23
HP Printer
Severity:What Does This Error Mean?
Error 23 means the printer does not have enough memory to process the current job. This often happens with complex documents containing many graphics or large images. You can fix it by simplifying the job or adding memory to the printer.
Affected Models
- HP LaserJet 4 Series
- HP LaserJet 4L
- HP LaserJet 5 Series
- HP LaserJet 5L
- HP LaserJet 4000 Series
Common Causes
- The document being printed has too many high-resolution images or graphics
- The printer has very little installed RAM and cannot buffer the full page
- Multiple large print jobs were sent to the printer at the same time
- The printer driver is sending data in a format that uses more memory than needed
- A software application is not optimizing the print data before sending
How to Fix It
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Cancel the current print job. On your computer, open the print queue and delete all pending jobs.
In Windows, go to Settings > Devices > Printers and select your printer to open the queue.
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Reduce the print resolution. Open your print settings and lower the DPI from 600 to 300.
Lower resolution uses significantly less printer memory and is often fine for text documents.
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If printing a document with images, try compressing the images in the original file before printing.
In Microsoft Word, use File > Compress Pictures to reduce image file sizes before printing.
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Split a large document into smaller sections and print them separately.
Instead of printing 50 pages at once, try printing 10 pages at a time.
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Update the printer driver from HP's support site. Newer drivers handle memory more efficiently.
Download the full driver package from support.hp.com and install it fresh.
When to Call a Professional
If your printer constantly shows error 23 with everyday documents, it may be time to upgrade. Some older LaserJet models can accept additional RAM modules. A technician can install extra memory for around $30 to $80 depending on the model.
Frequently Asked Questions
What is the difference between error 20 and error 23?
Error 20 means the printer memory completely overflowed. Error 23 means the printer does not have enough memory to start processing the job. Both are memory-related but error 23 occurs earlier in the print process.
Can I add more RAM to my HP LaserJet to fix error 23?
Yes, many older HP LaserJet models have memory expansion slots. Check HP's specs for your model to see what memory modules are supported. Adding RAM is one of the most cost-effective upgrades for older printers.
Error 23 only happens when I print PDFs. Is that normal?
Yes, PDFs often contain embedded fonts and high-resolution graphics that use a lot of printer memory. Try printing the PDF at a lower quality setting. You can also try printing as an image, which sometimes uses less memory.