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1. General information
The Oki™ MB780 and MB790 are All-In-One laser MFPs that provide print, copy, scan,
and fax functions designed to attach to most computer networks. The operator panel is touch-sensitive and
allows the user to adjust the viewing angle. All information in this service manual pertains to all models unless
explicitly noted.
Maintenance approach
The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the
service error codes, user status messages, user error messages, service checks, and diagnostic aids to
determine the MPF problem and repair the failure. After you complete the repair, perform tests as needed to
verify the repair. See
"Start" on page
2-1.
7462
1-1
General information
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