CYBEX 525T Service Manual page 83

Error 18: Membrane Fault – Stuck Thumb Control
Cause:
Membrane is showing a thumb control key constantly activated for >45 seconds, regardless of mode.
Service:
If this was a momentary glitch or user error, cycling power will remedy the situation. If a key is permanently
stuck, the error will reoccur and the membrane will have to be replaced.
• Check the membrane and thumb controls for signs of fatigue, cracking, or possible moisture intrusion.
• Ensure the membrane connector is fully seated.
• Inspect the membrane cable for cuts, pinches, and all leads are fully inserted in their connectors.
• Replace the membrane and/or the thumb control switches.
Key list
Left and Right controls
Key Description
1 Incline Down or Resistance Down
2 Incline Up or Resistance Up
3 Speed Down or Resistance Down
4 Speed Up or Resistance Up
Thumb controls membrane
Cybex 525T Treadmill Part Number
Page 83 of 199