Grass Valley NV5256 v.1.8 - Manual (Page 45)

NV5256 Machine Control Router • User’s Guide 37
5. Maintenance
Fuse Replacement
Figure 5-1. EM0374 Battery Replacement
Fuse Replacement
The I/O cards and the control cards include non-serviceable, self-resetting thermal fuses. These
fuses open in the event of a serious overload, preventing major damage. They will self-reset if
allowed to cool.
A replaceable AC fuse cartridge is used on the PS6100 power supply modules. The correct fuse is
15A (1.25
″ × 0.25″ fast-blow).
The correct fuse for the older PS6000 power supply is given in this table:
If a fuse fails, locate the cause of the trouble rather than simply replacing the fuse blindly. Although
fuses that have been in service for years may fail due to cumulative stress, a fuse normally fails for
a significant reason. Please contact Miranda for assistance if a fault cannot be isolated.
Low-battery Indicators
Coin Cells
Status Lights
Note Reinstall battery with positive terminal (+) facing away from the main circuit
board. (That is to your left if the control card is in installed in the frame.) Insert-
ing the battery backwards may result in an explosion.
90–130VAC 8.0A, 5×20 mm, slow-blow fuse
180–250VAC 6.3A, 5×20 mm, slow-blow fuse