Chapter 1414-231. Check if the return guide sheet has ridden on the operation tray bin.2. If the return guide sheet has ridden on the operation tray bin, correct the position of return guide sheet so that it will be under the operation tray bin andthen perform a booklet job.F-14-3014.3.2.1.3 In booklet printing, paper misalignment/unstapled sheet problem occurs with 2nd page and later: Stack deliveryrollers of Finisher-AA1/AA2 lack pressure0021-4963imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1 (CUSTOM) / imagePRESS C1+ (Printer) / imagePRESS C1+[ Inspected by Canon Inc. ]DescriptionDuring a booklet-printing job, a Finisher unit failed to pull the 2nd sheet of paper back to the process tray correctly, consequently causing the sheet to misalignwithin the stack. Worse yet, a misaligned sheet of paper was not stapled in case the staple mode was set.CauseSince the upper and lower stack delivery rollers lacked pressure, the 2nd sheet and later sheets were not pulled back to the process tray correctly. In order toadjust the pressure applied to the upper and lower rollers in handling the 2nd sheet and later sheets, and thereby prevent the above symptom, the FinisherController Software was changed from Ver. 4.01 to Ver. 5.01.Field Remedy1. Check the version of the Finisher Controller Software; if it is earlier than Ver. 5.01, upgrade the software to Ver. 5.01.2. Referring to "Procedure for Adjusting Height of Swing Roller in Swing Unit", perform the height adjustment and then run a booklet copying.Reference: For the 1st sheet of paper, the swing guide goes down under its own weight and applies pressure to the upper and lower stack delivery rollers, andthus the sheet is pulled back to the process tray. For the 2nd sheets and later sheets of paper, however, the swing guide is lowered by the motor pulse control.14.3.2.1.4 Procedure to Improve the Accuracy of Skew Adjustment0020-7796imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1 (CUSTOM) / imagePRESS C1+ (Printer) / imagePRESS C1+ExplanationThe procedure to improve the accuracy of paper skew adjustment is explained below.Procedure in the fieldImprove the accuracy of skew adjustment following the procedure explained below.1) Output the monochrome halftone test pattern using the service mode.(Refer to for the setting procedure.)2) Check the skew amount in the output paper.To check the skew amount, measure the margin [A] on the front side of the leading edge and the margin [B] on the backside of the leading edge, and checkthe skew amount (A - B).F-14-313) Open the front cover and pull out the fixing feed assembly.4) Memorize the position [2] where the skew adjustment scale located on the backside of the registration unit [1] is placed.[B][A]