Unplug the power supply.
On the bottom of the card cage assembly, use a flat-tipped
screwdriver to open the fuseholder.
Pull the fuse holder and fuse clear of the back panel.
Take the fuse out of the fuse cap and note the fuse rating.
Make sure the replacement fuse (4A, 250V, The Protectowire
Company, Inc. part
no. 312004) has the same rating.
Put the fuse into the fuse holder.
Put the fuse and fuse cap into the receptacle in the rear of the
case and press it into place.
The Protectowire Company, Inc.
FIBERSYSTEM 8000 - Linear Heat
Series