Lexmark T650DN Service Manual - Page 164
Replace the MPF, Select Duplex tests
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4062 Step Check Yes No 1 Check the media size setup and tray guides for all media trays. Go to step 2. Does the media size, in use, match the size set for all media trays? 2 Check the media trays for overfilling. Are any of the media trays overfilled? Remove any excess new media. 3 Check the media condition in all media trays. Replace the Is any of the media in any of the media trays crumpled or damaged? damaged media with new. 4 Check the media tray pass through areas for obstructions. Go to step 5. Are the pass through areas in all the media trays free from obstructions? 5 Check media origination. Go to step 6. Did the media originate from the MPF? 6 Check the MPF pick roll assembly. Go to step 7. Is the above component free of excess wear and contamination? 7 Perform a MPF print test and check the MPF pick solenoid Go to step 17. for proper operation. Does the above component operate properly? 8 Check media origination. Go to step 9 Did the media originate from the internal duplex? 9 Check the internal duplex media path for obstructions. Go to step 10 Is the above component free from obstructions? 10 Check the sensor (duplex input) for proper operation. Go to step 12. 1. Enter the diagnostic mode 2. Select Duplex tests 3. Select sensor test 4. Observe the line item "input" Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked. 11 Check the above sensor for proper connection. Is the above sensor connected properly? Replace the Sensor (duplex input). Go to "Sensor (duplex input) removal (T652, T654)" on page 4-68. Replace the media, or change the media size setup. Go to step 3 Go to step 4. Remove obstructions. Go to step 8. Clean or replace the MPF pick roll assembly. Go to "MPF pick roll assembly removal (T650, T652, T654)" on page 4-38. Replace the MPF pick solenoid. Go to "MPF pick solenoid assembly removal (T650, T652, T654)" on page 4-39. Go to step 13 Remove obstructions. Go to step 11. Replace the connection. 2-130 Service Manual