Power On Self-Test - D-Link DP-303 Hardware User's Manual

Power On Self-Test

When the Print Server is powered on, it 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 LPT1, LPT2, and LPT3 LED
indicators following the self-test.
component tests, the three LED indicators are tested to confirm their
steady and flashing operation.
Immediately after power-up, all five of the LED's should show steady
green for several seconds. Then the LPT1, LPT2, and LPT3 LEDs
should flash on simultaneously three times. Irregularity of any of
the three LEDs during these LED tests may mean there is a problem
with the LEDs themselves. Contact your dealer for correction of any
LED problems before proceeding.
The actual component tests immediately follow the LED tests. A
normal (no fault) result is signaled by a series of three cycles of
sequential flashing of the three LEDs, followed by a quiescent state
with all three LEDs dark.
If the self-test routine traps any component error, then following the
LED tests the self-test will halt and the LED's will continuously
signal the error according to the following table. In the event of any
such error signal, contact your dealer for correction of the faulty unit.
LPT1
off
off
8
LED Name
LPT2 LPT3
off on/steady
off flashing
Preliminary to the actual
Faulty
Component
LPT3 error
Parallel-3 Controller error
Unpacking and Installation