Grass Valley NV8256-Plus v.1.2 - Manual (Page 69)

NV8256-Plus Digital Video Router • User’s Guide 59
6. Maintenance
Chapter 6 provides maintenance instructions. It discusses the following topics:
• General Maintenance
• Fuse Replacement
• Indicator LEDs
• Air Flow
• Battery Replacement
• Troubleshooting
• Obtaining Service
General Maintenance
The NV8256-Plus does not require any periodic electrical or physical 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.
It is recommended that the system’s indicator LEDs be checked on a regular basis to ensure that the
system is operating properly. (See
Indicator LEDs on page 60.) It is also a good idea to regularly
make sure cooling air flow to the power supply fans is unobstructed.
Fuse Replacement
Fuses are located on each of the frame modules. If a problem occurs on a module, it is a good to
check the fuses. The following table lists the fuses on each module:
Caution Only qualified service personnel should perform procedures in this section.
Location Fuse Value
Power supply AC line fuse 8 Amp, 5 × 20 mm, slow-blow
Control card DC fuse 1 Amp, auto reset (not user serviceable)
Crosspoint card 1 Amp, auto reset (not user serviceable)
Warning Dangerous voltages are present at the rear AC power connector and on the power
supply module. Take precautions to prevent electric shock: Do not touch exposed
wires or connecting pins.