Lexmark X644E Service Manual - Page 165

7002-xxx FRU 10 System board Scanner control card Interface card Duplex option service check Duplex paper jams Action Replace the following FRUs in the order shown one at a time in until the problem is fixed: • Scanner control card. See "Scanner control card removal" on page 4-48. • System board. See "System board and inner shield removal -models X644e/X646e" on page 4-131. • Interface card. See "Interface card assembly removal" on page 4-107. 23x.xx jam code 231.xx 232.xx 233.xx 234.xx 235.xx 236.xx 237.xx 238.xx r Jam location Media did not arrive at the duplex input sensor, but did leave the fuser exit sensor. Media did not clear the duplex input sensor, but did leave the printer fuser exit sensor. Media failed to make the duplex double feed sensor during turnaround. Media did not arrive at the duplex exit sensor. A piece of media is over the duplex double feed sensor. Media did not leave the duplex exit sensor. A duplexed sheet did not reach the printer input sensor. A piece of media is over the duplex sensors during a reset. Duplex does not recognize that the option is installed, or other options below the duplex are installed FRU 1 Autoconnect cables/ connections Action Check the top and bottom autoconnect connectors for signs of damage. If damaged, replace the duplex option. If not damaged, check the cables are correctly connected to the duplex system board at J9, J10, J11, and J12. If no problem is found, replace the duplex option. Note: Before proceeding with the following service checks, verify the media used in the duplex option meets specification and is not dog-eared or damaged in any way. See "Media specifications" on page 1-9. Diagnostic information 2-127