Lexmark C 746 Service Manual

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Bin full sensor flag removal
1.Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-54.
2.Turn the top access cover over, and use a flatblade screwdriver to carefully remove the flag (A).
Bin full sensor removal
See “Bin full sensor with cable” on page 7-3 for the part number.
1.Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-54. 
2.Turn the top access cover over, and press the side of the bin full sensor (A) to snap it loose from the cover.
3.Remove the bin full sensor and cable.
A
A 
						

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Cartridge cooling fan removal
1.Remove the top cover. See “Top cover assembly removal” on page 4-58.
2.Turn the top cover over, and remove the two screws (A).
3.Remove the cartridge cooling fan. 
						

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Cartridge motor 1/fuser cable removal
1.Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-119.
2.Disconnect the connectors in JCARTP1 (A) and JCARTS1 (B) on the system board.
3.Disconnect the connectors from the cartridge motor 1 (C) and the fuser motor (D). 
						

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4.Disconnect the camshaft cable connector (E) from the motor card, and unwind the two cables.
5.Remove the cable from the six retainers (F).
Installation notes:
•Make sure you wrap the camshaft cable around the cartridge motor 1/fuser cable, as shown, to prevent the 
cables from interfering with the motors and damaging the cables.
•Note the routing of the cables and the cable retainers. 
						

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Cartridge motor 2/3 cable removal
1.Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-119.
2.Disconnect the connectors in JCARTP2 (A) and JCARTS2 (B) on the system board.
3.Disconnect the connectors from the cartridge motor 2 (C) and cartridge motor 3 (D). 
						

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4.Remove the cable from the six retainers (E).
Installation note:  Pay attention to the routing of the cables and the cable retainers.
Color on demand assembly removal
1.Remove the fuser. See “Fuser removal” on page 4-110.
2.Remove the print cartridges.
3.Remove the top cover assembly. See “Top cover assembly removal” on page 4-58.
4.Disconnect the connector at JBOR1 (A) on the system board. 
						

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5.Remove the five screws (B).
6.Remove the COD assembly. 
						

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Installation notes:
1.Push the actuators (A) all the way down.
2.Turn the printer around, and verify the actuators are in the correct location by looking inside the front of the 
printer. The actuators (B) should be visible in the triangular holes in the frame, as shown.
A 
						

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3.Rotate the large COD gear until the stop (C) on the gear is against the housing.
4.Engage the gears on the left side of the COD.
C 
						

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5.Engage the gears (D) on the right side of the COD.
6.Replace the five screws (E).
7.Verify the actuators can be seen by looking inside the printer at the triangular holes, as in step 2.
8.Check to make sure you can rotate the large COD gear from stop to stop.
9.Reconnect the cable connector to JBOR1 connector on the system board.
10.Reinstall the top cover assembly, the fuser, and the covers.