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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
-K eep 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 (Low er) 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 (Low er) 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/RWsThis 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.
Ver 1.1
A TTENTION AU COMPOSANT AYANT RAPPORT
- 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
D ANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
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D-NE270
System requirements
The following hardware and software specifications are required in order\
to use the SonicStage
Simple Burner software.Computer IBM PC/AT or Compatible ¥CPU: Pentium II 300 MHz or higher (Pentium III 600 MHz or higher is
recommended.)
¥ Hard disk drive space: System folder (on boot disc) Ð 200 MB or mor\
e/
Temporary folder Ð 200 MB or more (The amount of free space
required differs according to the size of the audio files that you want \
to
handle. 1.5 GB of free space or more is recommended.)
¥ RAM: 64 MB or more (128 MB or more is recommended)
Others ¥ CD-R/RW drive (capable of digital playback by
WDM)
¥ Sound Board
Operating System Factory installed:
Windows XP Home Edition/Windows XP Professional/Windows
Millennium Edition/Windows 2000 Professional/Windows 98 Second
Edition
Display High Color (16 bit) or higher, 800 × 600 dots or betterOthers ¥ Internet access: for Web registration and CDDB services
¥Adobe Acrobat Reader installed for viewing the PDF manual
This software is not supported by the following environments:¥ NEC PC-98 series or compatible machines, Macintosh systems
¥ Windows XP versions other than Home Edition or Professional
¥ Windows 2000 versions other than Professional
¥ Windows 98 versions other than Second Edition
¥ Windows NT
¥ Windows 95
¥ Personally constructed PCs or operating systems
¥ An environment that is an upgrade of the original manufacturer-installed\
operating system
¥ Multi-boot environment
¥ Multi-monitor environment
Notes
¥ We do not ensure trouble-free operation on all computers that satisfy th\
e system requirements.
¥ We do not ensure trouble-free operation of the system suspend, sleep, or\
hibernation function on all
computers.
3. Push the N X button.
4. Observing the objective lens, check that the laser diode emits light.
When the laser diode does not emit light, automatic power
control circuit or optical pick-up is faulty.
In this operation, the objective lens will move up and down 4
times along with inward motion for the focus search.
SECTION 1
SERVICING NOTES
T he laser diode in the optical pick-up block may suffer electro-
static breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
T he flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
BEFORE REPLACING THE OPTICAL PICK-UP BLOCK
Please be sure to check thoroughly the parameters as par the Op-
tical Pick-Up Block Checking Procedures (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
- FOK output: IC601 yg pin
W hen checking FOK, remove the lead wire to disc motor.
- RF signal P-to-P value: 0.45 to 0.65 Vp-p
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S820. (push switch type)
T he following checking method for the laser diode is operable.
- Method:
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. With a disc not set, turn on the S820 with a screwdriver having a thin tip as shown in Fig.1.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
Fig. 1 Method to push the S820
S820 detection lever
detection lever
MAIN board
-In performing the repair with the power supplied to the set, re-
moving the MAIN board causes the set to be disabled.
In such a case, make a solder bridge to short SL825 (OPEN/
CLOSE DETECT) on the MAIN board in advance.
- MAIN Board (Component Side) -
SL825
(OPEN)
