Lexmark C734dn User Manual page 140

11
Close the front door.
Note: Make sure each cartridge is fully pushed in. If a cartridge is not installed correctly, the printer may issue a
<color> Cartridge Missing message, where <color> is Black, Cyan, Magenta, or Yellow. The printer
may also issue the message Close front door.
If either of these messages appears, follow these steps to clear the printer control panel message and continue
printing:
1
Open the front door.
2
Remove the specified cartridge.
3
Reinstall the specified cartridge.
4
Close the front door.
5
Check the printer control panel to see if it is clear of messages.
6
Repeat as needed for additional toner cartridge replacement.
Maintaining the printer
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