Service Guide 14-5
8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures
8719ES/20ES/22ES Replacing the Line Fuse
RF Network Analyzers
Replacing the Line Fuse
Tools Required
• small slot screwdriver
Removal
WARNING For continued protection against fire hazard, replace line fuse only
with same type and rating (115 V operation: T 5A 125V UL/CSA; 230V
operation: T 4A H 250V IEC). The use of other fuses or materials is
prohibited.
1. Disconnect the power cord.
2. Use a small slot screwdriver to pry open the fuse holder.
3. Replace the failed fuse with one of the correct rating for the line voltage. See
“Hardware, Preregulator” on page 13-83 to find the part number.
Replacement
1. Replace the fuse holder.
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