Lexmark 4059-XXX - Manual (Page 129)

Diagnostic Information 2-102
4059-XXX
Print Quality - Toner on backside of printed page
Service Tip: This is generally caused by loose toner in the machine
in the paper path being carried through the printer on the backside of
the paper.
Smart Cartridge Service Check
Note: If you are unable to clear a “32-Unsupported Cartridge” User
Error Message, make sure an Optra Se print cartridge is correctly
installed in the printer. The cartridge is easily identified by the smart
chip located on the top right side of the cartridge. Install another
Optra Se cartridge before attempting to troubleshoot the printer.
Check to make sure the smart cable is properly connected to J21 on
the engine board. Check the print cartridge for any signs of damage
or improper installation of the smart chip. Also check to make sure
there is proper contact between the smart chip and the smart
cartridge contacts.
FRU Action
1 Fuser Assembly Toner is being carried out on the
backside of the media. This problem
is generally caused by a toner
buildup on the fuser hotroll or backup
roll. Check the fuser hotroll and
backup roll for any noticeable
buildup of toner. Repair as
necessary.
2 Transfer Roll Transfer Plate
Assembly Check the transfer roll for any signs
of toner buildup or loose toner
around the area of the transfer plate
assembly. Clean the area and run
another copy. If the problem
continues, replace the FRUs in the
following order:
HVPS
engine board