HP Officejet Pro X451 - Page 8

Left front cover ......................................................................................... 28
Top cover ................................................................................................ 29
Front cover .............................................................................................. 34
Right cover .............................................................................................. 35
Main assemblies ..................................................................................................... 36
Aerosol fan assembly ................................................................................ 36
Separator/pick assembly .......................................................................... 43
Duplex drive module ................................................................................. 48
Control panel (X451 models only) .............................................................. 50
Control panel (X551 models only) .............................................................. 51
Power supply ........................................................................................... 53
Backscatter drop detect (BDD) assembly ...................................................... 55
Service sled assembly ............................................................................... 57
Right cross brace ...................................................................................... 62
Plate console left ...................................................................................... 65
Plate console right .................................................................................... 66
Printbar ................................................................................................... 67
Printbar calibration procedure ................................................................... 75
Printbar FFC replacement .......................................................................... 77
Platen ..................................................................................................... 78
Drying path gear assembly ........................................................................ 82
Printbar lift mechanism assembly ................................................................ 83
Tray lift transmission assembly ................................................................... 85
Output drive kit ........................................................................................ 87
Output drive gears ................................................................................... 90
Output drive shaft 6 .................................................................................. 90
Output drive shaft 5 .................................................................................. 92
Output drive shaft 4 .................................................................................. 94
Drive shaft 3 ............................................................................................ 95
Inner top frame ........................................................................................ 98
Top paper guide .................................................................................... 101
Top left paper guide assembly ................................................................. 104
Center left paper guide assembly ............................................................. 106
Paper REDI sensors in the center left paper guide assembly ......................... 108
Service sled transmission ......................................................................... 109
Printed circuit-board assemblies (PCAs) .................................................................... 110
PCA safety shield ................................................................................... 110
Sensor carriage PCA and encoder strip .................................................... 111
Power button PCA .................................................................................. 115
Duplex module sensor PCA ..................................................................... 116
Temperature sensor ................................................................................ 117
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