Error 99: Display Communication Lost – Belt moving
Cause:
The drive did not see valid communication response from the display for >400ms while the belt was
moving.
Service:
• Check the console cable, hub board, and hub board cable for tears or shorts, and verify all connections
are clicked-in and solid.
• Check for terminal corrosion.
• Check drive and display communications with the Cybex test protocol software on a laptop.
• Reprogram the console or replace the display board.
Page 110 of 261
Cybex 770T/790T Treadmill Part Number
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