28
Troubleshooting
Fault
Bit cannot be
installed
Use an bit in C4
specifications
Bit size doesn't match the
size of the bit holder
Battery won't
charge
The USB cable isn't
plugged in properly or
specified charging
voltage isn't being used
Check whether the
charging indicator is on,
insert the USB cable, and
use the charging voltage
specified in product
parameters.
Cause
Solution
Maximum electric
torque 0.2N·m
Manually tighten/loosen
it (maximum manual
torque: 3N·m)
Screwdriver
Not work
Low battery power
Please charge the
equipment in time.
Rust on the surface
of bit
High moisture in
storage environment
Storage it in dry
environment, and apply
anticorrosive oil on the
surface of bit
Cannot loosen
the screws or
screw loose
