Agilent Technologies 83430A, User Manual

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5-11
Servicing
Troubleshooting
To check the line-power fuse
1 Locate the line-input connector on the instrument’s rear panel.
2 Disconnect the line-power cable if it is connected.
3 Use a small flat-blade screwdriver to pry open the fuse holder door.
C A U T I O N 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.
4 Remove the voltage tumbler, and replace the tumbler so that the desired line
voltage value shows through the small opening in the fuse holder door.
5 The fuse is housed in a small container next to the voltage 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.
6 Verify 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.
W A R N I N G 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.