
1/03 UDC 6300 Process Controller Product Manual 275
8.8 Parts Replacement Procedures, Continued
How to replace the
Power/DIO printed
wiring board
To replace the Power/DIO printed wiring board
(Part Number 51309179-002), follow the procedure listed in Table 8-19
and refer to Figure 8-5 for parts location.
Table 8-19 Digital I/O PWB 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 Power/DIO PWB and remove the Option Input board if
present (see Table 8-20).
5
Replace U109 PROM on the MCU/Inputs board with the new
PROM from the kit.
6
Reassemble the Option Input PWB to the Digital I/O-Power PWB if
present.
7
Assemble the interconnects to the new MCU/Inputs board and
reassemble the boards reversing the procedure in table 8-16
8
Reattach the Bezel/Keyboard and Display board.
Continued on next page
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