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- Pb free solder will tend to splash when heated too high (about
1100°F/ 600°C).
When soldering or unsoldering, please completely remove all of the
solder on the pins or solder area, and be sure to heat the soldering
points with the Pb free solder until it melts enough.
6. General Description
6.1. Operating instructions
7. PREVENTION OF STATIC ELECTRICITY
DISCHARGE
The laser diode in the traverse unit (optical pickup) may brake down due to static electricity of
clothes or human body. Use due caution to electrostatic breakdown when servicing and
handling the laser diode.
7.1. Grounding for electrostatic breakdown prevention
Some devices such as the DVD player use the optical pickup (laser diode) and the optical
pickup will be damaged by static electricity in the working environment. Proceed servicing
works under the working environment where grounding works is completed.
7.1.1. Worktable grounding
1. Put a conductive material (sheet) or iron sheet on the area where
the optical pickup is placed, and ground the sheet.
7.1.2. Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity
form your body.
7.1.3. Handling of optical pickup
1. To keep the good quality of the optical pickup maintenance parts
during transportation and before installation, the both ends of the
laser diode are short-circuited. After replacing the parts with new
ones, remove the short circuit accordingto the correct procedure.
(See this Technical Guide.)
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