7 Using the back of the Cleaning Brush, move the Switch to the side opposite ●, corresponding to the size ofthe paper for printing.In this case, note that you will move the switch in the opposite direction from the direction in step 4.Note• The Switch only moves number 1 and the number thatmatches the paper size. Set all of the switches wherethe number does not match the paper size in switchesnumber 2 and higher to the ● side.8 Close the Top Cover.9 Install the Stacker on the printer.(See "Installing and Removing the Stacker On the Printer.") ➔P.376The contrast becomes uneven during printingThe contrast becomes uneven during printingCause Corrective ActionThe paper feed amount is out of adjustment. Adjust the feed amount.(See "Adjusting the Feed Amount.") ➔ P.564The type of paper specified in the printer driv-er does not match the type loaded in theprinter.Load paper of the same type as you have specified in the printer driver.(See "Loading Rolls in the Printer.") ➔ P.345(See "Loading Sheets in the Printer.") ➔ P.369Make sure the same type of paper is specified in the printer driver as you have loa-ded in the printer.1. Press the Stop button and stop printing.2. Change the type of paper in the printer driver and try printing again.The length of printed images is inaccurate in the feeding directionThe length of printed images is inaccurate in the feeding directionCause Corrective ActionIn the Control Panel menu, Adj. Priority is setto Print Quality.Set Adj. Priority to Print Length in the Control Panel menu, and then executeAdjust Length.(See "Adjusting the Feed Amount.") ➔ P.564If Adjust Length is executed with the Stackerinstalled on the printer, adjustment is not per-formed correctly.Remove the Stacker from the printer and execute Adjust Length.(See "Installing and Removing the Stacker On the Printer.") ➔ P.376(See "Adjusting Line Length.") ➔ P.568The type of paper specified in the printer driverdoes not match the type loaded in the printer.Load paper of the same type as you have specified in the printer driver.(See "Loading Rolls in the Printer.") ➔ P.345(See "Loading Sheets in the Printer.") ➔ P.369The contrast becomes uneven during printing iPF850User's GuideTroubleshooting Problems with the printing quality640
