US Utah-400, Setup And Operation, Page: 121 / 157

144x144 Router
5-7
Control Subsystem Troubleshooting Table
Control Subsystem Troubleshooting Table
Use the following table to troubleshoot specific control subsystem problems. The numbers in
the left-hand column indicate specific references from the Control column in the
Main Trou-
bleshooting Table .
TABLE 2-5.
Control Subsystem Troubleshooting Table
Problem Check
1 No control of any level
•
Internal controller operating (see below)
•
External controller connected
•
Control panels connected (see below)
•
MX bus terminated (see below)
•
U-Net terminated (see below)
•
Completed controller software upgrade
2 No control of individual sig-
nal level or levels
•
MX bus cable connected (see below)
•
MX bus correctly terminated (see below)
•
Is non functional signal level address set correctly (see
•
below).
•
Control panel programmed correctly (see "Operations")
•
Output locked or protected on that level (see "Opera-
tions")
3 Control panel not functional
•
Panel address set to unique number
•
Completed panel software upgrade
4 Serial control port not func-
tional
•
Communications baud rate incorrect
•
Serial control Protocol incorrect
•
Serial control cable wired correctly
5 Ethernet port not functional
•
Ethernet option fitted
•
Connected to PC directly by null cable
•
Connected to network via gateway
6 Alarm active
•
Active CPU indicator extinguished (SC-4)
•
Heartbeat indicator extinguished (SC-4)
•
MX activity light does not flash (SC-4)