Grounding For The Human Body; Grounding For The Work Table - Sony CDU31A Series Service Manual

Note: Note on Repairing Optical Device (KSM-360ABM)
or Base Unit.
When opening or repairing the unit, grounding is required
to prevent damage caused by static electricity and is as
follow:
I. G1"9unding for the human body
Be su.:C to wear a wrist-strap for grounding (with
impedance lower than IO" Q) whose other end is
ground. The strap works to drain away static electricity
build-up on the human body.
x
Optical Device
4. After connection to the MA-l/MA-2 Mounted Board,
to open the LO short land, remove the soldering
quickly with a soldering iron whose insulation
resistance is larger than I 0 M
Q.
LD Short land
2. Grounding for the work table
Be sure to lay a conductive sheet (with impedance
lower than
Io•
Q ) on the table, such as a sheet of
copper, which is ground.
3. As static electricity build-up on clothes is not drained
away, be careful not to let your clothes touch the unit.
(D Wrist.Strap
for grounding
Conductive aheet
or copper plate