Lexmark W820 Service Manual page 128

Error Code 200
There is a paper jam at the Registration Sensor.
Logic Control on the MCU PWB sensed the Registration Sensor was not actuated within
the specified time since paper feed.
Step Actions and Questions
1 PAPER PATH INSPECTION
Inspect the paper path for paper scraps that may cause a
paper jam.
Is the paper path free of paper scraps?
2 PAPER INSPECTION
Inspect the paper loaded in the paper cassette.
Is the paper wrinkled or damaged?
3 PAPER SIZE INSPECTION
Inspect the cassette paper guides.
Are the guides set to the size of paper loaded in the
cassette?
4 PAPER TRAVEL INSPECTION
Open the Left Upper Cover and observe the position of the
jammed paper.
Is the sheet of paper skewed?
5 REGISTRATION SENSOR TEST
Enter Diagnostic Mode and select Sensor Test- Registration
Sensor.
Open the Left Upper Cover and insert, then remove, a sheet of
paper into the Registration Sensor.
Does the Operator Panel LCD change between OP and CL
as you insert then remove the paper?
6 MCU PWB REPLACEMENT
Replace the
Does the error code appear?
7 The following printer FRUs and areas are associated with this
specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using the steps in this Service Check, replace each
FRU or troubleshoot each area listed below, one at a time, until
you isolate and solve the problem.
• Wiring and connectors linking the FRUs
• I/O PWB - Go to
2-32
Service Manual
"Engine Board (MCU PWB)" on page 4-92
"I/O PWB" on page
4025-XXX
4-89.
Yes No
Go to step 2 Clear the
paper path
Replace with Go to step 3
new paper
Go to step 4 Adjust the
guides
Replace the Go to step 5
"Feeder,
Nudger, and
Retard Rolls"
on page 4-17
Go to step 6 Replace the
"Registration
Sensor" on
page 4-56
Go to step 7 Problem
solved