Problem Cause / Remedy
Cannot turn on the power
The power turn off
immediately
・ Charge the battery when powered by batteries.
・ Try another USB cable when powered by bus power.
・ Remove the battery and put it again after a few
seconds.
Battery cannot be recharged
Battery cannot be recharged
fully
・ Check the charge setting.
・ With the line monitor the batteries cannot be fully
charged. Use the dedicated charger sold in the market.
「→ 2.6 Settings for Charging Batteries」
・ When it does not run enough although you have
charged the batteries well,the batteries’ lifetime
incoming to its end.
The display does not light
well.
It becomes dark soon.
・ Control the back light setting.
・ The automatic backlight-o function is working.
「→ 2.7 Adjust LCD Back Light」
「→ 2.8 Power saving setting」
The measured data
disappeared.
・ By [Run] the previous measured data disappears.
・ The measured data disappears when turning off the
power.
「→3.8 Auto Backup」
The communication setting
has changed unintentionally.
The date clock often gets
strange.
・ When you remove the batteries from the line monitor
for a while or when the batteries run out the settings
in the memory IC and clock IC are initialized. Please
put charged batteries in the line monitor.
Date or time is not displayed
correctly.
・ Set the current date and time correctly.
Cannot operate any keys
・ You cannot control it while it accesses the USB
memory.
・ You cannot control it while it connects with a PC by
the PC link software.
・ Try removing the batteries and all the cables.
Cannot work well
A part of display is not correct
・ Turn o the power and then turn on the power again.
・ Try the soft reset operation.
「→ 11.1 How to make it back to default state」
Line state LED does not light
・ Configure the measurement port as same as the
condition of the target device.
「→ 3.2 Measurement Port / Function」
・ Check if there is any breaking of the wires, wiring
error, or loosening of the connectors.
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11.3 Troubleshooting
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