AT&T 518-600-016 manual To Turn the Power Off Normal Operation

TO Turn the Power On 1 If there is an Auxiliary Power Unit(s), plug it (them) into the ac outlet.

2 If there is an expansion carrier(s), set that power supply switch to the ON position.

The green power light on the Power Supply Module goes on.

3 Set the power switch on the basic carrier’s Power Supply Module to On.

The green power light on the Power Supply Module goes on.

The red warning light on the Processor Module should go off in 30 to 45 seconds.

To Turn the Power Off

Normal Operation

1First turn off the power at the basic carrier.

2Then turn the power off at the expansion carrier(s).

3Finally, if there are Auxiliary Power Units, unplug them from the ac outlet. Because the MERLIN II Power Supply Modules are already OFF, the auxiliary power cord removal sequence is not important.

If the system is operating properly, you will find these indicators:

●The green power light on the Power Supply Module remains on.

●The red light on the Processor Module goes on for 30 to 45 seconds during power-up and then goes off.

●All indicators on the Tie Line Module remain off when that module is idle. See “Tie Line Module, Status Indicators” on page 1-25.

If any of the conditions listed have not occurred, refer to Section 4, “Troubleshooting.”

Installing the Control Unit 2-91