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Error 0x00C10021Critical Severity

Ink System Power Supply Error

Severity:Critical Severity
Affected:11 models
DIY Fix:Professional Recommended
What This Error Means

This error indicates a critical problem with the power supply specifically for the ink delivery system. This prevents the ink system from receiving power and operating.

Common Causes
  • 1Defective power supply unit (PSU)
  • 2Faulty main PCA (power distribution circuit)
  • 3Short circuit in ink supply station or carriage PCA
  • 4Loose power connections
  • 5Power surge damage
Symptoms to Watch For
  • Ink system components unresponsive
  • Printer unable to initialize
  • No power to ink pumps or printheads
  • Error message on display
  • Printer completely dead or partially functional
Basic Troubleshooting Steps
1. Turn off the printer and unplug the power cord. 2. Ensure the power cord is securely connected to both the printer and a working wall outlet. 3. Plug in the printer and turn it on. If the error persists, contact a qualified service technician, as this often requires internal power supply replacement.

Video Guides

5 videos

HP OfficeJet Pro 8610, 8620, 8710, 8720 Ink System Failure

3 years ago

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How to fix "Ink System Failure" and General Printer Error on HP 8710, 8720, 8730, 8600, 8610, 8620

HP Supply System Problem Fix!

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Affected Printers (11)
DesignJet 750c
DesignJet T1100
DesignJet T1120
DesignJet T1200
DesignJet T7100
DesignJet T7200
DesignJet T790
DesignJet T920
DesignJet Z2100
DesignJet Z6 PostScript
DesignJet Z6800 Production Printer
Related Resources
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