United Security Products AVD-45c Manual Pagina 290

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276 UDC 6300 Process Controller Product Manual 1/03
8.8 Parts Replacement Procedures, Continued
How to replace the
option Input board
To replace the Option Input Board, refer to Figure 8-5 for parts location
and follow the procedure in Table 8-20.
Table 8-20 Option Input Board Replacement Procedure
Step Action
1
Remove the chassis from the case. (See Table 8-14).
2
Remove the Bezel/Keyboard and Display board (See Table 8-15).
3
Access the Printed Wiring Boards (See Table 8-16)
4
Identify the Option Input board . The board is attached to the
Power/DIO board by mounting posts.
5
Use small pliers and squeeze the ends of each posts together and
push it through the board.
6
Assemble the new Option Input PWB to the Power/DIO PWB.
ATTENTION
If you are using the Low Level Option Input
board,
Part Number 30756715-501, make sure that the W1 jumper on
both the Option Input board and on the Power/DIO board are
removed (See Figure 8-5).
For the Pulse Option Input board, Part Number 51309184-501,
DO NOT remove the W1 jumper.
7
Assemble the interconnects to the MCU/Inputs board and
reassemble the boards reversing the procedure in Table 8-16
8
Reattach the Bezel/Keyboard and Display board.
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