Panasonic SA-AK250PL, Руководство по обслуживанию

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3 Handling Precautions For Traverse Unit
The laser diode in the traverse unit (with optical pickup) may break down due to potential difference caused by the static electricity
of clothes or our human body.
So, be careful of electrostatic breakdown during repair of the traverse unit (with optical pickup).
· Way of handling the traverse unit (with optical pickup)
1. Do not subject the traverse unit (with optical pickup) to static electricity as it is extremely sensitive to electrical shock.
2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board).
3. Do not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish the job
in as short time as possible.
4. Do not turn the variable resistor for laser power adjustment. (It is pre-adjusted during production time)
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 unit (with optical pickup) is place, 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 unit (with optical pickup).
Caution when replacing the Traverse Unit
The traverse unit 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.
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SA-AK250PL