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Lexmark CX825

Paper jam errors caused by loose chads from Hole Punch unit

MS822, MS824, MS826, MX822, MX824, MX826

What you will see

Hole punch unit (HPU) jam messages, i.e., 444.13, resulting from loose chads in and around the hole punch unit.

Additional identifiers:

The following may be evidence that loose chads are the cause for an increase in number of HPU jam errors:

Stapled chads in finished output...

Or, loose chads in the job stack.

Suggested remedy

These false jams can occur if sensors along the paper path get blocked by loose chads. Here are some basic checks and maintenance tips to prevent this occurrence.


a. Remove the chad box and remove all loose chads.

b. Remove all loose chads from the cavity where the chad box normally resides. This area is inside the hole punch unit.

2Open the rear door and remove any loose chads.
3Examine the HPU output bin and remove any loose chads.

Still need help?

If you need additional assistance, please go to the Lexmark support site, type your printer model and locate

Get in Touch with Lexmark! for contact information.
When calling for support, you will need the following:

  • Printer model
  • Printer serial number
  • Toner/imaging unit/waste toner bottle part number and serial number (for supply-related issues)

Please be near the product/s described in this article to expedite the support process and reduce callbacks.