LaserJet M631z MFP
The HP LaserJet M631z MFP is exactly what its late-2010s badge suggests: a mono multifunction printer made for everyday office document printing. What keeps the LaserJet M631z MFP relevant is everyday office document printing: unglamorous, essential, and exactly what offices need.
The LaserJet M631z MFP runs on the HP 37A family — the CF237A cartridge — shared with 39 other HP models, so supplies stay easy to find. Heavier users of the LaserJet M631z MFP can step up to the high-yield CF237X, while the standard CF237A covers lighter everyday office document printing.
Toner Cartridges for LaserJet M631z MFP
This printer works with the following toner cartridges:
- HP CF237A
- HP CF237X
- HP CF237Y
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Frequently Asked Questions
Which cartridge codes fit the LaserJet M631z MFP?
The LaserJet M631z MFP fits CF237A, CF237X, CF237Y. The code printed on the box is what matters; matching it exactly is how you avoid returns.
When should I replace the toner in my LaserJet M631z MFP?
Swap the CF237A when prints from the LaserJet M631z MFP fade, streak, or the printer reports the cartridge as empty. "Toner low" warnings arrive earlier and still leave room to print, so keep a spare CF237A ready. Change it when quality visibly drops, not at the first warning.
Can I still scan with the LaserJet M631z MFP when the toner runs out?
Yes — scanning to a computer doesn't use toner, so the LaserJet M631z MFP keeps scanning even with an empty CF237A. Copying is the exception: it prints the scan, so it needs toner to work. Replace the CF237A when copies from the LaserJet M631z MFP start fading.