Hioki ST5520-01 - Troubleshooting

167
Troubleshooting
10.2 Troubleshooting
When a malfunction of the instrument is suspected, check the information in “Before
sending the instrument for repair” and then, if necessary, contact your authorized
Hioki distributor or reseller.
Before sending the instrument for repair
Symptom Solution Reference
An error is
displayed in the
display screen.
When an error appears in the display, refer to Error display
and solutions (p. 171). -
Even after short
circuit of the probe,
the measured
value does not
appear.
If the measured value is not displayed when the probe is
short circuited, the fuse may have blown or been damaged.
Contact your authorized Hioki distributor or reseller. -
Measurement
Symptom Cause and solution Reference
The measurement
value does not
appear.
An appropriate measurement range may not be automatically
dened.
Extend the test duration.
p. 39
The voltage is not
output.
The probe wires may be broken.
Use the contact check function or check the probe using a
tester.
p. 56
The set voltage is
not output.
Check the resistance of the load.
The measurement current is limited to less than 2.0 mA.
The voltage cannot rise to the set voltage with the load
carrying a current of 2.0 mA or more.
Example) If the set voltage is 500 V and the resistance load
is 100 k
Ω
, the voltage rises only to 200 V.
-
The comparator
judgment result is
wrong.
The resistance range may not be set to the range
appropriate for the lower limit value.
Refer to the resistance measurement specications and
change the range accordingly.
p. 36
The probe wires may be broken.
Use the contact check function or check the probe using a
tester.
-
The measurement terminals may be connected to both the
front and rear terminals. When the measurement terminals
are connected to both the terminals, accurate measurement
cannot be performed.
p. 24
10
9
8
7
6
5
4
3
2
1
Appx. Ind.