Prokit's Industries MT-1280 - Manual (Page 10)

“power” button twice for back to working status.
MAINTENANCE
It’s a precision meter, DO NOT try to verify the circuit
1. Beware of waterproof, dustproof and shockproof.
2. Do not operate and store the meter in the circumstance of
high temperature, high humidity, and flammability,
explosive and strong magnetic field.
3. Use the damp cloth and soft solvent to clean the meter, do
not use abrasive and alcohol.
4. If do not operate it for a long time, should take out the
battery.
4-1. When LCD displays " " symbol, should replace the
battery as below:
4-1-1. Remove the battery compartment screws and pull
out the battery compartment.
4-1-2. Take out the battery and replace a new one. It’s
better to use alkalescency battery for long time
use.
4-1-3. Fix the battery case
If the meter does not work properly, check
the meter as following:
CONDITIONS WAY TO SOLVE
NO DISPLAYING Power is off
Replace battery
SYMBOL DISPLAYS Replace battery
NO CURRENT INPUT Replace fuse
VALUE ERROR Replace battery
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