Read Sony CMT-EX200 / HCD-EX200 Service Manual online
3
HCD-EX200
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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 parts.
The flexible board is easily damaged and should be handled with
care.
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 parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
that the S curve waveform is output four times.
TABLE OF CONTENTS
1. SERVICING NOTE
.......................................................... 4
2. GENERAL
.......................................................................... 7
3. DISASSEMBLY
3-1. Rear Cover, Bottom Plate, Case and Eject Board ................. 9
3-2. Panel Board and Stabilizer .................................................. 10
3-3. AMP Block ......................................................................... 10
3-4. CD Block ............................................................................ 11
3-5. Motor Assy (Loading Board), CAM and SW Board .......... 11
3-6. Base Unit and Pick Up Assy ............................................... 12
3-7. Main Board (Loading Board),
REG Board and Power Board ............................................. 12
3-2. Panel Board and Stabilizer .................................................. 10
3-3. AMP Block ......................................................................... 10
3-4. CD Block ............................................................................ 11
3-5. Motor Assy (Loading Board), CAM and SW Board .......... 11
3-6. Base Unit and Pick Up Assy ............................................... 12
3-7. Main Board (Loading Board),
REG Board and Power Board ............................................. 12
4. ELECTRICAL ADJUSTMENT
................................... 13
5. DIAGRAMS
5-1. Circuit Boards Location ...................................................... 14
5-2. Block diagrams – Tuner/CD Section – ............................... 16
5-2. Block diagrams – Tuner/CD Section – ............................... 16
Block diagrams – AMP Section – ....................................... 17
5-3. Printed Wiring Board – Main Section – .............................. 18
5-4. Schematic Diagram – Main (1/3) Section – ........................ 19
5-5. Schematic Diagram – Main (2/3) Section – ........................ 20
5-6. Schematic Diagram – Main (3/3) Section – ........................ 21
5-7. Printed Wiring Board – LED/Loading/SW/AMP Section – 22
5-8. Schematic Diagram
5-4. Schematic Diagram – Main (1/3) Section – ........................ 19
5-5. Schematic Diagram – Main (2/3) Section – ........................ 20
5-6. Schematic Diagram – Main (3/3) Section – ........................ 21
5-7. Printed Wiring Board – LED/Loading/SW/AMP Section – 22
5-8. Schematic Diagram
– LED/Loading/SW/AMP Section Section – ...................... 23
5-9. Printed Wiring Board – Panel/Eject Section – .................... 24
5-10. Schematic Diagram – Panel/Eject Section – ..................... 25
5-11. Printed Wiring Board – REG Section – ............................ 26
5-12. Schematic Diagram – REG Section – .............................. 27
5-13. Printed Wiring Board – Power Section – ......................... 28
5-14. Printed Wiring Board – Power Section – ......................... 29
5-15. IC Pin Functions ............................................................... 30
5-16. IC Block Diagrams ........................................................... 33
5-10. Schematic Diagram – Panel/Eject Section – ..................... 25
5-11. Printed Wiring Board – REG Section – ............................ 26
5-12. Schematic Diagram – REG Section – .............................. 27
5-13. Printed Wiring Board – Power Section – ......................... 28
5-14. Printed Wiring Board – Power Section – ......................... 29
5-15. IC Pin Functions ............................................................... 30
5-16. IC Block Diagrams ........................................................... 33
6. EXPLODED VIEWS
6-1. Front and Case Section ....................................................... 36
6-2. Chassis Section ................................................................... 37
6-3. Mechanism Section ............................................................. 38
6-2. Chassis Section ................................................................... 37
6-3. Mechanism Section ............................................................. 38
7. ELECTRICAL PARTS LIST
.................................
39
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