Sony cdx a 15 service manual

Page 2

CDX-A15

TABLE OF CONTENTS

Section

Title

Specifications . .
Features

1. SERVICING NOTES
Notes on Handling the Optical Pick-up

Block or Base Unit ----------------------- 2

Protection of Eyes from Laser Beam

during Servicing .......................... 3
2. GENERAL

Preparations -------- 4

Installation 4

Connections ............................. 4
3. DISASSEMBLY ------------------------- 6

4. MECHANICAL ADJUSTMENTS

Large Elevator Gear Position
(Location 10.5) Adjustment --------------- 7

Homing Adjustment ...................... 8
5. ELECTRICAL ADJUSTMENTS
1. Focus Offset Adjustment ---------------- 9
2. Tracking Offset Adjustment ------------- 9
3. Tracking Gain Adjustment -------------- 10
4. Focus Gain Adjustment ----------------- 11
5. PLL Freerun Frequency Adjustment ------ 1 l
6. DIAGRAMS
6-1. ICSO3 CX7991 Pin Function Description ----- 12
6-2. RF Printed Wiring Board ------ - ~ 13
6-3. Other Printed Wiring Boards 18
6-4. Schematic Diagram ~~~~~~~~~ 23
7. EXPLODED VIEWS -------------------- 28
8. ELECTRICAL PARTS LIST ~~~~~~~~~~~~ 34
Mounting Hatdwares ............................ 37

SAFETV- RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATIONr REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN !N THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

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 electrostatic breakdown because of the poten-
tial 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.

ATTENTION AU COMPQSANT AVANT RAPPORT
A LA SEcumTEI

LES composmrs IpENTIFrEs PAR UNE MAHOUE A
sun LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES SONT cnmouEs POUR LA sécumré
DE FONCTIONNEMENT. NE REMPLACER as com.
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.