SERVICE NOTETABLE OF CONTENTS
CAUTION1. GENERAL
Use of controls or adjustments or performance of proce-Location of controls ................................................................ 3
dures other than those specified herein may result in haz-Setting the clock ..................................................................... 3
ardous radiation exposure.Radio ....................................................................................... 3
CD Player................................................................................ 3
Other Functions ...................................................................... 4
Notes on Chip Component ReplacementConnections ............................................................................ 4
? Never reuse a disconnected chip component.
? Notice that the minus side of a tantalum capacitor may be dam-2. DISASSEMBLY
aged by heat.2-1. Cover ................................................................................... 6
2-2. Front Panel Assy ................................................................. 6
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK2-3. Key Board ........................................................................... 7
The laser diode in the optical pick-up block may suf2-4.fer electrostaticMain Sub Assy .................................................................... 7
break-down easily. When handling it, perform soldering bridge to2-5. CD Mechanism Block ......................................................... 8
the laser-tap on the flexible board. Also perform measures a2-6. Heat Sinkgainst............................................................................. 8
electrostatic break-down sufficiently before the operation.2-7. Chassis (R) Block Assy ....................................................... 9
The flexible board is easily damaged and should be handled with2-8. Floating Block Assy ............................................................ 9
care.2-9. Roller Arm Assy ................................................................ 10
2-10. Optical Pick-up Block ....................................................... 10
3. DIAGRAMS
3-1. IC Pin Description............................................................. 11
3-2. Block Diagram .................................................................. 13
3-3. Printed Wiring Boards �Main Section� ............................ 15
3-4. Schematic Diagram �Main Section (1/3)� ........................ 19
3-5. Schematic Diagram �Main Section (2/3)� ........................ 21
laser-tap3-6. Schematic Diagram �Main Section (3/3)� ........................ 23
3-7. Schematic Diagram �Display Section�............................. 25
OPTICAL PICK-UP FLEXIBLE BOARD3-8. Printed Wiring Board �Display Section� .......................... 27
4. EXPLODED VIEWS
4-1. Chassis Section ................................................................. 31NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
4-2. Front Panel Section ........................................................... 32the disc reflective surface by the objective lens in the optical pick-up
4-3. CD Mechanism Section (1) ............................................... 33block. Therefore, when checking the laser diode emission, observe
4-4. CD Mechanism Section (2) ............................................... 34from more than 30 cm away from the objective lens.
NOTES ON PICK-UP FLEXIBLE BOARD5. ELECTRICAL PARTS LIST........................................35
The pick-up flexible board in this set is secured to the optical pick-up
with an adhesive tape. Once the tape is removed, an adhering force
becomes weak, and it cannot be reused.
Therefore, if the optical pick-up is replaced, replace also the pick-up
flexible board with a new one.
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 PUBLISHED BY SONY.
� 2 � |
ACEC
