5-11
Servicing
Troubleshooting
To check the line-power fuse
1Locate the line-input connector on the instrument’s rear panel.
2Disconnect the line-power cable if it is connected.
3Use a small flat-blade screwdriver to pry open the fuse holder door.
CAUTION You must remove the voltage tumbler to change the voltage selector. Rotating
the voltage tumbler while it is in the line module damages the line module.
4Remove the voltage tumbler, and replace the tumbler so that the desired line
voltage value shows through the small opening in the fuse holder door.
5The fuse is housed in a small container next to the volta ge tumbler. Insert the
tip of a screwdriver on the side of the container and gently pull outward to
remove the container.
A spare fuse is stored below the line fuse.
6Verify that the value of the line-voltage fuse is correct.
•For 100/120V operation, use an IEC 127 5×20 mm, 0.315 A, 250 V, Agilent
part number 2110-0449.
•For 220/240V operation, use an IEC 127 5×20 mm, 0.16 A, 250 V, Agilent part
number 2110-0448.
WARNING For continued protection against fire hazard , replace line fuse only
with same type and ratings, (type T 0.315A/250V for 100/120V
operation and 0.16A/250V for 220/240V operation). The use of other
fuses or materials is prohibited.