Keithley 2000, User Manual, Page: 41 / 280

AMPS fuse replacement
WARNING Make sure the instrument is disconnected from the power line and other
equipment before replacing the AMPS fuse.
1. Turn off the power and disconnect the power line and test leads.
2. From the front panel, gently push in the AMPS jack with your thumb and rotate the fuse
carrier one-quarter turn counter-clockwise. Release pressure on the jack and its internal
spring will push the jack out of the socket.
3. Remove the fuse and replace it with the same type (3A, 250V, fast blow, 5
×
20mm). The
Keithley part number is FU-99-1.
CAUTION Do not use a fuse with a higher current rating than specified or instrument
damage may occur. If the instrument repeatedly blows fuses, locate and cor-
rect the cause of the trouble before replacing the fuse. See the optional
Model 2000 Repair Manual for troubleshooting information.
4. Install the new fuse by reversing the procedure above.
See Section 3 — Measurement Options for information that explains the configuration op-
tions for DC and AC current measurements.
Basic Measurements 2-23