Service manual
Troubleshooting Procedures
3.  Press the enter key once. After a slight delay, a 
beep sounds and “CAL” appears in the upper right 
window.
4.  Press the start key. The system enters the auto 
calibration mode.
5.  Press the start/stop key to pause auto calibration.
6.  Press the enter key to manually toggle through 
the calibration points while and save your current 
values. Press the scan keys to toggle through 
without saving. The order is: MIN PWM, ½ PWM, 
MAX PWM, ELEVATION UPPER LIMIT, ELEVATION 
LOWER LIMIT.
On the belt calibration screens, the actual speed shows 
in the upper left window, the current PWM shows 
in the upper right window and the target calibration 
speed shows in the lower right window.
On the elevation calibration screens, the input volts 
shows in the upper left, the a/d ticks shows in the 
upper right and the mode shows in the lower right.
HARDWARE TEST
1.  Enter engineering mode.
2.  Press start once. Max speed and units shows (“E”= 
ENGLISH, “n”= METRIC).
3.  Press the enter key once. After a slight delay, a 
beep sounds and “CAL” appears in the upper right 
window.
4.  Use the up/down keys to scroll until “tESt” shows in 
the upper right window.
5.  Press the start key. 
The elevation keys directly control the elevation, the 
speed keys directly control the belt PWM, and the scan 
keys manually ramp up and down the fan PWM. The 
fan keys are also enabled.
DISPLAYS
• UpperLeft=ActualHR
• UpperRight=ActualSpeed
• LowerLeft=ElevationA/Dcounts
• LowerRight=BeltPWM
Service Manual
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