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B Optional memory 43
Memory board......................................................................................................43
Installing extra memory .................................................................................43
C Troubleshooting and routine maintenance 45
Troubleshooting...................................................................................................45
Solutions to common problems .....................................................................45
Improving the print quality .............................................................................51
Error and maintenance messages.......................................................................62
Document jams..............................................................................................66
Paper jams ....................................................................................................67
Routine maintenance...........................................................................................76
Cleaning the outside of the machine .............................................................77
Cleaning the scanner.....................................................................................77
Cleaning the laser scanner windows .............................................................78
Cleaning the corona wires .............................................................................82
Cleaning the drum unit ..................................................................................86
Replacing the consumable items.........................................................................94
Replacing a toner cartridge ...........................................................................96
Replacing the drum unit...............................................................................101
Replacing the belt unit.................................................................................108
Replacing the waste toner box ....................................................................113
How to change the LCD language...............................................................118
Packing and shipping the machine....................................................................119
Repacking the machine...............................................................................120
Machine information ..........................................................................................126
Checking the serial number.........................................................................126
Checking the page counters........................................................................126
Checking the remaining life of parts ............................................................127
D Menu and features 128
On-screen programming....................................................................................128
Menu table...................................................................................................128
Memory storage...........................................................................................128
Menu keys .........................................................................................................128
How to access the menu mode ...................................................................129
Menu table.........................................................................................................130
Entering text ......................................................................................................135