![background image](http://html1.mh-extra.com/html/makita/dft087f/dft087f_repair-manual_4282914029.webp)
29 / 35
Symptom
Probable Cause
Corrective Action
Remove the dust.
Replace Battery.
Remove the dust.
Check the wire(s) with an ammeter,
and if there is no electric continuity
in them, replace the wire(s).
Replace Circuit board.
Dust on the contacts of the battery or
the charger.
Circuit board of the charger is broken.
Lead wire(s) in the charger are broken.
Dust on the contacts of the battery or
the charger.
Connector(s) inside the charger are not
connected.
Battery is inactive, broken or its service
life has expired.
Charging lamp on the charger
lights up in red, then
immediately start blinking in
green.
Connect it securely.
Replace Circuit board.
Circuit board of the charger is broken.
Charging lamp on the charger
blinks in red and green
alternately.
Connect them securely.
Connector(s) in the charger are
disconnected.
Charging lamp on the charger
blinks in yellow.
Replace Scirocco fan.
Remove dust from air inlet and
outlet on the charger and Battery.
Scirocco fan in the charger is broken.
Passage for air-cooling is clogged with
dust. (Air-cooled type batteries only)
Check the wire(s) with an ammeter,
and if there is no electric continuity
in them, replace the wire(s).
Lead wire(s) in the charger are broken.
Replace Battery.
Battery is inactive, broken or its
service life has expired.