Lexmark C736 Service Manual

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11.Press the two tabs (F) to separate the right cover from the rear right cover.
F 

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Top access cover assembly removal
See “Top access cover assembly” 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 the rear...

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5.Disconnect the two screws (D), one on either side of the printer, that connects the links.
6.Extract the cables (E).
D 

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7.Slide the top access cover to the rear, and remove.
Note:  If you are removing the top access cover assembly to access another FRU, then leave the operator panel 
bezel attached, and you are done. If you are replacing the top access cover assembly FRU, then continue with 
the next step to disconnect the separate operator panel bezel FRU.
8.Remove the operator panel bezel. See “Operator panel bezel removal” on page 4-28. 

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Top cover assembly removal
1.Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-112.
2.Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-40. 
3.Disconnect the connectors in JBLW1 (A), JFUSER1 (B), JFAN1 (C) on the system board.
4.Pull the cables through the openings.
Note:  Be sure to observe the routing for the cables. 

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5.Remove the fuser AC cable from the cable restraint (D).
6.Remove the five screws (E).
7.Lift off the top cover assembly.
EE 

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Printer removals
5 V interlock switch cable removal
See “5 V interlock switch” on page 7-7 for the part number.
1.Remove the EP drive assembly. See “Electrophotographic (EP) drive assembly removal” on 
page 4-82.
2.Disconnect the connector at JINT1 (A) on the system board. 

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3.Open the front access door cover, and remove the screw (B).
4.Remove the cable from the two cable retainers (C).
B 

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5.Remove the 5 V interlock switch and bracket from the printer.
6.Remove the screw (D), and remove the 5 V interlock switch cable from the bracket.
24 V interlock switch removal
See “24 V interlock switch” on page 7-7 for the part number.
1.Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-112.
2.Disconnect the connector at JCVR1 (A) at system board. 

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3.Remove the screw (B), and the bracket separates from the 24 V interlock switch.
Installation notes:
Observe the routing of the 24 V interlock switch cable (C).