
iv
C Troubleshooting and routine maintenance 43
Troubleshooting ...................................................................................................43
If you are having difficulty with your machine ................................................43
Improving the print quality .............................................................................48
Error and maintenance messages.......................................................................55
Document jams..............................................................................................60
Paper jams ....................................................................................................61
Routine maintenance...........................................................................................66
Cleaning the outside of the machine .............................................................66
Cleaning the scanner glass ...........................................................................67
Cleaning the LED heads................................................................................68
Cleaning the corona wires .............................................................................69
Cleaning the drum unit ..................................................................................70
Cleaning the paper pick-up rollers ................................................................. 75
Calibration .....................................................................................................75
Auto Registration ...........................................................................................76
Manual Registration.......................................................................................76
Replacing the consumable items.........................................................................77
Replacing a Toner cartridge ..........................................................................79
Drum units .....................................................................................................84
Replacing the belt unit ...................................................................................89
Replacing the waste toner box ......................................................................93
Replacing periodic maintenance parts.................................................................98
Machine Information ............................................................................................98
Checking the Serial Number..........................................................................98
Checking the Page Counters.........................................................................98
User Settings List ..........................................................................................98
Network Configuration List ............................................................................99
Checking the remaining life of parts ..............................................................99
Reset functions..............................................................................................99
How to reset the machine ............................................................................100
Packing and shipping the machine....................................................................100
D Menu and features 105
On-screen programming....................................................................................105
Menu table...................................................................................................105
Memory storage...........................................................................................105
Menu keys .........................................................................................................105
How to access the menu mode ...................................................................106
Menu table .........................................................................................................107
Entering text.......................................................................................................112