-5-
Problem
Possible cause
(*: Most common cause)
Inspection method
Corrective action
7.
No nailing
operation
without
motor
rotation
sound.
• Dry-fire lockout mechanism is
activated.
• Count the number of
remaining nails. There
should be 6 or more
remaining nails.
• Load nails.
*• Wire-related trouble of
wiring, switch cable (A), and
sensor ass’y (B)
• Check whether the wires
and sensor ass’y (B) are
firmly soldered.
• Check whether the rotor
emits a parching smell.
• Check the conductivity of
the switch and
microswitch by using a
multimeter.
[Checking procedure]
(1) When switch cable (A) is
not defective:
• Set the switch to OFF and
apply tester probes to the
points shown in the figure
below. Make sure the
terminals are not
electrically connected.
• Set the switch to ON and
apply tester probes to the
points shown in the figure
below. Make sure the
terminals are electrically
connected.
(2) When the microswitch is
not defective:
• Set the switch to ON and
apply tester probes to the
points shown in the figure
below. Make sure the
contacts are electrically
connected.
• Set the switch to OFF and
apply tester probes to the
points shown in the figure
below. Make sure the
contacts are not
electrically connected.
• Firmly resolder the
disconnected wires.
• Replace defective parts.
Microswitch
Silicone
Apply multimeter probes here.
NOTE: Remove the silicone a little and apply the
multimeter probes to the exposed terminal metal.
Apply multimeter probes here.
(1)
(2)
