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Lexmark T640

Lexmark T640

Resetting the photoconductor page count

Issue description

This article includes instructions to reset the photoconductor page count. This is recommended at any time you replace the photoconductor unit, otherwise, the printer will not register the photoconductor replacement. The printer will continue to display an 84 - PC Kit life or a Photoconductor (PC) Life Warning message.

In addition, once the old, unreset photoconductor page count reaches a certain point, the printer will stop printing and display an 84 - Replace PC Kit or a Photoconductor Exhausted message.

Note:  For more information on these error messages and their meaning, see the section labeled Error messages located near the end of this article.

Solution

The photoconductor page count should be reset only when a completely new photoconductor kit is installed. Resetting the page count without replacing the photoconductor kit will cause the photoconductor to operate beyond its intended life and create print quality issues or possibly damage the printer.

To reset the photoconductor page count:

  1. After installing the new photoconductor unit, open the front cover. Leave the printer powered on. Click here for an illustration.

  2. With the front cover open, press and hold the stop/cancel button.

  3. Watch the LCD screen. When you see the message " Resetting PC Counter", let go of the button.

  4. Close the front cover.

    Note:  If you wish to confirm that the photoconductor page count has reset, print a menu settings page.

    • With the printer at the ready state, press the Menu button to enter the printer menus.
    • Press the Right Button to scroll through the menu items until you see Reports.
    • Press the Select button once to enter the Reports menu.
    • Press the Right Button until you see Menu Settings Page.
    • Press the Check Button once. The printer should display Printing Menu Settings Page and the menu settings page(s) should print out.

    On the menu settings page(s), look for an entry called PC Kit. If the counter has been reset correctly, the PC Kit should read Ok.

Error messages

A Photoconductor (PC) Life Warning or an 84 - PC Kit life message indicates that the photoconductor unit is near the end of its functional life and should be replaced soon. The recommended action is to replace the photoconductor unit or have an extra one in stock. You can press the Check Button to clear this message and continue printing.

A Photoconductor Exhausted or an 84 - Replace PC Kit message indicates that the photoconductor unit has run through its functional life. At this time, you must replace the photoconductor unit and reset the photoconductor page count to clear this message.

Note:  The printer will stop working once this message appears. You cannot clear it without replacing the photoconductor unit and resetting the photoconductor page count.

Alternate method

If pressing the stop/cancel button does not reset the photoconductor page count, follow the steps below to enter the printer's Configuration menu and reset the counter there.

  1. Power off the printer.

  2. With the printer off, press and hold the Check and Right buttons.

  3. Power on the printer while keeping these buttons pressed down. Watch the printer screen. When CONFIG MENU is displayed, let go of the buttons.

  4. Press Right button to scroll through the menu items until you see Reset PC Cnt.

  5. Press the Check button once, then press the Check button again to confirm the reset.

  6. The printer should briefly display the message "Resetting PC Counter" and return to the main menu.

  7. To exit the Configuration menu, press Right button to scroll through the menu items until you see Exit Config Menu. Press the Check button.

  8. If the photoconductor warning messages continue to appear, please contact Lexmark Technical Support or your next level of support for additional assistance.

LEGACY ID: HO3486

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