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[Replacement procedures]
1)
Turn off the controller main power.
2)
Remove the cover from the body.
3)
Remove all connectors in the control panel, which are linked to the X8HC
printed board.
4)
Remove the X8HC and X8HN (X8HI) printed boards from the body.
5)
Remove the ICs shown above from respective sockets.
6)
Attach new ICs to the sockets.
7)
Mount the X8HC and X8HN (X8HI) printed boards on the body.
8)
Link the removed connectors to the X8HC printed board, and set the main
cover.
9)
Turn on the controller main power.
– 3–15 –
MAINTENANCE MANUAL
STE 73872
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