!
error HP
Error Code 20 Insufficient Memory
Memory overflow or insufficient memory available for processing the print job.
? What Causes This
Print job is too large or complex for available printer memory.
✓ How to Fix It
- Press the Go button to continue.
- Simplify the print job or reduce image complexity.
- Upgrade printer memory if problem persists.
Source: page 142 of the official manual
From the manual
This error code appears in:
HP Laserjet 1010 Printer