Keysight Technologies 3458A Guide D'utilisation page 40

1 Installation and Maintenance
Maintenance
This section describes how to replace the multimeter's fuses and how to obtain
repair service.
Replacing the line power fuse
The line power fuse holder is located on the right side of the multimeter's rear
panel. Before replacing the fuse, disconnect the multimeter's line power. To
replace the fuse, use a small flatblade screwdriver to push in on the fuse cap and
rotate it counterclockwise. Remove the fuse cap and replace the fuse with the
appropriate type (see
power fuse cap is 2110-0565.) Re-install the fuse cap and apply power.
Table 1-4
Line vol tage
100 or 120 VAC (Nominal)
220 or 240 VAC (Nominal)
Replacing a current fuse
Each of the front and rear current terminals (labeled I) contains a current fuse. To
access the fuse, unscrew (rotate counterclockwise) the current terminal binding
post knob until it stops. Push in on the terminal and rotate it clockwise. The entire
terminal/fuse assembly can now be removed as shown in
replace the fuse with a 1 A 250 V NTD fuse (Keysight part number 2110-0001).
(CAUTION: never use a slow-blow fuse as a current fuse; multimeter damage will
result.) Replace the terminal/fuse assembly by pushing it in and turning
counterclockwise until the assembly locks in place.
40
Table 1-4). (The Keysight part number for the gray line
Replacement power line fuses and caps
Power line fuse
1.5 A NTD, Keysight Part Number 2110-0043
500 mAT SB, Keysight Part Number 2110-0202
Figure 1-5. If necessary,
Keysight 3458A User's Guide