Nortel Networks BCM1000 manual Power connections, LED state Power Status Green LED, Flashing, Off

Chapter 2 Telephony hardware 35

LED state	Power	Status
Green LED
On	Normal operation	All monitored services
		are working.
	N/A	KSU startup (slow flash)
		or (fast flash) there may
Flashing		be a problem with the
		DS256 cable or the
		DS256 clock
Off	Module is not	Module not powered
	powered	(reseat module) OR
		hardware fault (replace
		module)
*Red LED
On	Power converter	N/A
	failure. Power to
	telephones may not
	be within spec.
	(check base unit
	LEDs for possible
	power issue or
	replace module)
	N/A	Loss of DS256 clock, or
		DS256 cable may be
Flashing		disconnected.
* Not all modules have red LEDs

Power connections

The back of the modules have a single connector that provides a DS256 connector and power to the module. These connectors plug into the back of the media bay on the BCM1000 or BCM1000e. Some modules also have a cooling fan that runs off the module power source. Figure 13 shows the rear views of the two types of modules.

Figure 13 Rear of modules showing DS256 and power connectors

DS256 and power connector

Module wires are vul- nerable to breakage. See Warning below.

Cooling fan

DS256 and power

connector

Installation and Maintenance Guide