2
D-NE270
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.
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.
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
4
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
5
3-2. Cabinet (Lower) Section .................................................
5
3-3. Optical Pick-up Assy (CDM-3325ERV) ........................
6
3-4. MAIN Board ...................................................................
6
3-5. Liquid Crystal Display Panel (LCD2001),
SWITCH Board ...............................................................
7
4.
TEST MODE
..............................................................
8
5.
ELECTRICAL CHECK
..........................................
9
6.
DIAGRAMS
6-1. Block Diagram ................................................................ 10
6-2. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 11
6-3. Printed Wiring Board
– MAIN Board (Component Side) – .............................. 12
6-4. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 13
6-5. Schematic Diagram – MAIN Board (1/4) – .................. 14
6-6. Schematic Diagram – MAIN Board (2/4) – .................. 15
6-7. Schematic Diagram – MAIN Board (3/4) – .................. 16
6-8. Schematic Diagram – MAIN Board (4/4) – .................. 17
6-9. Printed Wiring Board – SWITCH Board – ................... 18
6-10. Schematic Diagram – SWITCH Board – ...................... 19
7.
EXPLODED VIEWS
7-1. Cabinet (Inner) Section ................................................... 26
7-2. Cabinet (Upper) Section ................................................. 27
7-3. Cabinet (Lower) Section ................................................. 28
7-4. Optical Pick-up Section (CDM-3325ERV) .................... 29
8.
ELECTRICAL PARTS LIST
............................... 30
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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.
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 viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges oc-
cur 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.
On AC power adaptor
¥ Use only the AC power adaptor supplied.
If your CD player is not supplied with the
one, use the AC-E45HG AC power
adaptor. Do not use any other AC power
adaptor. It may cause a malfunction.
Polarity of the plug
About CD-Rs/RWs
This CD player can play CD-Rs/RWs recorded in the ATRAC3plus/ATRAC3, MP3 or CDDA*
format, but playback capability may vary depending on the quality of the disc and the condition
of the recording device.
* CDDA is the abbreviation for Compact Disc Digital Audio. It is a recording standard used for the Audio
CDs.
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.
