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DFX-8500
Rev. B
5-2
6
Table 5-7. Printer Mechanism Repair 4/4
Symptom Cause Checkpoint Solution
Printing occurs
outside the paper
width.
The PW sensor is
defective.
Check the PW sensor. Replace the PW
sensor.
The paper bail
assembly does
not work.
The plunger is
defective.
Check the coil resistance of the
plunger. (It should be about 9 ohms.)
Replace the plunger.
Continuous paper
becomes
crumpled at the
front or rear
tractor assembly.
The tension value of
the tractor wire spring
is incorrect.
The distance between the frame and
the seal securing the white line should
be about 3 mm (0.12 inches).
Perform the tractor
wire spring tension
adjustment, as
described in Section
4.1.3.
The tractor select
(front or rear)
function is not
working.
The tractor select
sensor is defective.
Check the continuity of the tractor
select sensor.
Replace the tractor
select sensor.
The tractor select
gear is disconnected
from the tractor select
cam.
Visually check the tractor select gear
holder.
Join the tip of the
tractor select lever to
the tractor select
gear holder.