Getting Started 1Keysight U8903A User’s Guide 33MaintenanceFuse removal/replacementThis section contains the information for replacing the U8903A rear panel AC line fuse.Perform the following procedure to replace the fuse.1 Use a tweezer to remove the fuse holder.2 You will be able to see two fuses. The active fuse is the one on the right whilethe other is the backup.3 Remove the active fuse and replace it with the one of the correct rating andtype for your selected input AC line voltage.NOTE Ensure that you are using the quick-acting, low-breaking capacity 5 A/250 V fuse.WARNING Ensure that you use the correct fuse rating for the selected AC line voltage.Do not use repaired fuses or short-circuited fuse holders to avoid anyunexpected hazards.
