Oki C911dn, Troubleshooting Manual, Page: 6 / 90

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Contents
Manual Configuration ........................................................................... 2
Reading the Manual ............................................................................. 3
Symbols ..................................................................................................................3
Keys, Buttons, and Symbols ....................................................................................3
Illustrations ............................................................................................................4
Screens ...................................................................................................................4
Inscriptions ............................................................................................................5
1 Troubleshooting ................................................................... 9
Troubleshooting solutions procedure ................................................. 10
Paper jams ........................................................................................ 11
Checking messages (if a paper jam occurs) ..........................................................11
Removing jammed paper ......................................................................................14
When a message related to paper appears ........................................ 31
When a message related to replacement of consumables appears ..... 33
When some other message appears ................................................... 35
Printing Troubles ............................................................................... 40
Unable to print .....................................................................................................40
Printer driver malfunctions ...................................................................................44
Print quality is poor ..............................................................................................47
Paper feed is poor ................................................................................................50
2 Maintenance ...................................................................... 51
Replacing consumables and maintenance unit ................................... 52
Consumables and maintenance unit service life ...................................................52
When the replacement period is approaching .......................................................53
Replacing toner cartridges ....................................................................................54
Replacing Image Drums .......................................................................................57
Replacing belt units and transfer roller units ........................................................60
Replacing fuser units ............................................................................................65
Replacing waste toner boxes ................................................................................67
Replacing paper feed rollers .................................................................................69
Maintenance of the device ................................................................. 77
Cleaning printer surfaces ......................................................................................77
Cleaning LED heads ..............................................................................................77
Cleaning feed rollers .............................................................................................83