96 Phaser 5400 Laser Printer Service GuideRAP 30 Error Code U1: Motor FailurePower Off / OnThere is a problem with the Main Motor.Table 51 Error Code U1: Motor Failure Troubleshooting ProcedureStep Actions and Questions Yes No1 MOTOR ROTATION CHECK1. Open the Rear Cover.2. If installed, remove the Duplex Assembly.3. Rotate the rotor of the Main Motor counterclockwise(as viewed from the right side of the printer) manually.Does the rotor of the Main Motor rotatesmoothly?Go toStep 4.Go toStep 2.2 PRINT CARTRIDGE ISOLATION1. Open the Top Cover and remove the Print Cartridge.2. Manually rotate the rotor of the Main Motor clockwise.Does the rotor of the Main Motor rotatesmoothly?Replace thePrintCartridge[PL 8.1,page 402].Go toStep 3.3 FUSER ISOLATION1. Remove the Fuser Assembly [RRP 5.1, page 288].2. Manually rotate the Fuser Assembly Drive Gear.Does the Fuser rotate smoothly?Go toStep 4.Replace theFuser.4 REGISTRATION ROLLERS ROTATION CHECK1. Open the Top Cover.2. Remove the Print Cartridge.3. Manually rotate the Metal Registration Roller and theRubber Registration Roller.Do the Metal Registration Roller and the RubberRegistration Roller rotate smoothly?Go toStep 5.Replace thePaperTransportAssembly[RRP 4.1,page 283].5 EXIT ASSEMBLY ROTATION CHECK1. Open the Rear Cover.2. Manually rotate the Exit Assembly that is attached tothe Rear Cover.Does the Exit Assembly rotate smoothly?Go toStep 6.Replacecomponentsor the ExitAssembly asnecessary[PL 6.1,page 398].6 DRIVE GEARS ROTATION CHECK1. Close the Rear Cover.2. With the Top Cover still open, cheat the Top CoverInterlock.3. Enter Diagnostics mode.4. From the Main Menu, select Component Test / MainMotor / press [4] to start, allow to continue runningthrough Step 8 below.Do the Main Motor and drive gears run smoothlyand all drive gears are in good condition?Go toStep 7.Go toRAP 47,page 128.
