Question about Lexmark W840 Laser Printer

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Replace pc unit problem on Lexmark W840 Laser Printer

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Here is an excerpt I found from the W840 user manual. Looks like you need to change the photoconductor kit. Here is the link for the user manual:
To ensure print quality and to avoid damage to the printer, the printer stops operating after the photoconductor kit has reached approximately 60,000 pages (Letter/A4). The message 84 Replace PC Unit is displayed when the printer reaches this point. If the Toner Alarm setting is set to Single or Continuous (default is Off), the printer automatically notifies you before the photoconductor reaches this point and displays the message 84 PC Unit Life Warning. To avoid having the printer stop operating, replace the photoconductor kit when you first receive the 84 PC Unit Life Warning message. Once the photoconductor kit has been replaced, normal printer operation resumes

Posted on Apr 11, 2011


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How do I replace pc kit on Lexmark X 264dn

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.

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My W840 message : 9.12.00 Service Motor Error

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.
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Open the rear motor cover and check it.
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Jul 13, 2011 | Lexmark W840 Printer

2 Answers

I have a printer Lexmark W840. On the display there is a message "84 Replace PC unit" - what does mean?

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.

Feb 16, 2011 | Lexmark W840 Laser Printer

1 Answer

Pc life warning on Lexmark e360d printer. What does that mean

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.

Sep 20, 2010 | Lexmark E360d Laser Printer

1 Answer


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.

Aug 25, 2010 | Lexmark W840 Printer

1 Answer

C530dn lexmark PC Unit Life Warning

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.

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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

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1 Answer

Lexmark W480 jam in D

Try reset .

Unplug the unit from power chord for 30 minutes and plug back the power chord to the unit .
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