6-2 FlexNet
®
700 Series Line Extender Rev F
6
➤ To remove t h e f u se
1. Remove the fuse/slug using a fuse puller. In 117V
AC powered units, remove the fuse cap by
turning the cap counter-clockwise about 1/4 turn using your fingers or a screw driver as
needed. The fuse will pop up for easy removal. Refer to Figures 2.2 to 2.5 for fuse locations.
2. Inspect for the following:
■ fatigue cracks or corrosion in both leaves of the fuseclips
■ broken connections between the fuseclips and the circuit board
■ heat damage on the circuit board
3. If power supply damage is evident, replace the damaged power supply (see H. E. Power
Supply Replacement on page 6-3).
➤ To install the fuse (non-117VAC)
1. Using a fuse puller, center the fuse or slug across the fuseclip. Be sure that the metal tips of the
fuse/slug do not extend beyond the fuse guides of the holder on either side.
2. Apply even, steady pressure to the tool until both ends of the fuse or slug snap into the holder
simultaneously.
➤ To install the fuse (117VAC)
1. Replace the fuse into its holder.
2. Replace the fuse cap by positioning it over the fuse, pressing the fuse down into the holder,
and turn the cap clockwise about ¼ turn to lock in place. Use fingers or screwdriver as
needed.
RF Module Replacement
➤ To replace the RF module
1. If an H. E. Power Supply is present, disconnect the Power Plug from the RF module POWER
PLUG connector. Release the plug by squeezing the tabs on the Power Plug.
2. Use a flat-blade screwdriver to loosen and release the captive Module Hold Down screws.
WARNING: Hazardous voltages are present. Use approved safety equipment and
procedures.
CAUTION: Arcing between the RF module and the housing will damage the unit.
Disconnect power to the unit or remove the MAIN FUSE before removing the RF
module.
Note: Verify that the bottom of the the RF module is clean an free of debris to ensure
proper heatsinking.
Tip: If aluminum oxide (white powder) is present on the centerseizure assemblies,
remove it before proceeding.
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