Konica Minolta bizhub 160 Service Manual - Page 333

DF-501 5. Service Mode 5.2.2 ADF MAIN REGIST Field Service Ver. 1.0 Apr. 2005 Functions • To adjust for variations in the accuracy of all parts and their mounting accuracy by varying the scanning start position in the main scanning direction when using the Automatic Document Feeder. Use • After the ADF SUB ZOOM adjustments have been performed • When the Upper Cover Assy. (Original Glass) has been replaced • When the ADF has been replaced Adjustment Specification • After finishing the ADF SUB ZOOM adjust- ments. B • Adjust the amount that widths A and B in the printed test pattern are shifted so that the following specification is met. A Specifications 0 ± 2.0 mm 1382D011AA Setting Range 90 to 110 (1 increment = 0.5 mm) The default setting is "100" Adjustment If the width of A is less than the width of B ..... Increase the setting. Instruction If the width of B is less than the width of A ..... Decrease the setting. Adjustment Procedure 1. Print the test pattern. 2. Enter the "ADJUST" menu in the Service mode. 3. Load the test pattern into the Automatic Document Feeder and make a test copy. NOTE • The test pattern should be positioned vertically. • Use A4 or Letter paper loaded into Tray 1 to make the test copy. 4. Fold the copy of the test pattern in half, and then check if the fold aligns with the centerline. If they are not aligned, adjust it according to the following procedure. 5. Change the setting. If the shift cannot be adjusted to within the specification with a single adjustment, perform the adjustment again to change the setting. 6. Press the Yes key to apply the setting. NOTE • If the Stop key is pressed, instead of the Yes key, the main screen is displayed and the setting returns to that before it was changed. • Load the test pattern into the Automatic Document Feeder again, make another test copy, and check it. Adjustment / Setting 14