Skip to Content Information Center
Lexmark CX421

Lexmark CX421

Poor development of solid black with starter imaging units

Issue description

Poor black transfer seen with larger fonts or areas of large toner coverage.

Click here to view sample image.

Solution

Step 1: Update printer fimware version

  1. If available, update code to FW5.2, or later. Refer to Downloading the latest Lexmark printer firmware to know how to check, download and update the printer firmware.

  2. Retest.

  3. If the issue is not resolved, proceed to step 2.

Step 2: Perform a re-calibration

  1. Activate by navigating to Settings > Print > Quality > Advanced Imaging > Color Adjust > Start.

    Click here to see the steps illustrated.

  2. Retest.

  3. If the issue is not resolved, proceed to step 3.

Step 3: Increase toner darkness setting

  1. To do this from the control panel, navigate to:

    Settings > Print Settings > Quality Menu > Toner Darkness.

  2. Retest.

If the issue persists, search for more information related to this issue or contact support for further assistance.

LEGACY ID: SO8624

האם מאמר זה הועיל לך?
Top