Technical data

Functional Description
Overview
2-5
System Failure LED
This red LED turns on momentarily when power-up functions occur. It goes out after the
board computer finds the VMEbus services as the operating system boots.
During normal operation, should VMEbus services fail, the system fail LED turns on.
Power LED
A green LED indicates either a failure or functional mode, depending on the on-off rate.
Table 2-1 lists the blinking rates and their meaning.
Table 2-1 LED Indicators
SYSFAIL
(Red)
POWER
(Green)
Meaning Possible Solution
Off Off No Power Check for board seating in chassis.
On 2Hz Flash Normal Power-on/selftest
On Off Memory Failure Troubleshoot for failed RAM card
or problem with the RAM connec-
tion.
On 1 Flash/sec. CPU (board) Failure Replace the system board.
On 4 Flash/sec. No console identified Check the console search path and
keyboard connections. If no prob-
lem is found, replace the system
board.
On On OS is booted with VME
services failure
Check the Operating System VME
services. Check that VME services
is configured in the kernel.
Off On OS is booted with VME
services OK