Panasonic DVD-S42PC, Service Manual

Page: 18 / 67

8.6. Optical Pickup Unit
8.6.1. Cautions to Be Taken in Handling the Optical Pickup Unit
The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.
Use due caution to electrostatic discharge damage when servicing the laser diode.
1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.
2. To prevent the laser diode from the electrostatic discharge damage, the Intermediate FFC of the optical pickup unit removed
from the PCB should be short-circuited with a short pin or a clip.
3. The Intermediate FFC may be cut off if an excessive force is applied to it. Use caution when handling the Intermediate FFC.
4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the
fIntermediate FFC, cut off the antistatic FPC.
18
DVD-S42PC / DVD-S422PC