Troubleshooting Guide; General Vxp System Problems - Honeywell VXP System Maintenance Manual

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.
Symptom
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
2. Ensure that AU is powered
on
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.
The "VXP Out Of Sync"
message is displayed.
The "Access is Denied"
message is displayed when
attempting to connect the DU to
the AU.
Table 4-9. Common VXP System Problems
Probable Cause
Serial cable not connected.
AU power turned off.
AU out of sync with DU.
If this problem persists, download and check the VXP fault
log, saving it for future reference. If necessary, contact
Chadwick Helmuth.
AU out of sync with DU.
The wrong COM port is
selected in the DP.
Corrective Action
Connect serial cable.
Turn on AU power.
Cycle AU power and re-
connect.
Cycle AU power and re-
connect.
Pull down the Comm menu
in the DP main window.
Select Comm Port Settings.
Select the correct COM port.
VXP System Maintenance Manual 4-13
Maintenance