future use as
they are also necessary if you remove the
unit from your car.
Caution
Handle the bracket 1 carefully to avoid injuring
your fingers.
Note
Before installing, make sure that the catches on
both sides of the bracket 1 are bent inwards 2 mm
(3/32 in). If the catches are straight or bent outwards,
the unit will not be installed securely and may spring
out.
Connection example (2)
Notes (2-B-
)
· Be sure to connect the ground cord before
connecting the amplifier.
· If you connect an optional power amplifier and do
not use the built-in amplifier, the beep sound will
be deactivated.
Tip (2-B-
)
For connecting two or more CD/MD changers, the
source selector XA-C30 (optional) is necessary.
Connection diagram (3)
1
To a metal surface of the car
First connect the black ground lead, then
connect the yellow and red power input leads.
2
To the power antenna control lead or power
supply lead of antenna booster amplifier
Notes
· It is not necessary to connect this lead if there
is no power antenna or antenna booster, or
with a manually-operated telescopic antenna.
·When your car has a built-in FM/AM antenna in
the rear/side glass, see "Notes on the control
and power supply leads."
3
To AMP REMOTE IN of an optional power
amplifier
This connection is only for amplifiers. Connecting
any other system may damage the unit.
4
To the +12 V power terminal which is energized
in the accessory position of the ignition key
switch
Notes
· If there is no accessory position, connect to the
+12 V power (battery) terminal which is
energized at all times.
Be sure to connect the black ground lead to it
first.
·When your car has a built-in FM/AM antenna in
the rear/side glass, see "Notes on the control
and power supply leads."
5
To the +12 V power terminal which is energized
at all times
Be sure to connect the black ground lead to it
first.
Catch
1


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5
XR-CA350X
Notes on the control and power supply leads
· The power antenna control lead (blue) supplies
+12 V DC when you turn on the tuner.
·When your car has built-in FM/AM antenna in the
rear/side glass, connect the power antenna control
lead (blue) or the accessory power input lead (red)
to the power terminal of the existing antenna
booster. For details, consult your dealer.
·A power antenna without relay box cannot be
used with this unit.
Memory hold connection
When the yellow power input lead is connected,
power will always be supplied to the memory circuit
even when the ignition key is turned off.
Notes on speaker connection
· Before connecting the speakers, turn the unit off.
· Use speakers with an impedance of 4 to 8 ohms,
and with adequate power handling capacities to
avoid its damage.
· Do not connect the speaker terminals to the car
chassis, or connect the terminals of the right
speakers with those of the left speaker.
· Do not connect the ground lead of this unit to the
negative (­) terminal of the speaker.
· Do not attempt to connect the speakers in parallel.
· Connect only passive speakers. Connecting active
speakers (with built-in amplifiers) to the speaker
terminals may damage the unit.
·To avoid a malfunction, do not use the built-in
speaker wires installed in your car if the unit
shares a common negative (­) lead for the right
and left speakers.
· Do not connect the unit's speaker cords to each
other.
BUS
AUDIO IN
AUDIO
OUT
1
2
4
5
Supplied with XA-C30
Fourni avec le XA-C30
Blue
Bleu
Red
Rouge
Yellow
Jaune
4
Black
Noir
RCA pin cord (not supplied)
Cordon à broche RCA (non fourni)
Max. supply current 0.1 A
Courant max. fourni 0,1 A
from car antenna
de l'antenne de la voiture
Fuse (10 A)
Fusible (10 A)
BUS AUDIO IN
AUDIO
OUT REAR
AMP REM
ANT REM
BUS CONTROL IN
Blue/white striped
Rayé bleu/blanc
Max. supply current 0.3 A
Courant max. fourni 0,3 A
White
Blanc
Gray
Gris
Green
Vert
Purple
Mauve
White/black striped
Rayé blanc/noir
Gray/black striped
Rayé gris/noir
Green/black striped
Rayé vert/noir
Purple/black striped
Rayé mauve/noir
Source selector
(not supplied)
Sélecteur de source
(non fourni)
XA-C30
Left
Gauche
Right
Droit
Left
Gauche
Right
Droit
3
Supplied with the CD/MD changer
Fourni avec le changeur de CD/MD
3