Lexmark C 746 Service Manual

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8.Remove the cable through the cable channel (F).
Transport motor cable removal
1.Remove the right cover. See “Right cover removal” on page 4-51.
2.Disconnect the cable from the transport motor drive (A).
3.Disconnect the cable from the transport motor (B).
4.Remove the cable. 
						

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Waste toner assembly removal
Not a FRU.
1.Press the waste toner release latch (A).
2.Swing the front of the waste toner assembly away from the printer, and remove.  
						

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Waste toner HV contact assembly removal
1.Disconnect the transfer module cable (A). 
2.Press the two tabs (B) to release the front access cover assembly.
3.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 removing. 
Warning:  To avoid damaging the photoconductor drum, place the transfer module with the 
photoconductor units on a clean surface. Never expose the photoconductor units to light for a prolonged 
period of time. Place a clean, dry cloth over the transfer module and photoconductor units until they are 
required.
4.Remove the left cover. See “Left cover removal” on page 4-31.
BC
A 
						

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5.Remove the six mounting screws (D) holding the HVPS in place.
6.Release the locking tab (E) from the front, lower corner of the HVPS.
D
E 
						

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7.Lay the board to the left.
8.Disconnect the three top toner level sensor cables (F) from the HVPS.
F 
						

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9.Remove the two screws (G). 
G (18B1236) 
						

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10.Remove the cleaner shutter actuator (H) from the waste toner HV contact assembly.
H 
						

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11.Remove the four screws (J), the two screws (K), and the screw (L). Tilt the Waste toner HV contact 
assembly forward and up to remove it.
J (18B0832)K (88A0313)L (27S2838) 
						

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Installation note:  Do the following procedures when re-installing the waste tone HV contact assembly:
1.Remove the fuser.
2.Remove all four toner cartridges
3.Remove the four sets of torsion springs. Remove the screw (A) and the spring cap (B) of the appropriate 
contact spring.
4.Press the lower half (C,D) of the springs, and remove the springs.
B A
D C 
						

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5.Install the waste toner HV contact assembly into place. Route the toner level sensor cables (E) through the 
holes in the waste toner HV contact assembly while positioning the assembly. Make sure the aligner shaft 
worm gear is aligned as shown.
E
Ribs aligned Rib