Lexmark T640 - Paper Size Sensing Service Check

Diagnostic information 2-113
4061-xx0
Paper fails to feed from the multipurpose tray
The pick roll should make one complete revolution and stop with the flat side down. If the pick roll turns but
does not pick paper, check the roll for signs of wear, oil or grease on the surface of the pick roll or slick
spots. If you find a problem, replace the pick roll assembly. Check to ensure the media that is being fed
through the multipurpose tray assembly meets recommended paper specifications.
Paper size sensing service check
Before proceeding, check for the correct paper size loaded in the tray and that the tray has been set to accept
the size paper loaded in the tray.
Paper size sensing switch chart
ITC
CN1 pin
Signal
ITC
switch
Paper tray size selection (X is activated) System
board
J34 pin
Letter Legal A4 Exec B5 A5
1 PSIZE2 SW1 X X X 1
2 Ground Ground 2
3 PSIZE1 SW0 X X X 3
4 PSIZE3 SW2 X X X 4
CN1
1
SW1
SW0
SW2