Epson DFX-8500 Service Manual page 200

DFX-8500
Symptom
Printing occurs
The PW sensor is
outside the paper defective.
width.
The paper bail The plunger is
assembly does defective.
not work.
Continuous paper The tension value of
becomes the tractor wire spring
crumpled at the is incorrect.
front or rear
tractor assembly.
The tractor select The tractor select
(front or rear) sensor is defective.
function is not
working.
The tractor select
gear is disconnected
from the tractor select
cam.
5-26
Table 5-7. Printer Mechanism Repair 4/4
Cause
Check the PW sensor.
Check the coil resistance of the
plunger. (It should be about 9 ohms.)
The distance between the frame and
the seal securing the white line should
be about 3 mm (0.12 inches).
Check the continuity of the tractor
select sensor.
Visually check the tractor select gear
holder.
Checkpoint Solution
Replace the PW
sensor.
Replace the plunger.
Perform the tractor
wire spring tension
adjustment, as
described in Section
4.1.3.
Replace the tractor
select sensor.
Join the tip of the
tractor select lever to
the tractor select
gear holder.
Rev. B