02/20002-46 DocuPrint N2125RAP 54Initial IssueStatus Indicator Repair Analysis ProceduresRAP 54 550 Sheet Feeder Assembly Not RecognizedController does not recognize the Feeder Assembly.ProcedureCheck the alignment of the printer to the 550 Sheet Feeder and the alignment of the top 550Sheet Feeder to the second 550 Sheet Feeder, if installed. Ensure that the connectors areproperly aligned and properly connected. All connectors are properly aligned and con-nected.Y NReseat the feeders and printer to obtain proper alignment and connection.Switch the printer power off. Remove the Left Interface Cover (REP 1.1), Left Cover (REP 1.2),and the Left Plate Assembly (REP 1.11). Switch the printer power on. On the Print Engine Con-troller PWB, check the voltage between P/J33 pin 13 and frame ground. The voltage is24VDC.Y NOn the Print Engine Controller PWB, check the voltage between P/J33 pin 6 and frameground. The voltage is 24.0VDC.Y NReplace the Print Engine Controller PWB (REP 9.3).Remove Paper Tray 2. Check the voltage between the bottom terminal on the mating con-nector on the Tray 2 feeder and frame ground. The voltage is 24.0VDC.Y NRemove paper tray 1. Check the voltage between the bottom terminal on the matingconnector on the Tray 1 feeder and frame ground. The voltage is 24.0VDC.Y NReplace the Tray 1 Size PWB (REP 3.13). If the problem persists, replace theTray 1 Feeder PWB (REP 3.9).Check the resistance between the bottom and top terminals of the mating connectoron paper tray 1. There is continuity between the two pins.Y NReplace the paper tray mating connector (PL 2.2).Check that the paper tray mating connector and the feeder mating connector areproperly aligned when the tray 1 is inserted into the feeder. The mating connectorsare properly connected when the paper tray is inserted.Y NRepair or replace components as necessary.Replace the Tray 1 Size PWB (REP 3.13). If the problem persists, replace the Tray 1Feeder PWB (REP 3.9).Check the resistance between the bottom and top terminals of the mating connector onthe paper tray 2. There is continuity between the two pins.Y NReplace the paper tray mating connector (PL 2.2).Check that the paper tray mating connector and the feeder mating connector are properlyaligned when the tray is inserted into the feeder. The mating connectors are properlyconnected when the paper tray is inserted.Y NRepair or replace components as necessary.Replace the Tray 2 Size PWB (REP 11.19). If the problem persists, replace the Tray 2Feeder PWB (REP 11.9).The printer has two optional 550 Sheet Feeders installed.Y NReplace the Printer Engine Controller PWB (REP 9.3).On the Print Engine Controller PWB, check the voltage between P/J33 pin 14 and frameground. The voltage is 24.0VDC.Y NRemove Paper Tray 3. Check the voltage between the bottom terminal on the mating con-nector on the Tray 3 feeder and frame ground. The voltage is 24.0VDC.Y NReplace the Tray 3 Size PWB (REP 11.19). If the problem persists, replace the Tray3 Feeder PWB (REP 11.9).Check the resistance between the bottom and top terminals of the mating connector onpaper tray 3. There is continuity between the two pins.Y NReplace the paper tray mating connector (PL 2.2).Check that the paper tray mating connector and the feeder mating connector are properlyaligned when the tray is inserted into the feeder. The mating connectors are properlyconnected when the paper tray is inserted.Y NRepair or replace components as necessary.Replace the Tray 3 Size PWB (REP 11.19). If the problem persists, replace the Tray 3Feeder PWB (REP 11.9).Replace the Print Engine Controller PWB (REP 9.3).AABB
