Lexmark C91 Series, Service Manual

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I-6
Service Manual
5055-xxx
separation fingers 4-14
stay arm 4-51
sub-frame 4-52
temperature/humidity sensor 4-54
top unit 4-55
transfer belt
inoperable operator panel 4-60
normal removal 4-56
partially removed 4-64
unrecoverable error code 4-60
turn guide cover sensor 4-65
upper fan 4-66
repair information
handling printed circuit boards 4-1
service precautions 4-1
S
safety information 1-xi
sensors
belt up/down detection 4-11
density 4-14
drive gear unit 4-15
finisher, functions 3-64
high-capacity feeder paper end
sensor removal
4-84
high-capacity feeder paper level
4-87
high-capacity feeder paper size
sensors (1, 2) removal
4-84
humidity 4-54
locations 5-4
multipurpose feeder paper present
4-33
paper full 4-18
paper remaining 4-39
paper size sensor board assembly
4-39
sensor board 4-50
temperature 4-54
turn guide cover 4-65
serial number 1-32
,
3-29
service checks 2-68
drive 1 DC motor 2-68
drive 2 stepper motor 2-68
duplex 2-69
expansion paper feed 2-69
face down stacker full 2-70
face up exit assembly 2-82
high capacity feeder (HCF) 2-70
marks on paper 2-72
operator panel 2-73
options 2-98
paper carrying 2-74
paper exit, face up exit assembly
2-82
paper tray missing 2-83
photodeveloper missing 2-84
power supply 2-85
serial port 2-98
transfer belt up/down 2-87
service communication 2-16
service error
tray elevator motor 2-32
900 - unrecoverable software error
2-4
910 - drive motor error 2-4
911 - paper exit motor error 2-5
912 - high capacity feed motor error
2-5
917 - RIP fan error 2-5
918 - main unit fan error 2-6
919 - power supply fan error 2-6
92x - toner sensor error 2-9
920 - fuser error - fuser heater
trouble
2-6
923 - upper fuser thermistor open
error
2-7
924 - lower fuser thermistor open
error
2-7
925 - HVU error 2-8
930 - printhead error, yellow 2-10
931 - printhead error, magenta
2-11
932 - printhead error, yellow 2-12
933 - printhead error, black 2-13
934 - drum sensor, color 2-14
935 - drum sensor, black 2-14
936-9 - cassette error 2-15