Table Of Contents - Sony HCD-BX5 Service Manual

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK 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.
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,
observe from more than 30 cm away from the objective lens.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during 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.

TABLE OF CONTENTS

1. SERVICE NOTE
······························································· 4
2. GENERAL
·········································································· 5
3. DISASSEMBY
·································································· 7
4. TEST MODE
···································································· 12
5. MECHANICAL ADJUSTMENTS
6. ELECTRICAL ADJUSTMENTS
7. DIAGRAMS
7-1. Circuit Board Location ················································· 21
7-2. Block Diagrams ···························································· 22
7-3. Printed Wiring Board
7-4. Schematic Diagram
7-5. Printed Wiring Board
7-6. Schematic Diagram
7-7. Schematic Diagram
7-8. Schematic Diagram
7-9. Printed Wiring Board
7-10. Schematic Diagram
7-11. Printed Wiring Board
7-12. Schematic Diagram
7-13. Printed Wiring Board
7-14. Schematic Diagram
7-15. Printed Wiring Board
7-16. Schematic Diagram
7-17. Printed Wiring Board
7-18. Schematic Diagram
7-19. IC Pin Function Description ······································· 40
7-20. IC Block Diagrams ····················································· 42
8. EXPLODED VIEWS
8-1. Main Section ································································· 45
8-2. Panel Section ································································ 46
8-3. Main Board Section ······················································ 47
8-4. Tape Mechanism Section ·············································· 48
8-5. CD Mechanism Section ················································ 49
9. ELECTRICAL PARTS LIST
MODEL IDENTIFICATION
- BACK PANEL -
MODEL
AED, AEP, CIS, UK, G, AUS,
KR, MX, TH models
AR, E, EA, SP, TW, MY models
US, CND models
• Abbreviation
CND : Canadian model
AUS : Australian model
G : German model
AED : North European model
EA : Saudi Arabia model
MY : Malaysia model
····························· 16
······························· 16
BD Section ···························· 24
BD Section ······························· 25
Main Section ························· 26
Main Section (1/3) ··················· 27
Main Section (2/3) ··················· 28
Main Section (3/3) ··················· 29
AMP Section ························· 30
AMP Section ·························· 31
Panel Section ······················· 32
Panel Section ·························· 33
Leaf SW Section ·················· 34
Leaf SW Section ···················· 35
Driver Section ······················ 36
Driver Section ························ 37
Trans Section ······················· 38
Trans Section ·························· 39
······································· 50
PARTS No.
PARTS No.
4-225-040-0s
4-225-040-1s
4-225-040-2s
SP : Singapore model
TH : Thai model
TW : Taiwan model
KR : Korea model
MX : Mexican model
AR : Argentina model
3