User's Manual

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Checking the status of the system’s LED Indicator
After turning on the switch of the power supply in BIU, check information on each
module’s LED of the system. The table below shows normal/abnormal cases
depending on the status of each module’s LED.
LED information
Unit LED Indicates
ON Green: MDBU is normally power-supplied.
Green: MDBU is normal.
MDBU
ALM
Red: MDBU is abnormal; check the alarm through RS-232C.
ON Green: MCPU is normally power-supplied.
TXD Green flicker: TX signals are transmitted to communicate with ROU.
RXD Green flicker: RX signals are received from ROU.
Green: BIU system is normal.
MCPU
ALM
Red: BIU system is abnormal; check the alarm through RS-232C.
ON Green: BIU is connected with power and MPSU works normally.
Green: DC output is normal.
MPSU
ALM
Red: DC output is abnormal.
MDBU Setting
Insert MDBU into BIU. Check if the “ON” LED Indicator at the front panel of MDBU is lit green.
Make connection with DEBUG port of MCPU through RS-232 Cable (Direct Cable).
Check if the ID of MDBU module is searched for in those 1~4 slots of MDBU through GUI.
When you select the tab of a corresponding slot (MDBU 1~4) from the main window, you can
inquire and set the status of a corresponding MDBU module.