Sony CDC-R237 Service Manual ▷ View online
3
TABLE OF CONTENTS
1. GENERAL
Connections ............................................................................. 4
2. DISASSEMBLY
2-1. Sub Panel Assy .................................................................... 7
2-2. CD Mechanism Block ......................................................... 7
2-3. Main Board Section ............................................................ 8
2-4. Main Board ......................................................................... 8
2-5. Heat Sink (CT) .................................................................... 9
2-6. Sub Board ............................................................................ 9
2-7. Servo Board ....................................................................... 10
2-8. Floating Block Assy .......................................................... 10
2-9. Lever Assy (CD Up Holder) .............................................. 11
2-10. Lever (CD Roller) Sub Assy ............................................. 11
2-11. Lever Assy (CD Holder) ................................................... 12
2-12. Motor (Sled) Sub Assy ...................................................... 12
2-13. Pick-up Sub Assy .............................................................. 13
2-2. CD Mechanism Block ......................................................... 7
2-3. Main Board Section ............................................................ 8
2-4. Main Board ......................................................................... 8
2-5. Heat Sink (CT) .................................................................... 9
2-6. Sub Board ............................................................................ 9
2-7. Servo Board ....................................................................... 10
2-8. Floating Block Assy .......................................................... 10
2-9. Lever Assy (CD Up Holder) .............................................. 11
2-10. Lever (CD Roller) Sub Assy ............................................. 11
2-11. Lever Assy (CD Holder) ................................................... 12
2-12. Motor (Sled) Sub Assy ...................................................... 12
2-13. Pick-up Sub Assy .............................................................. 13
3. ELECTRICAL ADJUSTMENT
.................................... 14
4. DIAGRAMS
4-1. IC Pin Descriptions ........................................................... 15
4-2. Block Diagram –CD Section– ........................................... 19
4-3. Block Diagram –Main Section– ........................................ 20
4-4. Block Diagram –Front Section– ........................................ 21
4-5. Circuit Boards Location .................................................... 21
4-6. Printed Wiring Boards –CD Mechanism Section– ............ 22
4-7. Schematic Diagram –CD Mechanism Section– ................ 24
4-8. Printed Wiring Board –Main Section– .............................. 25
4-9. Schematic Diagram –Main Section (1/2)– ........................ 26
4-10. Schematic Diagram –Main Section (2/2)– ........................ 27
4-11. Printed Wiring Boards –Front Section– ............................ 28
4-12. Schematic Diagram –Front Section– ................................ 29
4-13. IC Block Diagrams ............................................................ 30
4-2. Block Diagram –CD Section– ........................................... 19
4-3. Block Diagram –Main Section– ........................................ 20
4-4. Block Diagram –Front Section– ........................................ 21
4-5. Circuit Boards Location .................................................... 21
4-6. Printed Wiring Boards –CD Mechanism Section– ............ 22
4-7. Schematic Diagram –CD Mechanism Section– ................ 24
4-8. Printed Wiring Board –Main Section– .............................. 25
4-9. Schematic Diagram –Main Section (1/2)– ........................ 26
4-10. Schematic Diagram –Main Section (2/2)– ........................ 27
4-11. Printed Wiring Boards –Front Section– ............................ 28
4-12. Schematic Diagram –Front Section– ................................ 29
4-13. IC Block Diagrams ............................................................ 30
5. EXPLODED VIEWS
5-1. Chassis Section ................................................................. 32
5-2. Front panel Section ........................................................... 33
5-3. CD Mechanism Section (1) ............................................... 34
5-4. CD Mechanism Section (2) ............................................... 35
5-2. Front panel Section ........................................................... 33
5-3. CD Mechanism Section (1) ............................................... 34
5-4. CD Mechanism Section (2) ............................................... 35
6. ELECTRICAL PARTS LIST
........................................ 36
CDC-R237
4
CDC-R237
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
5
CDC-R237
6
CDC-R237
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
2-1.
SUB PANEL ASSY
(Page 7)
(Page 7)
2-2.
CD MECHANISM BLOCK
(Page 7)
(Page 7)
2-6.
SUB BOARD
(Page 9)
(Page 9)
2-7.
SERVO BOARD
(Page 10)
(Page 10)
SET
2-13. PICK-UP SUB ASSY
(Page 13)
2-4.
MAIN BOARD
(Page 8)
(Page 8)
2-5.
HEAT SINK (CT)
(Page 9)
(Page 9)
2-3.
MAIN BOARD SECTION
(Page 8)
(Page 8)
2-8.
FLOATING BLOCK ASSY
(Page 10)
(Page 10)
2-9.
LEVER ASSY (CD UP HOLDER)
(Page 11)
(Page 11)
2-10. LEVER (CD ROLLER) SUB SSY
(Page 11)
2-11. LEVER ASSY (CD HOLDER)
(Page 12)
2-12. MOTOR (SLED) SUB ASSY
(Page 12)