Manitowoc Published 07-19-16, Control # 249-01 3-35
2250 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
PROGRAMMABLE CONTROLLER (PC) I/O
BOARD FAULT TROUBLESHOOTING
General
This section will assist in troubleshooting the model 2250
programmable controller
(PC) for communication errors.
The PC communication errors activate the system’s fault IO
BOARD FAULT n, where n identifies the input/output
board(s) with which the PC is having difficulty
communicating.
When an I/O board fault is on, all inputs to the PC are
disabled. This prevents the crane’s operator from being able
to navigate through the display screens. The System Fault
screen is the only active screen. The next power cycle of the
PC resets and clears the fault if communication to the board
has been restored.
To assist in troubleshooting, it is imperative the crane’s
operator or field service technician follows these steps
before calling the Manitowoc Crane Care Lattice Team for
technical support.
Prior to troubleshooting, read through the entire procedure
for familiarization. When calling technical support, be
prepared to supply all information noted below.
FIGURE 3-25
Item Description
1 Crane Controller
2 Motherboard
3 Rear Cab Wall
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