Filter
Top Products
iv ENWW
M14 (charger cleaning) control . . . . . . . . .60
M10 (transfer/separation cleaning)
control . . . . . . . . . . . . . . . . . . . . . . . .61
PCL/TSL control . . . . . . . . . . . . . . . . . . . . 62
Developing unit . . . . . . . . . . . . . . . . . . . . . . . . . 63
Composition . . . . . . . . . . . . . . . . . . . . . . .63
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .63
M3 (developing) control. . . . . . . . . . . . . . . 63
Developing bias control. . . . . . . . . . . . . . .64
Dmax (maximum contrast) control . . . . . .65
Gradation correction control . . . . . . . . . . .67
Dot diameter correction control. . . . . . . . .68
Toner density control. . . . . . . . . . . . . . . . .69
FM4 (developing suction) control . . . . . . .69
Toner supply unit. . . . . . . . . . . . . . . . . . . . . . . .70
Composition . . . . . . . . . . . . . . . . . . . . . . .70
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .70
Toner level detection control. . . . . . . . . . . 71
M12 (toner supply) control . . . . . . . . . . . .72
Cleaning/toner recycle unit . . . . . . . . . . . . . . . .73
Composition . . . . . . . . . . . . . . . . . . . . . . .73
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .73
Toner guide roller (TGR) control . . . . . . . . 74
Other control . . . . . . . . . . . . . . . . . . . . . . .74
Tray 2/3 paper feed unit . . . . . . . . . . . . . . . . . .75
Composition . . . . . . . . . . . . . . . . . . . . . . .75
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .75
First paper feed control. . . . . . . . . . . . . . .77
Paper up drive control. . . . . . . . . . . . . . . .79
Paper size detection control . . . . . . . . . . .80
No paper detection control . . . . . . . . . . . . 81
Tray 4 paper feed unit. . . . . . . . . . . . . . . . . . . . 82
Composition . . . . . . . . . . . . . . . . . . . . . . .82
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .82
First paper feed control. . . . . . . . . . . . . . .84
Paper up drive control. . . . . . . . . . . . . . . .86
Paper size detection control . . . . . . . . . . .87
No paper detection control . . . . . . . . . . . . 87
Tray 1 (bypass tray) . . . . . . . . . . . . . . . . . . . . . 89
Composition . . . . . . . . . . . . . . . . . . . . . . .89
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .89
First paper feed control. . . . . . . . . . . . . . .90
Paper up/down control . . . . . . . . . . . . . . .90
Paper size detection control . . . . . . . . . . .91
No paper detection control . . . . . . . . . . . . 92
Vertical conveyance section . . . . . . . . . . . . . . . 93
Composition . . . . . . . . . . . . . . . . . . . . . . .93
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .93
Vertical conveyance control . . . . . . . . . . . 93
Automatic duplex unit (ADU). . . . . . . . . . . . . . .95
Composition . . . . . . . . . . . . . . . . . . . . . . .95
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .96
Loop/second paper feed control . . . . . . .101
Paper conveyance control. . . . . . . . . . . .103
Paper reverse and exit control . . . . . . . . 104
ADF paper conveyance/feed control . . . 108
Fuser unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Composition . . . . . . . . . . . . . . . . . . . . . . 111
Mechanisms . . . . . . . . . . . . . . . . . . . . . . 111
M16 (web drive) control . . . . . . . . . . . . . 113
Fuser temperature control . . . . . . . . . . . 114
Other kinds of control . . . . . . . . . . . . . . . . . . . 116
Parts energized when SW1 (main
power) is off . . . . . . . . . . . . . . . . . . 116
Parts that operate when SW1 (main
power)/SW2 (secondary power)
is on . . . . . . . . . . . . . . . . . . . . . . . . 117
Cooling fan control . . . . . . . . . . . . . . . . . 118
Control panel control. . . . . . . . . . . . . . . . 122
Counter control . . . . . . . . . . . . . . . . . . . . 124
Option control . . . . . . . . . . . . . . . . . . . . . 126
5 MFP disassembly/assembly
External section . . . . . . . . . . . . . . . . . . . . . . . 132
Replacing the ozone filter. . . . . . . . . . . . 132
Replacing the developing suction filter . . 133
Removing and reinstalling the
external covers . . . . . . . . . . . . . . . . 133
Changing the control panel
attachment angle and
removing/reinstalling. . . . . . . . . . . . 136
Resetting the circuit breaker. . . . . . . . . . 137
Drive section. . . . . . . . . . . . . . . . . . . . . . . . . . 138
Removing and reinstalling the drum
motor (M2) . . . . . . . . . . . . . . . . . . . 138
Removing and reinstalling the fusing
input gear . . . . . . . . . . . . . . . . . . . . 140
Scanner section . . . . . . . . . . . . . . . . . . . . . . . 141
Screws that must not be removed . . . . . 141
Removing and reinstalling the CCD
unit . . . . . . . . . . . . . . . . . . . . . . . . . 141
Replacing the exposure lamp . . . . . . . . . 142
Removing and reinstalling the
exposure unit . . . . . . . . . . . . . . . . . 143
Installing the optics wire . . . . . . . . . . . . . 145
Cleaning the ADF glass and scanner
glass . . . . . . . . . . . . . . . . . . . . . . . . 147
Replacing the scanner motor (M11) . . . 148
Laser scanner unit . . . . . . . . . . . . . . . . . . . . . 150
Removing and reinstalling the laser/
scanner assembly. . . . . . . . . . . . . . 150
Cleaning the dust-proof glass. . . . . . . . . 151
Drum unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Removing and reinstalling the drum
unit . . . . . . . . . . . . . . . . . . . . . . . . . 152
Installing the coupling . . . . . . . . . . . . . . . 154