Nortel Meridian 1 Manual page 141

4-62 SL-1 ST and STE system upgrades
553-3001-250 Standard 14.00 August 1996
When the sysload is complete, the system automatically invokes the
initialization program. The red column LEDs should go off. When the
initialization is complete, the system automatically runs the programs in the
midnight routine.
Note: The red LEDs on the NT8D04 and QPC414 network cards remain
lit until the network loops are configured and enabled.
Connecting power for DC-powered systems
1 Set the MAINT/NORM switch on the NT6D66 CP card to MAINT.
2 Set the main AC circuit breaker to each rectifier to OFF.
3 For each rectifier, test the commercial power source for proper voltage
(see Meridian 1 installation planning (553-3001-120) for voltage
requirements).
4 Remove all distribution fuses, or set all distribution breakers to OFF, on
the DC power source for each column.
5 Set all circuit breakers in the rear of each pedestal to OFF.
6 Set the switch on each module power supply and ringing generator (if
equipped) to OFF.
7 Set the switch on the blower unit in the front of each pedestal to OFF.
Note 1: If a problem is found in any of the following steps, resolve that
problem before continuing.
Note 2: If reserve batteries are equipped, the volt meter on the DC
power source should show approximately –48 V.
8 If not already done, connect each rectifier to its associated AC outlet and
set the breakers in the power panel to ON.
9 Turn on the rectifiers, one at a time, waiting about 10 seconds between
one rectifier and the next. Voltage at the distribution meter should go to
about 54 V (equalize voltage) or 52 V (if equalize voltage has not been
set up).
Note: Perform steps 10 through 13 for each column with the CPU
columns last.