D-EJ119/EJ120/EJ121
Ver. 1.2
CAUTIONTABLE OF CONTENTS
YINVISIBLE LASER RADIATION WHEN OPEN
Y DO NOT STARE INTO BEAM OR VIEW DIRECTLY Specifications ............................................................................ 1
WITH OPTICAL INSTRUMENTS
YCLASS 1M INVISIBLE LASER RADIATION WHEN OPEN 1.SERVICING NOTE...................................................3
Y DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS
2.GENERAL...................................................................4
CAUTION
3.DISASSEMBLY
Use of controls or adjustments or performance of procedures3-1. Disassembly Flow ........................................................... 5
other than those specified herein may result in hazardous
3-2. Upper Lid Assy, Cabinet (Upper) Assy,
radiation exposure.Cabinet (Lower) Assy...................................................... 5
3-3. CD Mechanism Deck (CDM-3325ERV), Main Board ... 6
Flexible Circuit Board Repairing3-4. Motor Assy (Sled) (M901), Optical Pick-Up
Y Keep the temperature of the soldering iron around 270°C(DAX-25EV), Turn Table Motor Assy
during repairing.(Spindle) (M902) ............................................................. 7
Y Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).4.ELECTRICAL ADJUSTMENT.............................8
Y Be careful not to apply force on the conductor when soldering
or unsoldering.
5.DIAGRAMS
5-1. Block Diagrams ............................................................... 9
Notes on chip component replacement
5-2. Printed Wiring Boards � Main Board (Side A) � ............ 10
Y Never reuse a disconnected chip component.5-3. Printed Wiring Boards � Main Board (Side B) � ............ 11
Y Notice that the minus side of a tantalum capacitor may be
5-4. Schematic Diagram � Main Board (1/3) � ...................... 12
damaged by heat.5-5. Schematic Diagram � Main Board (2/3) � ...................... 13
Notes on the AC power adaptor5-6. Schematic Diagram � Main Board (3/3) � ...................... 14
5-7. IC Pin Function Description ............................................ 18
Y Use only the supplied AC power adaptor. Do not use
any other AC power adaptor.
6.EXPLODED VIEWS
6-1. Upper Lid Section ........................................................... 20
Polarity of
the plug6-2. Cabinet Section................................................................ 21
6-3. Optical Pick-Up Section (CDM-3325ERV) .................... 22
Y Connect the AC power adaptor to an easily accessible
AC outlet. Should you notice an abnormality in the AC7.ELECTRICAL PARTS LIST..................................23
power adaptor, disconnect it from the AC outlet
immediately.
Y Do not touch the AC power adaptor with wet hands.
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
SAFETY-RELATED COMPONENT WARNING!!
Unleaded solder has the following characteristics.
YUnleaded solder melts at a temperature about 40°C higher thanCOMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
ordinary solder.LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
Ordinary soldering irons can be used but the iron tip has to be
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
applied to the solder joint for a slightly longer time.APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
Soldering irons using a temperature regulator should be set toPUBLISHED BY SONY.
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
Y Strong viscosityATTENTION AU COMPOSANT AYANT RAPPORT
� LA S?CURIT?!
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridgesLES COMPOSANTS IDENTIF?S PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCH?MATIQUES ET LA LISTE DES PIéCES SONT
occur such as on IC pins, etc.CRITIQUES POUR LA S?CURIT? DE FONCTIONNEMENT. NE
Y Usable with ordinary solder
REMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY
It is best to use only unleaded solder but unleaded solder mayDONT LES NUM?ROS SONT DONN?S DANS CE MANUEL OU
also be added to ordinary solder.DANS LES SUPP?MENTS PUBLI?S PAR SONY.
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ACEC
