Figure 8-1: Fuse Location - Keithley 3720 User Manual

Section 8: Maintenance

Figure 8-1: Fuse location

Fuse Location
(1) Analog
backplane fuse
(2) Instrument
fuse
To replace a fuse:
1. Using a flathead screwdriver, disengage the fuse holder by rotating it counter-clockwise.
2. Pull out the fuse holder and replace the fuse with the correct type (see table).
3. Reinstall the fuse holder.
If the fuse continues to blow, a circuit malfunction exists and must be corrected. Return the unit
to Keithley Instruments for repair.
8-2
Rating
250V, 3A fast blow 5x20mm
250V / 1.25A slow blow
5x20mm
Series 3700 System Switch/Multimeter User's Manual
Keithley Instruments part
number
FU-99-1
FU-106-1.25
Document Number: 3700S-900-01 Rev. A / August 2007