On the output test screen in the test mode, when 1P gun or
2P gun display indicates ON, if the gun does not vibrate, first
check the switch unit's circuit protector. If the circuit protector
is satisfactory, check the motor brush.
By referring to the figures below, remove the cover left, cover
right and the grip.
Remove a total of 6 U nuts to withdraw the slide mecha. Pay attention
to the wirings to remove the connector.
Take off the two screws from the lower part of the motor to remove
the brush. If the motor brush is worn away as shown, replace the
motor brush. When replacing the brush, be sure to replace brushes
for both sides simultaneously.