Lexmark C 950 Service Manual

Repair information 4-127
  5058-030
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4.Remove the operator panel from the machine.
5.Disconnect the four cables (C) from the operator panel.
6.Release the harnesses from the clamp (D).
Operator panel PCBA (SFP) removal
1.Remove the operator panel front cover. See “Operator panel front cover (SFP)” on page 4-8.
2.Remove the operator panel. See “Operator panel assembly (SFP) removal” on page 4-126. 

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3.Remove the five screws (A) securing the operator panel PCBA to the machine. 
4.Gently lift the plastic lock by the two tabs (B). 

Repair information 4-129
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5.Disconnect the ribbon cable from the operator panel PCBA.
6.Remove the operator panel PCBA.
Operator panel speaker (SFP) removal
1.Remove the operator panel front cover. See “Operator panel front cover (SFP)” on page 4-8.
2.Remove the operator panel. See “Operator panel assembly (SFP) removal” on page 4-126. 

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3.Remove the three screws (A) securing the bracket to the machine.
4.Remove the bracket. 

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5.Remove the operator panel speaker.
PC smart chip socket (C, M, Y, K) removal
1.Remove the printer front door. See “Printer front door removal” on page 4-10.
2.Remove the transfer belt cleaner. See “Transfer belt cleaner removal” on page 4-175.
3.Remove the waste toner box.
4.Remove the four photoconductor units.
5.Remove the four toner supplies.
6.Remove the operator panel front cover. 
7.Remove the printhead retract door. See “Printhead retract...

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10.Using a flat-blade screwdriver, pry the plastic cover off the socket and remove.
11.Pull the PC smart chip socket and remove.
1
2 

Repair information 4-133
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PC/developer drive motor cooling fan removal
1.Remove the rear upper cover. See “Rear upper cover removal” on page 4-16.
2.Disconnect the input option cable (A).
3.Remove the eight screws (B) securing the PCBA door to the machine. 

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4.Release the two clamps (C) to release the harness.
5.Swing the PCBA door open.
6.Remove the developer HVPS PCBA. See “Developer HVPS PCBA removal” on page 4-72.
7.Remove the two screws (D) securing the PC/developer drive motor cooling fan to the machine.
8.Disconnect the cable (E).
9.Remove the PC/developer drive motor cooling fan. 

Repair information 4-135
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PC/developer drive motor removal
1.Remove the rear upper cover. See “Rear upper cover removal” on page 4-16.
2.Disconnect the input option cable (A).
3.Remove the eight screws (B) securing the PCBA door to the machine. 

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4.Release the two clamps (C) to release the harness.
5.Swing the PCBA door open.
6.Remove the transfer roll HVPS PCBA. See the “Transfer roll HVPS PCBA removal” on page 4-178 
section.
7.Remove the developer HVPS PCBA. See the “Developer HVPS PCBA removal” on page 4-72 section.
8.Remove the two screws (D) securing the bracket to the machine.
9.Remove the bracket.
Warning: When disconnecting the two wire harnesses from the motors, make sure that the...