Lexmark T640 Service Manual page 127

Operator panel displays
are put in the hopper OR the operator panel continues to display
envelopes are placed in the hopper
Service tip: The kick rolls rotate during the attempted feed cycles.
FRU
1 Envelope out hopper
sensor flag
990.xx Service Error, envelopes fail to feed from the hopper
FRU
1 DC feed motor assembly
displays, unable to clear and envelopes fail to feed from the
260.xx Paper Jam
hopper—Kick rolls are not rotating
FRU
1 Clutch latch assembly
displays, unable to clear and envelopes fail to feed from the hopper
260.xx Paper Jam
Kick rolls are rotating.
Check the deflector gap adjustment before continuing this service check.
FRU
1 Deflector gap adjustment
2 Weight assembly
3 Envelope edge guide
after attempted feed but before envelopes
260.xx Paper Jam
Action
Check the envelope out sensor flag for damage, correct installation
and operation.
If incorrect, repair or replace the envelope feeder option.
Action
Check the motor and motor cable for loose wires or poor
connections. Make sure the motor cable is connected to the envelope
system board.
If correct, replace the envelope feeder option.
Action
Check the clutch latch assembly to make sure it moves freely.
If correct, replace the envelope feeder option.
Action
Check the deflector gap adjustment. The adjustment may be too
narrow.
Check the weight assembly to make sure it moves up and down
freely without any binds. Make sure the weight assembly rests on all
the rear kick rollers when the hopper is empty. If the weight assembly
is damaged or does not operate properly, replace the envelope
feeder assembly.
Check the envelope edge guide to make sure it is not warped or set
too close to the envelopes in the hopper. If the edge guide is
damaged or does not operate properly, replace the envelope feeder
option.
4061-xx0
after
Load Envelopes
2-85
Diagnostic information