Lexmark X940e Owners Manual
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General information1-69 7510 Go Back Previous Next This sensor detects by the actuator position whether media in the media tray assembly is lifted. When the flag of the actuator leaves the sensor (media level) sensing area, the sensor detects that the media has been lifted. Main components Switch (tray module left door interlock) The switch (tray module left door interlock) detects open/close of the tray module left door assembly. Sensor (tray 2 feed-out) The sensor (tray 2 feed-out) detects media fed from trays 2, 3, or 4. Sensor (tray 3 feed-out) The sensor (tray 3 feed-out) detects media fed from the tray 3 or tray 4. Sensor (tray 4 feed-out) The sensor (tray 4 feed-out) detects media fed from the tray 4. Tray module media transport roll assembly
1-70Service Manual 7510 Go Back Previous Next The tray module transport roll assembly feeds media from the tray 3 or tray 4 to the printer. Tray module drive motor This motor is used to drive the media transport mechanism in the tray module. 3TM controller card assembly The 3TM controller card assembly, which contains a CPU, controls media feed in the tandem tray module upon receiving a command from the upper printer engine card assembly and sensor/switch information.
General information1-71 7510 Go Back Previous Next Switch (media size) The following table gives on/off states of the switches on the switch (media size), corresponding to the media sizes of the media tray assembly. Note: The switches (media size) are denoted by “S/W1” and “S/W3” respectively from the left side. Media SizeAnalog switch S/W1 S/W3 No Tray Off Off B5L/7.25” x 10.5”L Off On 8.5” x 11”L On Off A4L On On
1-72Service Manual 7510 Go Back Previous Next 1TM theory
General information1-73 7510 Go Back Previous Next Media transport Media transport path Media is supplied from tray 3 or tray 4, and is transported to the printer along the media transport path shown below. Pick rollPick roll Separation rollSeparation roll Feed roll Transfer belt 2nd transfer roll assembly Heat roll Pressure roll Fuser unit ASM Standard media exit roll assembly Duplex media transport roll ASM Duplex mediaCenter transport roll ASM Tray 3Tray 4 Feed roll Tray module media Transport roll ASM Media transport roll ASM Registration roll ASM Standard media exit Pick roll Separation roll Feed rollTray 2
1-74Service Manual 7510 Go Back Previous Next Media transport path The following is a cross section of the printer and the 1TM, showing the main components directly associated with the media path and transport. Functions of main components When the 1TM is installed under the printer, additional trays are available. Media tray assembly It is necessary to adjust the rear and the end guide in the media tray assembly to match the media size. Rear media guide The rear media guide can be adjusted to different media sizes by moving it to the front or rear. The guide comes into contact with the rear edge of the media and holds it in position. Bottom plate Tr a y 2 1TM (optional) Media transport roll assembly Tr a y 2 Tr a y 3 Tr a y 4 ADF and Scanner MPF Tr a y 1 Tr a y 2 Tr a y 3Tr a y 4 3TM (optional) Finisher (optional) Booklet maker unit (optional) Standard media exit roll assembly Fuser exit roll assembly Duplex media transport roll assembly 2nd transfer roll assembly Bridge unit assembly (included with finisher) Tray module transport roll assembly TTM Pick roll Feed roll Separation roll Registration roll assembly Tray module transport roll assembly MPF pick roll Tray 4 transport roll assembly Finisher media entrance roll assembly Upper media exit roll assembly Upper media transport roll assembly Buffer roll assembly Lower media exit roll assembly Booklet media transport roll assembly Booklet media entrance roll assembly Booklet media exit roll assembly Booklet folding roll assembly Media eject roll assembly Fuser Bridge unit bin exit roll assembly
General information1-75 7510 Go Back Previous Next The force pushing up the bottom plate is transmitted by the driving force of the motor on the media feed unit assembly. The bottom plate is pushed up by the rotation of the lift up shaft, which causes the supplied media to come in contact with the pick roll. Tray 2 media tray assembly 1TM media feed units Media feed unit assembly The media feed unit assembly is a mechanical unit supplying media from the media tray assembly to the printer. The driving force from the media feed lift motor on the media feed unit assembly is transmitted to the three roll assemblies to feed media. When the pick roll picks up sheets of media and the remaining media decreases, the media level actuator of the sensor (media level) lowers accordingly. Media feed lift motor The media feed lift motor is activated to feed media and to lift the bottom plate. While feeding media, it rotates forward to drive the pick roll. When lifting the bottom plate, it rotates in reverse to drive the tray module gears to turn the lift up shaft. Rear media guide Bottom plate End guide
1-76Service Manual 7510 Go Back Previous Next Switch (media size) The switch (media size) switches the setting of the size of media supplied from each media tray assembly. A signal indicating the set size is transmitted as a voltage to the printer engine card assembly. Sensor (media out) If there is no media in the media tray assembly, the media out actuator lowers and the flag of the media out actuator that has stayed in the sensor (media out) sensing area leaves there. Thus, the light of the sensor is transmitted. When the sensing area is blocked (media is present), the signal turns off. Sensor (media level) This sensor detects by the actuator position whether media in the media tray assembly is lifted. When the flag of the actuator leaves the sensor (media level) sensing area, the sensor detects that the media has been lifted. Main components Switch (tray module left door interlock) The switch (tray module left door interlock) detects open/close of the tray module left door assembly.
General information1-77 7510 Go Back Previous Next Sensor (tray 2 feed-out) The sensor (tray 2 feed-out) detects media fed from the tray 2. Tray module media transport roll assembly The tray module transport roll assembly feeds media from the tray 2. Tray module drive motor This motor is used to drive the media transport mechanism in the tray module. 1TM controller card assembly The 1TM controller card assembly, which contains a CPU, controls media feed in the 1TM upon receiving a command from the upper printer engine card assembly and sensor/switch information.
1-78Service Manual 7510 Go Back Previous Next Switch (media size) The following table gives on/off states of the switches on the switch (media size), corresponding to the media sizes of the media tray assembly. Note: The switches (media size) are denoted by “S/W1” and “S/W3” respectively from the left side. Media SizeAnalog switch S/W1 S/W3 No Tray Off Off B5L/7.25” x 10.5”L Off On 8.5” x 11”L On Off A4L On On