Service Checks Flowchart; How To Use The Service Checks Flowchart; How To Follow A Service Check - Lexmark W820 Service Manual

Attendance Message
Close Door A
Close Door B

Service Checks Flowchart

How to Use the Service Checks Flowchart

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How to Follow a Service Check

1.
2.
3.
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7.
8.
See the sample service check below.
Step Actions and Questions
1 NO PAPER SENSOR TEST
1. Enter Diagnostics and test Tray 3 No Paper
Sensor.
2. Slide Tray 3 out of the printer.
3. Manually actuate and deactuate Tray 3 No Paper
Sensor.
Does the last number in the Diagnostics
Status Window toggle between OP and
CL?
4025-XXX
Follow your problem to the individual Primary Service Check that corresponds to
your error code, printer operation problem, or print image problem.
Follow the instructions presented in the Service Check.
Voltage and resistance values presented in the Service Checks are an
approximation. Actual readings may vary from the stated values.
Primary Service Checks may direct you to a Secondary Service Check.
Each numbered step in a service check instructs you to perform a certain action or
procedure.
The Actions and Questions box may contain additional information and numbered
procedure steps you must follow to perform the action.
The action is followed by a question.
If your response to the question is Yes, then follow the instructions for a Yes reply.
If your response to the question is No, then follow the instructions for a No reply.
Service Checks may ask you to take voltage readings at certain test points within the
printer.
Service Checks may ask you to run a specific diagnostic routine in order to test a
FRU or circuit.
Service Checks often ask you to replace a printer FRU. Removal and Replacement
Procedures provide you detailed steps for removing and replacing major parts of the
printer.
Action
Go to "Attendance Message - Close Door
A" on page 2-52.
Go to "Attendance Message - Close Door
B" on page 2-53.
Yes
Go to step 2
Diagnostic Information
No
Replace the No Paper
Sensor. Go to "Tray 1
& 2 No Paper
Sensors" on
page 4-31
2-9