Hioki DT4254 - Page 105

97
Troubleshooting
Symptom Check and/or remedy
The measurement
value does not
appear.
Even after the
measurement, 0
(zero) still appears.
Even after short
circuit of the probe,
the measured value
does not appear.
Zero adjustment is
not possible.
If the measured current value does not appear,
check that the fuse is not blown.
Check method: “Check that the fuse is not broken.”
(p. 40)
If the fuse is blown, replace it with the specied
fuse. (p. 100)
If the measured current value does not appear,
check that the fuse holder is not deformed.
When removing the fuse, the holder is deformed
if excessive force is applied. Pinch it with needle-
nose pliers and restore the shape of the fuse
holder.
Check that the test lead is not broken.
Perform the continuity check to conrm the
continuity of the test leads. (p. 38)
If the test lead is broken, replace the lead.
• Check that the test leads have been inserted at
the ends.
• Check that the measurement method is correct.
If no problems have been found, the instrument
may be malfunctioning. Send the instrument for
repair.
The display does not
stabilize and the value
uctuates;itisdifcult
to read the value.
Check that the input signal is within the input range
for the instrument.
If there is any inuence from noise, use the lter
function of the instrument. (p. 64)
“-----” appears in the
display.
“----” appears when the rotary switch position is
not conrmed. Set the rotary switch to the proper
position.
Turning on the power
brings up the error
display.
When nothing is
connected, the error
display appears.
Reset the instrument. If the same symptom still
occurs even after resetting the instrument, send
the instrument for repair.