3-12 Phaser 3635MFPIQ8, IQ9Draft 4Image QualityIQ8 Dark Image RAPUse this RAP when the machine produces dark images in all modes.ProcedureWARNINGSwitch 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.Perform the following:1. Ensure that the paper tray settings match the paper or media size in the trays.2. Perform the Shading Test procedure, GP 15. If the shading test fails, install new compo-nents as necessary:• CCD module, PL 14.10 Item 8.• CCD module cable, PL 14.10 Item 23.• Scanner assembly, PL 14.10 Item 26.3. Refer to Wiring Diagram 2. Perform the following:• Check the spring contacts between the HVPS PL 1.10 Item 3 and the print cartridgePL 9.10 Item 1. The spring contacts supply the voltages to the print cartridge. If nec-essary, clean the spring contacts.• If necessary, install a new HVPS, PL 1.10 Item 3.4. Perform OF7 Main PWB Check RAP.IQ9 Background RAPUse this RAP when the printed sheets have a dark or spotted background, as shown in Figure1.Figure 1 BackgroundProcedureWARNINGSwitch 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.Perform the following:1. Ensure that the paper tray settings match the paper or media size in the trays. Also,ensure the media is within specification. Refer to GP 9 Paper and Media Specifications.2. Ensure the machine is being operated in the correct environmental conditions. Refer toGP 7 Machine Specifications.3. Clean the xerographic drum, make 10 blank copies. If necessary, install a new print car-tridge, PL 9.10 Item 1.4. Check the transfer roll, PL 9.10 Item 2. Make sure the transfer roll is clean and moves upand down smoothly. If necessary, install a new transfer roll, PL 9.10 Item 2.5. Refer to Wiring Diagram 2. Perform the following:• Check the spring contacts between the HVPS, PL 1.10 Item 3, and the print car-tridge PL 9.10 Item 1. The spring contacts supply the voltages to the print cartridge.If necessary, clean the spring contacts.• Install a new HVPS, PL 1.10 Item 3.
