AT&T 518-600-016 manual Digital set with data stand

LIGHTS, SPEAKER, RINGING PROBLEMS

Symptom: There is trouble with voice terminal lights, speaker, and/or ringing.

Possible Cause	Possible Solution	To Investigate Further
1. A faulty control unit or	Analog set: Slide the T/P	GO to Possible Cause 3.
Power Supply Module.	switch on the left side of the
	voice terminal to the T
	position and hold it there if
	necessary. If all the red and
	green lights flash alternately
	and a tone sounds
	continually, the analog set is
	working properly.
	Digital set with data stand:	Go to Possible Cause 3.
	Turn the voice terminal over
	and press the recessed Self-
	Test button on the data stand
	with a pointed object such as
	a straightened paper clip. If
	the lights come on but do not
	flash. The digital set is
	working properly.
	If some (but not all) of the	Go to Possible Cause 2.
	lights flash continually
	and/or a tone sounds at
	irregular intervals, the
	trouble is caused by the voice
	terminal or the cable
	connection.
	If all lights are off and a tone	Go to Possible Case 2.
	sounds continually or
	irregularly the trouble is
	caused by the control unit,
	the voice terminal, or the
	cable connection.
	(continued)

Procedures for Specific Symptoms 4-41