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SECTION
1
CFD-20/30
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.
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
Removing the chuck plate
The chuck plate of this unit can be removed and used as a chuck
plate jig.
:
1. Pull the chuck plate in the direction A.
2. Press the claw of the CD cover, and remove the chuck plate
in
direction B.
CD cover
f
ES
]
A
Me ih |
y P/E
LZ /
x
chuck plate
BLL
\A
\
\
\
(EZ
claw
LASER
DIODE AND FOCUS SEARCH
OPERATION
CHECK
1.
Make Function switch to CD position with no disc
inserted.
Open the lid for CD.
Tum on S810 as following figure.
Press > key.
ue
BO
SS
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.
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