Sony STR-DE235 Service Manual ▷ View online
MICROFILM
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
AEP Model
UK Model
STR-DE235
SPECIFICATIONS
– Continued on next page –
– 2 –
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
and Schematic Diagrams ................................................ 13
4-5. Printed Wiring Board – MAIN Board – ........................ 15
4-6. Printed Wiring Boards
4-6. Printed Wiring Boards
– SP SW Board/SECONDARY Board/
STANDBY Board/PRIMARY Board – .......................... 17
STANDBY Board/PRIMARY Board – .......................... 17
4-7. Schematic Diagram – Main Board (1/4) – .................... 19
4-8. Schematic Diagram
4-8. Schematic Diagram
– Main Board (2/4)/SP SW Board – ............................... 21
4-9. Schematic Diagram – Main Board (3/4) – .................... 23
4-10. Schematic Diagram – Main Board (4/4)/
4-10. Schematic Diagram – Main Board (4/4)/
SECONDARY Board/STANDBY Board/
PRIMARY Board – ......................................................... 25
PRIMARY Board – ......................................................... 25
4-11. Printed Wiring Boards – PANEL Section – .................. 27
4-12. Schematic Diagram – PANEL Section – ....................... 29
4-13. Printed Wiring Boards
4-12. Schematic Diagram – PANEL Section – ....................... 29
4-13. Printed Wiring Boards
– VOLUME Board/TONE Board – ................................ 31
4-14. Schematic Diagram
– VOLUME Board/TONE Board – ................................ 32
4-15. IC Pin Function Description ........................................... 36
5.
EXPLODED VIEWS
................................................ 38
6.
ELECTRICAL PARTS LIST
............................... 41
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
!
OR DOTTED
LINE WITH MARK
!
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.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
– 3 –
SECTION 1
GENERAL
1
I
/
u button
2 TUNING +, – buttons
3 DISPLAY button
4 PRESET/PTY SELECT +, – buttons
5 RDS PTYbutton
6 RDS EON button
7 FM/AM button
8 VIDEO button
9 TV/LD button
0 MD/TAPE button
!¡ SOUND FIELD + MODE, ON/OFF,
3 DISPLAY button
4 PRESET/PTY SELECT +, – buttons
5 RDS PTYbutton
6 RDS EON button
7 FM/AM button
8 VIDEO button
9 TV/LD button
0 MD/TAPE button
!¡ SOUND FIELD + MODE, ON/OFF,
– MODE buttons
!™ SET UP button and indicator
Location of controls
• Front view
!¢ CINEMA indicator
!∞ MUSIC indicator
!§ BASS BOOST button and indicator
!¶ SPEAKERS A, B ON/OFF buttons
!• PHONES jack
!ª SHIFT button
@º Numeric buttons
@¡ DIRECT button
@™ MEMORY button
@£ FM MODE button
@¢ CD button
@∞ TUNER button
@§ EFFECT/DELAY button and indicator
!∞ MUSIC indicator
!§ BASS BOOST button and indicator
!¶ SPEAKERS A, B ON/OFF buttons
!• PHONES jack
!ª SHIFT button
@º Numeric buttons
@¡ DIRECT button
@™ MEMORY button
@£ FM MODE button
@¢ CD button
@∞ TUNER button
@§ EFFECT/DELAY button and indicator
@¶ CENTER button and indicator
@• – button
@ª + button
#º REAR button and indicator
#¡ ENTER button
#™ NAME button and indicator
#£ VOLUME control
#¢ MUTING button and indicator
#∞ TREBLE control
#§ BASS control
#¶ BALANCE control
@• – button
@ª + button
#º REAR button and indicator
#¡ ENTER button
#™ NAME button and indicator
#£ VOLUME control
#¢ MUTING button and indicator
#∞ TREBLE control
#§ BASS control
#¶ BALANCE control
3
4 5
1
2
67
!¢
89
0
!¡
!™
!∞
!§
!¶
!•
!ª @º @¡ @™
#∞
#§
#¶
@£
@¢ @∞
@§@¶@• @ª#º
#™ #£
#¢
#¡
• Rear view
1
2 3 4 5 6
7
8
9
0
!¡
– 4 –
CASE
FRONT PANEL SECTION
Note:
Follow the disassembly procedure in the numerical order given.
SECTION 2
DISASSEMBLY
1
two screws
(case3 TP2)
(case3 TP2)
1
screw (case3 TP2)
1
two screws
(case3 TP2)
(case3 TP2)
2
case
2
three connectors
(CNP702 – 704)
(CNP702 – 704)
4
claw
5
front panel section
3
screw
(BVTP3
(BVTP3
×
8)
3
four screws
(BVTP3
(BVTP3
×
8)
4
claw
1
three flat wires
(CNS204, 403, 701)
(CNS204, 403, 701)