Hi im getting error message on lcd "print unable

This
problem is often caused by the shutter door
sticking in the open position. The solenoid that
pulls the door open has a foam pad affixed to
absorb the shock when the door opens. Over time
this pad gets sticky - possibly due to toner
spills. Some remove the pad, I covered mine with
scotch tape. That way the cushion remains but the
door no longer sticks. You can test it by pulling
out the belt assembly. Look inside to the left and
you'll see the black plastic door, about 1/2" high
and 1.25" wide. Lift it from the bottom to get to
the sensor (which may need cleaning - I used a
damp cloth). It you can get the door to stick
open, then it's likely you found the problem. It's
no big deal to disassemble it from the rear. Just
take out the solenoid and cover it with about 1/2"
by 1/2" of tape. Reassemble the solenoid in such a
way that it pinches the tape so as to keep it from
coming off (the stickup on that tape isn't very
strong). The door should no longer be able to
remain stuck in the open position. If that doesn't
do it you probably have a bad board or solenoid.
I'll bet this is the problem 90% of the time. This problem is often caused by the shutter door sticking in the open position. The solenoid that pulls the door open has a foam pad affixed to absorb the shock when the door opens. Over time this pad gets sticky - possibly due to toner spills. Some remove the pad, I covered mine with scotch tape. That way the cushion remains but the door no longer sticks. You can test it by pulling out the belt assembly. Look inside to the left and you'll see the black plastic door, about 1/2" high and 1.25" wide. Lift it from the bottom to get to the sensor (which may need cleaning - I used a damp cloth). It you can get the door to stick open, then it's likely you found the problem. It's no big deal to disassemble it from the rear. Just take out the solenoid and cover it with about 1/2" by 1/2" of tape. Reassemble the solenoid in such a way that it pinches the tape so as to keep it from coming off (the stickup on that tape isn't very strong). The door should no longer be able to remain stuck in the open position. If that doesn't do it you probably have a bad board or solenoid. I'll bet this is the problem 90% of the time.