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Before requesting our repair service, troubleshoot ac-
cording to the following table:
Problem Cause and solution
Bit falls off or cannot
be installed
•Areyouusingthebitsuitabletoyour
model?
Please check in the usage table.
•Haveyouinstalledthebitproperly?
Check the description in the opera-
tion manual for installing the bit.
•Ifanyof theaboveisnotthe case,
or the problem cannot be solved,
stop operation immediately and con-
tact your distributor for repair.
Weak force, cannot
tighten the screw suf-
ciently
•Areyou usingHIOSgenuine parts
andspeciedsprings?
•Checkthetorquevalueagaininthe
“Output torque guide” for the driver.
•Ifanyoftheabovearenotthecase,
or the problem cannot be solved,
stop operation immediately and con-
tact your distributor for repair.
Driver does not rotate. •Checkthepowersupply.
Refer to the “Pre-operating prepara-
tion” on this paper.
•Iftheaboveisnotthecase,orthe
problem cannot be solved, stop
operation immediately and contact
your distributor for repair.
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Use the HIOS torque meter to check the screw tightening
torque.
•UseHPseriesforelectricdrivertorquesetting.
•UseHDPseriesformeasuringscrewlooseningtorque
and retightening torque.
