Fuser Exit Sensor Service Check - Lexmark X642e Service Manual

7002-xxx

Fuser exit sensor service check

If any of the following codes are displayed, there is a potential problem in the area of the exit sensor: 201.00,
201.02, 201.10, 201.12, 201.22, 201.30, 201.32, 201.40, 201.41, 201.42, 201.50, 201.52, 201.92, 202.00,
202.02, 202.04, 202.10, 202.11, 202.12, 202.14, 202.20, 202.21, 202,22, 202.24. 202.30, 202.31, 202.32,
202.34, 202.40, 202.41, 202.42, 202.44, 202,50, 202.51, 202.52, 202.54, 202.90, 202.91, 202.92, and 202.94.
Fuser exit and fuser narrow media sensor status chart
Printer not printing— no media
over sensors
Exit sensor open
Narrow media sensor open
FRU
1 Fuser exit sensor (exit
sensor test)
2 Fuser exit sensor cable
3
Fuser exit sensor flag
4 Fuser assembly
Fuser exit sensor cable
Fuser board
Fuser to system board
cable
System board
5
2-138
Service Manual
Printer printing—media over
sensor(s), non-narrow media fed
through the printer
Exit sensor closed
Narrow media sensor closed
Action
Enter the Diagnostic mode, select BASE SENSOR TEST, select the
Exit Sensor to test for proper operation. If the exit sensor fails the
test, go to step 2. If the exit sensor passes, go to step 5.
Check the fuser exit sensor cable for correct installation or for any
signs of damage to the cable or connectors. If no problem is found,
go to step 3. If a problem with the installation is found, install the
cable correctly. If damage to the cable or connectors is found, replace
the cable.
Make sure the sensor flag is not binding and is operating properly. If
the sensor is operating properly, go to step 4. If it is not operating
properly, repair or replace the sensor assembly. See
sensor removal" on page
Check the continuity of the fuser exit sensor cable. If incorrect,
replace the cable; if correct check the continuity of the fuser to
system board cable. If incorrect, replace the cable; in correct, replace
the following FRUs in the order shown:
• Fuser board.
• Fuser assembly. See
• System board. See "System board and inner shield removal
—models X644e/X646e" on page
With the redrive assembly removed from the printer, enter the
Diagnostics mode and run the print test from tray 1 (for example,
select PRINT TESTS, Tray 1, and Continuous) and observe the
media as it passes over the exit and narrow media sensors. Check
that the sensor flags are operating correctly. If the sensor flags and
hardware are operating incorrectly, repair or replace the failing
sensor assembly. If no problem is found, check the fuser for any signs
of media in the fuser or any signs of toner or other contamination. If a
problem is found, clean or remove the debris or contamination.
Printer printing—narrow media
fed through the printer
Exit sensor closed
Narrow media sensor open
4-82.
"Fuser assembly removal" on page
4-131.
"Fuser exit
4-79.