Sony CD Walkman D-EG7, Руководство по обслуживанию

Страница: 2 / 25

– 2 –
Specifications ............................................................................ 1
1. SERVICING NOTES
.................................................... 3
2. GENERAL
Locating the Controls ......................................................... 4
3. DISASSEMBLY
3-1. Upper Lid ASSY ......................................................... 5
3-2. Cabinet (Front), Cabinet (Rear) .................................. 5
3-3. MD ASSY ................................................................... 6
3-4. Spindle Motor (M902), Optical Pick-up,
Sled Motor (M901) ..................................................... 6
3-5. Main Board ................................................................. 6
4. SERVICE MODE
........................................................... 7
5. ADJUSTMENS
.............................................................. 8
6. DIAGRAMS
6-1. Explanation of IC Terminals ...................................... 11
6-2. Block Diagram .......................................................... 13
6-3. Printed Wiring Boards .............................................. 16
6-4. Schematic Diagram ................................................... 19
7. EXPLODED VIEWS
7-1. Cabinet (Front) Section ............................................ 28
7-2. Cabinet (Rear) Section .............................................. 29
7-3. Optical pick-up Section (CDM-2911AAA) .............. 30
8. ELECTRICAL PARTS LIST
.................................... 31
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
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.
Flexible Circuit Board Repairing
• Keep the temperature of the 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.
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.
TABLE OF CONTENTS
This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label 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.
Laser component in this product is capable of emitting
radiation exceeding the limit for Class 1.
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.