Panasonic SA-HT535E, Service Manual

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7.2. Cautions to Be Taken During Replacement of Optical Pickup
Supplied optical pickup is equipped with a short clip found at the end of flexible cable in order to prevent electrostatic destruction
of laser diode. Before connection, remove the short clip, and check that the short land is opened (remove solder if the part is short-
circuited). Also ensure human body is properly ground (Refer Section 7.3)
7.3. Grounding for Preventing Electrostatic Destruction
1. Human body grounding
Use an anti-static wrist strap to release static electricity accumulated in your body. (Refer to Fig. 7-3)
2. Workplace grounding
Place a conductive material (conductive sheet) or iron board where optical pickup is placed. (Refer to Fig. 7-3)
Note:
Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes.
Fig. 7-3
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SA-HT535E / SA-HT535EG