user manual

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Routine Maintenance Procedures
Page 5-7Restoring Power
5
Procedure for Single Carrier Cabinet PPN
This procedure applies to single-carrier cabinet PPNs with or without high or
critical reliability, where the cabinet is powered by either AC or DC power.
NOTE:
In a high or critical reliability system, if power is to be removed from an
individual cabinet only, make sure that the affected cabinet does not
contain an Expansion Interface circuit pack that is part of the Active
Expansion Link or an Active Tone-Clock. To determine which Expansion
Interface Link and Tone-Clock are active, issue the status system
command. To determine the synchronization reference, use the display
synchronization command.
1. Restore power as follows:
NOTE:
If the cabinet is powered by a 676B Power Unit, the 676B must have
been powered off for at least 10 seconds before being powered on.
If not, the 676B Power Unit does not restart.
■ In an AC-Powered system, turn on the power in each cabinet
individually. The ON/OFF switch is located at the back of the
cabinet behind the WP-91153 Power Unit.
■ In a DC-Powered system, turn on the power in each cabinet
individually. The ON/OFF switch is located at the back of the
cabinet behind the 676B Power Unit.
2. Make sure that the translation card is properly inserted into the slot.
3. The system now goes through the rebooting process.The translations are
loaded from the translation card, and rebooting takes about three minutes.
4. When system power is restored, the appropriate display is shown on the
administration terminal.
The display is the same as a reset system 4 that is described in ‘‘
Reset
System 4 (System Reboot)’’ in Chapter 4, ‘‘Initialization and Recovery’’.
5. After the system reboot is finished and all trouble is cleared, return the
EMER XFER (Emergency Transfer) switch(es) to AUTO. This restores the
system to the normal operating mode.
6. Reset the time using the set time command. Use display time command
to verify.
Procedure for Single-Carrier Cabinet EPN
Power may be restored to the EPN without affecting the PPN.