115
Troubleshooting
8.2 Troubleshooting
If damage is suspected, read the “Before returning for repair” (p. 115) section to
remedy problems. If this does not help you, contact your authorized Hioki distributor
or reseller.
Before returning for repair
Check the following items if you notice a problem in the operation of the instrument.
Problem Possible cause Action
Reference
Power is not turned on. • Batteries are not installed.
• Battery level is low.
Replace with new batteries. p. 27
The batteries are installed
incorrectly.
Check the polarity. p. 27
Resistance
measurement value is
incorrect.
Test lead is broken. Replace the test lead. –
Test lead is not fully inserted. Insert the test lead fully. –
Wrong connection terminals. Check the terminals. p. 35
Test lead insulation has
deteriorated.
Replace with a test lead
that has good insulation.
–
Monitored voltage
during resistance
measurement is low.
Resistance is low. The output voltage is
lowered for measurement
of low resistance values.
p. 122
Power fails upon
measuring insulation
resistance.
Battery level is low. Replace with new
batteries.*
1
p. 27
The test leads connected to
the GUARD terminal and the
+ terminal are short-circuited.
Check the connection to
the test lead clips.
p. 44
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