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The SCU board is a main control board that provides softswitch services and processes media control protocols. The SCU board supports three board working modes: single-network-port mode, dual-network-port mode, and triple-network-port mode.

Figure 1 shows the SCU board.

Figure 1 Description of SCU board indicators

U1900_mntg_image_f_u1960_mntg_00226_01

Indicators in different status represent the running status of the device. Table 1 describes the indicator status.

Table 1 Status of SCU board indicators

Indicator	PWR	Color	Status Description	Troubleshooting
Power indicator	PWR	Green	ϒ⁄On: The power supply is normal. ϒ⁄Off: There is no power supply.	ϒ⁄No power supply. When this occurs, check the power cable connection. ϒ⁄Board fault. See Emergency Maintenance of the UScale X1900 series to rectify the fault.
Running indicator	RUN	Green	ϒ⁄Blinking: The board is running normally. ϒ⁄Steady on: The board is faulty. ϒ⁄Off: No power is supplied or the board is faulty.	ϒ⁄No power supply. When this occurs, check the power cable connection. ϒ⁄Board fault. See Emergency Maintenance of the UScale X1900 series to rectify the fault.
Alarm indicator	ALM	Red	ϒ⁄Steady on: A critical alarm exists. ϒ⁄Blinking: A major or minor alarm exists. ϒ⁄Off: No alarm exists.	An alarm is generated. Log in to the LMT, double-click the alarm, and handle the alarm as prompted.

Parent Topic: Checking Equipment Indicators

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Checking SCU Board Indicators

Checking SCU Board Indicators