Chapter 1414-13F-14-9If you remove the right door or the drum unit when replacing the fixing assembly and work with the developing assembly inside the machine, the developing cyl-inder will remain exposed and become subjected to dust or other foreign matter. For this reason, it is important to remove the developing assembly as well as thedrum unit when disassembling and assembling the image formation or fixing system. This, however, does not apply if you are simply replacing the drum unit.If you have removed the developing assembly, be sure to place it on a clean sheet of paper to protect it from dust.14.2.1.5 Smudged/Streaked14.2.1.5.1 Stray Toner Along Fine Lines0007-7083iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The moisture held in paper evaporates in response to the heat from the fixing assembly, thus causing toner to fly astray. This problem tends to occur when paperhas low resistance and in a high temperature/high humidity environment.Use the following service mode item to decrease the developing bias, thus suppressing the symptom:COPIER>OPTION>BODY>FIX-SMR0: default1: decrease the developing bias by a single step (-20 V)2: decrease the developing bias by 2 steps (-40 V)If '2' is selected, the lines can become thinner.
