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SECTION
1
CFD-50
SERVICING
NOTES
NOTES
ON
HANDLING
THE
OPTICAL
PICK-
UP
BLOCK
OR
BASE
UNIT
The
laser
diode
in the optical pick-up
block
may
suffer electrostatic breakdown
because of the poten-
tial difference generated
by the charged electrostatic
load, etc. on clothing and the human body.
During
repair,
pay
attention
to electrostatic
break-
down
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.
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.
There-
fore, when
checking the laser diode emission, observe
more than 25 cm away from the objective lens.
Insert screwdriver and push S801.
CHUCK
PLATE
JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid,
use Chuck Plate Jig.
@
Code number of Chuck Plate Jig: X-4918-255-1
LASER
DIODE AND
FOCUS
SEARCH
OPERATION
CHECK
1,
Der
eae
t Ae | ae
ai
Make Function switch to CD position with no disc
inserted.
Open the lid for CD.
Turn on S801 as following figure.
Press ® key.
Confirm the laser diode emission while observing the
objecting lens. When there is no emission, Auto Power
Control circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus
serarch.
Yf.
~~
|
AS
S801
AL
2 7 .
eee
yvilty,
pe
a
laser diode
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