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Replacement Instruction,
How to install the
PROM
Figure 3
Printed Wiring Board Identification
11/99
Continued
Follow the procedure in Table 3 to access the PROM.
Table 3
Access the PROM
Step
1
Remove the four screws (two on each side) that hold the two main
printed wiring boards onto the chassis (See Figure 2 for location)
Use pliers to squeeze the ends of the spacer and push it through
2
the Power/ Digital I/O PWB. (See Figure 2 for location of spacer)
Gently pull the MCU/Inputs and the Power/DIO boards apart out of
3
the top and bottom interconnectors and lay the boards flat on a
non-conductive surface. (See figure 3).
4
Identify the Communications Option board (If present) and remove
the two screws that hold it onto the MCU/Inputs PWB.
5
Figure 3 identifies the location of the PROM.
6
Insert a small screwdriver under the PROM and lift up to remove.
Orient the PROM to the socket and press into place.
7
Reassemble the Communications Option PWB to the MCU/Inputs
8
PWB.
Reassemble the interconnects to the MCU/Inputs board and
9
reassemble the boards reversing the procedure above.
Reattach the Bezel/Keyboard/Display board assembly as listed in
10
Table 2 - steps 4 and 5.
11
Return the chassis to the case and configure the controller to
include the new features.
MCU/Inputs
Board
Communications
Option Board
Pin 1
PROM Location
Kit Instruction 51-52-33-85C
Action
W1
Option
Input Board
J14
P14
W1
Power / DIO Board
23046
5 of 5
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