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11
7 Handling Precautions For Traverse Deck
The laser diode in the optical pickup may break down due to potential difference caused by static electricity of clothes or human
body.
So be careful of electrostatic break down during repair of the optical pickup.
body.
So be careful of electrostatic break down during repair of the optical pickup.
7.1.
Handling Of Optical Pickup
1. Do not subject the 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 (FPC Board).
2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FPC Board).
When removing or connecting the short pin, finish the job in as short times as possible.
3. Be careful not to apply excessive stress to the flexible board (FPC Board).
4. Do not turn the variable resistor (Laser power adjustment). It has already been adjusted.
4. Do not turn the variable resistor (Laser power adjustment). It has already been adjusted.
7.2.
Grounding For Electrostatic Breakdown Prevention
1. Human body grounding
Use the antistatic 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 optical pickup is placed and ground the sheet.
Caution:
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 optical pickup.
the optical pickup.
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