Nautilus Be Strong Commerical T912, Service Manual

Page: 58 / 130

58
Troubleshooting Flowchart: No Elevation Movement
Treadmill will not
elevate.
Unplug P18, and
check for 118VAC
between the blue
and brown wires.
Is the
voltage
good?
Yes
Replace fuse F2
on the
Configuration
Plate Assembly.
No
Short pins 1 and 2
of Q8 on the VSD
Board.
Does the
Actuator Motor
run?
Replace the
Actuator Motor.
Yes
No
Replace the VSD
Board.
Is a
“Grade Move
Error”
present?
Cycle the power.
Yes
No
Does the
treadmill
elevate?
Upgrade the
firmware.
Yes
No
Perform keypad
test: Speed Up, 6,
Up/Down .
Turn off power.
Turn power back
on.
End
Does
GRADE ? and
GRADE ?
work?
End
Replace the
Controller/
Processor PCB.
Replace the
Keypad Assembly.
End
Yes
No
SECTION 4: T914/916 TROUBLESHOOTING ELECTRICAL PROBLEMS