Sony xr 4750 rds service manual

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XR-4750RDS/C450RDS

SERVICE MANUAL A5; 3331

Ver1.1 2001.06

For RM-XZS (Remote Commander), Photo: XFl-C450FtDS
please refer to RM-XZS/XSS Service
Manual (9-960-039-flfl) previously issued.

Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MG-258-136
SPECIFICATIONS
Cassette player section General
Tape track 4-track Z-channei stereo Outputs Telephone mute Control
Wow and flutter 0.08 °/. (WRMS) lend
Frequency response 30 - 18,000 Hz Power amplifier control
SignalAlo-noise ratio 61 dB ('IYPEII, IV) lead
58 dB (TYPEI) (XK-C450Rl)$ only)
Rear line out (I)
Tuner section (XIH,450I{I)S only)
FM Tone controls Bass :8 dB at 100 Hz
Tuning range 87.5 - 108.0 MHz , Tm? 18 dB 3 10 kHz
Antenna terminal External antenna connector Power requirements 12 V D; 3" battery
Intermediate frequency 10? MHz . (negative ground)
Usable Mum, 3 dBf Dimensmns Approx 188 x 58 x18] mm
Seledivity 75 dB at 400 Hi: i i . (/h/d)
Signal-to-noise 0 65 dB (2,), Mounnng dlmenslons Approx. 182 x53 x164 mm
70 dB (mono) (W/h/d)
Harmonic distortion at 1 kHz M355 , . APPT°X4 !-2 k8
0.5 % (stereo), SupplIed accessories Parts for Installation and
Q3 % (mono) connections (1 set)
Separation 35 dB at 1 kHz Rotary °mm"d"
Frequency response 30 - 15,000 Hz RM'XB
Capture ratio 4 dB Front panel case (1)
MW/LW V , _ .
Tuning r ange MW: 531 _ L602 kHz Dssvrgn nml :pmficatmns are subject in dwmgc Without
LW: 153- 251 kHz "Wm
Antenna terminal External antenna connector
Intermediate (requency 10.71 MHz/450 kHz
Sensitivity MW: 30 pV
LW: 50 31V

Power amplifier section

FM/MW/LW CASSETTE CAR STEREO

Speaker impedance 4 ~ 8 ohms
Maximum power output 35 W x 4 (at 4 ohms)

9-925-542-12 Sony Corporation
2001 F0500-1 e Vehicle Company N Y
© 2001.6 Shinagawa Tet: Service Manual Production Group ®

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6-1.
672.
6-3.

TABLE OF CONTENTS

GENERAL
Location of Controls
Setting the Clock
Using the Rotary Remote .
Adjusting the Sound Characteristics
Muting the Sound ........................
Changing the Sound and Beep Tone
Installation
Connections .

\Immmubbw

DISASSEMBLY ............................................................ 10
ASSEMBLY OF MECHANISM DECK ............. 12
MECHANICAL ADJUSTMENTS ......................... 15
ELECTRICAL ADJUSTMENTS

TestMode ........

Tape Deck Section
Tuner Section ..................................................................... 16

DIAGRAMS

Printed Wiring Boards 7 Main Section
Schematic Diagram 7 Main Section 7
Printed Wiring Board 7 Display Section 7
Schematic Diagram 7 Display Section 7

22
25
.. 30
32

IC Pin Function Description . .. 35
EXPLODED VIEWS .................................................. 37
ELECTRICAL PARTS LIST .................................. 40

SERVICING NOTES

Flexible Circuit Board Repairing

0 Keep the temperature of the soldering iron around 270 C during
repairing.

0 Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

0 Be careful not to apply force on the conductor when soldering or
unsoldering .

Notes on chip component replacement

0 Never reuse a disconnected chip component.

I Notice that the minus side of a tantalum capacitor may be dam7
aged by heat.