AT&T 410, 820, 206 manual Troubleshootlng Chart, Trouble Possible Cause Do This

Troubleshootlng Chart

If something goes wrong in the operation of your MERLIN system, use the following troubleshooting chart to determine the possible cause of the problem. In many cases, you can clear the trouble yourself without the need for a service call.

Trouble	Possible Cause	Do This
You cannot make an outside call.	The problem may be the telephone	• Plug a standard modular telephone into the
	company lines.	telephone company wall jack for your in-
		coming line that has the trouble.
		• If you experience the same problem when
		you use the standard modular phone,
		report the trouble to your local telephone
		company.
	The Outward Calls switches on the	• Set Outward Calls switches to Yes (up).
	control unit are set to No (down).
	The Tone/Pulse switch on control unit	• Set the Tone/Pulse switch to Pulse. If you
	is not set correctly.	purchase Touch-Tone service from the
		telephone company, set the switch to Tone.
All voice terminals are dead; that is,	All connections may not be secure.	• Check the connections plugged into each
there are no lights, no dial tone.		voice terminal, the control unit, and the
		telephone company line jacks.
		• If there are any loose connections, make
		them secure.
	There is no power to the control unit.	• Make certain that the On/Off switch is set
		to the On position.
		• If the green light on the control unit is off,
		plug something else into the ac outlet to
		see if it is supplying power. (Make sure the
		control unit is not plugged into a switch-
		controlled outlet.)
The red warning light on the control	The cartridges may be loose.	• Unplug the control unit.
unit is lit.		• Make sure that all cartridges are firmly
		seated in the control unit slots.
		• Plug in the control unit.
		• Wait for a full five minutes.
		• If the red light goes out (and stays out), the
		trouble is cleared up.
		• If the red light remains on, call your equip-
		ment supplier.
The voice terminals do not ring.	The volume control is turned off.	• Turn up the volume.
	The lines are programmed not to ring.	• Program line ringing as desired.
	The Do Not Disturb feature is activated.	• Touch Do Not Disturb to deactivate the
		feature. (The green light goes off.)
		• If the buttons on your voice terminal are not
		labeled, check each programmable button
		to see if the green light next to it is on; the
		Do Not Disturb feature should be on one
		of those buttons. Then, reprogram those
		buttons.

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