
1.Series 16i
ii
i/18i
ii
i/21i
ii
i-A/PMi
ii
i MAINTENENCE INFORMATION VI. MAINTENANCE B-63354EN/04
- -342
1.1.2 LED Indications
The 16i/18i/21i LCD-mounted Ethernet/data server board incorporates
the following LEDs: Four green STATUS LEDs and one red ALARM
LED for indicating the status. Three 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
LED lighting sequence at power on
No. LED indication 1234 Ethernet/data server board state
1 STATUS oooo Power off
2 STATUS nnnn Initial state after power on
3 STATUS onnn MPU initialized.
4 STATUS oonn Firmware downloaded.
5 STATUS ooon Control migration to OS
6 STATUS nnno OS PHASE1
7 STATUS onno OS PHASE2
8 STATUS nono OS PHASE3
9 STATUS oono OS PHASE4
10 STATUS ¶ooo Startup completed.
The system enters the No.10 status when the Ethernet/data server board
starts normally. This status is maintained until an error occurs.
CD38
STATUS 4(GREEN)
STATUS 3(GREEN)
STATUS 2(GREEN)
STATUS 1(GREEN)
Parity Alarm(RED)
RXLED(GREEN)
TXLED(GREEN)
TPPIL(GREEN)
COLLED(RED)