Technics SL-P111 - Page 7

@
HANDLING
PRECAUTIONS
FOR
OPTICAL
PICKUP
The
laser
diode
in
the
optical
pickup
may
break
down
due
to
potential
difference
caused
by
static
electricity
of
clothes
or
human
body.
So,
be
careful
of
electrostatic
breakdown
during
repair
of
the
optical
pickup.
© Handling of optical pickup
1.
Do
not
give
excessive
shock
to
the
optical
pickup
because
it
is
of
extremely
precise
structure.
2.
To
prevent
the
breakdown
of
the
laser
diode,
an
anti-
static
shorting
pin
is
inserted
into
the
flexible
board.
(FPC
board)
When removing or connecting the short pin, finish the
job in as short time as possible.
3. Take care not to apply excessive stress to the flexible
board. (FPC board)
4. Do not turn the variable resistor (laser power adjust-
ment). It has already been adjusted.
Optical pickup
Lens (Do not touch)
FPC board
(Handle it carefully)
Variable resistor ; .
(Do not turn) Be sure to short this portion
(Use the shorting pin or clip.)
Clip Shorting pin
© Grounding for electrostatic breakdown prevention
1. Human body grounding
Use the anti-static wrist strap to relieve the static
electricity from your body.
2. Work table grounding
Put a conductive material (sheet) or steel sheet on the
area
where
the optical
pickup
is
placed,
and
ground
the
Wrist
strap
sheet.
(Anti-static
bracelet)
Caution:
The static electricity of your clothes will not be grounded
through the wrist strap. So, take care not to let your
clottes touch the optical pickup.
1MQ
Iron plate or some metals
to conduct electricity.
m@ DISASSEMBLY INSTRUCTIONS
CAUTION:
e It is very dangerous to look at or touch laser radiation. (Laser radiation is invisible.)
e With the unit turned “on”, laser radiation is emitted from the pickup lens.
e When doing the job, removing the cabinet and disc clamper of this unit, be sure to turn the power supply off.
Ref. No.
Ref-No.
|
How
to
remove
the
cabinet
4
1
Procedure Procedure
1 ® Remove the 4 screws. 49204
How to remove the main P.C.B.
1. Remove the 4 screws.
2. Lift the P.C.B. to remove it from the
chassis tabs.
3. Remove in the direction of the arrow.
Note: When doing the job, lock the
lock shaft at bottom of the unit.
(See page 4).
Ref. No.
2
Procedure
192
Ref. No.
5
he terminals of FL.
1.
Remove
the
screw
@.
Procedure
|
1.
Unsoldert
2.
Slightly
pull
the
tabs
outward
(arrows
®).
|1%2%4%5]
2.
Remove
FL
from
the
P.C.B.
. ; . 3. Release the claws of FL holder and
3. Remove in the direction of the arrow ©. remove itto (eitiove the aWwilches
How to remove the front panel How to remove the F.L
Key switch
r Ref.No. | How to remove the operation | Ref. No. How to remove the disc clamper
3 button 6
|
Procedure
1.
Remove
the
screw
and
button
Procedure
©
Remove
the
screw.
19263
holder.
oe
2. Release the 8 claws.
Ra"
Disc
clam
as
Tele