General Maintenance; Setting Line Voltage And Replacing Fuse; Voltage Selector - Picotest M3500A Service Manual

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General Maintenance

2.1 Setting Line Voltage and Replacing Fuse

Before turning on the multimeter, you should check the Line voltage setting
and the power-line fuse. If the line voltage setting is not properly, correct it.
If the power–line fuse is not good, replace a new one in the same type. The
following sections will show you how to do.
Warning! Before changing the line voltage setting or replacing the
power line fuse, make sure the multimeter is disconnected from the AC
power and remove all the test leads connected to it. An incorrect voltage
setting may cause severe damage to your instrument.

2.1.1 Voltage Selector

Normally, the line voltage is selected for your country properly when the
multimeter is shipped from the factory. Refer to your local power utility
voltage to see if the setting is correct. Follow the steps below to select a
properly line voltage for your instrument if the setting is not fit your
requirement.
NOTE: In some areas, the power utility voltage is 240V or 120V; in others,
it is 220 V or 100 V. The equipments are set properly according to users'
requirements when they are shipped from the factory. For more information,
please refer to section 2.1.2.
[Step 1]
Verify current line voltage setting from the window. If it is incorrect, you
must change it to a properly value. The position of the window is shown in
Figure 2-1.
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