Brother MFC-7450

vi
Confidential
8.29.3 TONER LED PCB ASSY ...................................................................................... 3-77
8.30 LVPS ................................................................................................................................ 3-78
8.30.1 LVPS PCB UNIT .................................................................................................. 3-78
8.30.2 LV SHIELD PLATE 2 ............................................................................................ 3-80
8.31 REGISTRATION FRONT SENSOR PCB ASSY .............................................................. 3-81
8.32 REGISTRATION REAR SENSOR PCB ASSY ................................................................. 3-85
8.33 DRIVE SUB ASSY ............................................................................................................ 3-88
8.34
DEV JOINT / DEV GEAR JOINT/53R / REGISTRATION PENDULUM GEAR SPRING ........ 3-90
8.35 THERMISTOR HARNESS UNIT ...................................................................................... 3-91
8.36 TONER SENSOR PCB UNIT ASSY ................................................................................. 3-92
8.37 REGISTRATION SOLENOID / T1 SOLENOID ................................................................ 3-93
8.37.1 REGISTRATION SOLENOID ............................................................................... 3-93
8.37.2 T1 SOLENOID ...................................................................................................... 3-95
8.38 MAIN SHIELD PLATE / EJECT SENSOR PCB ASSY ..................................................... 3-96
8.39 RUBBER FOOT .............................................................................................................. 3-100
8.40 MAIN FRAME L ASSY .................................................................................................... 3-101
CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT .............................. 4-1
1. IF YOU REPLACE THE MAIN PCB ............................................................................................. 4-1
2. IF YOU REPLACE THE WIRELESS LAN PCB ......................................................................... 4-11
3. IF YOU REPLACE THE LASER UNIT ....................................................................................... 4-12
4. IF YOU REPLACE THE FB UNIT .............................................................................................. 4-13
CHAPTER 5 SERVICE FUNCTIONS .................................................................. 5-1
1. MAINTENANCE MODE ............................................................................................................... 5-1
1.1 How to Enter the Maintenance Mode ................................................................................. 5-1
1.2 How to Enter the End User-accessible Maintenance Mode ............................................... 5-1
1.3 List of Maintenance-mode Functions .................................................................................. 5-2
1.4 Detailed Description of Maintenance-mode Functions ....................................................... 5-3
1.4.1 EEPROM Parameter Initialization (Function code 01, 91) ..................................... 5-3
1.4.2 Printout of Scanning Compensation Data (Function code 05) ............................... 5-4
1.4.3 Placement of CIS Unit in Position for Transportation (Function code 06) .............. 5-6
1.4.4 ADF Performance Test (Function code 08) ............................................................ 5-6
1.4.5 Test Pattern (Function code 09) ............................................................................. 5-7
1.4.6 Worker Sw WSW) Setting and Printout ................................................................. 5-8
1.4.7 Operational Check of LCD (Function code 12) .................................................... 5-13
1.4.8 Operational Check of Control Panel Button (Function code 13) .......................... 5-14
1.4.9 ROM Version Check (Function code 25) .............................................................. 5-15
1.4.10 Operational Check of Sensors (Function code 32) .............................................. 5-16
1.4.11 PC Print Function setting (Function code 32) ....................................................... 5-18