Troubleshooting Guide - DeWalt DCN891 Instruction Manual

English
Many common problems can be solved easily by utilizing the chart below. For more serious or persistent problems,

WARNING: To reduce the risk of serious personal injury, ALWAYS disconnect battery pack from tool before
all repairs.
SYMPTOM
Motor does not run with contact
trip depressed
Tool does not actuate (motor runs
but will not fire)
Motor starts up but generates a
lot of noise
Driver blade continues to get stuck
in down position
Tool operates but does not drive
fasteners fully
16

TROUBLESHOOTING GUIDE

contact a D WALT service center or call 1-(800)-4-D
e
CAUSE
Trigger lock in locked position.
Dryfire lock out engaged, blocking contact trip from
traveling fully.
Tool is stalled, locking the motor from rotating.
Battery is hot. (Check LED indicator to verify
these conditions.)
Tool is hot. (Check LED indicator to verify
these conditions.)
Bent contact trip.
Motor stops running after 5 seconds.
Terminals are dirty or damaged.
Damaged internal electronics.
Damaged Trigger.
Dryfire lock out engaged, blocking contact trip from
traveling fully.
Low battery charge or damaged battery.
Jammed nail/drive blade not returned to
home position.
Damaged driver.
Jammed internal mechanism.
Damaged internal electronics.
Jammed pin and driver is stuck in down position.
Damaged driver.
Jammed pin and driver is stuck in down position.
Debris in nosepiece.
Damaged or worn driver.
Power setting in wrong position.
Tool not firmly applied to workpiece.
Material and fastener length.
Use of incorrect power setting.
Damaged or worn driver tip.
Damaged actuation mechanism.
WALT.
e
FIX
Unlock trigger lock.
Load more pins into magazine.
Rotate the stall release lever on the tool and the mechanism
will release. If driver does not return, remove battery and
manually push driver back to home position.
Let the battery cool or replace it with a cool pack.
Let the tool cool down before continuing use.
See authorized service center.
Normal operation, release contact trip and redepress.
See authorized service center.
See authorized service center.
See authorized service center.
Load pins into magazine.
Check charge level if pack shows state-of-charge. Charge or
replace battery pack if necessary.
Remove battery, clear jammed nail, cycle stall release lever,
(push driver up manually if necessary) reinsert battery pack.
Replace driver with kit.
See authorized service center.
See authorized service center.
Use stall release lever, clear and jammed pins, and return
driver manually if necessary.
Replace driver with kit.
Use stall release lever, clear any jammed pins, and return
driver manually if necessary.
Clean nose area and watch closely for small pieces of broken
pins stuck in the track. Refer to Clearing a Jammed Pin.
Replace driver with kit.
Set power to appropriate setting.
Apply adequate force to tool securing it tightly to workpiece.
See instruction manual.
If the unit continues to stall (forcing the need to rotate the
stall release lever) choose the appropriate material and
fastener length that is not too rigorous of an application.
If trying to drive longer pins in soft woods, or driving pins
into harder materials using power setting 1 - adjust power
setting to 2.
Replace driver with kit.
See authorized service center.