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Section 7: Replacement Procedures
M84Pro Service Manual PN 9001111A Page 7-4
DAUGHTER BOARD REPLACEMENT
1 Switch off the printer and disconnect the power supply cord.
2 Open/remove thetop, right, and left housing covers.
3 Disconnect the print head wiring harness (1, Figure 7-4) from daughter board (2).
4 Remove the three screws (3) securing daughter board (2) to main circuit board (4).
5 Disconnect daughter board (2) from main circuit board (4).
6 Connect replacement daughter board (2) to main circuit board (4) and secure using three
screws (3).
7 Reconnect power supply cord, test cycle, and reattach housing covers.
Figure 7-4, Daughter Board Replacement
NOTE: Figure 10-1 of the Daigrams & Schematics section provides guidance
on housing cover removal.
NOTE: Figure 10-1 of the Daigrams & Schematics section provides guidance
on housing cover installation.
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