Section 7: Replacement Procedures
4Remove two screws (3) securing interface board (4) to printer housing.
5Withdraw interface board (4) from its connection with main circuit board (1).
6Remove three screws (5) securing daughter board (2) to main circuit board (1).
7Withdraw daughter board (2) from its connection with main circuit board (1).
8Detach optional memory card (6) from its connection with main circuit board (1).
9Remove two exterior screws (7) securing main circuit board (1) to the housing.
10Remove three interior screws (8) securing main circuit board (1) to the printer frame.
11 Withdraw main circuit board (1) from within the printer.
12Prepare to replace main circuit board (1).
13Install main circuit board (1) into mounting position and secure to the printer frame using three screws (8).
14Secure the exterior of main circuit board (1) using two screws (7).
15Connect optional memory card (6) to main circuit board (1) as applicable.
16Connect and attach daughter board (2) to main circuit board (1) using three screws (5).
17Connect interface board (4) to main circuit board (1) and secure to housing using two screws (3).
18Reconnect all wiring harnesses (Figure
19Reconnect power supply cord, test cycle, and reattach housing covers.
C
C 
E
D
F
B G
A
D 
E
G
F
Figure 7-2, Circuit Board Replacement
M84Pro Service Manual | PN 9001111A | Page |
