Yamaha DVD-S840, Service Manual

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DVD-S840
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DVD-S840
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FRONT PANEL
2. Handling of the Optical Pickup
1. To prevent damage to the optical pickup replacement parts during transportation and before installation, both ends of the
laser diode are short-circuited. After installing the new part, remove the short circuit according to the correct procedure in
this service manual.
2. Do not use a tester to check the laser diode in the optical pickup. The power supply in the tester will damage the laser
diode.
3. Handling Precautions for the Traverse Unit (Optical Pickup)
1. Handle the traverse unit (optical pickup) 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.
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LOCALE MANAGEMENT INFORMATION
Locale Management Information : This DVD player is designed and manufactured to respond to the Locale Management
Information that is recorded on the DVD disc. If the Locale number described on the DVD disc does not correspond to the
Locale number of this DVD player, this DVD player cannot play this disc.
This product incorporates copyright protection
technology that is protected by method claims of
certain U.S. patents and other intellectual
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 viewing uses only unless
otherwise authorized by Macrovision Corporation.
Reverse engineering or disassembly is prohibited.