Mechanism Description - Kenwood DV-5700 Service Manual

DV-5700/DVF-R9050/R9050-S
1. Assembling and Disassembling the Optical
Pickup (Mechanical Parts)
The optical pickup can be damaged by static electricity
from your body.
Be sure to take static electricity countermeasures when
working around the optical pickup.
1-1 Handling the Optical Pickup
1. The optical pickup is an extremely high-precision
mechanism. Do not subject it to strong damage.
2. Testers cannot be used to check the laser diode of
the optical pickup. The power supply in side the
tester can easily damage the laser diode.
3. Take care when handling the flexible cable because
excessive force can cause it to break.
4. To preserve the quality of the optical pickup replace-
ment parts during transport and installation, the termi-
nals of the laser diode are short-circuited. After
replacing the parts, use the proper procedure to
return the laser diode to its original condition.
1-2 Static Electricity Countermeasures
The laser diode inside the traverse unit (optical pickup )
can be damaged by static electricity from your body. Be
sure to take static electricity countermeasures when work-
ing around the optical pickup.
1-2-1 Static Electricity Countermeasure Methods
1. Ground yourself
Use an anti-static wrist strap to discharge static elec-
tricity from your body.
2. Ground the workbench
Lay a conductive material (sheet) or steel sheet on
the surface where the traverse unit (optical pickup) is
to be placed, then ground the sheet.
22

MECHANISM DESCRIPTION

Fig. 1
1-2-2 Assembling the Optical Pickup
1. Insert a flexibe cable in the arrow direction in the
drawing.
2. Cut the flexible cable.
Pickup unit
Fiexible cable
from the
Intermediate
P. C. B.
Fig. 2
1-3 Disassembling the Clamper Assembling
1. Remove the 2 screws.
Fig. 3
CUT
Flexible cable for
Static Electricity
Countermeasures
SCREWS