3-10 Phaser 3635MFPIQ5, IQ6Draft 4Image QualityIQ5 Vertical Black Lines or Bands RAPUse this RAP when there are black lines or bands along the process direction, as shown in Fig-ure 1.Figure 1 Vertical black line and bandProcedureWARNINGSwitch off the electricity to the machine. Disconnect the power cord from the customersupply while performing tasks that do not need electricity. Electricity can cause death orinjury. Moving parts can cause injury.1. If the defect is only present on received faxes, ensure the defect is not being generatedby the fax machine that is transmitting the fax.2. If the defect is only present when making copies, clean the document glass.3. If the defect is only present when making copies from the DADF, clean the CVT glass.4. Lightweight media can cause fusing problems that may result in vertical lines. Ensure thecustomer is using media that is within specification. Refer to GP 9 Paper and Media Spec-ifications.5. The fuser may be contaminated. Make 10 blank copies. Install new components as nec-essary, PL 10.10, PL 10.12 and PL 10.15.6. Refer to Wiring Diagram 5. Check that the harness between the LSU and CN24 MainPWB is correctly and securely connected.7. Install new components as necessary:• Print cartridge, PL 9.10 Item 1.• LSU, PL 6.10 Item 1.IQ6 Vertical White Lines RAPUse this RAP when there are white lines along the process direction, as shown in Figure 1.Figure 1 Vertical white linesProcedureWARNINGSwitch off the electricity to the machine. Disconnect the power cord from the customersupply while performing tasks that do not need electricity. Electricity can cause death orinjury. Moving parts can cause injury.1. Remove the print cartridge, PL 9.10 Item 1. Ensure there are no obstructions that blockthe LSU from imaging the print cartridge.2. Remove the LSU, PL 6.10 Item 1. Clean the LSU window using a clean, lint-free cloth. Ifnecessary, install a new LSU, PL 6.10 Item 1.3. Install a new print cartridge, PL 9.10 Item 1.