24 34410A/11A/L4411A User’s Guide
1 Quick Start
If the Multimeter Does Not Turn On
Use the following steps to help solve problems you might encounter when turning on the
multimeter. If you need more help, see the Service Guide for instructions on returning
the multimeter to Keysight for service.
1 Verify that there is ac power to the multimeter.
First, verify that the multimeter’s Power switch is in the “On” position. Also, make sure
that the power cord is firmly plugged into the power module on the rear panel. You
should also make sure that the power source you plugged the multimeter into is
energized.
2 Verify the power–line voltage setting.
The line voltage is set to the proper value for your country when the multimeter is
shipped from the factory. Change the voltage setting if it is not correct. The settings are:
100, 120, 220, or 240 Vac (for 230 Vac operation, use the 220 Vac setting).
See “To Replace the Power-Line Fuse (34410A/11A)” on page 25 if you need to change
the line–voltage setting.
3 Verify that the power–line fuse is good.
The multimeter is shipped from the factory with a power–line fuse installed. The
supplied fuse is a 250 mA, 250V, slow–blow, 5x20mm fuse, Keysight part number
2110–0817. If you determine that the fuse is faulty, replace it with one of the same size
and rating.
See “To Replace the Power-Line Fuse (34410A/11A)” on page 25 if you need to replace
the power–line fuse.
The current input path is also fused. The supplied fuse is a 3 A, 250V, fast-acting,
5x20mm fuse, Keysight part number 2110–0780, and is housed
in a standard screw–in fuse holder on the left side of the rear panel. If you determine that
the fuse is faulty, replace it with one of the same size and rating.
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