Panasonic SA-PM65MD Service Manual page 7

Grounding for electrostatic breakdown prevention
1. Human body grounding
Use the anti-static wrist strap to discharge the static electricity
from your body.
2. Work table grounding
Put a conductive material (sheet) or steel sheet on the area where
the traverse deck (optical pickup) is placed, and ground the sheet.
Caution :
The static electricity of your clothes will not be grounded through
the wrist strap. So, take care not to let your clothes touch the
traverse deck (optical pickup).
Caution when Replacing the Optical Pickup :
The traverse has a short point shorted with solder to protect the
laser diode against electrostatics breakdown. Be sure to remove
the solder from the short point before making connections.
5. Precaution of Laser Diode
Caution :
This product utilizes a laser diode with the unit turned "ON",
invisible laser radiation is emitted from the pick up lens. /
Wavelength : 780 nm / Maximum output radiation power from pick
up : 100 mW/VDE / Laser radiation from pick upunit is safety level,
but be sure the followings:
1. Do not disassemble the optical pick up unit, since radiation from
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