Kenwood DV-403 Service Manual page 6

DV-403
2-3 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 working around
the optical pickup.
2-3-1 Static Electricity Countermeasure Methods
1. Ground yourself
Use an anti-static wrist strap to discharge static electrici-
ty 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.
2-3-2 Short-circuit the laser diode
Solder the land in the flexible cable of the optical pickup.
Notes
• Be sure to do this befer disconnecting the flexible cable
of the optical pickup from the module C.B.A.
• Use an anti-static soldering iron to short-circuit and
unshort-circuit laser diode.
(Recommended soldering iron: Hakko with ESD counter-
measure)
• After you have finished repairing the laser diode, follow
the correct procedure to remove the solder from the
short-circuit location. (Refer to page5/2. Assembling and
Disassembling the Optical Pickup (Mechanical Parts).)
6
DISASSEMBLY FOR REPAIR
2-4 Disassembling the Clamp Base Unit
Remove the 2 screws.
2-5 Disassembling the Clamper Weight, Clamper
Yoke, Magnet and Clamper
1. Release the tab, and pull out the clamper.
2. Release the 3 tabs on the clamper.