D-Link DP-G321 - Manual (Page 11)

11
Immediately after power-up, three of the green LEDs should illuminate steadily for
several seconds. Then the USB LED should flash three times. Irregularity of the
LED during this LED test may mean there is a problem with the LED itself.
The actual component tests immediately follow the LED tests. A normal (no fault)
result is signaled by a flashing of the USB LED, followed by a darkened LED.
If the Self-Test routine detects any component error, then following the LED tests
the Self-Test will halt and the LEDs will continuously signal the error according to
the following table.
When the DP-G321 is powered ON, it also automatically performs a Self-Test on
each of its major components. The final result of the Self-Test is signaled by the
state of the USB LED indicator following the Self-Test. Preliminary to the actual
component tests, the LED indicators are tested to confirm their steady and flashing
operation.
Power ON Self-Test
Every DP-G321 has been factory-tested to operate properly.
USB LED
Faulty Component
low speed flashing Need to reload firmware
steady ON DRAM error
1 long 2 short
1 long 3 short
1 long 5 short
1 long 6 short
1 long 7 short
1 long 11 short LAN I/O base error
LAN memory error
LAN Controller error
Flash Erase/Program error
Flash Protected
Timer INT error
1 long 18 short USB error
1 long 15 short
1 long 16 short
1 long 17short
Wireless LAN card detect error
Wireless LAN card CIS error
Wireless LAN card I/O error