Technics RS-DV290EG Service Manual page 184

Cautions to be taken when replacing the optical pickup
The optical pickup may break down due to the static electricity of human body. Take proper
protection measures against static electricity before repairing the parts around the optical pickup.
1. Do not touch the areas around the laser diode and actuator.
2. Do not judge the laser diode with a tester. (The tester will be
damaged easily.)
3. It is recommended to use a destaticized soldering iron for short-
circuiting or removing the laser diode. (Recommended soldering
iron) HAKKO ESD Product
4. Solder the land of the flexible cable in the optical pickup.
Note:
- When using a soldering iron which is not destaticized, short-circuit
the terminal face of the flexible case with a clip. After that, short-
circuit the land.
- After the repairing work is completed, remove the solder according
to the correct procedure shown in this Technical Guide.
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