Appendix, A. troubleshooting, A.1 power-on-self-test – Vivotek VS2403 User Manual
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Appendix
A. Troubleshooting
A.1 Power-On-Self-Test
After the power has been turned on, Video Server will perform a self-diagnostic to detect 
any possible hardware defects. If the power indicator is dim at the beginning, the system 
fails to proceed further without power. 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. LED1 is the 
one below power indicator and LED2 is the lowest one. 
 
LED pattern after POST Failed function 
Troubleshooting
LED1 off, LED2 off
Ethernet network
1. Check the LINK LED of the
attached port on the Ethernet 
switch or hub. If it is dim, the 
Ethernet cable may be loose or 
cross-over. 
2. If the cable is OK, the Ethernet
controller is broken. Ask your 
reseller for technical service. 
LED1 blinks one time and 
LED2 blinks 4 times 
Ethernet network
The Ethernet controller is broken. 
Ask your reseller for technical 
service. 
LED1 blinks one time and 
LED2 blinks 3 times 
System
The PCI interface cannot work. Ask 
your reseller for technical service.