10-2 Phaser 6121MFP Service ManualWiringPlug/Jack Designations and Locator DiagramsThis chapter contains the plug/jack designators, locator diagrams, and wiringdiagrams for the print engine, Scanner, and ADF.The Plug/Jack Locator diagrams show the P/J locations within the printer. Usethese illustrations to locate connections called out in the Troubleshootingprocedures presented in Sections 3, 4, and 5.1. Locate the P/J connector designator in the following table.2. With this information, go to the associated map.3. Use the coordinates to locate the connection indicated on the map with its P/Jdesignation number.4. The Description column provides a brief description of each connection.Print Engine Plug/Jack DesignatorsPrint Engine Plug/Jack DesignatorsMap P/J Coordinates DescriptionEngine Control Board1 P/J1 B-138 Connects Engine Control Board to P/J10 of the ImageProcessor Board1 P/J2 J-137 Connects Engine Control Board to CN5 Power Supply1 P/J3 J-138 Connects Engine Control Board to CN7 of the PowerSupply1 P/J5 H-135 Connects Engine Control Board to CN4 of the RackMotor, CN6 of the Cleaning Blade Pressure/RetractionSolenoid, P/J30 of the Developing Motor, and P/J32 ofthe Rack Positioning Sensor1 P/J6 K-136 Connects Engine Control Board to CN4 of the Fuser1 P/J8 F-134 Connects Engine Control Board to PJ37 of the MainMotor1 P/J9 J-135 Connects Engine Control Board to CN1 of the ImagingUnit1 P/J10 G-135 Connects Engine Control Board to CN2 of the Tray 1Feed Solenoid, CN3 of the Conveyance Solenoid, andCN5 of the 2nd Image Transfer Pressure/RetractionSolenoid1 P/J12 H-139 Connects Engine Control Board to P/J40 of theRegistration Sensor, and P/J39 of the 2nd ImageTransfer Retraction Position Sensor (PS3)1 P/J14 I-140 Connects Engine Control Board to P/J41 of theTemperature/Humidity Sensor1 P/J15 I-139 Connects Engine Control Board to P/J42 of the ContactSwitch (SW5)1 P/J16 I-138 Connects Engine Control Board to the Ventilation Fan1 P/J17 D-135 Connects Engine Control Board to CN1 of the HighVoltage Board
