Panasonic SJ-MR220 Service Manual page 6

4.1. Handling the traverse deck (optical pickup)
1. The traverse deck (optical pickup) is an extremely high-precision
construction and must not be subjected to impact, excessive
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
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
4.2. Grounding for electrostatic breakdown prevention
Fig. 1)
Fig. 2)
Fig. 1
Fig. 2
6