Brother DCP-7055 Service Manual page 6

9.10.14Document Scanning Position Detection Sensor /
Document Detection/ADF Cover Open Sensor .................................................... 3-59
9.11 Document Cover ASSY (For models without ADF) .......................................................... 3-61
9.12 Pull Arm L / Pull Arm R / Pull Arm Spring ......................................................................... 3-63
9.13 Document Scanner Unit .................................................................................................... 3-66
9.14 Panel Unit ......................................................................................................................... 3-67
9.14.1 Panel Unit ............................................................................................................. 3-67
9.14.2 Panel PCB ASSY ................................................................................................. 3-68
9.14.3 Rubber Key L/R .................................................................................................... 3-69
9.14.4 LCD ...................................................................................................................... 3-70
9.15 Pull Arm Guide .................................................................................................................. 3-71
9.16 NCU ASSY ....................................................................................................................... 3-72
9.17 Speaker Unit ..................................................................................................................... 3-76
9.18 Joint cover ........................................................................................................................ 3-78
9.19 Fuser Unit ......................................................................................................................... 3-80
9.20 Low voltage power supply PCB ASSY ............................................................................. 3-83
9.21 Fan Motor 60 ASSY .......................................................................................................... 3-86
9.22 High Voltage Power Supply PCB ASSY ........................................................................... 3-87
9.23 New Toner Sensor PCB ASSY ......................................................................................... 3-88
9.24 Filter .................................................................................................................................. 3-89
9.25 Laser Unit ......................................................................................................................... 3-90
9.26 Wireless LAN PCB ASSY (Wireless network model only) ................................................ 3-92
9.27 Pick-up Roller Holder ASSY ............................................................................................. 3-93
9.28 Rubber Foot ...................................................................................................................... 3-94
9.29 Main PCB ASSY ............................................................................................................... 3-95
9.30 T1 Clutch ASSY, REG Clutch ASSY ................................................................................ 3-96
9.31 Main Frame L ASSY ......................................................................................................... 3-98
9.32 Develop Drive Sub ASSY, Develop Gear Joint/52 ......................................................... 3-100
9.33 Motor Drive Sub ASSY, Main Motor ............................................................................... 3-102
9.34 Internal Temperature Sensor .......................................................................................... 3-104
9.35 Paper Eject Sensor PCB ASSY ...................................................................................... 3-105
9.36 Fuser Gear 28/34 ............................................................................................................ 3-107
CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB ASSY .............................................................................. 4-1
1.1 Rewriting the firmware (Sub firmware, Main firmware) ....................................................... 4-2
1.1.1 Checking firmware version ..................................................................................... 4-2
1.1.2 Rewriting the firmware using computer .................................................................. 4-2
1.2 Initialization of EEPROM of Main PCB ASSY (Maintenance Mode: Code 01) ................... 4-3
1.3 Setting by Country (Maintenance Mode: Code 74) ............................................................. 4-3
1.4 Setting the Serial Number ................................................................................................... 4-3
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