Chapter 1313-6F-13-83) Execute the primary charging assembly cleaning from service mode.(primary charging wire cleaning: COPIER > FUNCTION > CLEANING> WIRE-CLN)4) Select the service mode (execution of potential control: COPIER >FUNCTION > DPC > DPC) and then press [OK].5) Turn OFF/ON the main power.13.3.3 Replacing the Potential Sensor 0014-0479imagePRESS C1 P / imagePRESS C1When replacing the potential sensor, go through the following procedure.The potential sensor and the potential control PCB are adjusted in pairs. Re-placement of them must be performed at the same time.1) Pull out the potential sensor cable [1] from the processing unit hole [2].F-13-92) Return the processing unit [1] and the fixing/feeding unit [2].F-13-103) Connect the cable [1].F-13-114) Connect the cable to the connector [2] of the potential sensor [1].5) Attach the potential sensor [1] by reference to the boss [A] of the electrodefor checking potential (FY9-xxxx) [3].6) Connect the clip [4] for checking the potential sensor to the main bodyframe (GND).F-13-12Check to see that potential sensor is attached in an appropriate direction tothe electrode for checking the potential sensor.F-13-137) After turning ON the main power, set the service mode COPIER > FUNC-TION > INSTALL > AINR-OFF as '1'.8) Monitor the fixing upper roller temperature by the service mode COPIER> DISPLAY > ANALOG > FIX-UC and go through the following oper-ations depending on conditions:- In case the temperature indicated as 50 deg C or less, place hand on theshutter assembly [1] when the temperature reaches 145 deg C. Releasehand from the shutter assembly when the drum rotation stops (approx.20sec).- In case the temperature indicated as 50 deg C or more, place hand on theshutter assembly [1] when the temperature reaches 158 deg C. Releasehand from the shutter assembly when the drum rotation stops (approx.20 sec).[1][2][3][3][1] [2][1][2][1][1][3][4][1][2] [A][A]
