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WN
@
How to remove the turntable
. Remove the traverse unit.
. Remove the spindle motor drive coil P.C.B.
. Remove the C ring which fastens the magnet shaft of
spindle motor, [Fig. 22]
. Remove the screw [Fig. 22: @)] by use of a hexagonal
wrench, then the turntable can be removed.
*If the turntable
is removed,
it is necessary to re-adjust
the height of turntable.
WH
6
5.
How to remove the laser pickup
. Remove the traverse unit.
. Remove the optical servo P.C.B.
. Pull
out
the connectors
(CN101,
CN102)
of optical
servo P.C.B.
. Remove the bracket setscrew
[Fig. 21:
@)] of pickup
to remove the bracket.
Remove the guide rail retainer setscrew
[Fig. 22 : @ )
and pull out the laser pickup from the two guide rails.
*The
pickup
must
be re-adjusted
when
it is replaced or
fitted after removal.
e How
to remove
the bottom
cover
of remote
control unit
. Remove the battery cover in the direction of the arrow
and take out the batteries.
. Remove the bottom cover setscrew.
(Fig. 23:
@)
. Insert a screwdriver between
bottom and top covers to
release them little by little.
. Releasing the periphery of cover in a similar manner,
remove the bottom cover.
(Portions 1 ~ 4)
Shaft cover
Spring
Turntable
Laser Pick-up
[
Replacing procedure
ar
Cautions
ET.
1
Reduce the amount of solder on each
pin of the integrated circuit by use of
a solder sucker.
Solder
sucker
Spare
chip
2 | Melt the solder on the pin (one
electrode) with the soldering iron.
. Completely
remove
the
solder
. Raise
each
pin
by
means
of
pe
pe
3
While the solder is melting, shift the
pin upward by the soldering iron to
remove it from the foil.
AWS
ae
—
4
Remove each pin from the foil
according to the above-mentioned
procedure.
Recommended
tool
wsameeneyed Special soldering iron
(with spare chip) HM-354
Do not touch the soldering iron to
the area for a long time. It may
otherwise cause removal of the print
foil.
When shifting the pin upward, do
the job quickly while the solder
is melting. If the solder is hard, it
may cause removal or breakage of
the print foil.
When using a pencil type solder-
ing iron.
from
each
IC
pin
by
use
of
solder sucker.
an
eyeleteer,
hold
the
pliers
then
remove
IC package
from
P.C.B.
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