Handling Precautions For Traverse Unit; Handling Optical Pickup; Replacing Precautions For Optical Pickup Unit; Grounding For Preventing Electrostatic Destruction - Panasonic SA-VK660GC Service Manual

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5 Handling Precautions for Traverse Unit

The laser diode used inside optical pickup could be destroyed due to static electricity as a potential difference is caused by

electrostatic load discharged from clothes or human body. Handling the parts carefully to avoid electrostatic destruction during

repair.

5.1.

1. Do not impact on optical pickup as the unit structurally uses an extremely precise technology.

2. Short-circuit the flexible cable of optical pickup remove from the circuit board using a short-circuit pin or clip in order to prevent

laser diode from electrostatic destruction (Refer to Fig. 3.1 and Fig. 3.2)

3. Do not handle flexible cables forcibly as this may cause snapping. Handle the parts carefully (Refer to Fig. 3.1)

4. A new optical pickup is equipped with an anti-static flexible cable. After replacing and connecting to the flexible board, cut the

anti-static flexible cable. (Refer to Fig. 3.1)

5.2.

Optical Pickup

The optical pickup by which part supply was carried out attaches the short clip to the flexible board for laser diode electrostatic

discharge damage prevention. Please remove the short clip and be sure to check that the short land is open, before connecting.

(Please remove solder, when the short land short-circuits.)

5.3.

1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity accumulated in your body. (Refer to Fig. 3.2)

2. Work place grounding

Place a conductive material (conductive sheet) or ironboard where optical pickup is placed. (Refer to Fig. 3.2)

Note :

Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes.

Fig 3.1

Fig. 3.2

SA-VK660GC / SA-VK660GS / SA-VK660GCS / SA-VK660GCT

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