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Error 03.0Critical Severity

System Error: Power Supply Unit (PSU) Malfunction

Severity:Critical Severity
Affected:22 models
DIY Fix:Professional Recommended
What This Error Means

This error indicates a problem with the printer's power supply unit. The printer is not receiving stable or correct power, preventing it from functioning.

Common Causes
  • 1Defective or failing internal Power Supply Unit (PSU) component (e.g., capacitors, voltage regulators).
  • 2Loose or damaged power cable connection between the PSU and the main formatter board.
  • 3Overload or short circuit within the printer's electrical system drawing excessive current from the PSU.
  • 4Degraded or faulty external power cord or power strip providing unstable input voltage to the PSU.
  • 5Environmental factors such as power surges or brownouts damaging internal PSU components.
Symptoms to Watch For
  • Printer fails to power on completely, with no display activity or fan noise.
  • Printer powers on briefly, then immediately shuts down with error code 03.0 displayed.
  • Intermittent power loss during operation, leading to unexpected shutdowns.
  • Flickering display or control panel lights before the printer enters an error state.
  • Unusual noises (e.g., buzzing, clicking) emanating from the rear of the printer where the PSU is typically located.
Basic Troubleshooting Steps
1. Ensure the printer is plugged directly into a wall outlet, not a surge protector or UPS. 2. Try a different power outlet. 3. Turn off the printer, unplug it, wait 5 minutes, then plug it back in and restart. If the error persists, the PSU may need replacement.

Video Guides

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Affected Printers (22)
DesignJet 1050c
DesignJet 6500
DesignJet 755cm
DesignJet 9000s
DesignJet SD Pro Scanner
DesignJet Studio 36-inch
DesignJet T130
DesignJet T1530
DesignJet T1600
DesignJet T250
DesignJet T2530
DesignJet T3500 Production eMFP
DesignJet T530
DesignJet T790
DesignJet T930
DesignJet XL 3600 MFP
DesignJet XL 3600dr MFP
DesignJet Z3100
DesignJet Z5600 PostScript
DesignJet Z6 PostScript
DesignJet Z6600 Production
HP DesignJet Studio
Related Resources
DesignJet Glossary
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