DeWalt DCN920 - Troubleshooting Guide

ENGLISH
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TROUBLESHOOTING GUIDE
MANY COMMON PROBLEMS CAN BE SOLVED EASILY BY UTILIZING THE CHARTBELOW.
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DANGER: To reduce the risk of serious personal injury, turn unit off, remove safety key, and remove battery pack before
making any adjustments or removing/installing attachments or accessories. An accidental start‑up can causeinjury.
For assistance with your product call DeWALT at 1-800-4-DeWALT (1-800-433-9258).
SYMPTOM CAUSE FIX
Motor does not
run with trigger
depressed
Trigger lock‑off in lockedposition. Unlock triggerlock.
Tool is stalled, locking the motor fromrotating. Rotate the stall release lever on the tool and the
mechanism will release. If driver blade does not return,
remove battery and manually push driver blade back to
homeposition.
Tool internal electronics need to bereset. Remove battery, wait 3seconds andreinsert.
Motor stops running after 5seconds. Normal operation, release trigger andredepress.
Terminals are dirty ordamaged. Contact a DeWALT authorized servicecenter.
Damaged internalelectronics. Contact a DeWALT authorized servicecenter.
Damagedtrigger. Contact a DeWALT authorized servicecenter.
Battery ishot. Let the battery cool or replace it with a coolpack.
Tool ishot. Let the tool cool down before continuinguse.
Motor does not
run with contact
trip depressed
Trigger lock in lockedposition. Unlock triggerlock.
Dry fire lock out engaged, blocking contact
trip from travelingfully.
Load more nails intomagazine.
Tool is stalled, locking the motor fromrotating. Rotate the stall release lever on the tool and the mechanism
will release. If driver blade does not return, remove battery
and manually push driver blade back to homeposition.
Bent contacttrip. Contact a DeWALT authorized servicecenter.
Motor stops running after 5seconds. Normal operation, release contact trip andredepress.
Terminals are dirty ordamaged. Contact a DeWALT authorized servicecenter.
Damaged internalelectronics. Contact a DeWALT authorized servicecenter.
Damagedtrigger. Contact a DeWALT authorized servicecenter.
Battery ishot. Let the battery cool or replace it with a coolpack.
Tool ishot. Let the tool cool down before continuinguse.
Tool does not
actuate (motor
runs but will not
fire)
Dry fire lock out engaged, blocking contact
trip from travelingfully.
Load nails intomagazine.
Low battery charge or damagedbattery. Check charge level if pack shows state‑of‑charge. Charge
or replace battery pack ifnecessary.
Jammed nail/drive blade not returned to
homeposition.
Remove battery, clear jammed nail, cycle stall release lever, (push
driver blade up manually if necessary) reinsert batterypack.
Damaged driver/returnassembly. Replace driver/return assembly. Contact a DeWALT
authorized servicecenter.
Jammed internalmechanism. Contact a DeWALT authorized servicecenter.
Damaged internalelectronics. Contact a DeWALT authorized servicecenter.
Motor starts up
but generates a
lot of noise
Jammed nail and driver blade is stuck in
downposition.
Use stall release lever, clear any jammed nails, and return
driver blade manually ifnecessary.
Damaged driver/returnassembly. Replace driver/return assembly. Contact a DeWALT
authorized servicecenter.