JLG 740A, Service And Maintenance Manual

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SECTION 4 - BOOM & PLATFORM
3121160 – JLG Lift – 4-57
6. The controller will now display the following:
or, by pressing the up and down arrow keys:
7. When the "YES" message is displayed, press the
"ENTER" key to automatically perform a func-
tion test. Upon the function test, the system will acti-
vate the Upright Monitoring System, warning lights,
and alarm. Verify that the alarm sounds, the boom
malfunction indicator lights (platform and ground)
are illuminated.
8. From the ground controls, raise the tower boom sev-
eral feet. Verify that the tower boom will not lower.
9. To end the system test, press the Emergency Stop
Switch (EMS) at the ground controls. Upon loss of
power (pressing the EMS) to the system, the upright
monitoring system will reset and all functionality will
be restored to the machine.
Service Mode/Tower Boom Retrieval
The UMS software incorporates a service mode to tempo-
rarily disengage the UMS and allow a tower lift down oper-
ation when the UMS has detected a backward stability
concern.
ON ADE EQUIPPED MACHINES, DO NOT CONNECT TO THE ANA-
LYZER CONNECTION PORT INSTALLED WITH THE UPRIGHT MON-
ITORING SYSTEM MODULE.
1. Connect the hand-held analyzer at the ground con-
trol station using the four-pin connector.
2. Pull out the emergency stop button at the ground
control station and turn the key switch to ground
controls. Start the engine.
3. Advance to access level 1 by scrolling to the
ACCESS LEVEL menu and press "ENTER" .
Using the arrows on the keypad, enter the password
"33271" and press "ENTER" .