142 Phaser 5400 Laser Printer Service GuideRAP 54 Size SwitchThe error message indicates a problem with the standard feeder, the 500-Sheet Feederor the 2000-Sheet Feeder.Table 83 Size Switch Troubleshooting ProcedureStep Actions and Questions Yes No1 Is the problem with the 2000-Sheet Feeder? Go toStep 10.Go toStep 2.2 500-SHEET FEEDER TROUBLESHOOTING1. Remove the tray from the problem feeder.2. Inspect the Size Cams on the left side of the papertray.Are the Size Cams intact and in good condition(no broken surfaces)?Go toStep 3.Replace thePaper Tray[PL 2.1,page 386 /PL 2.2,page 388].3 SIZE SWITCH ACTUATOR INSPECTIONVisually inspect the Size Switch Actuators for damageor wear.Do the actuators move freely and appear to be ingood condition (not broken or damaged)?Go toStep 4.Replace theLeft GuideAssembly[RRP 3.6,page 279 /RRP 11.13,page 340].4 SIZE SENSORS TEST1. Enter Diagnostics mode.2. From the Main Menu, select Component Test / SensorInput / press [4] to start, [0] to stop.3. One at a time, press each of the Size Actuators, whileobserving the display.Does the LCD counter increment each time youpress and release one of the actuators?The SizeSensorsappear to beworkingcorrectly. Ifthe problempersists,replace thePrint EngineControllerBoard[RRP 8.5,page 310].Go toStep 5.5 Is the problem with the Tray 1 Size Sensor? Go toStep 9.Go toStep 6.6 ìNOî FROM STEP 5 ABOVE1. Switch printer power OFF.2. Remove the Left Cover from the 500-Sheet Feeder[RRP 11.3, page 330].3. Disconnect P/J138 from the Feeder Board.4. Check for continuity between the following pins, whilepressing the switches indicated: P138-1 and P138-3 when pressing SW1 Bottom P138-2 and P138-3 when pressing SW2 P138-4 and P138-3 when pressing SW3 P138-5 and P138-3 when pressing SW4 TopIs there continuity in each case?Go toStep 7.Check forpin-to-pincontinuity ofthe SizeSensorHarness.Repair orreplace asnecessary. Ifthe harnessis OK,replace theSize SensorSwitch[PL 11.3,page 416].
