Lexmark W840 - Page 113

Diagnostic information 2-57
4024-XXX
6 Check the 2TM/TTM controller card assembly and the
printer engine card assembly for proper connection.
Are connectors P541 and P413 on the above cards
connected properly?
Go to step 7. Replace the
connection.
7 Check the tray 3 sensor (media level) for proper
operation.
1. Enter Diagnostics mode.
2. Select INPUT TRAY TESTS.
3. Select Sensor Tests.
4. Select Tray 3.
5. Select Media level.
Remove the media tray assembly, and move the pick
roll with your finger in an up and down motion. Avoid
touching the rubber roll surface.
Does the display on the operator panel change every
time the sensing area of the above sensor is blocked?
Go to step 9. Go to step 8.
8 Check the sensor (media level) for proper connection.
Is the above sensor connected properly?
Replace the sensor
(media level).
Go to “2000-sheet
dual input (TTM)—
sensor (media
level) removal” on
page 4-96.
Replace the
connection.
9 Check the switch (TTM media size) for proper
connection.
Is the above switch connected properly?
Replace the switch
(TTM media size).
Go to “2000-sheet
dual input (TTM)—
switch (TTM media
size) removal” on
page 4-84.
Replace the
connection.
10 Perform a print test.
Does the error still occur?
Replace the 2TM/
TTM controller card
assembly.
Go to “2000-sheet
dual input (TTM)—
2TM/TTM controller
card assembly
removal” on
page 4-116.
Go to step 11.
Problem solved.
11 Perform a print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Refer to the Printer
Service Manual.
Problem solved.
Step Check Yes No