5 Service Guide
54 Keysight U8001A/U8002A User’s and Service Guide
Line Voltage Conversion
Line voltage conversion is accomplished by adjusting two components: the line
voltage selection switch and the power-line fuse on the rear panel.
Shock Hazard. Operating personnel must not remove power supply covers.
Component replacement and internal adjustment must be made only by
qualified service personnel.
1 Remove the power cord and
slide the fuse cover upwards
2 Pull the fuse plunger to remove
the fuse from the fuse holder
3 Remove the voltage selector
PCB using a flat-blade
screwdriver.
4 Replace the correct fuse and
orientate the PCB based on the
correct voltage.