NEC 128 manual Maintenance Requirements, 4-2Installation & Maintenance

4-2 Installation & Maintenance

Maintenance Requirements

There are no user serviceable (see Note) components, modules, or circuits inside the VisuaLink units. If experiencing problems, follow these guidelines:

•Ensure a power source is connected to the VisuaLink unit and the power control is set to on.

•Check all connections to the VisuaLink unit. Sometimes the wrong cable may be connected or perhaps loosely plugged-in.

•Make sure all cables used in a VisuaLink configuration are working properly, with no broken wires or connectors.

•Ensure all settings and parameters for VisuaLink operation are correctly set via the on-screen menus.

•Verify the VisuaLink unit has adequate ventilation. (see previous section-- Installation Requirements)

Note: A user can unpgrade a VisuaLink 128 to a VisuaLink 384. Refer to the VisuaLink Quick Installation Guide, Stock # 0293885.

If problems still exist after completing the maintenance guidelines, contact your NEC representative or the NEC Technical Assistance Center.

VisuaLink 128/384 General Description