Canon MF6590 imageCLASS MF6500 Series Basic Operation Guide - Page 249

ADJUST./CLEANING Setting Item 1. TRANS. ROLR CLEAN 2. FIX.UNIT CLEANING 3. FEEDER CLEANING 4. SPECIAL MODE M MID LOW HIGH 5. SPECIAL MODE N 6. SPECIAL MODE O 7. SPECIAL MODE P Description Cleans the transcription roller. (See "Transcription Roller," on p. 10-11.) Cleans the fuser roller. (See "Fuser Roller," on p. 10-6.) Cleans the ADF. (See "Cleaning the ADF Automatically," on p. 10-10.) Sets to improve print quality or fix irregular print density. If print quality decreases or an irregularity in the print density appears, transcription output may not function adequately. Selects in normal conditions. Selects to compensate for poor print quality that occurs when using paper that was stored for a long time at high temperatures and high humidity. Selects to compensate for poor quality that occurs when using heavyweight paper. When the two-sided printing function is used, paper may curl severely or become jammed. Enable this setting to prevent paper curling or jamming. - OFF - ON This setting is not functional in this model. Sets to activate when lightweight paper or paper which is easy to get uneven print density is used for printing. - OFF - ON Machine Settings 12-24