Lexmark C 950 Service Manual

Repair information 4-107
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Warning:  When removing the lower redrive shift motor assembly, ensure that the front bushing (H) does not 
become damaged.
18.Gently remove the lower redrive shift motor assembly. 

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19.Remove the drive belt.
Re-installation tip: To make the reinstallation of the lower redrive shift motor assembly easier, ensure that the 
drive belt is placed on the lower redrive shift motor assembly drive pulley and that the plastic motor cover is 
attached to the lower redrive shift motor assembly as you reattach it to the machine. This will prevent the drive 
belt from slipping. After you have reattached the lower redrive shift motor assembly...

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5.Pull out the LVPS front fan guide.
6.Disconnect the cable (B) from the LVPS front fan guide.
7.Detach the harness from the LVPS front fan guide.
8.Remove the LVPS front fan guide.
LVPS PCBA removal
1.Remove the printer right side cover. See “Printer right cover removal” on page 4-11.
2.Remove the LVPS subfan guide. See “LVPS front fan guide removal” on page 4-108.
3.Remove the waste toner sensor guide. See “Waste toner sensor guide removal” on...

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4.Remove the harnesses from the nine clamps (A) under the LVPS PCBA.
5.Disconnect the twelve cables (B) from the LVPS PCBA. 

Repair information 4-111
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6.Remove the four screws securing the LVPS PCBA to the machine. 
7.Remove the LVPS.
Re-installation warning: When replacing the LVPS PCBA, ensure that the connections for P91 and P92 are 
properly replaced. If the cables are not reconnected properly, damage will occur to the machine, and the 
machine will not function. 

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LVPS sub cooling fan removal
1.Remove the printer right cover. 
2.Remove the two screws (A) securing the LVPS fan guide to the machine.
3.Remove the LVPS fan guide.
4.Disconnect the cable (B). 

Repair information 4-113
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5.Release the two hooks securing the fan to the guide.
6.Remove the LVPS sub cooling fan.
M toner auger 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...

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10.Lift the plastic gate, and push it in to prevent the toner from spilling.
11.Squeeze the two latches (A) to release the upper part of the auger.
12.Detach the lower portion (B) of the auger from the developer unit.
1
2 

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Warning:  The lower portion of the auger (B) is prone to damage. Extra care is required in handling this part.
13.Remove the M toner auger.
Re-installation note: Ensure that the rubber sleeve (C) is attached properly to prevent toner spillage. 
A
B
C 

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Main power GFI interface 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.