Cabletron Systems MICRO-CS, Installation Manual

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Chapter 4: Troubleshooting Procedures
4-4 Micro-CS Installation Guide
4.2.1.3 SETUP Mode Error-Free Sequence
Table 4-3 summarizes the indicator sequences that display in SETUP
mode during an error-free start-up. A description of each sequence
follows Table 4-3.
Key:
●
= On continuously
✕
= Off
■
= Flashing irregularly
◆
= Flashing regularly (about 1Hz)
Activity T1: Testing Indicators
All front panel indicators except the non-selected segment LEDs, light for
a few seconds, then all indicators turn off. This sequence confirms that all
indicators are operational. At this point the Micro-CS is in normal mode.
Press the SETUP switch to put the Micro-CS into monitor mode.
Activity T2: Testing the Hardware
During power-up the Micro-CS runs self-tests that execute CPU
diagnostics, ROM and E2 PROM, flash checksums, refresh, internal
serial port and LAN loopbacks, and RAM tests. The NET indicator
flashes during the tests. After completing the power-up self-tests the
STATUS indicator remains on.
Activity T3: At the Monitor Prompt
When the STAT and ATTN indicators are on, the ROM Monitor prompt
displays on the console terminal. Enter the boot command at the prompt.
If you did not enter a file name with the command, a prompt asks you for
one.
Table 4-3 SETUP Mode Error-Free Indicator States
Activity
STATUS
green ATTN
amber NET
green
T1: Testing Indicators
● ● ●
T2: Testing hardware
● ✕ ■
T3: At monitor prompt
● ● ■