Sony CD Walkman D-EJ100, Руководство по обслуживанию

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2
Specifications ............................................................................ 1
1. SERVICING NOTES
........................................... 3
2. GENERAL
Locating the Controls ...................................................... 3
3. DISASSEMBLY
3-1. Upper Lid ASSY, Cabinet (Upper) Sub ASSY,
Cabinet (Lower) ASSY ................................................... 4
3-2. MD ASSY (CDM-3325ER), Main Board ....................... 5
3-3. Motor ASSY (Sled) (M902),
Optical Pick-up (DAX-25E),
Turn Table Motor ASSY(Spindle) (M901) ..................... 6
4. ELECTRICAL ADJUSTMENS .......................... 7
5. DIAGRAMS
5-1. Block Diagram ................................................................ 8
5-2. Printed Wiring Boards –MAIN Section (Side A)– .......... 9
Printed Wiring Boards –MAIN Section (Side B)– .......... 10
5-3. Schematic Diagram –MAIN SECTION (1/3)– .............. 11
5-4. Schematic Diagram –MAIN SECTION (2/3)– .............. 12
5-5. Schematic Diagram –MAIN SECTION (3/3)– .............. 13
5-6. IC Pin Function Description ............................................ 16
6. EXPLODED VIEWS
6-1. Upper Lid Section ........................................................... 18
6-2. Cabinet Section ................................................................ 19
6-3. Optical pick-up Section (CDM-3325ER) ........................ 20
7. ELECTRICAL PARTS LIST ............................... 21
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
damaged by heat.
TABLE OF CONTENTS
CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.
D-EJ100/EJ101/EJ101CK/EJ106CK
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40
°
C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
°
C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
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
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.