Qlogic SANbox 3810, Installation Manual

Page: 65 / 92

Diagnostics/Troubleshooting
Power-On Self Test Diagnostics
59268-00 A 4-3
A
If there are no errors, the Heartbeat LED blinks at a steady rate of once per
second. If a critical error occurs, the Heartbeat LED will show a blink pattern that
indicates an error and the System Fault LED will illuminate. If there are non-critical
errors, the switch disables the failed ports and flashes the associated Logged-In
LEDs. Refer to
“Heartbeat LED Blink Patterns” on page 4-3 for more information
about Heartbeat LED blink patterns.
Heartbeat LED Blink Patterns
The Heartbeat LED indicates the operational status of the switch. When the POST
completes with no errors, the Heartbeat LED blinks at steady rate of once per
second. When the switch is in maintenance mode, the Heartbeat LED illuminates
continuously. Refer to
“Recovering a Switch Using Maintenance Mode” on
page 4-7 for more information about maintenance mode. All other blink patterns
indicate critical errors. In addition to producing a heartbeat error blink patterns, a
critical error also illuminates the System Fault LED.
The Heartbeat LED shows an error blink pattern for the following conditions:
„
1 blink – Normal operation
„
2 blinks – Internal Firmware Failure Blink Pattern
„
3 blinks – Fatal POST Error Blink Pattern
„
4 blinks – Configuration File System Error Blink Pattern
„
5 blinks – Over Temperature Blink Pattern
Internal Firmware Failure Blink Pattern
An internal firmware failure blink pattern is 2 blinks followed by a two second
pause. The 2-blink error pattern indicates that the firmware has failed, and that the
switch must be reset. Momentarily press and release the Maintenance button to
reset the switch.
2 seconds