02/20002-13DocuPrint N2125 RAP 3Status Indicator Repair Analysis ProceduresInitial IssueRAP 3 DC Power LoadingInitial ActionsPerform RAP 2 DC Power before starting this RAP.WARNINGAC input voltages can be lethal. Use extreme care while checking the voltages on theLVPS.Disconnect the power cord while checking the continuity of fuses and while removing orreinstalling the components.ProcedureSwitch 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). Disconnect the following from the LVPS:• P/J281 (Print Engine Controller PWB)• P/J282 (System Controller PWB)• P/J283 (LVPS Fan)• Pn1 (5VDC Power Supply)Switch the printer power on and measure the voltages listed in Table 1 on the LVPS.All voltages are correct.Y NReplace the LVPS (REP 9.5).Switch the printer power off. Reconnect P/J281 to the LVPS. Switch the printer power on andmeasure the voltages listed in Table 1. All the voltages are correctY NSwitch the printer power off. Reconnect all the P/Js to the LVPS. Disconnect the followingfrom the Print Engine Controller PWB:• P/J22 (Laser)• P/J21 (Laser, SOS)• P/J23 (Connector PWB)• P/J25 (Print Cartridge Sensor)• P/J32 (Exit Motor)• P29 (Main Motor)• P/J26 (HVPS PWB)• P/J27 (Exit Sensor)• P/J31 (Stack Full Sensor)• P/J33 (Size 1 PWB)• P/J34 (Duplex PWB)• P/J35 (OCT PWB)Switch the printer power on and measure the voltages listed in Table 1. All voltages arecorrect.Y NReplace the Print Engine Controller PWB (REP 9.3).Switch the printer power off. Reconnect P/J23. Switch the printer power on. Measure thevoltages listed in Table 1. All the voltages are correct.Y NDisconnect the following from the Connector PWB:• P/J43 (Registration Sensor, Registration Clutch)• P/J42 (Toner Sensor)• P/J45 (Paper Set Sensor)• P/J44 (Pick Up Solenoid)• P/J41 (Envelope PWB)Switch the printer power on. Measure the voltages listed in Table 1. All the volt-ages are correct.Y NReplace the Connector PWB.Switch the printer power off. Reconnect one of the disconnected plugs. Switch theprinter power on. Measure the voltages listed in Table 1. All the voltages are cor-rect.Y NReplace the component just connected to the Connector PWB.Repeat the step with the next disconnected plug.Switch the printer power off. Reconnect one of the disconnected plugs. Switch the printerpower on. Measure the voltages listed in Table 1. All the voltages are correct.Y NReplace the component just connected to the Print Engine Controller PWB.Repeat the step with the next disconnected plug.Switch the printer power off. Reconnect one of the disconnected plugs. Switch the printerpower on. Measure the voltages listed in Table 1. All the voltages are correct.Y NReplace the component just connected to the LVPS.Repeat the step with the next disconnected plug.Table 1 LVPSRed Lead Black Lead VoltageP/J281 pin 7 Frame Ground +5.0VDCP/J281 pin 10 Frame Ground +3.3VDCP/J281 pin 1 Frame Ground +24.0VDCAA
