Lexmark C720 Service Manual page 111

5024-001
Message
231 Paper Jam
Duplex Low
Door
24x Paper Jam
Check Tray x
To locate
For details see...
the jam...
Open the 231 check the duplex lower paper
duplex unit sensor (PT4) and actuator. Ensure
lower door connector CN6 on the duplex relay
P.W.B. Board is plugged in.
Replace the duplex relay P.W.B. board
if necessary. If the paper jam still
exists, go to
Service Check" on page
Note: Clear all paper from the paper
path.
Open the 24x paper jam around (tray 1 or 2)
paper tray
Notes:
"Duplex Paper Feed
– If the tray is difficult to remove,
remove the tray above or
below trays to remove jammed
pages.
– Ensure no paper is jammed at
the pickup roll.
– If clearing paper doesn't
resolve the problem and you
have a 241 error, go to
Feed Service Checks" on
page 2-77. If you have a 242
error, go to "Lower Feed Unit
Paper Feed Service Check"
on page 2-79.
CAUTION: The inside of the
printer may be hot. Allow the
printer to cool before touching any
internal components.
Diagnostic Information
2-81.
"Paper
2-31