Phaser 4400 Laser Printer Service Manual 2-31Close Front Cover/Close Rear Cover.(Close Front Cover/Close Rear Cover)3 Is the paper size in the problem tray withinprinter specifications?Go to step 4. Replace withpaper thatmeetsspecifications.4 Check the side guides and the Paper Stack End Guidein the problem tray.Are all guides properly set for the size of paperinstalled?Go to step 5. Properly setthe guides.5 Check the size cam on the left side of the paper tray(see the Paper Size Actuators table below).Are the cams in good condition (not broken) anddo they move freely as the paper tray end guideis moved.Go to step 6. Replace thepaper tray (PL2.1 onpage 7-6/PL11.1 onpage 7-26).6 1. Reinstall the paper tray.2. Enter Service Diagnostics and select Sensor Tests.3. Scroll to Paper Tray Size Read and press OK.4. Select ìTray 1 Sizeî and press OK.5. Press ìBackî and select another tray size until allinstalled trays are tested.Does the paper size displayed on the FrontPanel display match the size of the paperactually loaded in the tray?Replace theEngine LogicBoard (RRP9.3 onpage 6-89).Replace theTray SizePWB(RRP 3.13 onpage 6-42/RRP 11.19 onpage 6-139).Close Front/Rear Cover Troubleshooting ProcedureStep Actions and Questions Yes No1 1. Open and close the Front Cover.2. Inspect the movement of the Interlock Switch.Does the actuator tab on the Front Cover pressdown on the Interlock Switch lever?Go to step 2. Replace theFront CoverAssembly(PL 1.1 onpage 7-2).2 1. Open and close the Rear Cover.2. Inspect the movement of the Interlock Switch.Does the actuator tab on the Rear Cover pressdown on the Interlock Switch lever?Go to step 3. Replace theRear CoverAssembly(PL 1.2 onpage 7-4).3 1. Enter Service Diagnostics and select Sensor Tests.2. Scroll to Rear Cover Switch test and press OK.3. Open and close the Rear Cover.Does the message on the display alternatebetween ìClosedî and ìOpenî as you open andclose the Rear Cover?Go to step 5. Go to step 4.Paper Size Error Troubleshooting Procedure (cont'd.)Step Actions and Questions Yes No
