Lexmark 4079 colorjet printer plus Service Manual - Page 57

encoder/paper, operation.

Page 57 highlights

Paper Feed Electrical 010 (continued) Is the surface uniformly black and in good condition? Yes No 011 Replace the platen. 012 Replace the linear encoder/paper width sensor and check the printer operation. If the problem is not corrected, go to the beginning of this MAP. 013 Clean the platen with a wet paper towel. 014 Is the paper picked up and fed correctly? Yes No 015] Check for correct paper being used. -- Clean the paper feed rollers and remove any foreign objects from the paper path. If the paper feed rollers do not turn and the motor does rot run, go to "MAP 0280: Paper Feed Motor" on page 2-60. 016 - Remove and replace the following FRUs in sequence, checking the printer operation after each replacement: 1. Linear encoder (Asm. 9-2) 2. Logic board. 0171 (Step 017 continues) Diagnostic Information 2-37

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Paper
Feed
Electrical
010
(continued)
Is
the
surface
uniformly
black
and
in
good
condition?
Yes
No
011
Replace
the
platen.
012
Replace
the
linear
encoder/paper
width
sensor
and
check
the
printer
operation.
If
the
problem
is
not
corrected,
go
to
the
beginning
of
this
MAP.
013
Clean
the
platen
with
a
wet
paper
towel.
014
Is
the
paper
picked
up
and
fed
correctly?
Yes
No
015]
Check
for
correct
paper
being
used.
--
Clean
the
paper
feed
rollers
and
remove
any
foreign
objects
from
the
paper
path.
If
the
paper
feed
rollers
do
not
turn
and
the
motor
does
rot
run,
go
to
"MAP
0280:
Paper
Feed
Motor"
on
page
2-60.
016
-
Remove
and
replace
the
following
FRUs
in
sequence,
checking
the
printer
operation
after
each
replacement:
1.
Linear
encoder
(Asm.
9-2)
2.
Logic
board.
0171
(Step
017
continues)
Diagnostic
Information
2-37