error-51 Troubleshooting

Unable to print 51 on the HP Smart Tank 5105 3-in-1 Multifunktionsdrucker

Source: HP Support — printer error codes Confidence: 80% Verified Aug 9, 2026

The printer reports a laser unit problem, often after a cartridge change.

How to fix Unable to print 51

Reseat the cartridge

Open the printer, ensure the cartridge, laser, and lid are installed properly, and close the cover.

Source: HP Support — printer error codes Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 5 min

Parts needed: HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Toner Cartridge

Replace the laser unit

If the error persists, the laser unit may be defective and need replacement.

Source: HP Support — printer error codes Confidence: 80% Verified Aug 9, 2026
Difficulty: ★★★ Est. 30 min

Replacement parts for the HP Smart Tank 5105 3-in-1 Multifunktionsdrucker

HP OfficeJet Pro 9015 Maintenance Kit HP DeskJet 2755e Maintenance Kit HP LaserJet Pro M404 Maintenance Kit HP 953 Maintenance Kit HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Toner Cartridge HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Drum Unit HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Ink Cartridge HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Fuser Assembly HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Paper Tray HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Maintenance Kit HP 963 Maintenance Kit HP 305XL Maintenance Kit HP 304 Schwarz Maintenance Kit HP 62 Maintenance Kit HP 301 Schwarz Maintenance Kit HP 302 Original Druckerpatronen 2er-Pack Maintenance Kit HP 302 Maintenance Kit HP 305 Maintenance Kit HP 903 Maintenance Kit HP 301 Maintenance Kit HP 142A Maintenance Kit HP 912 Maintenance Kit HP 304 Maintenance Kit HP 304 Farbe Maintenance Kit HP LaserJet M110w Laserdrucker Maintenance Kit HP 953XL Maintenance Kit HP OfficeJet Pro 8122e Multifunktionsdrucker Maintenance Kit HP 303 Maintenance Kit HP 305 Original Negro 1 pieza Maintenance Kit HP 903XL Maintenance Kit

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