Elevation System Failure; "Po" Error - Landice L Series Diagnostic And Service Manual

Place the treadmill in Diagnostic Mode:
1. Turn OFF the treadmill.
7.1
2. L7 & L8 Executive Trainer -Press MENU and START
simultaneously.
3. For all other L7 & L8's - Press DISPLAY (or UP ARROW -
and START simultaneously.
Is the red GRADE lamp on the SCR lit?
7.2
Does the treamill go up when UP is pressed and
down when DOWN is pressed in this mode?
7.3
Remove the 6 pin elevation connection from the
SCR control board. Is either the yellow DOWN lamp
or the yellow UP lamp on the SCR lit?
7.4 Does the yellow UP lamp on the SCR
light when UP is pressed?
7.5
Does the yellow DOWN lamp on the motor control
board light when DOWN is pressed?
Replace elevation motor.

Elevation system failure; "PO" error.

NO
NO
NO
YES
YES
Grade pot out of
Δ
calibration or failed.
)
YES
Recalibrate pot.
(See Page 74)
Grade pot out of
calibration or failed.
YES
Recalibrate pot.
(See Page 74)
Replace SCR.
YES
Replace SCR.
NO
Replace SCR.
NO
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