CD PICKUP REPLACEMENT
Precautions
To prevent damage caused by static electricity, the following procedures for grounding is required when opening
or repairing the unit.
Short-pad on pickup PCB
[Note] After the wire connector is
connected, desolder( short-pad).
1. Grounding for the human body
Be sure to put on a wrist-strap for grounding (with impedance lower than 10
6
Ω) whose other end is grounded.
The strap works to drain away the static electricity build-up on the human body.
2. Grounding for the work table
Be sure to lay on the table a conductive sheet (with impedance lower than 10
6
Ω) such as a sheet of copper
which is grounded.
3. As static electricity build-up on clothes is not drainded away, be careful not to let your clothes touch the unit.
4. The short-pad on the pick-up PCB of a spare part is short-circuited for protection during shipment. To open
the short circuit, remove the soldering quickly with a soldering iron whose insulation resistance is larger than
10MΩ after connection to a suitable APC circuit.
Pickup
1. Wrist-Strap
for grounding
1MΩ
2. Conductive Sheet
5
1MΩ
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