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Replacing the Fuse
If the hub's power (PWR) LED was lit initially but is no longer lit, one of the
following conditions may have caused the LED to go out:
The unit may be disconnected from its AC power source.
If connected to an RPS, the unit may be disconnected from its DC power
source.
Verify that the RPS is on and securely attached to the hub.
The AC power source may have failed.
If you are using AC power, verify that the AC power cord is securely
attached.
If the LED is still not lit, the fuse probably needs to be replaced.
The fuse is located in the hub's AC receptacle assembly on the hub's rear
panel and is supplied as standard equipment for the hub. It is a fast-blow
FSF034.1523 fuse or equivalent, rated at 2 A, 250 V.
To replace the fuse, follow these steps:
1 Locate the AC receptacle on the hub's rear panel.
2 Disconnect the AC power cord.
3 Using a small screwdriver, carefully pry open and pull out the fuse-holder, as
shown in Figure 2-7.
s e
0 V f u
it h 2 5
n ly w
U s e o
Figure 2-7 Opening the Fuse-holder in the AC Receptacle Assembly
Replacing the Fuse
2-9
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