Font Density.................................................................................................................................................... 123
Font Sharpening.............................................................................................................................................. 123
Reduced Curl...................................................................................................................................................124
A5 Loading ......................................................................................................................................................124
USB Speed....................................................................................................................................................... 124
USB PnP ..........................................................................................................................................................124
Exit Config Menu.............................................................................................................................................124
Entering Invalid engine mode................................................................................................................125
Entering Recovery mode.......................................................................................................................125
Service engineer menu..........................................................................................................................125
Accessing the service engineer (SE) menu...................................................................................................... 125
Service engineer (SE) menu ............................................................................................................................125
Repair information...................................................................................127
Removal precautions.............................................................................................................................127
Data security notice ........................................................................................................................................ 127
Handling ESD‑sensitive parts ..........................................................................................................................127
RIP board/operator panel replacement..........................................................................................................128
Ribbon cable connectors ................................................................................................................................129
Zero Insertion Force (ZIF) connectors ........................................................................................................ 129
Horizontal top contact connector .............................................................................................................. 130
Horizontal bottom contact connector........................................................................................................133
Vertical mount contact connector ............................................................................................................. 136
Horizontal sliding contact connector ......................................................................................................... 139
Low Insertion Force (LIF) connector...........................................................................................................142
Printhead assembly adjustments....................................................................................................................143
Removal procedures.............................................................................................................................146
Left side removals.................................................................................................................................146
Left cover removal .......................................................................................................................................... 146
Main drive gearbox removal........................................................................................................................... 147
MPF solenoid removal .................................................................................................................................... 149
MPF gearbox removal.....................................................................................................................................151
Reverse solenoid removal...............................................................................................................................154
ACM clutch removal........................................................................................................................................155
Cartridge gearbox removal ............................................................................................................................. 160
Duplex gear assembly removal .......................................................................................................................160
Right side removals...............................................................................................................................162
Right cover removal........................................................................................................................................162
Cooling fan duct removal................................................................................................................................163
Cooling fan removal........................................................................................................................................ 163
Controller board removal ............................................................................................................................... 164
Toner cartridge smart chip contact removal ..................................................................................................165
Front removals......................................................................................................................................167
4514-420, -430
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