I-4 Service Manual
7541-03x
Duplex removal
4-63
Duplex solenoid removal 4-90
Engine board (MDCONT) 4-92
Exit guide (paper exit) roll removal 4-190
Fuser entry sensor removal 4-91
Fuser exit drive unit motor 4-93
Fuser Fan 4-92
handle cover removal 4-62
HVPS removal 4-111
LED assembly removal 4-29
LED print head removal 4-31
left cover removal 4-22
main fan removal 4-53
Modem 4-94
MPF clutch removal 4-174
MPF pad removal 4-187
MPF tray assembly removal 4-175
Option controller board removal 4-200
Option door inter lock switch removal 4-202
Paper empty sensor removal 4-199
paper exit guide removal 4-33
paper exit sensor removal 4-37
Paper feed clutch removal 4-203
Paper feed motor removal 4-110
Paper feed roll removal 4-196
paper feed unit removal 4-68
Paper full sensor removal 4-199
Paper level sensor removal 4-198
paper size sensor removal 4-42
Paper size switch removal 4-105
Paper size switches removal 4-197
Paperfeed roll removal 4-182
Paperfeed unit clutch removal 4-179
Papertray lift motor removal 4-94
photoconductor lock removal 4-43
Pick roll removal 4-182, 4-196
power supply fan removal 4-55
printhead controller board removal 4-37
Rear EMI shield – Not a FRU 4-106
Rear fan 4-102
Registration roll removal 4-184
Registration sensor (MPF tray) removal 4-179
Registration sensor actuator removal 4-180
RIP cage 4-95
Separator roll removal 4-183, 4-197
Static discharge brush removal 4-180
Stepper motor removal 4-200
Sub drive unit removal 4-84
Sub frame unit 4-104
Temperature and humidity sensor removal 4-101
theta sensor removal 4-56
Toner sensor removal 4-97
Torque limiter removal 4-181
Transfer belt motor removal 4-100
transfer belt position sensor removal 4-41
Transport sensor removal 4-198
Tray lift motor removal 4-201
Upper and lower registration springs removal 4-181
Waste toner sensor removal 4-112
removals
Back cave cover
4-18
Cord cover 4-6
Crossbar removal (not a FRU) 4-74
Drive unit 4-79
Drive unit motor C/M/Y/K 4-83
Front op panel cover 4-11
Fuser removal 4-61
Inner right cover 4-19
Left EMI shield removal (not a FRU) 4-45
Low volt power supply removal 4-51
Main switch 4-58
Op panel bottom cover 4-15
Op panel paper exit guide removal 4-32
Op panel top cover 4-13
Output bin (print engine top) cover 4-17
Output bin full sensor actuator removal 4-26
Rear cover 4-7
RIP board removal 4-73
RIP cover 4-5
Scanner power supply access cover 4-6
Scanner power supply removal 4-58
Speaker removal 4-25
Transfer belt – CRU 4-40
Transfer Roll - CRU 4-72
Upper right cover 4-16
Reports 3-11
Reset Calibration 3-25
Reset Calibration Values 3-20
RIP board removal 4-73
RIP board/operator panel replacement 4-2
RIP cage removal 4-95
S
safety information ii-xv
safety inspection guide 6-1
scanner
lock
2-35
Scanner Calibration Reset 3-28
Scanner power supply removal 4-58
Selecting paper 1-10
Sensor Test
SCANNER
3-28
Separator roll removal 4-183, 4-197
Serial Number 3-25
serial port service check 2-90
Serial Wrap Test 3-22
service check
840.03 service check
2-56
841.00 Invalid configuration or ASIC not found 2-56
841.01 Invalid AFE setting 2-56
841.02 Delayed interrupt detected 2-57
841.03 Failed indirect register test 2-57
841.05 Image pipe time-out 2-57
841.06 Scanner did not initiate scan 2-58
842.00 No response / 842.01 HW protocol / 842.02
Logical protocol
2-58
843.00 Carriage Home 2-59
844.00 Lamp failure (Front side) 2-59
849.01 Device had modem installed, but config ID
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