cable from Engine PCA is not connected to Power Supply PCA
Last updated: February 22, 2026
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System error code: 86:01 on HP T790 T1300 T2300 Designjet Printer
System error code: 86:01 on HP T790 T1300 T2300 Designjet Printer See this video: https://youtu.be/Lhb-g4gKpKE Carriage ...
cable from Engine PCA is not connected to Power Supply PCA
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Restart the device. Check power cable to Engine PCA for damage.Run the 00102 Check Mechatronics diagnostic of communication to engine PCA, Replace Engine PCA if needed.
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A flexible flat cable that connects the carriage assembly to the main PCA, transmitting data and power signals to the printheads as the carriage moves.
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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