User`s guide

System Repairs
77 A7 48UU Rev03 3-3
3.2 Power Down/power up Procedure
This procedure describes the steps for powering down and powering up the CDA 7.
There are two procedures for powering down:
• routine
• emergency
3.2.1 Routine Power Down
To power down your CDA 7 subsystem:
1. From your GCOS console, set the channels off-line. To do this, use the
TSYS 1 and HOLD MC commands.
2. TS All (under SPV).
3. Verify that all information in the cache has been "destaged".
4. Switch the Directors to Disable status on the operator panel.
5. Set the AC POWER SWITCH on the Power Distribution Module to the down
position and wait for the cooling fans to stop.
6. In any circumstances, do not touch the EPO SWITCH.
7. Turn the battery OFF.
3.2.2 Emergency Power Down
In case of emergency power down:
1. Turn the EPO switch OFF. The AC power switch will drop automatically and
the cooling fans will stop after approximately 20 seconds.
2. Before powering up the CDA 7, call the Bull Competence Center.
CAUTION:
Restarting after an Emergency Power Down must be done only after contacting
the Bull Competence Center.