200.28, And 200.29 Paper Jam Service Check; Paper Jam Service Check - Lexmark C77x Service Manual

200.21, 200.28, and 200.29 paper jam service check

Either the laser paper path, S2,or narrow media sensor is obstructed.
Note: See "Printer sensors" on page
Step Actions and questions
1 Is sensor flag obstructed by paper debris, out of
position, or broken?
2
Perform the
Do both sensor pass the test?
3
Is the inner deflector out of place, causing sensor flag
to bind?
4 Are the sensors connectors fully seated?
5 Are connectors at J21 fully seated on the system
board?
6 Check sensor cables.
Are the cables cut or broken?
7 Replace the sensor that did not pass the test.
Is the problem resolved?

200.93 paper jam service check

The laser was made unexpectedly.
Step Actions and questions
1 Remove fuser from printer, remove oiler housing from
fuser, and pivot the paper guide up.
Is paper jammed inside the fuser?
2
Check fuser entry guide for toner buildup.
Is toner built up on the fuser entry guide?
3 Check fuser exit sensor flag.
Does the flag rotate freely and return to normal position
when released?
5-3.
"BASE SENSOR TEST" on page
Yes
Clear the
obstruction and
reinstall or
replace flag.
3-24. Problem resolved
Install inner
deflector
properly.
Go to step 5
Go to step 6
Replace the
cables.
Yes
Clear the jam.
Replace the fuser
assembly. See
"Fuser
assembly
removal" on
page A-44.
Go to step 4
Diagnostic information
5061
No
Go to step 2
Go to step 3
Go to step 4
Reseat the
sensor
connector.
Reseat the
connector on the
system board.
Go to step 7
Replace the
system board.
See "System
board removal"
on page 4-89.
No
Go to step 2
Go to step 3
Replace the fuser
assembly. See
"Fuser
assembly
removal" on
page A-44.
2-31