
17
System Fault Conditions
A-2-B alarm ( Alarm 60)
This code is caused by an open circuit in the A-2-B switch.
Actions to take; Fully retract the boom and lower the angle to zero degrees.
1.
Check if the machine is in a A-2-B condition, lower hook block.
2.
Check if the cable or connectors are damaged between the switch to the display.
3.
Remove the four screws in the switch cover and check the micro-switch for continuity.
or +12vdc supply voltage.
4.
Check for moisture, dry and seal connector.
5.
Replace the switch or cable.
6.
Call for service if code is still present.
Fig 9
3B6
Troubleshooting Manual
The circuit is supplied at 10-30 vdc.
A-2-B wire terminal
Connector terminal
Yellow wire 22
N 4.7k resistor inline
White wire
21
L
Cable reel end.
Cable reel wires
Connector wire terminals
Red wire
N
White wire
L