Sony HCD-xb5 Service Manual Download Page 3

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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.

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.

TABLE OF CONTENTS

GENERAL

Getting Started .................................................................. 4
Basic Operations ............................................................... 7
The CD Player ................................................................ 11
The Tape Deck ................................................................ 13
DJ Mix ............................................................................ 14
Sound Adjustment .......................................................... 15
Other Features ................................................................ 17
Additional Information ................................................... 20

DISASSEMBLY

......................................................... 21

TEST MODE

.............................................................. 29

MECHANICAL ADJUSTMENTS

........................ 31

ELECTRICAL ADJUSTMENTS

DECK Section ................................................................ 31
TUNER Section .............................................................. 34
CD Section ...................................................................... 36

DIAGRAMS

6-1. Block Diagram – TUNER Section –

(AEP, UK models) .......................................................... 38

6-2. Block Diagram – TUNER Section –

(EE, CIS models) ............................................................ 39

6-3. Block Diagram – CD Section – ....................................... 42
6-4. Block Diagram – MAIN Section – .................................. 43
6-5. Schematic Diagram – BD Section – ................................ 47
6-6. Printed Wiring Board – BD Section – ............................. 49
6-7. Schematic Diagram – CD MOTOR Section – ................ 51
6-8. Printed Wiring Boards – CD MOTOR Section – ........... 53
6-9. Schematic Diagram – TUNER Section –

(AEP, UK models) .......................................................... 55

6-10. Printed Wiring Board – TUNER Section –

(AEP, UK models) .......................................................... 57

6-11. Schematic Diagram – TUNER Section –

(EE, CIS models) ............................................................ 59

6-12. Printed Wiring Board – TUNER Section –

(EE, CIS models) ............................................................ 61

6-13. Printed Wiring Boards – DECK Section – .................... 63
6-14. Schematic Diagram – DECK Section – ......................... 65
6-15. Schematic Diagram – MAIN Section – ......................... 69
6-16. Printed Wiring board – MAIN Section – ....................... 73
6-17. Schematic Diagrm – PANEL Section – .......................... 76
6-18. Printed Wiring Boards – PANEL Section – .................... 79
6-19. Printed Wiring Boards – POWER Section – .................. 83
6-20. Schematic Diagram – POWER Section – ....................... 85
6-21. IC Pin Function Description ........................................... 93