Yamaha DV-C6860 - DVD Changer, Service Manual

DV-C6860

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DV-C6860

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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.

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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 a 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.

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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

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.

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.

1M

Ω

Conductive material
(sheet) or steel sheet

Anti-static wrist strap