Lexmark C935 Series, Service Manual

Page: 355 / 630

Repair information
4-57
5057-XXX
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Developer carrier removal and replacement
Note: The following procedure can be applied to the C, M, Y, and K developer carriers.
Warning: Always perform the sensor (ATC sensor) setup and adjustment if required or print quality problems
may occur. Go to “Sensor (ATC) setup” on page 4-210 .
Warning: Always perform color registration adjustment (RegCon) when removing or reinstalling the printhead,
developer unit assembly or developer interlock plate assembly or print quality problems may occur. Go “Color
registration (RegCon)” on page 4-214 .
1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3 .
2. Remove the front left cover. See “Front left cover removal” on page 4-9 .
3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-39 .
Note: The waste toner cartridge sensor assembly does not need to be removed from the machine. It may be
allowed to hang by the wires.
4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal”
on page 4-39 .
5. Remove the inner cover. See “Inner cover removal” on page 4-42 .
6. Remove the three CMY toner add assemblies. See “CMY toner add assembly removal” on page 4-46 .
7. Remove the K toner add assembly. See “K toner add assembly removal” on page 4-48 .
8. Remove the developer interlock plate assembly. See “Developer interlock plate assembly removal” on
page 4-48
9. Remove the developer unit assembly. See “Developer unit assembly removal” on page 4-53 .
10. Using a prying tool, gently release the two hooks securing the top cover (A) to the assembly.