Sony HCD-VP1, Service Manual

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TABLE OF CONTENTS
1. GENERAL
Location of Controls ....................................................... 3
Setting the Time .............................................................. 4
2. DISASSEMBLY
......................................................... 5
3. SERVICE MODE
...................................................... 10
4. ELECTRICAL CONFIRMATIONS AND
ADJUSTMENTS
DECK Section ................................................................. 11
CD Section ...................................................................... 13
5. DIAGRAMS
5-1. Block Diagram – SERVO Section – ............................... 15
5-2. Block Diagram – TAPE Section – .................................. 16
5-3. Block Diagram – MAIN Section – ................................. 17
5-4. Block Diagram
– DISPLAY/POWER SUPPLY Section – ...................... 18
5-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 19
5-6. Printed Wiring Board – CD Board – .............................. 20
5-7. Schematic Diagram – CD Board – ................................. 21
5-8. Schematic Diagram – MAIN Board (1/4) – ................... 22
5-9. Schematic Diagram
– MAIN Board (2/4), HP/MIC Board,
VIDEO SW Board, LOADING Board – ........................ 23
5-10. Schematic Diagram – MAIN Board (3/4) – ................... 24
5-11. Schematic Diagram
– MAIN Board (4/4), LCD Board – .............................. 25
5-12. Printed Wiring Board – MAIN Board – ......................... 26
5-13. Printed Wiring Boards
– LCD Board, HP/MIC Board,
VIDEO SW Board, LOADING Board – ........................ 27
5-14. Printed Wiring Board – CONTROL Board – ................. 28
5-15. Schematic Diagram – CONTROL Board – .................... 29
5-16. Printed Wiring Board – POWER Board – ...................... 30
5-17. Schematic Diagram – POWER Board – ......................... 30
5-18. IC Pin Function Description ........................................... 35
6. EXPLODED VIEWS
................................................ 37
7. ELECTRICAL PARTS LIST
............................... 42
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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
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.