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Lexmark T640 - Page 412

Lexmark T640
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I-6 Service Manual
4061-xx0
MPF pick tire removal
4-63
MPF solenoid assembly 4-63
MPF lower front cover assembly 4-16
operator panel board removal 4-67
operator panel buttons 4-68
outer shield 4-69
paper alignment assembly 4-70
paper bin full sensor flag 4-71
paper size sensing board 4-72
power takeoff shaft and spring 4-73
printhead 4-74
redrive assembly 4-75
signature button contact assembly 4-76
system board 4-77
toner sensor 4-78
transfer roll assembly 4-78
upper front cover hinge assembly 4-79
upper paper deflector assembly 4-80
USB board assembly 4-80
repeat print 8-16
reserve print 8-16
right cover handle holder removal 4-17
right cover removal 4-9
S
safety information xvii
safety inspection guide 6-1
scheduled maintenance 6-1
sensors
fuser exit sensor
4-29
fuser narrow media sensor 4-35
input 4-49
output bin sensor, integrated paper tray 2-109
paper bin full 4-71
paper size sensing board 4-72
toner 4-78
serial number 3-20
serial wrap tests 3-9
service checks
5-bin mailbox
2-72
900.xx error code 2-75
927.xx fan 2-76
950.00 through 950.29 EPROM mismatch failure 2-77
charge roll 2-79
cover closed switch/cable 2-80
cover open switch/cable 2-80
dead machine 2-80
duplex option 2-82
envelope feeder 2-84
fuser 2-87
fuser exit sensor 2-92
fuser narrow media sensor 2-93
fuser solenoid 2-94
high-capacity feeder input tray 2-95
high-capacity output stacker 2-100
input sensor 2-102
input tray, optional 2-102
interconnect card 2-104
main drive 2-105
main fan 2-76
operator panel 2-106
options 2-108
output bin sensor 2-109
output expander 2-110
paper feed 2-112
paper size sensing board 2-113
parallel port 2-116
print quality 2-116
printhead 2-122
signature button assembly 2-122
StapleSmart finisher 2-123
system board 2-126
toner sensor 2-127
transfer roll 2-128
service error codes 2-8
shield
inner shield
4-77
outer 4-69
signature button contact assembly
removal
4-76
specifications
acoustics
1-8
dimensions 1-6
electrical 1-7
environment 1-8
media 1-9
memory configuration 1-5
operating clearances 1-5
power requirements 1-7
print media 1-16
resolution 1-4
speed and performance 1-4
StapleSmart finisher
locations
5-12
parts catalog 7-65, 7-66, 7-67, 7-68
service check 2-123
start 2-1
strobe adjustment 3-21
switch, cover closed 2-80
symptoms
base printer
2-5
duplex option 2-6
envelope feeder 2-6
high-capacity feeder 2-5
output expander option 2-6
paper trays 2-6
StapleSmart finisher 2-7
system board
connectors
5-1
parts catalog 7-30
removal 4-77
service check 2-126
system code 3-1

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