15
V.Fault Inspection and Treatment
Phenomena
Causes
Treatment
1
The green light does not turn on
when the power switch is switched
on.
1. Power line is open
circuit.
2. The fuse of the power
supply is fused.
Replace the power
cord.
Replace the fuse.
2
Optical fiber micro-ampere meter
is selected, and the current can not
be read.
1 Optical fibers are not
connected properly
2 Micro Amperometer
battery undervoltage
Connecting optical
fibers;
Replacement of Micro
Amperometer Battery
3
LCD display "high voltage
overvoltage protection"
The test voltage is set too
low
Return to the Settings
menu to increase the
setting voltage setting
4
LCD display "high voltage
overcurrent protection"
1.Discharge or breakdown
of test sample;
2. the limiting current
setting is too small to check
the subject.
Increase the limiting
current setting
5
LCD display "low voltage
overvoltage protection"
The current load is 1.1
times more than the rated
load of the equipment
The device was
unable to test the
sample
6
LCD display "low voltage
overcurrent protection"
1. The current load is 1.1
times more than the rated
load of the equipment
2.Or equipment damage
1.The device cannot
do the test on the
sample
2. need to repair
