ZyXEL Communications ZyWall 100 User Manual page 344

ZyWALL 100 Internet Security Gateway
The ZYWALL 100 uses a 0.5 Amps, 250 VAC fuse. The ZYWALL-100 comes from the factory; with two
fuses installed in the fuse housing. If you need to install a new fuse, follow the procedure below.
Removing and Installing a Fuse
Removing a Fuse
Disconnect all power from the ZYWALL 100 before you begin this procedure.
Step 1. Place the rear panel of the ZYWALL 100 in front of you.
Step 2. Remove the power cord from the back of the unit.
Step 3.
The fuse housing is located between the power switch and the power port. Use a small flat-head
screwdriver to carefully pry out the fuse housing.
Step 4.
A burnt-out fuse is blackened, darkened or cloudy inside its glass casing. A working fuse has a
completely clear glass casing. Pull gently, but firmly, to remove the burnt out fuse from the fuse
housing. Dispose of the burnt-out fuse.
Installing a Fuse
Step 1. The ZyWALL 100 is shipped from the factory with one spare fuse included in a box-like section
of the fuse housing. Push the middle part of the box-like section to access the spare fuse. Put
another spare fuse in its place in order to always have one on hand.
Step 2. Push the replacement fuse into the fuse housing until you hear a click.
Step 3.
Firmly, but gently, push the fuse housing back into the ZYWALL 100 until you hear a click.
Step 4.
Plug the power cord back into the unit.
BB
Removing and Installing a Fuse
This appendix shows you how to remove and install fuses for the ZYWALL 100.
Appendix K
Removing and Installing a Fuse