Sony str de 235 service manual

Page 2

r

General
System Tuner SECIIDn' PLL
quartz-locked digital
synthesuer system
Preamplifier section.
Low-noise NF type
equalizer
Power Amplifier section:
Pureccmphmentary
SEPP
Power 230 V AC,50/60 Hz
requirements
Power 145 W
(onsumption
AC outlet: watched 100 W max
(\hP model)
Dimensions 430 x144 x 300 mm

Mass (Approx) 7.0 kg

Supplied FM Wire aerial (1)
accessories AM loop aerial (1)
Remote commander
(remote) (1)

Size AA (R6) batteries (2]
Scart adaptor (1)

Specifications indicated are measured at
230 VAC, 50 Hz

Design and specifications are subject to
change without notice

TABLE OF CONTENTS

1. GENERAL ................................................................... 3
2. DISASSEMBLY ......................................................... 4
3. TEST MODE ......................... 6
4. DIAGRAMS
4-1. Block Diagram - MAIN Section (1/2) 7
4-2. Block Diagram - MAIN Section (2/2) 9
4-3. Block Diagram

- DISPLAY/POWER SUPPLY Section - ...................... 11

4-4. Note for Printed Wiring Boards

4-5. Printed Wiring Board 7 MAIN Board 7

and Schematic Diagrams ...................

4-6. Printed Wiring Boards

4-7. Schematic Diagram - Main Board (1/4) -

- SP SW Board/SECONDARY Board/
STANDBY Board/PRIMARY Board -

4-8. Schematic Diagram

49. Schematic Diagram - Main Board (3/4) -

- Main Board (2/4)/SP SW Board - .....

4-10. Schematic Diagram - Main Board (4/4)/

4-11. Printed Wiring Boards 7 PANEL Section 7
4-12. Schematic Diagram 7 PANEL Section 7.

SECONDARY Board/STANDBY Board/
PRIMARY Board 7

4-13. Printed Wiring Boards

- VOLUME Board/TONE Board - ................................ 31

4-14. Schematic Diagram

4-15. IC Pin Function Description .......

- VOLUME Board/T ONE Board -

EXPLODED VIEWS .

ELECTRICAL PARTS LIST 41

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A OR DOTI'ED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS

AND IN THE PARTS LIST ARE CRITICAL TO SAFE

OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.