
2.Series 15i
ii
i-A MAINTENANCE INFORMATION VI. MAINTENANCE B-63354EN/04
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2.1.2 LED Indications
The Ethernet board has the following LEDs: Four green STATUS
LEDs and one red ALARM LED for indicating the status. Two green
LEDs and one red LED for indicating the communication status. The
figure below shows the locations of these LEDs. The table below
explains the LED lighting states.
In the following explanations, the LED lighting states are expressed as
follows:
o: Off n: On ¶: Blinking à: Don't care
NOTE
The dashed lines indicate the faceplate.
LED lighting sequence at power on
No. LED indication Ethernet board state
1 STATUS oooo Power off
2 STATUS nnnn Initial state after power on
3 STATUS nnno MPU initialized.
4 STATUS nnoo Firmware downloaded.
5 STATUS nooo Control migration to OS
6 STATUS onnn OS PHASE1
7 STATUS onno OS PHASE2
8 STATUS onon OS PHASE3
9 STATUS onoo OS PHASE4
10 STATUS ooo¶ Startup completed.
The system enters No.10 status when the Ethernet board starts up
normally. This status is maintained until an error occurs.
CD38L
4(STASUS)(GREEN)
3(STATUS)(GREEN)
2(STATUS)(GREEN)
1(STATUS)(GREEN)
B(PAR)(RED)
6(RX)(GREEN)
5(TX)(GREEN)
(COL)(RED)