Brother HL-5450DN - Page 6

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Confidential
9. DISASSEMBLY PROCEDURE .................................................................................................. 3-15
9.1 Preparation ........................................................................................................................ 3-15
9.2 Paper tray 1 ....................................................................................................................... 3-16
9.3 Back cover / Outer chute ................................................................................................... 3-18
9.4 Fuser cover........................................................................................................................ 3-19
9.5 MP cover ASSY................................................................................................................. 3-20
9.6 Front cover ASSY.............................................................................................................. 3-21
9.7 Side cover L / Access cover .............................................................................................. 3-22
9.8 Side cover R ...................................................................................................................... 3-23
9.9 Top cover ASSY ................................................................................................................ 3-24
9.10 Control panel ..................................................................................................................... 3-26
9.11 Paper stack lever............................................................................................................... 3-29
9.12 Wireless LAN PCB (Wireless Network model only)........................................................... 3-30
9.13 Fuser unit........................................................................................................................... 3-31
9.14 Main PCB ASSY................................................................................................................ 3-34
9.15 Laser unit........................................................................................................................... 3-36
9.16 Low-voltage power supply PCB ASSY .............................................................................. 3-37
9.17 Toner LED PCB ASSY ...................................................................................................... 3-40
9.18 Main fan............................................................................................................................. 3-42
9.19 Air duct / Filter.................................................................................................................... 3-44
9.20 Relay front PCB ASSY ...................................................................................................... 3-45
9.21 Registration clutch / T1 clutch............................................................................................ 3-46
9.22 Main frame L ASSY ........................................................................................................... 3-47
9.23 Main motor ASSY .............................................................................................................. 3-49
9.24 Develop joint gear 37 / Develop joint ................................................................................. 3-51
9.25 LT drive gear 29................................................................................................................. 3-52
9.26 Toner sensor PCB ASSY................................................................................................... 3-53
9.27 MP solenoid....................................................................................................................... 3-54
9.28 Develop clutch 51R / Develop one way clutch 53.............................................................. 3-55
9.29 New toner actuator ............................................................................................................ 3-56
9.30 Fuser drive gear 39............................................................................................................ 3-57
9.31 Duplex solenoid ................................................................................................................. 3-59
9.32 Back cover sensor ............................................................................................................. 3-60
9.33 LT connector (T1) .............................................................................................................. 3-61
9.34 T1 roller holder ASSY ........................................................................................................ 3-62
9.35 High-voltage power supply PCB ASSY ............................................................................. 3-63
9.36 Eject sensor PCB ASSY.................................................................................................... 3-66
9.37 MP roller holder ASSY / MP separation pad ASSY / MP separation pad spring ............... 3-67
9.38 T1 paper feed sensor PCB ASSY /
T1 paper feed actuator / T1 paper feed actuator spring .................................................... 3-68
9.39 MP paper empty sensor PCB ASSY /
MP paper empty actuator 1 / MP paper empty actuator 2 ................................................. 3-70