Replace pc unit problem on Lexmark W840 Laser Printer

The PC kit is removed by grapping the handle on the toner cartridge and pulling up and out. Then press the grey button under the toner handle to remove the toner cartridge from the PC (photo conductor) unit. Install new PC unit in printer and install the toner into the PC unit. Check instructions with PC unit for reset instructions for the page counter.

please reset momery of printer

The PC (photo conductor) cartridge motor does not rotate at the specified speed.

Check the PC cartridge for installation.
Is the PC cartridge installed securely?

Check the dual drive motor assembly for operation.

Open the rear motor cover and check it.

1. Enter Diagnostics mode.

2. Select MOTOR TESTS.

3. Select Drum unit motor.
Does the motor rotate normally.

Check the dual drive motor assembly for installation.

Open the rear motor cover and check it.
Is the dual drive motor assembly installed securely?

Check the rotation of the rotor in the dual drive motor

assembly.

Open the rear motor cover and check it.

Can the rotor be rotated by hand without excessive load?

Check the dual drive motor assembly connection.
Is the dual drive motor assembly properly connected?

The PC cartridge needs to be replaced. If you have just installed a new unit, please check if the PC cartridge is installed securely.

For further assistance please contact Lexmark Technical Support.

PC life warning indicates that the photoconductor has nearly reached its expected life rating. You can still continue printing but will be at risk for developing print quality issues. It is advisable that pc unit be replaced. Now, when you replace the pc unit you will also need to manually reset the pc page counter as well. Thank you for choosing Lexmark.

This error usually requires service. But try another known working pc unit or a new one. The problem can be the pc unit or the pc cartridge sensor. If problem continues after replacing pc unit, I strongly suggest you contact Lexmark technical support or an authorized service provider for assitance. Thank you for choosing Lexmark.

Go to this link for the instructions
http://support.lexmark.com/index?page=content&id=HO2348&actp=search&viewlocale=en_US&userlocale=EN_US&segment=SUPPORT&productCode=LEXMARK_W840&searchid=1264610341725

Hi, I believe you will have to replace the PC units pretty soon, Here is an article that explains the process pretty good, plus it gives you the step by step guide on how to reset the PC units once the new ones are installed.
http://bit.ly/b0bndZ

Hi! In your case, did you open already your printing?. Because there's still particles left in your printer, usually in the heater roller. consulting to a printer technician is the best way to solve this. GOOD LUCK, thanks

Try reset .

Unplug the unit from power chord for 30 minutes and plug back the power chord to the unit .
This will reset your unit .