1 - 203Chapter 1 TroubleshootingVersion 1 2008.02.15FIP1.23 010-354 Restart PrinterStep Check Yes NoPossible causative parts:SENSOR HUM (PL9.1.19)HARN ASSY HUM (PL10.1.4)PWBA MCU (PL9.1.20)1 Checking the SENSOR HUM for installationIs the SENSOR HUM installed correctly? Go to step 2.Reseat the SEN-SOR HUM, thengo to step 2.2 Does the error still occur when the power is turned ON? Go to step 3. End of work3Checking the connectors for connectionCheck the connections between the PWBA MCU andSENSOR HUM.Are P/J26 and P/J261 connected surely?Go to step 4.Reconnect theconnector(s)P/J26 and/orP/J261 surely,then go to step 4.4Checking the HARN ASSY HUM for continuityDisconnect P/J26 from the PWBA MCU.Disconnect P/J261 from the SENSOR HUM.Is each cable of P/J26 <=> P/J261 continuous?Go to step 5.Replace theHARN ASSYHUM.5Checking the power to SENSOR HUMDisconnect the connector of P/J26 on PWBA MCU.Is the voltage across ground <=> J26-4pin on the PWBAMCU, about +5 VDC?Replace the SEN-SOR HUM. (Referto Removal 29/Replacement 15)Replace thePWBA MCU.(Refer to Removal30/Replacement14)
