Sony CD Walkman D-E551, Service Manual

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TABLE OF CONTENTS
1. SERVICING NOTES
................................................ 3
2. GENERAL
................................................................... 5
3. DISASSEMBLY
......................................................... 8
4. SERVICE MODE
...................................................... 11
5. TEST MODE
.............................................................. 12
6. ELECTRICAL ADJUSTMENTS
......................... 15
7. DIAGRAMS
7-1. IC Pin Function Description ........................................... 21
7-2. Block Diagram – CD Section – ..................................... 23
7-3. Block Diagram – Main Section – ................................... 27
7-4. Printed Wiring Boards – MAIN/JACK Boards – .......... 31
7-5. Schematic Diagram – MAIN/JACK Boards – .............. 35
7-6. Printed Wiring Boards – LCD/KEY Boards – .............. 40
7-7. Schematic Diagram – LCD/KEY Boards – ................... 45
8. EXPLODED VIEWS
................................................ 53
9. ELECTRICAL PARTS LIST
............................... 57
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.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS 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
0
OR DOTTED
LINE WITH MARK
0
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 PUB-
LISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
HOW TO CHANGED THE CERAMIC FILTERS
This model is used two ceramic filters of CF1 and CF3.
You must use same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.