Ricoh M080 Service Manual page 186

Printer Controller Service Mode
bit 5 DFU
bit 6 DFU
bit 7 DFU
1003 Clear Setting
1004 Print summary
1005 Disp Version
M080
Initializes settings in the "System" menu of the user mode.
Prints the service summary sheet (a summary of all the controller
settings).
Displays the version of the controller firmware.
3-8
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- -
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SM Appendix