Hitachi Koki USA DDC 35n - Manual (Page 139)

7.1 LED Status Indicator
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This chapter describes normal operation of the NIC in the printer, and
also provides information on how to troubleshoot any problems you
might have with the NIC.
7.1 LED Status Indicator
The NIC has two LED status indicators: amber and green. The amber
LED generally indicates job activity; it flashes when a print job is
being communicated to the NIC; it is off when no activity is occurring.
The green LED indicates the operating condition of the NIC when it is
powered on during normal operation. The following table provides the
conditions that this LED may indicate.
LED Patterns
And the printer
is...
Then The NIC...
Operating
Condition
Green LED is ON
solid.
First powered
on. Is performing self-
tests. Normal
Awaiting print
jobs. Is functioning prop-
erly. Normal
Green LED - blinks
3 times and stays
on. Finished with
self-tests. Prints out status
report. Normal
Green LED blinks
rapidly. Performing
self-tests. Detects bad RAM
chip. Error
Green LED blinks
rapidly 4 times then
pauses. Performing
self-tests. Failed the Ethernet
hardware self-test.
Check the network. Error
Amber LED blinks
short for 10 sec-
onds. Amber LED
goes off and the
Green LED blinks
continuously. Performing
flashmemory
self-tests. Did not pass the
checksum test. Unit
automatically goes
into download
mode and awaits
flash update. Error