Top (SFP) or Front (MFP) Cover sensor failure, Main PCA failure
Last updated: February 22, 2026
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HP Designjet t830 machine adf paperjam error #shorts #machine #hp
Top (SFP) or Front (MFP) Cover sensor failure, Main PCA failure
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Turn off/on. Run top cover sonsor diagnostic, replace the top cover sensor PCA, replace cable, replace Main PCA
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Optical or mechanical sensors that detect the presence, type, width, and position of print media loaded in the printer.
The printer's built-in display and control interface, typically a touchscreen on modern DesignJet models, used for configuration, status monitoring, and basic troubleshooting.
The main logic board inside an HP DesignJet printer that controls all operations, including processing print jobs, managing ink delivery, and communicating with connected devices.
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