Handling The Optical Pick-Up - Sony SLV-D940P AZ Service Manual

4 HANDLING THE OPTICAL PICK-UP

The laser diode in the optical pick up may suffer electrostatic
breakdown because of potential static electricity from clothing and
your body.
The following method is recommended.
(1) Place a conductive sheet on the work bench (The black sheet used
for wrapping repair parts.)
(2) Place the set on the conductive sheet so that the chassis is grounded
to the sheet.
(3) Place your hands on the conductive sheet (This gives them the
same ground as the sheet.)
(4) Remove the optical pick up block
(5) Perform work on top of the conductive sheet. Be careful not to let
your clothes or any other static sources to touch the unit.
Be sure to put on a wrist strap grounded to the sheet.
Be sure to lay a conductive sheet made of copper etc. Which is
grounded to the table.
THE UNIT
(6) Short the short terminal on the PCB, which is inside the Pick-Up
ASS'Y, before replacing the Pick-Up. (The short terminal is shorted
when the Pick-Up Ass'y is being lifted or moved.)
(7) After replacing the Pick-up, open the short terminal on the PCB.
WRIST-STRAP
FOR GROUNDING
1M
CONDUCTIVE SHEET
1M
Fig.3
— 9 —