TROUBLESHOOTING GUIDE
WARNING
●
To avoid injury from an accidental start, turn the switch OFF and remove the plug from the power source
or remove the battery from the main body before making any adjustments.
●
All electrical or mechanical repairs should be done only by quali
fi
ed service technicians. Contact Hitachi
Authorized Service Center.
Problem
Possible Cause
Possible Solution
Tool doesn’t run
No remaining battery power
Charge the battery.
Battery isn’t securely attached.
Push in the battery until a click is heard.
Tool suddenly stopped
Tool was overburdened
Remove the cause of the overburdening.
See “Reactive force control”.
Reactive force control was activated
Battery or tool overheated
Allow the tool and battery to thoroughly
cool.
Tool bits
-can’t be attached
-fall o
ff
The shape of the attachment portion
doesn’t match
The chucking diameter of the keyless
chuck is 1/16 in (1.5 mm) to 1/2 in (13 mm).
Use a bit that falls within the stated range.
The lock of the keyless chuck is worn
Contact a Hitachi Authorized Service
Center and arrange to have the old keyless
chuck replaced with a new one.
Switch can’t be pulled
Forward/reverse selector button is
positioned halfway
Press the button
fi
rmly into position for the
desired direction of rotation.
Screw head slips or comes
loose.
Bit number doesn’t match with the screw
size
Install a suitable bit.
The bit is worn
Replace with a new bit.
Holes can’t be smoothly
drilled.
The drill is worn
Replace with a new drill.
Rotation speed isn’t appropriate
Adjust the rotation speed (HIGH/LOW) to
match the material to be drilled.
The drill is rotating in reverse
Switch to forward rotation.
Battery will not charged.
Battery not installed into charger properly. Insert battery into charger until charge
status lamp (UC18YFSL (red), UC18YSL3
(blue)) appears.
Charger not plugged in.
Plug charger into a working receptacle.
Battery temperature too hot
Remove battery from charger, cool battery.
For more detail, refer to “Charging
Method”.
Battery temperature too cold
Remove battery from charger, move
battery and charger to a surrounding
air temperature of above 32°F (0°C)
(UC18YFSL), 14°F (-10°C) (UC18YSL3).
For more detail, refer to “Changing
Method”.
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English
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2016/02/01 10:38:51
2016/02/01 10:38:51