Sony CDP-295 - Safety and Handling Precautions; Safety Component Warnings and Laser Protection; Optical Pick-Up Handling and Safety Checks

cDP-l9512951491
SAFETY-RELATED COMPONENT
WARNING!!
coMpoNENTs
TDENTTFTED By MARK
A on
oorrED
LINE
WITH MARK A' ON
THE
SCHET'/IATIC DIAGRAMS AND IN
TI{E 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.
PROTECTION OF EYES FROM I.ASER BEAM
This set cmploys
a
laser. Therefore,
be surc to follow carefully the
instructions
below
when
servicing.
CAUTION
Use of controls or adjustments
or
performance
of
procedures
other than those specified
herein
may result in hazardous
radiation
exposure.
NOTES ON HAI\TDUNG
THE OPnCAT PICK.UP
BLOCK
OR
BASE
UNIT
The laser
diode in the
optical
pick-up
block may
suffer elecrostatic
brcakdown because
of the
poæntial
difference
generated
by the
charged
elecrostatic load,
etc. on cloùring
and the human
body.
During repair,
pay
afiention
to electrostatic
breakdown
and also use
the
procedure
in
the
printed
matter
which is
included in
the repair
parts.
The flexible
board is
easily damaged
and should
be handled
with
care.
ATTENTION AU
COMPOSANT
AYANT RAPPORT
À m
sÉcunrrÉr
LES
COMPOSANTS
IDENTIFTÉS PAR UNE MAROUE
A
SUR
LES DIAGRAMMES SCHEMATIOUES ET LA LISTE DES
PIÈCES
SONT CRITIOUES
POUR LA SÉCURITÉ DE
FONC.
TIONNEMENT. NE REMPLACER CES COMPOSANTS OUE
PAR
DES
PIÈCES
SONY
DONT
LES
NUMÉROS
SONT
DONNÉS
DANS
CE
MANUEL
OU
DANS LES SUPPLEMENTS PUBLIES
PAR SONY.
DURING
SERVICING
Laser Diode
hoperties
o
Materiai: GaAlAs
.
Wavelenglh: 780nm
o
Emission Duration:
continuous
.
Laser
Outpuc
max.44.6pW*
*
This
output is the
value
measured at a distance of about
200mm from the objective lens surface
on
the
Optical
Pick-up
Block.
During
service, do not take the
Optical Pick-up Block apart,
and
do not
adjust the APC circuit. If ùere is a
breakdown
in
the APC
circuit
(including
laser diode), replace
the entire Optical Pick-
up Block
(including
APC
borad).
TABLE
OF
CONTENTS
Page
Section
Title
Page
5.
EXPLODED
VIEWS
l.
2.
Section
Title
1.
GENERAL
Location of
Controls...
2.
ELECTRICAL
BLOCK
CHECKING
3. DISASSEMBLY
OF
BASE
UNtt...........
4.
DIAGRAMS.
4
4
I
I
24
4-1 . Pin Function
of
1C101
and
1C401
-2-
6. ELECTRICAL
PARTS
LtsT
..............................
28