4-48 Printer Service Manual
5057-XXX
K toner add assembly removal
Warning: Ensure the three CMY toner add assemblies are removed before removing the K toner add assembly, or
damage will occur.
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.
4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on
page 4-39.
5. Remove the sensor (waste toner cartridge full). See “Sensor (waste toner cartridge full) removal” on
page 4-40.
6. Remove the inner cover. See “Inner cover removal” on page 4-42.
7. Remove the three CMY toner add assemblies. See “CMY toner add assembly removal” on page 4-46.
8. Remove the screw securing the K toner add assembly (A) to the machine.
Warning: Pull the shutter to reduce toner spillage into the machine.
9. Remove the K toner add assembly (A).
Developer interlock plate assembly removal
Warning: Always perform color registration adjustment (RegCon) when removing or reinstalling the printhead,
NVM initialization, or developer interlock plate assembly. See “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: It is not required to remove the waste toner cartridge sensor assembly; allow it to loosely hang out of the
way.
4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on
page 4-39.
5. Remove the sensor (waste toner cartridge full). See “Sensor (waste toner cartridge full) removal” on
page 4-40.
6. Remove the inner cover. See “Inner cover removal” on page 4-42.
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