AT&T MERLIN 820 User Manual

Basic Trouble Tests
E.
All Voice Terminals Have No Lights and No Dial Tone (Entire
System Down)
Step 1.
Determine if your control unit is connected to an auxiliary power unit.
IF
THEN
You are NOT using an auxiliary
Skip to Step 13.
power unit,
You are using an auxiliary power
Go on to Step 2.
unit,
Step 2.
Check the auxiliary power supply to see if its green light is on (see Fig-
ure 6).
IF
THEN
The light is on,
Skip to Step 12.
The light is NOT on,
Go on to Step 3.
THE GREEN POWER ON
LIGHT IS LOCATED HERE
AUX. AC
POWER
OUTPUT
AC
INPUT
Figure 6—Auxiliary Power Unit
Page 21

AT&T MERLIN 820 Specifications

General

Brand	AT&T
Model	MERLIN 820
Category	Conference System
Language	English