NO LIGHTS OR DIAL
TONE
Symptom: All voice terminals are without lights or dial
tone.
Possible Cause
Possible Solution
To lnvestigate Further
1. The control unit is not
Follow the instructions under
If the green power light on
receiving power.
the control unit is on and the
on page 4-55.
trouble remains, call the
If the green power light is on
equipment supplier for
and the trouble is gone, the
assistance.
problem was corrected when
If the green power light is
you reset the control unit.
off, go to Possible Cause 2.
2. The power outlet is
Make sure the control unit is
If the control unit is not
controlled by a wall switch.
not plugged into an outlet
plugged into a switch-
controlled by a wall switch.
controlled outlet go to
If the control unit is plugged
Possible Cause 3.
into a switch-controlled
outlet and the switch is
turned off, power off the
MERLIN II system and move
the plug to another outlet
See “Power to the System’”
on page 2-90 to turn the
power off.
3. Faulty power outlet.
Test the outlet by plugging in
If the appliance works, the
an appliance such as a lamp
problem is caused by the
or a calculator. If the
control unit Call the
appliance doesn’t work the
equipment supplier.
outlet is faulty. Have it
repaired by an electrician.
Procedures for Specific Symptoms 4-45
Summary of Contents for administration and
Page 40: ...FIGURE 1 9 System architecture Theory of Operation 1 37 ...
Page 175: ...Top cover Front cover FIGURE 2 27 Control unit covers Testing the System 2 107 ...
Page 211: ...FIGURE 3 I A MERLIN II System Display Console The Administrator Attendant Console 3 3 ...
Page 213: ... FIGURE 3 2 A BIS 34D Console The Administrator Attendant Console 3 5 ...
Page 331: ...General Tests 4 55 Reaming the Control Unit 4 55 Testing Outside Lines 4 56 ...