160 Phaser 5400 Laser Printer Service Guide6 ìNOî FROM STEP 5 ABOVE1. Switch printer power OFF.2. Remove the 500-Sheet Feeder Left Tray Guide.3. Check for continuity between all pins of P/J133 andP/J137.Do all pins check OK for continuity?Replace theLow PaperSensor[RRP 11.18,page 347].Repair orreplace theharness asnecessary.7 ìYESî FROM STEP 5 ABOVEMeasure the voltage between P/J132-7 (Tray 2) orP/J132-8 (Tray 3) and frame ground as you actuate anddeactuate the Low Paper Sensor.Does the voltage measure +0.9 VDC whendeactuated and 0.0 VDC when actuated?Go toStep 8.Replace theFeederBoard[RRP 11-7,page 334].8 ìYESî FROM STEP 7 ABOVE1. Switch printer power OFF.2. Remove the printer Left Side Cover [RRP 1.1,page 250] and the Print Engine Controller BoardCover [RRP 8.5, page 310].3. Switch printer power ON.4. Measure the voltage between P/J13-7 (Tray 2) orP/J132-8 (Tray 3) and frame ground as you actuateand deactuate the Low Paper Sensor.Does the voltage measure +0.9 VDC whendeactuated and 0.0 VDC when actuated?Replace thePrint EngineControllerBoard[RRP 8.5,page 310].Check forcontinuitybetweenP/J132 andP/J131, thenbetweenP/J131 andP/J13, allpins. Repairor replace asnecessary.9 SUSPECT COMPONENTSThe following printer components and areas areassociated with this specific problem. One or more ofthese components or areas may have failed partially orcompletely. If you cannot isolate this problem using thesteps in this Repair Analysis Procedure, replace eachcomponent or troubleshoot each area listed below, oneat a time, until you isolate and solve the problem. Low Paper Sensor Actuator [RRP 11.18, page 347] Tray Left Guide Assembly [RRP 11.13, page 340] Feeder Board [RRP 11-7, page 334] Print Engine Controller Board [RRP 8.5, page 310]Table 91 Low Paper Tray 2 (or Tray 3) / 500-Sheet Feeder TroubleshootingProcedure (cont'd.)Step Actions and Questions Yes No
