7 Disassembly and Repair  
Cleaning
220 U3606A User’s and Service Guide
To replace the current input fuse
The current input terminal is fuse protected. The fuse for the current 
input terminal is located on the front panel. The fuse is a 3.15 A/500 V 
F/B 6.3×32 mm fuse, Agilent part number A02- 62- 25657- 1U. If you are 
certain that the fuse is faulty, replace it with one of the same size and 
rating.
1 Disconnect all input terminal connections. Place a flat blade screwdriver 
on the fuse holder assembly as shown below and push in.
2 Turn the screwdriver anti- clockwise to remove the fuse holder assembly 
from the front panel.