Mec Speed Level 2684 RT Service And Parts Manual page 81

F48:BAD PRESSURE
This message is given if the pressure sensor output (P8-2 and P8-6) is out of range at the
start of calibration.
The height sensor output must be between 0.5V and 4.5V.
Check DIAGNOSTICS / SENSORS to see the output. A reading of 0V or 5V is probably
due to a wiring problem.
F52:NOT CALIBRATED
This message is a catch-all code which indicates an improper calibration sequence or that
one of the phases of calibration was not completed. The skipped phase must be com-
pleted or the calibration sequence must be passed through in proper sequence before this
message will clear. Re-start the calibration sequence and proceed through each
sequence in the specified order.
A "Redo" prompt will appear before each sequence. Answer "NO" if there is no reason to
repeat or "YES" if the phase must be completed.
"3084 Speed Level™ Sigma Lift" Service and Parts Manual
G P4 0 0 C M
O N T R O L O D U L E
S C P
E T U P A L I B R A T I O N
November 2009
R O B L E M S
Page 2-29