Lexmark C950 Service Manual - Page 348

5058-030 the possibility of the fuser pressure roll receiving flat spots that can result in abnormal thumping noises and possible print quality issues. Service tips • If the fuser belt or rollers are damaged, they can cause toner to be pulled off the page or cause paper jams. • Toner that does not properly adhere to a printed page can be a sign of a malfunctioning fuser or an improper media setting. Always check the paper type setting before replacing the fuser. A common mistake is to print on heavier media (such as cardstock) with the paper type set to plain paper. Paper path theory SFP paper path For an image to be printed, the media has to be moved from an input source (such as a tray) into the printer and eventually exit into an output source. The most important component in this process is the media. Old, damaged, or out-of-specification media can and will cause feed and transport problems. If problems are encountered, then the media should always be checked first. See "Media input size specifications" on page 1-7 and "Media input type specifications" on page 1-9. In addition, it is always a good practice to check the printer and driver settings to see if the media being used matches the user's settings. It is not uncommon to find a user printing on cardstock with the printer programmed to print on a plain paper setting. The printer's feed and transport components can fail and cause paper jams or other feed and transport problems. These components should be examined for damage or wear, and replaced if necessary. SFP paper path rolls Previous Next Go Back Duplex media transport roll assembly MPF transport roll MPF feed roll MPF pick roll MPF separation roll Tray module transport roll assembly Redrive roll fuser 2nd transfer roll assembly Registration roll assembly Tray 1 transport roll assembly Feed roll Pick roll Separation roll Feed roll Pick roll Separation roll Feed roll Pick roll Separation roll Pick roll Feed roll Separation roll TRAY 1 TRAY 2 TRAY 3 TRAY 4 3-60 Service Manual