Lexmark C780 Service Manual - Page 87
Pick rolls, removal on, same time. See
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5061 Envelope feeder Before proceeding with this service check, make sure the envelope option is installed correctly. Step 1 2 3 4 Actions and questions Make sure the envelopes installed in the tray meet specifications. Some guidelines that can be used in selection of envelopes that will minimize the jam rate are: • Flat envelopes that are not warped or twisted. • Flexible envelopes that can conform to the paper path. • Smooth surface on the envelopes. Rough or ridged surfaces may cause the envelopes to stick together in the tray. • No cotton content, or as little as possible to meet the user's needs. • If the envelopes have a pressure-sensitive adhesive flap, performance might be improved by reversing the orientation of the envelope in the tray and reversing the image in the drive or application. Are any problems found with the envelopes? Make sure the envelopes are loaded correctly. Make sure the side and back restraints are located and seated properly. Are the envelopes loaded correctly? Observe if the envelopes feed from the tray. Note: You can observe the autocompensator pick rolls and the envelopes through the tray access door. Are the envelopes leaving the tray? Check the pick rolls to verify both pick rolls are installed. Are any of the pick rolls missing? 5 Check to make sure the autocompensator pick rolls are correctly installed. Are the autocompensator pick rolls correctly installed? 6 Observe the pick rolls as they try to pick and feed envelopes from the tray. Do the pick rolls turn? 7 Check the autocompensator pick rolls for signs of wear or contamination. Are the pick rolls worn or contaminated? 8 If you continue to have problems, replace the complete envelope option. Yes Inform the customer of the problems with the envelopes that do not meet specifications. Go to step 3 Go to step 8 Go to step 5 Go to step 6 Go to step 7 Replace the pick rolls. Both pick rolls should be replaced at the same time. See "Pick rolls removal" on page 4-70. No Go to step 2 Load the envelopes correctly. Go to step 4 Install a new pair of pick rolls. Both pick rolls should be installed at the same time. See "Pick rolls removal" on page 4-70. Install the pick rolls correctly. See "Pick rolls removal" on page 4-70. Replace the envelope option. Go to step 8 Diagnostic information 2-45