Panasonic SA-AK520E Service Manual page 8

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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 Traverse Deck :
The traverse deck has a short point shorted with solder to protect
the laser diode against electroststics breakdown. Be sure to
remove the solder from the short point before making connections.
7. 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
W/VDE / Laser radiation from pick up unit is safety level,
but be sure the followings:
1. Do not disassemble the optical pick up unit, since radiation from
exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pick up unit. It was
already adjusted.
3. Do not look at the focus lens using optical instruments.
Fig 6-2
8

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