Error 13: Upper Display watchdog triggered
Cause:
A software task has failed, causing a delay in the routine running of the code on the upper display. If
the delay is long enough, a hardware timer in the processor will re-boot the processor. When the
processor comes up, it will communicate what caused the reset (watchdog vs. normal power reset.)
Watchdog resets are logged as Error 13. Power resets are not logged.
Service:
The only theory on what could cause a watchdog to kick on the display is an ESD event, software or
hardware failure.
• Check the CHR grips for conductivity and ensure they aren’t shorted to the frame or pinched, and
that they don’t lie against or near the back of the GFX board.
• Verify the membranes and decals are not fatigued, cracked or show signs of moisture intrusion.
• Ensure the GFX ground lead is secured correctly, and all screws holding the MCC are tight.
• Check the MCC grounding cable for a tight fit.
If the error occurs often, replace the GFX assembly.
Page 94 of 261
Cybex 770T/790T Treadmill Part Number
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