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6300/6310 Treadmill Electronics Repair Manual – Troubleshooting
ERR 7 Troubleshooting
ERR7 is an incline system VR error. Check the incline VR first. Other possible causes include a bad
data cable, drive board IC, and display IC. LED 5 on the drive board lights when the VR exceeds the
set range.
Incline System
z Wire Connections – Make sure that CON4 and 5 connectors are fastened securely.
z Incline Set – If the incline pipe is stuck or overextended, recalibrate. See CALIBRATION.01.
z VR – Back-probe across the incline VR blue and green wires. Normal range: 1.1 to 4.0.
Recalibrate the incline VR if values exceed this range. See CALIBRATION.01. If the VR
will not calibrate, replace it.
Other
z Drive board – The drive board should supply 5 VDC power to the incline VR. Test by back-probing
on the VR green and red wires. Also, press on drive board IC U20, marked 63DRV-1A, to ensure a good
connection.
z Display board – Press on display board ICs U5 (main program) and U3 (ADC0804) to ensure good
connections.
z Data cable – Inspect for broken or shorted wires. Perform continuity test on the cable.
ERR7.02