Prevention Of Electrostatic Discharge; Region Management Information - Yamaha DVD-S663 Service Manual

DVD-S663/DV-S6165
I PREVENTION OF ELECTROSTATIC DISCHARGE
The laser diode in the DVD mechanism may be damaged due to static electricity from clothes or the human body. Use caution
to prevent electrostatic damage when servicing or handling the DVD-mechanism.
1. Grounding for electrostatic damage prevention
Some devices, such as the DVD player, use an optical pickup (laser diode) that will be damaged by static electricity in the
working environment. Only attempt service after ensuring that all grounding procedures have been completed.
1. Worktable grounding
Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed.
2. Human body grounding
Use an anti-static wrist strap to discharge the static electricity from your body.
Anti-static wrist strap
2. Handling Precautions for DVD mechanism
1. Handle the DVD mechanism gently, as it is an extremely high-precision assembly.
2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable.
3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor.
I REGION MANAGEMENT INFORMATION
Region Management Information: This DVD player is designed and manufactured to respond to the Region Management
Information that is recorded on a DVD disc. If the Region number described on the DVD disc does not correspond to
the Region number of this DVD player, this DVD player cannot play this disc.
This product incorporates copyright protec-
tion technology that is protected by method
claims of certain U.S. patents and other in-
tellectual property rights owned by Macrovision
Corporation and other rights owners. Use of
this copyright protection technology must be
authorized by Macrovision Corporation, and
is intended for home and other limited view-
ing uses only unless otherwise authorized
by Macrovision Corporation. Reverse engi-
neering or disassembly is prohibited.
4
1M-ohms
1
2
4
Conductive material
(sheet) or steel sheet
5
2
6
3
5
2
2
4