Power-Up And Boot Procedures - Bay Networks 5393 Hardware Installation Manual

Power-up and Boot Procedures

During power-up and booting, it is more difficult to diagnose
problems because they can originate in the Remote Annex, the
transceiver, the Ethernet, or the load server host. However, the LEDs
provide both a progress report and an error display to assist you in
troubleshooting.
If an error occurs, save the status of these LEDs. Technical
support personnel can use this information to diagnose
problems.
The Remote Annex has two modes of operation: Normal Mode and
Monitor Mode. Normal Mode is the standard operational mode.
Monitor Mode is a diagnostic mode that provides access to the ROM
Monitor commands.
During its power-up and boot sequence, the Remote Annex runs a set
of diagnostics. The system LEDs display the diagnostics' status. The
pattern of the system LEDs identifies the error condition.
Table 4-2 lists abnormal operating conditions reported by the LED
displays, points to possible causes, and recommends corrective
actions.
Remote Annex 5393/PRI Hardware Installation Guide
Chapter 4 Troubleshooting Procedures
4-5