Voice Terminal Power Supply - AT&T Merlin 820 Service And Maintenance Manual

Step 8. Perform the action that first revealed the trouble.
IF
The trouble remains,
The trouble no longer appears,
Reconnect the voice terminals and accessories you disconnected in Step 4.
Step 9.
Step 10. Unplug the control unit power cord from the ac outlet and plug it into the
AC Outlet on the auxiliary power unit.
Step 11. Plug the auxiliary power unit connector into the control unit socket
labeled Auxiliary Power.
Step 12. Connect the auxiliary power unit to an ac power source.
Step 13. Proceed to Test B or Test C for the accessory with trouble.

Voice Terminal Power Supply

Perform this test only if you have an accessory connected to a 34-button
Step 1.
deluxe voice terminal. Make sure the voice terminal power supply is prop-
erly connected to the 103A Modular Jack (it can also be connected to a ter-
minal extension cord) and that power is being supplied from the ac outlet
for the voice terminal power supply. Use a lamp, radio, or similar device
to check the ac outlet (see Figure 38).
Trouble on an Accessory
THEN
The auxiliary power unit is not the
source of the trouble. Go on to
Step 9.
Trouble found. It is caused by
the auxiliary power unit. Do not
reconnect the voice terminals and
accessories disconnected in Step 4.
Read the section on Maintenance
Exchange Procedures at the end of
this manual.
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