Brother MFC-9420CN Service Manual page 8

5.1.54 Toner Sensor PU (TTR) .....................................................................................5-64
5.1.55 Toner Present Sensor PU ..................................................................................5-65
5.1.56 Belt Sensor.........................................................................................................5-65
5.1.57 Left Tray Guide PU / Paper Size Sensor PU / Room Temp Thermistor PU ......5-66
5.1.58 Left Toner Guide PU ..........................................................................................5-67
5.1.59 Paper Exit Unit ...................................................................................................5-68
5.1.60 Transfer Roller ASSY PU ...................................................................................5-69
5.1.61 Transfer Base ASSY PU ....................................................................................5-69
5.1.62 Registration Roller ASSY PU .............................................................................5-70
5.1.63 Registration Actuator PU....................................................................................5-70
5.1.64 Exit Guide ASSY PU / Exit Drive ASSY PU / Exit Idle Roller ASSY PU.............5-71
5.1.65 Paper Sensor (PFUL).........................................................................................5-72
5.1.66 Exit Roller ASSY PU / Paper Exit Actuator PU ..................................................5-73
5.1.67 Fuser Exit Actuator PU.......................................................................................5-74
5.1.68 Paper Sensor (PT2) ...........................................................................................5-74
5.1.69 Discharging Brush PU ........................................................................................5-75
5.1.70 Back Cover Latch ASSY PU...............................................................................5-76
5.1.71 Transfer Roller Guide PU...................................................................................5-77
5.1.72 Paper Guide (A) PU ...........................................................................................5-78
5.1.73 Paper Guide (B) PU ...........................................................................................5-78
5.1.74 Paper Guide (C) PU / Paper Sensor (PT1, PEU) / OHP Sensor PU /
Tray Empty Actuator PU ....................................................................................5-79
5.1.75 Paper Guide (D) PU ...........................................................................................5-80
5.1.76 Paper Feed Roller / Separator Pad ....................................................................5-80
5.2 LUBRICATION ........................................................................................................5-81
5.3 HARNESS ROUTING ..............................................................................................5-82
CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS
REPLACEMENT
6.1 IF YOU REPLACE THE MAIN PCB ..........................................................................6-1
6.1.1 EEPROM Customizing .........................................................................................6-1
6.1.2 EEPROM Parameter Initialization ........................................................................6-1
6.1.3 ID Code Entry to the EEPROM ............................................................................6-1
vi Confidential