Panasonic SJ-MJ55GH, Руководство по обслуживанию

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3. Operating Instructions
4. Handling Precautions for MD Mechanism (Optical
pickup)
The laser diode in the MD mechanism (optical pickup) may break down due to potential
difference caused by static electricity of clothes or human body.
So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
4.1. Handling the MD mechanism (optical pickup)
1. The MD mechanism (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
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