Lexmark W840 manual Xerographic Process During a Print Cycle, Safety system diagram

4024-XXX

Xerographic Process During a Print Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46

Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47

Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48

Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49

Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

Safety system diagram 3-53

Repair information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Handling ESD-sensitive parts		. 4-1
Removal procedures		. 4-2
Before starting service work		. 4-2
2X 500-sheet drawer (2TM) removals		. 4-3
2X	500-sheet drawer (2TM)—top cover removal	. 4-3
2X	500-sheet drawer (2TM)—foot cover removal	. 4-4
2X	500-sheet drawer (2TM)—right cover removal	. 4-4
2X	500-sheet drawer (2TM)—left cover removal	. 4-5
2X	500-sheet drawer (2TM)—rear cover removal	. 4-5
2X	500-sheet drawer (2TM)—2TM/TTM left door assembly removal	. 4-6
2X	500-sheet drawer (2TM)—caster removal	. 4-7
2X	500-sheet drawer (2TM)—switch (media size) assembly removal	. 4-8
2X	500-sheet drawer (2TM)—media feed unit assembly removal (tray 3)	. 4-9
2X	500-sheet drawer (2TM)—media feed unit assembly removal (tray 4)	4-11
2X	500-sheet drawer (2TM)—media tray guides removal	4-12
2X	500-sheet drawer (2TM)—media tray end guide removal	4-14
2X	500-sheet drawer (2TM)—tray lift gear group removal	4-16
2X	500-sheet drawer (2TM)—media feed lift motor removal	4-17
2X	500-sheet drawer (2TM)—lift coupling assembly removal	4-18
2X	500-sheet drawer (2TM)—tray lift one-way gear clutch assembly removal	4-19
2X	500-sheet drawer (2TM)—media feed unit drive gear - 13 tooth removal	4-21
2X	500-sheet drawer (2TM)—media out actuator removal	4-22
2X	500-sheet drawer (2TM)—sensor (media level) removal	4-23
2X	500-sheet drawer (2TM)—sensor (media out) removal	4-24
2X	500-sheet drawer (2TM)—sensor (pre-feed) removal	4-25
2X	500-sheet drawer (2TM)—media feed unit drive gear - 28 / 21 tooth removal	4-26
2X	500-sheet drawer (2TM)—media feed unit drive gear - 29 tooth removal	4-27
2X	500-sheet drawer (2TM)—feed roll removal	4-28
2X	500-sheet drawer (2TM)—feed roll one-way clutch removal	4-29
2X	500-sheet drawer (2TM)—feed roll one-way gear 22 tooth removal	4-30
2X	500-sheet drawer (2TM)—separation roll one-way friction clutch removal	4-31
2X	500-sheet drawer (2TM)—separation roll removal	4-32
2X	500-sheet drawer (2TM)—pick roll idler gear - 33 tooth removal	4-33
2X	500-sheet drawer (2TM)—pick roll removal	4-34
2X	500-sheet drawer (2TM)—pick roll drive gear 25 tooth removal	4-35
2X	500-sheet drawer (2TM)—feed unit drive gear - 27 tooth removal	4-36
2X	500-sheet drawer (2TM)—sensor (tray 3 feed-out) removal	4-37
2X	500-sheet drawer (2TM)—sensor (tray 4 feed-out) removal	4-38
2X	500-sheet drawer (2TM)—upper media transport roll removal	4-39
2X	500-sheet drawer (2TM)—lower media transport roll assembly removal	4-40
2X	500-sheet drawer (2TM)—left door pinch roll assembly removal	4-41
2X	500-sheet drawer (2TM)—switch (2TM/TTM left door interlock) removal	4-42
2X	500-sheet drawer (2TM)—2TM/TTM controller card assembly removal	4-43
2X	500-sheet drawer (2TM)—transport clutch removal	4-44
2X	500-sheet drawer (2TM)—drive motor assembly removal	4-45

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