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Appendix
A. POST procedure
After the power has been turned on, NetworKam will perform a self-diagnostic to locate any possible
hardware defects. If the power indicator is dim at the beginning, the power fails to proceed further. While
the POST is proceeding, the status LED indicators will keep blinking interchanged until finished or any
fatal error happens. If either status LED indicator is dim at the beginning, the LED may be broken.
Any possible fatal error has a special pattern shown in the following table. LED2 is the one below the
network indicator and LED3 is the lowest one. If the POST is successful, status LED indicators will both
shut off for a while and then light depending on the chosen network interface. If Ethernet is available,
LED2 will flash like a heartbeat after network installation is done. Otherwise if modem is available,
LED2 will flash alike to indicate listening for dial-in connection while LED3 is lit. If the included null
modem cable is connected, both LEDs will stay on and then LED2 will start flashing after the connection
from the PC is opened for configuration and LED3 stays lit.
LED pattern after POST Possible failed component Failed function
LED2 and LED3 blink at same time U32(SAA7113) Video decoder
LED2 ON and LED3 OFF U1(TM1300) PCI bridge of TM1300
LED2 OFF and LED3 ON U6(RTL8139C) Ethernet controller
LED2 ON and LED3 ON U6(RTL8139C), U7, U8 Ethernet interface*
LED2 blink and LED3 ON U22(M5823) Real-time clock
LED2 ON and LED3 blink U19(16C1550CJ), P2 COM interface
Ethernet interface failure includes not only components on board but also Ethernet cable and the
devices of the opposite end.