1 – 67Chapter 1 TroubleshootingFIP1.45 SENSOR FULL STACKStep Check Yes NoPossible causes:SENSOR FULL STACK (PL10.1.26)ACTUATOR FULL STACK (PL10.1.10)HARNESS ASSY EXIT SNR (PL10.1.27)HVPS/MCU (PL12.1.19)1Checking ACTUATOR FULL STACKOpen COVER ASSY REAR 500.Move ACTUATOR FULL STACK with a finger.Does ACTUATOR FULL STACK operate smoothly?Does the flag go into the sensor detecting point whenthere is low paper, and out of the detecting point whenfull?With tool Go tostep 2. Withouttool Go to step 3.Replace ACTUA-TOR FULL STACK.2Checking SENSOR FULL STACK (1)Remove EP CARTRIDGE.Close COVER ASSY REAR 500.Move ACTUATOR FULL STACK up and down.Does the number increase one by one, every timeACTUATOR FULL STACK operates?Check using Chapter 2 Diagnostic [Sensor/SwitchCheck].Replace HVPS/MCU.(RRP12.10)Go to step 3.3Checking HARNESS ASSY EXIT SNR for continuityRemove 500 EXIT ASSY (PL10.1.2) (RRP10.2)Remove HARNESS ASSY EXIT SNR.Is there continuity betweenJ29-1 and J290-3?J29-2 and J290-2?J29-3 and J290-1?Go to step 4.Replace HAR-NESS ASSY EXITSNR.4Checking SENSOR FULL STACK (2)Replace SENSOR FULL STACK. (RRP10.7)Is the problem cleared?End of work Replace HVPS/MCU. (RRP12.10)
