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2. Shut off all equipment plugged into the back of the UPS. Next, you must
shut down the UPS by pressing the key on the front panel. Unplug the
power cord from the back of the UPS.
3. To open the fuse holder, push on the tab until the fuse
holder pops out.
4. Pull the fuse holder out until you can see the fuse
shown.
5. If you have not used the spare fuse yet, there will be
two fuses in the fuse holder. The used fuse is on the
side with the metal contacts. Remove this fuse from
the fuse holder and put the spare fuse (or a new fuse)
in its place.
6. Push the fuse holder back in until it latches.
7. To test the UPS, plug it into the wall outlet. Press the key on the front panel
to restart the UPS. Then, switch on the equipment plugged into your UPS.
Battery backup time may be low until the UPS recharges its batteries. If the
UPS does not restart, follow the proper Customer Process for Service in
, IBM Service Support.
LI 1420U-B73 and LI 1420E-B74
To order a new fuse [Best Power number FUS-0185 (LI1420U-B73), FUS-0360
(LI1420E-B74)], follow the proper Customer Process for Service in
IBM Service Support; otherwise, check the label on the back of the UPS for the
fuse’s size and type. Make sure the new fuse is the size and type shown on the
UPS label.
1. Shut off all equipment plugged into the back of the UPS. Next, shut down
the UPS by pressing the key on the front panel. Unplug the power cord
from the back of the UPS.
2. The drawing to the right shows where you
will find the fuse. Notice that the fuse cap
has a slot that lets you turn it with a standard
screwdriver. Using the standard screwdriver,
push the fuse cap in and turn it to the left
(counterclockwise). The fuse cap should pop
out.
3. Pull the fuse cap out of the UPS.
4. Carefully pull the fuse out of the fuse cap
and put the new fuse in its place.
