Service manual

Troubleshooting 3-5
3.2 System Management Console Problems
If the system management console connected to the local terminal port
on a standard I/O module does not operate, the problem could range
from broken hardware to unequal baud rates on the serial line.
Table 3– 2 Console Problems
Symptom Possible Cause Indicator
Power-up
display not
seen on the
system
management
console
- System management console not
plugged in
- Path from the master standard I/O
module to the system console problem
- Baud rate of console device and COM1
not the same
- Console environment variable not set
to serial
- Mouse or keyboard connections poor
- Mouse or keyboard broken
- Terminal emulator software not set up
properly (See Appendix D.)
CPU run LED
off
No display
None or strange
characters seen
No display
Console device
does not respond
Console device
does not respond
No display