Lexmark C540 Maintenance Manual

4Remove the toner cartridge by lifting the handle, and then gently pulling away from the imaging kit.
5Align the new toner cartridge, and then press down until it is all the way into the slot.
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21 

6Close the top door.Replacing a developer unit
Replace a developer unit when a print quality defect occurs or when damage occurs to the printer.
Note: When a developer unit is replaced, you must manually calibrate the color. For more information, see color-
misregistration-topic.
1Grasp the front door at the side handholds, and then pull it toward you to open it.
CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot
component, allow the surface to cool...

3Remove the toner cartridges by lifting the handles and then gently pulling away from the imaging kit.
4Remove the right side cover.
5Press the green levers on each side of the waste toner bottle, and then remove it.
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23 

6Lift the blue levers on the imaging kit, and then pull it toward you.
7Press down on the blue levers, grasp the handles on the sides, and then pull the imaging kit out.
Warning—Potential Damage: Do not touch the underside of the imaging kit. This could damage the imaging kit.
8Remove the used developer unit.
9Place the used developer in the enclosed package. For more information, see recycling-lexmark-
products-topic.
10Unpack the replacement developer unit.
Leave the packaging on the developer unit....

12Remove the red shipping cover from the developer unit.
13Insert the developer unit.
14Align and insert the imaging kit.
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25 

15Replace the waste toner bottle.
16Replace the right side cover.
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26 

17Replace the toner cartridges.
18Close the top door.
19Close the front door.
Cleaning the exterior of the printer
1Make sure that the printer is turned off and unplugged from the wall outlet.
CAUTION—SHOCK HAZARD: To avoid the risk of electric shock when cleaning the exterior of the printer,
unplug the power cord from the wall outlet and disconnect all cables from the printer before proceeding.
2Remove paper from the standard exit tray.
3Dampen a clean, lint-free cloth with water.
Warning—Potential...

4Wipe only the outside of the printer, making sure to include the standard exit tray.Warning—Potential Damage: Using a damp cloth to clean the interior may cause damage to your printer.
5Make sure the standard exit tray is dry before beginning a new print job.
Moving the printer
Before moving the printerCAUTION—POTENTIAL INJURY: The printer weight is greater than 18 kg (40 lb) and requires two or more trained
personnel to move it safely.
CAUTION—POTENTIAL INJURY: Before moving the printer, follow these...