Lexmark X644E Service Manual - Page 176

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 Printer printing-media over sensor(s), non-narrow media fed through the printer Printer printing-narrow media fed through the printer Exit sensor closed Narrow media sensor closed Exit sensor closed 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 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 "Fuser exit sensor removal" on page 4-82. 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 "Fuser assembly removal" on page 4-79. • System board. See "System board and inner shield removal -models X644e/X646e" on page 4-131. 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. 2-138 Service Manual