Re: Clearing message after "replace photoconductor kit"...
To reset the photoconductor page count:
Turn off the printer.
While the printer is off, press and hold the Select () and Return () buttons on the operator panel.
While keeping both buttons held down, turn the printer back on.
Keep holding down both buttons until the printer screen displays Performing Self Test or CONFIG MENU.
Release the buttons when you see either of these messages.
If Reset PC Cnt does not then appear on the screen, press the left or riClearing message after "replace photoconductor kit - pattlnk_1262005_2017-enus21096_oppanelbuttons2_e340e342_en_us.gifya.net/uploads/images/pattlnk_1262005_2017-enus21096_oppanelbuttons2_e340e342_en_us.gif" alt="pattlnk_1262005_2017-enus21096_oppanelbuttons2_e340e342_en_us.gif" class="h_mi" />
Press the Select button once. The message Resetting PC Cnt Value should briefly appear on the screen, indicating that the photoconductor page count has been reset.
When the display shows CONFIG MENU again, power off the printer.
Wait five or more seconds and then power the printer back on. NOTE: Do not hold any buttons down when powering on the printer during this step.
The photoconductor page count should now be reset. At this point, it is recommended that you print a menu settings page to confirm this. Do the following:
With the printer at the Ready status, press the left or right Menu button until UTILITIES MENU appears on the screen.
With UTILITIES MENU on the screen, press the Select button once. A new menu should appear.
If Print Menus is not displayed on the second line of the screen, press the left or right menu button until Print Menus appears.
Press the Select button once. The message Printing Menu Settings should appear on the screen and the printer will print out one to three pages of printer settings.
Look for a heading labeled Cartridge Information on one of the menu settings pages.
Under Cartridge Information, look for the word Photoconductor. Confirm that the level of the photoconductor says OK or is close to 100%.
If the photoconductor is still reading low, try printing 10 - 20 more pages.
Print the menu settings page(s) once more. Confirm that the photoconductor level is now at OK or close to 100%.
If the photoconductor continues to give a low reading, repeat this
entire procedure again from the beginning to reset the counter once
If the photoconductor reading is still low after two attempts to reset the counter, the printer may require service.
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The replacephotoconductor message should be cleared only when the photoconductor kit has been replaced. If PC kit is new and still getting samemessage, please reset the photoconductor counter to zero.
For further assistance,please contact Lexmark Technical Support
The light is second to the right is Toner Low. If ! and toner low displays a flashing light it means that the photoconductor kit is full and must be replaced. The printer will not print any more pages until the photoconductor kit is replaced.
Press and release Continue button to print a photoconductor kit instruction page. If the light is still blinking, replace the photoconductor kit.
For further assistance, please call Lexmark Technical Support.
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: images.lexmark.com/publications/pdfs/w840/eng/ug.pdf
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
84 PC Life Exhausted indicates that the photoconductor unit has reached its functional life. The photoconductor kit will need to be replaced. The printer will not function so long as the Exhausted message remains on the display. The only way to clear the message is to install a new photoconductor. After replacing the photoconductor unit, you need to manually reset the pc page counter as well. Thank you for choosing Lexmark.
After replacing the photoconductor kit, you will need to reset the photoconductor page count. Here's the link for instructions on how to reset the page count: http://bit.ly/agYtVo . Or simply press and hold the CANCEL button while the printer is on and the front cover open until all lights are flashing. Hope this helps. If you need more assistance, leave a comment and I'll get back to it. Thanks.
According to Lexmark E450DN service manual; 1. Turn off the printer. 2. Press and hold Checkmark and Right Arrow buttons. 3. Turn on the printer. 4. Release the buttons when 'Performing Self Test' displays. The message CONFIG MENU displays on top line of operator panel. 5. Scroll down and select 'Reset PC Cnt.'
To reset this error, open the front door then press the cancel button for 3 seconds - all lights will cycle, close the front cover. The counter is now reset You should of had some instructions that came with the new photoconductor kit that shows you how to do this.
Hope this helps.