Accuset Troubleshooting
Up/Down Control Lights
3
3-12
AS00doc032519
Accuset Troubleshooting
14.
Place the
red
meter lead to the MTRR terminal and the
black
meter lead to each of the
four connector pins, one pin at a time. The meter should indicate 10k
at pin 1 and infi-
nite resistance at pins 2, 3 & 4.
15.
Place the
red
meter lead to the MTRL terminal and the
black
meter lead to each of the
four connector pins, one pin at a time. The meter should indicate 10k
at pin 2 and infi-
nite resistance at pins 1, 3 & 4.
16.
Place the
black
meter lead to one of the aluminum blocks on the panel and the
red
meter
lead to each of the four connector pins, one pin at a time. The meter should indicate infi-
nite resistance.
The MOSFET panel is defective and needs to be replaced if any of the readings listed
above are not correct.
3.3.2 Replacing the MOSFET Panel
WARNING!
Before performing any service to the sawmill
control box panel, turn the key to the OFF position, discon-
nect the negative battery lead, and remove all rings,
watches, etc.... Failure to do so may cause serious injury
and machine damage.
1.
Turn the key switch to the off (#0) position and remove the key.
2.
Remove the eight screws holding the MOSFET panel at the top of the Accuset control
box.
3.
Disconnect all the wires from the MOSFET panel terminals and remove the panel.
4.
Replace the bad MOSFET panel with the new panel and connect the wires to the proper
terminals.
5.
Secure the new panel with the eight previously removed screws.