Lexmark C736 Service Manual

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Cover removals
Front access cover assembly removal
See Front access door cover assembly for the part number for the models you need on page 7-3.
1.Remove the paper tray.
2.Disconnect the transfer module cable (A). 
3.Press the two tabs (B) to release the front access door cover assembly.
4.Press the two tabs (C) on either side of the transfer module, and lift out the transfer module.
Note:  Leave the photoconductor units on the transport belt when...

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5.Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward 
through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side.
DF E 

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6.Close the front access door assembly.
7.Remove the two screws (G) that attach the pivot pin to the front access door cover assembly.
8.Remove the bracket (H).
9.Remove the front access cover assembly.
Left cover removal
See “Left cover” on page 7-3 for the part number.
1.Remove the paper tray.
2.Remove the waste toner assembly. See “Waste toner assembly removal” on page 4-174. 
3.Open the front access door.
4.Open the top access door.
5.Remove the two...

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7.Remove the screws (D) from the rear left cover.
8.Lift, and remove the left cover and rear left cover together.
Note:  Because the paper tray dust cover is loose at this point, set it aside.
Note:  If you are removing the left cover to access another part, leave the left cover and the rear left cover 
attached, and you are done. If you need to replace the left cover FRU, continue with the next step to remove the 
separate rear left cover FRU. 

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9.Separate the left cover and rear left cover by sliding the left rear cover as shown to disengage the latch (E). 

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Operator panel assembly removal
See “Operator panel assembly, with card” on page 7-3 for the part number. 
Warning:  When replacing any one of the following components:
•Operator panel assembly
•System board
•Top access cover assembly
Only replace one component at a time. Replace the required component, and perform a POR before 
replacing a second component listed above. If this procedure is not followed, the printer will be 
rendered inoperable. 
1.Remove...

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4.Remove the four screws (B) from the operator panel card.
Note:  Observe the position of the ground cable (C).
5.Disconnect the operator panel cable (D).
D 

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6.Gently turn the operator panel card over, and disconnect both display cables (E).
Note:  The ribbon cable has a latch (F) that needs to be lifted to disconnect the cable.
7.Turn the top access cover assembly over.
8.Gently use a flathead screwdriver to pry out the lens from the bezel back cover.
GH 

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9.Remove the display from the lens.
Note:  The operator panel assembly consist of the display and the operator panel card. 

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Operator panel bezel removal
See Operator panel bezel on page 7-3 for the part number.
1.Open the front cover.
2.Rotate the operator panel to its highest position.
3.Using a flathead screwdriver or similar tool, unsnap the locking tabs on the upper left and the upper right of 
the bezel. The tabs on the right and left side will then release.
4.Rotate the bezel down, and remove the bezel.
Installation note: When reinstalling or replacing the bezel, insert...