Table of Contents
TABLE OF CONTENTS
1.
2.
................................................................... 11
3.
......................................................... 13
4.
.............................................................. 17
5.
6.
6-1. Block Diagram - SERVO Section - ............................... 31
6-2. Block Diagram - MAIN Section - ................................. 33
Schematic Diagrams ....................................................... 35
6-4. Printed Wiring Board - BD Board - ............................. 37
6-5. Schematic Diagram - BD Board (1/2) - ........................ 39
6-6. Schematic Diagram - BD Board (2/2) - ........................ 41
6-7. Schematic Diagram - SW Board - ................................. 44
6-8. Printed Wiring Board - SW Board - .............................. 44
6-9. Printed Wiring Board - MAIN Board - ......................... 45
6-10. Schematic Diagram - MAIN Board (1/2) - ................... 47
6-11. Schematic Diagram - MAIN Board (2/2) - ................... 49
6-12. Printed Wiring Boards - PANEL Section - ................... 51
6-13. Schematic Diagram - PANEL Section - ....................... 53
6-14. IC Pin Function Description ........................................... 58
7.
8.
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.
.................................... 2
............................................... 4
......................... 22
................................................ 65
............................... 69
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.
Laser component in this product is capable of emitting radia-
tion exceeding the limit for Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
- 4 -
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
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