Lexmark T632 Service Manual - Page 118

4060-xxx Print quality-light print Service tip: Check the toner saver and print darkness settings first if the print is light. FRU 1 Transfer roll 2 Right side transfer roll arm assembly HVPS 3 Printhead Action Check the right end of the transfer roll shaft for signs of wear or contamination. If incorrect, replace the transfer roll. Check the right side transfer roll arm assembly bearing for wear or contamination. Also make sure the transfer cable is firmly attached to the bearing. If incorrect, replace the right side transfer arm assembly. Check the connection of the transfer roll assembly cable to the transformer on the HVPS board. Check the continuity of the cable from the bearing to the spade terminal on the cable. If incorrect, replace the right side transfer arm assembly. If correct, replace the HVPS. A contaminated printhead may be the cause of light print. If no other cause is found, install a new printhead. Print quality-toner on backside of printed page Service tip: This is generally caused by loose toner in the machine in the paper path being carried through the printer on the backside of the paper. FRU 1 Hot roll fuser assembly 2 Transfer roll transfer plate assembly Action Toner is being carried out on the backside of the media. This problem is generally caused by a toner buildup on the fuser hot roll or backup roll. Check the fuser hot roll and backup roll for any noticeable buildup of toner. Repair as necessary. Check the transfer roll for toner buildup or loose toner around the area of the transfer plate assembly. Clean the area and run another copy. If the problem continues, replace the FRUs in the following order: • HVPS • System board 2-84 Service Manual