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vibration, or other types of rough handling.
2. In order to prevent static electricity damage to the laser diode,
use a short pin or similar tool to short the optical pickup’s flexible
circuit boards after they have been disconnected from the main
circuit board. (as shown in
Fig. 1
)
3. Handle the flexible circuit boards with care; excessive force could
cause them to be broken.
4. Do not turn the pre-set variable resistor (for adjustment of the
laser power); it has been adjusted at the factory.
(as shown in
Fig. 2
)
Fig. 1
Fig. 2
4.2. Grounding for electrostatic breakdown prevention
1. Human body grounding
Use the anti-static wrist strap to discharge the static electricity
from your body. (as shown in
Fig. 3
)
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.
5