Troubleshooting Guide - DeWalt DCN890 Original Instructions Manual


WARNING: To reduce the risk of serious personal injury, turn tool off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury.
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

TROUBLESHOOTING GUIDE

CAUSE
Trigger lock in locked position
Dryfire lock out engaged, blocking contact trip from
traveling fully
Tool is stalled, locking the motor from rotating
Tool is hot. (Check LED indicator to verify these
conditions.)
Battery 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
Speed select setting in wrong position.
Tool not firmly applied to workpiece
Material and fastener length
Use of incorrect speed
Damaged or worn driver tip
Damaged actuation mechanism
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 tool cool down before continuing use.
Let the battery cool or replace it with a cool pack.
See authorised service centre.
Normal operation, release contact trip and redepress.
See authorised service centre.
See authorised service centre.
See authorised service centre.
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 authorised service centre.
See authorised service centre.
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 speed 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 speed 1 - adjust speed setting to position 2.
Replace driver with kit.
See authorised service centre.
English
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