CYBEX Arc Trainer 750A - Return Material Authorization (RMA)

Service
Page 4-29
Cybex 750A/750AT Arc Trainer Service Manual
ERROR 39 - UART RX BUFFER OVER-RUN
Note ERROR 39 present
in log. Restart unit.
Does the error
reoccur after restart?
Check data cable
continuity and
connections.
Yes
Does the data cable
check out properly?
Yes
Replace display board.
Does the error
reoccur after restart?
Replace lower controller
board.
Yes
Replace data cable.
No
Completed.
No
No