Lexmark C 746 Service Manual

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6.Install the seven screws in the order shown below.
Install 1
(18B0832)stInstall 2
(88A0313)ndInstall 4
(18B0832)th
Install 3
()rd
27S2838 
						

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7.Use two screws (F) to attach the cleaner shutter actuator to the Waste toner HV contact assembly. Make 
sure the gear aligns as shown.
F (27S2838)
RibRibs aligned 
						

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8.Attach the eight springs (G) to the Waste toner HV contact assembly as shown. Make sure the springs are 
behind the retainers.
G
Retainer 
						

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9.Install the contact springs. When installing each contact spring, make sure the top half (H) of the spring is 
under the straight spring (J). This is typical for both types of springs. Also make sure that the bottom half 
(K,L) of both springs are compressed and locked by the appropriate locking tabs (M,N).
LKJ
M
HN 
						

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10.Connect the three top toner level sensor cables to the HVPS, making sure the cables (O) are attached 
properly to the retainers (P).
11.Reassemble the rest of the printer.
PO 
						

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Wireless network antenna removal
1.Remove the wireless network card. see “Wireless network card removal” on page 4-191.
2.Disconnect the wireless network antenna cable (A) from the wireless network card. 
3.With pliers, squeeze the inner tabs (B), and pull the antenna out.
4.Pull the cable through, and remove the antenna with the cable. 
						

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Wireless network card removal
1.Remove the rear frame cover. See “Rear frame cover removal” on page 4-47. 
2.Disconnect the wireless cable from the system board at J5 (A), by squeezing the tabs at either end 
together.
3.Remove the two screws (B) that secure the card into place. 
						

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4.Pop the posts (C) on the card from the sockets (holes) in the system board.
Note:  If you are removing the wireless network card to access another part, leave the antenna attached to the 
card, and you are done. If you need to replace the wireless network card FRU, continue with the next step to 
remove the separate wireless network antenna FRU.
5.Remove the wireless network antenna. See “Wireless network antenna removal” on page 4-190. 
						

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Option removals
HCIT media tray assembly removal
Note:  When removing the high-capacity input tray (HCIT) media tray assembly, it is not necessary to remove it 
from the base machine and the caster base.
1.Open the HCIT media tray assembly (A) until it reaches a stop.
2.Press the latches (B) on the left and right side of the HCIT tray slides.
3.Slide the HCIT media tray assembly out of the drawer.
B
B
A 
						

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HCIT front tray cover removal
Note:  When removing the high-capacity input tray (HCIT) front tray cover, it is not necessary to remove the 
HCIT media tray assembly from the base machine and the caster base.
1.Remove the HCIT media tray assembly. See “HCIT media tray assembly removal” on page 4-193.
2.Remove the six screws (A) securing the HCIT front tray cover to the media tray assembly.
3.Remove the HCIT front tray cover.