Setting Line Voltage And Replacing Fuse; Table 2-1 Fuse Ratings - Keithley 2016 User Manual

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Setting line voltage and replacing fuse

A rear panel fuse located next to the AC receptacle protects the power line input of the
instrument. If the line voltage setting needs to be changed or the line fuse needs to be replaced,
perform the following steps.
WARNING
1.
Place the tip of a flat-blade screwdriver into the power module by the fuse holder
assembly (see
assembly and its internal spring will push it out of the power module.
2.
Remove the fuse and replace it with the type listed in
CAUTION
3.
If configuring the instrument for a different line voltage, remove the line voltage selector
from the assembly and rotate it to the proper position. When the selector is installed into
the fuse holder assembly, the correct line voltage appears inverted in the window.
4.
Install the fuse holder assembly into the power module by pushing it in until it locks in
place.
Table 2-1
Fuse ratings
Line voltage
100/120V
220/240V
Make sure the instrument is disconnected from the AC line and other
equipment before changing the line voltage setting or replacing the line
fuse.
Figure
2-3). Gently push in and to the left. Release pressure on the
For continued protection against fire or instrument damage, only replace
fuse with the type and rating listed. If the instrument repeatedly blows
fuses, locate and correct the cause of the trouble before replacing the fuse.
See the Model 2016 Service Manual for troubleshooting information.
Fuse rating
0.5A, 250V, slo-blo, 5 × 20 mm
0.25A, 250V, slo-blo, 5 × 20 mm
Basic Measurements
Table
2-1.
Keithley P/N
FU-71
FU-96-4
2-9

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