Routine Maintenance
1-2
1.3
Current fuse replacement
Each AMPS input (front and rear) has its own current fuse.
When replacing a current fuse, use the type specified in Table
1-2.
WARNING
Disconnect the instrument from the
power line and remove all test leads
(front and rear) before replacing the
AMPS fuses.
1.3.1 Front AMPS input fuse
The front panel AMPS jack functions as the AMPS input ter-
minal and as the carrier for the AMPS fuse (see Figure 1-2).
Perform the following steps to replace the fuse:
1. Push in the AMPS input jack and turn counter-clockwise
until the spring-loaded fuse carrier releases from the
fuse holder.
2. Pull out the fuse carrier and replace the fuse with the
type specified in Table 1-2.
CAUTION
To prevent instrument damage, use only
the type specified in Table 1-2.
3. Re-install the fuse carrier.
Table 1-2
Power line fuse
Size
Rating
Keithley Part No.
5
×
20mm
250V, 2A, Slo-Blo
FU-48
Figure 1-1
Line fuse location
OR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
OR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
DIGITAL I/O
TRIGGER
LINK
IN
OUT
LINE RATING
90-134VAC
180-250VAC
50, 60, 400HZ
55VA MAX
LINE FUSE
SLOWBLOW
1/2A, 250V
IEEE-488
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
Line
Fuse
Figure 1-2
Front AMPS input fuse location
2001 MULTIMETER
RANGE
RANGE
MATH
4W
AUTO
ARM TRIG SMPL
!
F
R
500V
PEAK
FRONT/REAR
2A 250V
AMPS
CAL
HI
INPUT
LO
SENSE
Ω
4 WIRE
INPUTS
350V
PEAK
1100V
PEAK
AUTO
AMPS
Fuse
