Sony cdx 900 service manual

Page 2

AM (US model only)

TABLE OF CONTENTS

Tuning range 530 - 1,710 kHz
Antenna terminal External antenna connector
Intermediate frequenc '
y1071 MHz/450 kHz m M £23;
Sensitivity 30 uV 1 _ GENERAL
General Fem"? " 3
Output lead Power antenna relay control Precautions .. 3
lead Location and Function of Control "4
Power amplifier control lead Detaching and Attaching the Front Panel ~ 8
Tone controls Bass 2 8 dB at 100 Hz Setting the Clock ' 8
TrebletsdBatIOkHz Playing a CD 9
Loudness +6 dB at 100 HZ CD Changer Operation
+6dBat10kHz P14 , i Oh Md .
Power requirements 12 V DC car battery (negative aying .m 1 er 0 es '
ground) Displaying the Title of Each Disc
Dimensions Approx. 186 x 57 x180 mm Tuning in a Station ~~~~~~~~~~

(w/h/d) not incl. projecting
parts and controls

Mounting dimension Approx. 182 x 53 x 152 mm
(w/h/d) not incl. proiecting
parts and controls

Mass Approx 1.5 kg
Supplied accessories Rotary commander RM-X33 (1)
Mounting hardware (1 set) 2

Power connecting cord (1)
Front panel case (1)

Design and specifications subject to change without
notice.

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use
the procedure in the printed matter which is included in the repair
pans.

The flexible board is easily damaged and should be handled with
care.

7.

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

Displaying the Stored CD's Information on the TV Monitor
Overview of the RDS Funcrion
Station Service Name Display
Automatic Re-tuning
Receiving Traffic Announcements
Connections ..................................................................... 19

DISASSEMBLY
2-Ii Panel As.
2-2. Cover H
2-3. Panel Assy. Sub
2-4. CD Mechanism Block

TEST MODE ......................................................... 24
ELECTRICAL ADJUSTMENTS ------------------------ 27
DIAGRAMS

5-]. IC Pin Function
'lCIO Mechanism Control Microproce. or
(pPD7SSI7GF-260-3B9) N
'lCSOl Master Control Microproce or
(uPD7SSl8GF-I85»SB9)
OICSSI Tuner Control Microprocessor
(MN18824I7SNU2)(AEP. German models only) ~~~~~~ 33
OICSSI Tuner Control Microprocessor
(MNIS824I7SZP)(US model only) """"""""""
5»2. Semiconducrot Lead Layouts '
5-3i Block Diagram """"""""""
5-4. Printed Wiring Boards-CD Section
5-5. Schematic Diagram-CD Section'
5-6. Schematic Diagram-Main Section-
5-7. Printed Wiring Board -Main Section-
5-8. Schematic Diagram- 'play Sectionw
5-9. Printed Wiring Board-Display Section? ~~~~~~~~~~~~~~~~ 65

EXPLODED VIEWS
6-li General Section-l
6-21 General Section-2
6-3. MD Section-l
6-4. MD Section-2

ELECTRICAL PARTS LIST -