Lexmark T642 Service Manual - Page 411
Top Margin, theory of operation
UPC - 734646722001
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Page 411 highlights
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 4-76 outer 4-67 signature button contact assembly removal 4-75 specifications acoustics 1-7 dimensions 1-5 electrical 1-6 environment 1-7 media 1-8 memory configuration 1-4 operating clearances 1-4 power requirements 1-6 print media 1-15 resolution 1-3 speed and performance 1-3 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 4-76 service check 2-126 system code 3-1 4061-xx0 T theory of operation autocompensator 3-31 autoconnect cabling and connectors 3-32 duplex unit 3-32 option microcode 3-32 toner sensor removal 4-77 tools 1-19 Top Margin duplex 3-10 simplex (front side) 3-4 transfer roll assembly parts catalog 7-26 removal 4-77 service check 2-128 transparencies 1-16 tray linking 8-17 U unique tools 1-19 unsatisfactory papers 1-15 upper front cover parts catalog 7-2 removal 4-11 upper front cover hinge assembly removal 4-78 upper front cover latch removal 4-13 upper paper deflector 4-79 user attendance messages 2-32 user line 2 link messages 2-43 user status displays 2-31 V verify print 8-16 W warm up time 3-22 warning messages (user status displays) 2-31 wiper cover 4-4 wrap tests 3-8 Index I-7