Diagnostics, Function Color Definition

Diagnostics

The Cable Modem has five status LEDs for diagnostics. You can monitor the LEDs during installation and during normal operations .

Table 1 shows Cable Modem status LEDs and identifies what each LED light means. This table will help you to diagnose problems.

Function	Color		Definition
Power	Green	-	dark for power off
		- solid for power on
Cable	Green	-	dark for no downstream RF carrier present or
			power off
		- flashing slowly (*1) for downstream RF carrier
			present and initial ranging in progress
		- flashing fast (*2) for registration in progress
		- solid for the Cable Modem registered and ready
			to transfer data
PC	Green	-	dark for no carrier to/from PC present or power
			off
		- solid for carrier to/from PC present
Data	Green	-	dark for no user data going through the Cable
			Modem to/from PC present or power off
		- flashing for user data going through the Cable
			Modem to/from PC present
Test	Amber	-	dark for initial self-test of the Cable Modem OK
			or power off
		- flashing for initial self-test of the Cable Modem in
			progress or software down loading of the Cable
			Modem in progress
		- solid for self-test failure of the Cable Modem
		Table 1	Status LEDs

(*1) flashing slowly : flashing every 2-seconds (approximately)

(*2) flashing fast : flashing every 1-second (approximately)