Specifications

Hardware Description of LCN Node Processors – Node Processor Related Board Replacement
36 Application ModuleX Service 12/01
Honeywell
3.5 Node Processor Related Board Replacement
Overview
Node power must be turned off for the purpose of changing circuit
boards in the A
X
M node.
WARNING
Damage can result—Circuit board damage can result if you
do not practice proper ESD procedures or attempt to remove/
insert a circuit board with node power applied.
CAUTION
Mandatory steps—It is mandatory that appropriate software
shutdown procedures are followed for the A
X
M coprocessor
prior to removing power from the node.
Failure to do so can cause damage to the HP-UX file structure
on the coprocessor hard disk.
ATTENTION
It is also highly recommended that you perform a node
processor software shutdown when preparing to power off the
A
X
M node. This provides for an orderly departure from the
LCN network.
Locating
shutdown
procedure
Software shutdown procedures for the A
X
M coprocessor are documented
in Section 3 of the Application Module
X
System Administration manual.
Reference >> Application Module
X
System Administration manual
(Section 3.5).
Board Removal/ Replacement Procedure
Table 3-7 Board Replacement Procedure
Step Action
1
Turn off power using the switch on the node power supply.
2
Remove the board .
3
Verify that the replacement board pinning matches the existing board.
4
Insert the replacement board .
5
The node is now ready for power on and loading.
6
Perform the node loading procedures. Reference: >> A
X
M System
Administration manual (Section 3).