Chapter 13 275
Assembly Replacement Procedures
Front Frame Assembly
Daughter Board, Interface Board and Keypad
Removal
1. Refer to Figure 13-33. Remove the RPG knob (17) by carefully pulling it off.
2. Remove the display. Refer to the Display Assembly removal procedure.
3. Refer to Figure 13-32. Remove the A1A5 Front Panel Daughter board (14) by
removing the three screws (28) and unplugging it from the front panel
interface board.
4. Remove the thirteen screws (31) securing the A1A2 Front Panel Interface
board to the Front Frame Assembly. The Front Panel Interface board with the
keypad attached can now be lifted from the Front Frame Assembly.
5. To separate the keypad from the Front Panel Interface board, use a push tool or
pliers to carefully separate the pull through tabs.
Replacement
1. Install the keypad onto the Front Panel Interface board using the pull through
tabs and alignment holes. Use a push tool or pliers to ensure that all of the pull
through tabs are properly captive on the board.
2. Install the A1A2 Front Panel Interface board/keypad assembly into the Front
Frame Assembly, and replace the thirteen screws (31) to secure. Torque to
9 inch pounds.
3. Replace the A1A5 Front Panel Daughter board (1 4) by plugging it into the
Front Panel Interface board using the board to board connectors and secure it
with the three screws (28). Torque to 9 inch pounds.
4. Replace the display. Refer to the Display Assembly replacement procedure.
5. Replace the RPG knob by firmly pressing it on.
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