Specifications

5-48
Reference Guide
Model No.
Running Head
CPU Card Error Messages CPU Card
5.8 CPU Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
5.9 CPU Card Troubleshooting
On power-up, the CPU card performs a self-test. This is the only diagnostic available for the
CPU. A “healthy” active CPU will have a green LED lit on the front panel. A “healthy”
redundant CPU will flash between green and amber LEDs.
The indications that a CPU is not on-line are:
•
Continuous amber alarm LED on front panel AFTER the system has been registered
during initial installation. Prior to registration, the amber LED is an indication that
registration needs to occur before the system can be fully operational.
•
Inability to communicate with the system by any means (VT-100 Term, Telnet, etc.).
Because the CPU and Interface card work together to support a system, follow this general
sequence:
1. Verify that the CPU card's US/EUR jumper (HD1) is correctly set to match the US/EUR
jumper on the chassis.
2. Verify that both CPUs in a redundant system are of the same firmware revision.
3. First replace the CPU. If the problem continues, replace the Interface Card.
Note:
Removal of an active CPU or Interface card will cause a service disruption on the
entire system.
4. If the CPU card is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.