Troubleshooting Guide
Diagnostic Lights (After Mid-2016)
Troubleshooting Guide
WMdoc072619
6-10
6
Diagnostic Lights (After Mid-2016)
See Figure 6-4.
LED indicator lights are provided on the encoder sensor housing and the
display circuit board and H-bridge module inside the Simple Set control box. Observing
the LED lights during operation can help identify problems with the sensor, switches or
Simple Set control.
During normal operation:
As the up/down gearbox shaft spins to move the saw head up or down, the sensor
LED will illuminate and brighten. After each complete revolution of the shaft, the
LED will turn off then illuminate and brighten.
In manual mode, the control board LED and the H-bridge D2, D3, D4 LEDs will illu-
minate (red) when the drum switch is activated in the down direction and (green)
when the up/down drum switch is activated in the up direction. The LEDs will turn off
when the drum switch is released. The H-bridge D8 LED will be lit blue to indicate
the 5 Volt DC output to the control board.
In auto mode, the control box LED and the H-bridge D2, D3, D4 LEDs will illuminate
(green) in the up direction as in manual mode. When the drum switch is bumped in
the down direction, the control box LED and the H-bridge D2, D3, D4 LED’s will illu-
minate (red) in the down direction but the control board LED will immediately turn
off. When the blade reaches the increment value set by the Simple Set control, the
D2, D3, D4 LEDs on the H-bridge will turn off. If the drum switch is held down or the
saw head coasts past the increment, the H-bridge D2, D3, D4 LEDs will illuminate
(green) indicating the blade will move up to return to the increment value. When the
FIG. 6-0
3H1040-6
D2
D3
D4
D8
H-bridge LEDs
Display
LEDs
Sensor
LED
