Panasonic SJ-HD515, Service Manual

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caused by static electricity of clothes or human body. So be careful of electrostatic breakdown
during repair of the MD unit (optical pickup).
4.1. Handling of MD Unit (optical pickup)
1. Do not subject the MD unit (optical pickup) to static electricity as
it is extremely sensitive to electrical shock.
2. To protect the breakdown of the laser diode, an anti-static
shorting pin is inserted into the flexible board (FPC board). Refer
to
Fig. 4-1.
3. Take care not to apply excessive stress to the flexible board (FPC
board).
Fig. 4-1.
4.2. Grounding for electrostatic breakdown prevention
4.2.1. Human body grounding
Use the anti-static wrist strap to discharge the static electricity from your body. Refer to Fig. 4-2.
Fig. 4-2.
4.2.2. Work table grounding
Put a conductive material (sheet) or steel sheet on the area where the MD unit (optical pickup)
is placed, and ground the sheet. Refer to
Fig. 4-3.
Fig. 4-3.
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