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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Routine Maintenance Procedures
Page 5-10Replacing Components (Release 5vs or Later)
5
8. Reseat the port circuit packs one at a time following the same steps
outlined above for control circuit packs.
9. If none of the control or port circuit packs appears to be defective, replace
the power unit.
10. When the system reboot has completed, return the EMER XFER
(Emergency Transfer) switch to AUTO. This restores the system to the
normal operating mode.
Replacing Components (Release 5vs
or Later)
Components within the Release 5vs can be replaced while the unit is attached to
the wall. Also, if the wires and cables at the back of the cabinet are neatly
bundled, these wires and cables need not be disconnected.
Figure 5-1
and Figure 5-2 provide views of the power supply sub-assembly.
Figure 5-3
provides a view of the fan sub-assembly. The sections following the
figures discuss how to disassemble the unit and then replace the power supply
or fans within the unit.
!
CAUTION:
When replacing either the power supply or the fans within a Release 5vs
unit that is already attached to the wall, you should disconnect the entire fan
panel from the unit. Otherwise, if the fan panel is left to dangle, the cable
assemblies leading out from the fans (which are connected to the fan
panel) and into the backplane might become damaged or disconnected
from the backplane.