JLG 1250AJP Service Manual - Manual (Page 493)

SECTION 6 - JLG CONTROL SYSTEM
3121171 – JLG Lift – 6-61
The Control System will disable all functions except
auto platform level and main lift up. The Control Sys-
tem will energize tower tele out with the main lift up
command. The analyzer will display “CAL FAILED”
and “TWR NOT OUT” if movement of either tower
length sensors is detected.
2. After pressing the ENTER key , the analyzer will
display “CALIBRATING…”on the bottom line and
record right main boom max angle, left main boom
max angle. The main boom max angle will be set at
145.0 (ref tower). The right main boom angle sen-
sor reading must be within 155 and 175 and the
left main boom angle sensor reading must be within
5 and 25 or “CAL FAILED” and “MAIN ANGL1
FAULT” or “MAIN ANGL2 FAULT” will be displayed.
The Control System will calculate and verify the pre-
cise main boom angle reading at main boom trans-
port angle switch trip (from position 2) to be
15.8+6.0/-3.0, otherwise the analyzer will display
“CAL FAILED” and “MAIN A SW FAULT”
Step 7 - Position 7
1. After completing the previous step, the analyzer will
read:
The Control System will disable all functions except
auto platform level and tower tele in. The Control
System will energize main lift up with the tower tele
in command. The analyzer will display “CAL
FAILED” and “MAIN NOT UP” if movement of either
main angle sensors is detected. The Control System
will monitor and record the tower tele in crack point
at which the control system detects movement of
the tower length sensors (if required).