Honeywell VXP, System Maintenance Manual, Page: 57 / 105

Maintenance
VXP System Maintenance Manual 4-13
4.4 TROUBLESHOOTING GUIDE
There are three tables in this section. The first table shows common problems that may occur
during operation or functional testing of the VXP system. Using this table, you can isolate the
main component that may need repairing. If a component fails and needs repair, it must be
returned to Chadwick-Helmuth.
The second table lists the error codes for the VXP system and the action codes for clearing the
errors. The third table shows the action codes, and the specific actions that each code requires. If
the VXP displays an error message not shown in the table, it must be returned to Chadwick-
Helmuth for repair.
4.4.1 General VXP System Problems
Table 4-9 lists some of the more common problems that may be encountered while operating the
VXP system, along with the probable cause and corrective action.
Table 4-9. Common VXP System Problems
Symptom Probable Cause Corrective Action
DU and AU fail to connect
The “Time Out!!! VXP is still
waiting for Acquisition Unit...
1. Make sure DU is connected
with AU with appropriate
serial cable
Serial cable not connected. Connect serial cable.
2. Ensure that AU is powered
on
AU power turned off. Turn on AU power.
3. If AU does not reboot within
15 seconds, use Connect/
Disconnect icon to
reconnect”
message is displayed.
The DU and AU fail to connect.
AU out of sync with DU. Cycle AU power and re-
connect.
If this problem persists, download and check the VXP fault
log, saving it for future reference. If necessary, contact
Chadwick Helmuth.
The “VXP Out Of Sync”
message is displayed. AU out of sync with DU. Cycle AU power and re-
connect.
The “Access is Denied”
message is displayed when
attempting to connect the DU to
the AU. The wrong COM port is
selected in the DP. Pull down the Comm menu
in the DP main window.
Select
Comm Port Settings .
Select the correct COM port.