Cables to Go TE100-S55 - Manual (Page 41)

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Chapter 5 Diagnostics
Power-On Self Test
A Power-On Self Test (POST) sequence takes place when the
TE100-S55 is first turned on (cold boot). Software reset (warm
boot) through the RS-232 port does not prevent unauthorized
remote re-boots.
The POST sequence checks the system integrity by performing
the following tests:
− System boot
− RAM test
− Timer and interrupt controller tests
− Cache controller test
− RS-232 diagnostic port test
− BIOS test
− EEPROM checksum test
− Program load checksum test
− Ethernet ports test
Besides the Power On/Off LED, there are eight system Status
LEDs used to display the results of these tests during the POST
sequence. The LED status further display test results in two
categories, the System test and the Port test. Any errors from the
System tests means that the Switch failed to function. Any
error(s) from the Port test effects that individual port and the
remaining ports will be operational.