4.1 Troubleshooting
If abnormal operation occurs, check the following items.
Before Returning for Repair
Symptom Check Items
Unable to perform
measurement.
You will not be able to perform measurement if the
rotary selector is set while pressing the
MEASURE key.
→ Turn off the MEASURE key and then press it
again.
You will not be able to perform measurement if the
voltage between the measurement terminals
before pressing the MEASURE key is higher than
or equal to the following voltage:
50 V to 250 V ranges: Approx. 90 V
500 V, PVΩ 500 V ranges: Approx. 500 V
1000 V, PVΩ 1000 V ranges: Approx. 1000 V
→ Separate the measurement target from all
sources of power before performing
measurement.
Unable to perform
measurement in
500 V, 1000 V, or
PVΩ range.
The 500 V, 1000 V, and PVΩ ranges use double-
action to prevent the inadvertent application of the
measurement signal.
→ Press after setting the rotary selector to
the 500 V or 1000 V range. Pressing while
holding the RELEASE key will not disable the
lock function. In PVΩ range, select a voltage to
be applied with 500 V ←→ 1000 V key and then
press RELEASE key.
The MEASURE
key on the test
lead with a remote
control does not
work.
→ Connect the test lead with a remote control
securely, plugging it all the way in as shown on
p.23. The MEASURE key will not work if any
gap remains.
The measured
value is shown as
the maximum
display value.
There is a broken connection in a test lead.
→ Check the continuity of the test lead with a
tester.
The test leads are not securely connected.
→ Check the connection between the test leads
and the instrument, and check the connection
of the tips of the test leads.
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