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Appendix
A. POST procedure
After the power has been turned on, Video Server 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
LED2 and LED3 blink at same
time
LED2 ON and LED3 OFF
LED2 OFF and LED3 ON
LED2 ON and LED3 ON
LED2 blink and LED3 ON
LED2 ON and LED3 blink
Ethernet interface failure includes not only components on board but also Ethernet cable
DVS-301 User Manual v1.00
Building Networks for People
Possible failed component Failed function
U32(SAA7113)
U1(TM1300)
U6(RTL8139C)
U6(RTL8139C), U7, U8
U22(M5823)
U19(16C1550CJ), P2
80
Video decoder
PCI bridge of TM1300
Ethernet controller
Ethernet interface*
Real-time clock
COM interface
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