Sony cdp x7esd service manual

Page 2

CDP-X7ESD

TABLE OF CONTENTS

Section Title Page
Specifications ....................... 1
Before Use (Transportation Screw) ......... 2
1. SERVICING NOTES
Model Identification ............... 3
Safety Check-out ................. 3
Protection of Eyes from Laser Beam
during Servicing .................. 4
Notes on Handring the Optical Pick-up
Block or Base Unit ................ 5

Notes on Laser Diode Emission Check i . . 5
Laser Diode and Focus Search

Operation Check ................. 5
2. GENERAL

Location of Controls ............... 6
3. ELECTRICAL ADJUSTMENTS ....... 10

Section Title Page
4. DIAGRAMS
4-1. Circuit Boards Location ............. 12
4-2. BU10A(Base Unit) Section

Printed Wiring Boards .............. 13
4-3. Semiconductor Lead Layouts ......... 14
4-4. Main Section Printed Wiring Boards ..... 16
4-5, Schematic Diagram ................ 21
5. EXPLODED VIEWS ............... 27
6. ELECTRICAL PARTS LIST ......... 34

Before starting any operation, be sure to release the

transportation screw (for protection of the laser pickup and
internal mechanism) located on the bottom of the unit. Turn
this screw in the direction of the arrow, following the Caution

Sheet attached to the bottom plate. To release the
transportation screw, open the cap and turn the screw
counterclockwise 180 degrees using the provided

screwdriver. Be careful not to turn the screw too far, as it

could damage the internal mechanism or cause a

malfunction. Before transporting this unit, tighten the screw

firmly.

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BV MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB«
LISHED BY SONY.

When rotating the screw
be sure to place the unit
upside down

Caution Sheetlon the bottom plate)

ATTENTION AU COMPOSANT AYANT RAPPORT

A LA sécunlréi

LES composmrs IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES ET LA uer
DES PIECES sour camouEs POUR LA sécunné
DE FDNCTIONNEMENT. NE REMPLACER ces com
POSANTS oue PAR DES PIECES somr DONT LES
muménos som oomués DANS c5 MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR souv.