Maintenance, Routine maintenance, Periodic inspection – Grass Valley NV5256 v.1.8 User Manual
Page 43: Chapter 5
NV5256 Machine Control Router • User’s Guide
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5. Maintenance
Chapter 5 provides instructions regarding maintenance. It discusses the following topics:
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Routine Maintenance
The NV5256 requires very little in the way of routine or preventative maintenance. Other than
cleaning the fan air intake filter, all that is required is periodic inspection of the system to make sure
no failures have occurred.
You might want to examine the system’s
occasionally to ensure that the sys-
tem is operating normally and to make sure that air flow to the power supply fans is unobstructed.
Periodic Inspection
Periodically inspecting the NV5256 for signs of trouble is the best way to prevent unplanned out-
ages. Begin the inspection at the front of the frame. Open the door to the matrix and make these
observations.
1 Check the +48VDC LEDs on the front of the PS6000 power suppl(ies). An LED that is off or
very dim indicates a failed or failing supply.
2 Place your hand lightly across the air intakes on the front of the power supplies. You should feel
slight air movement that indicates that the internal cooling fans are running. Use a flashlight to
verify that the fan blades are rotating.
3 Examine each I/O card and verify that none of the red alarm LEDs are illuminated. Normally,
the green and yellow LEDs are illuminated. See
on page 38, following.
4 Examine the router control card(s) and verify that the green and yellow LEDs are illuminated
on the active controller, and that the green LED is on for the standby controller (if you have
one). Verify that the ‘low battery’ LED is off. See
on page 38, following.
5 Inspect the air intake filter located in the door. If the filter is dirty or clogged, clean it. Refer to
on page 36, next, for instructions.
Next, move around to the rear of the matrix frame.
Caution
Only qualified service personnel should perform procedures in this section.