BeforeHP Designjet 500 – System Error 21:10anything, check that the firmware is up to date :Turn the printer off and back on 5 minutes to recreate the error message.If the error reappears, continue with the remaining steps.Turn the printer off and unplug the cable to transfer data (parallel and / or network), leaving the power cable connected.Turn the printer: if the error appears again to continue with the next steps. If there is no error, go to the section below “Checking the functionality of the printer.Check all connections: “Interconnect PCA, electronic modules, etc”.If the error persists, replace the front panel (C7769-60161).Following replacement, verify functionality. If problems persist:Replace the interconnect PCA (C7769-60385) and cable PCA (C7770-60267).Following replacement, attempt to verify functionality. If problems persist:Replace the electronic module (C7779-60263)Before anything, check that the firmware is up to date :Before anything, check that the firmware is up to date :Turn the printer off and digital photo frames back on 5 minutes to recreate the error message.If the error reappears, continue with the remaining steps.Turn the printer off and unplug the cable to transfer data (parallel and / or network), leaving the power cable connected.Turn the printer: if the error appears again to continue with the next steps. If there is no error, go to the section below “Checking the functionality of the printer.Check all connections: “Interconnect PCA, electronic modules, etc”.If the error persists, replace the front panel (C7769-60161).Following replacement, verify functionality. If problems persist:Replace the interconnect PCA (C7769-60385) and cable PCA (C7770-60267).Following replacement, attempt to verify functionality. If problems persist:Replace the electronic module (C7779-60263)Turn the printer off and back on 5 minutes to recreate the error message.If the error reappears, continue with the remaining steps.Turn the printer off and unplug the cable to transfer data (parallel and / or network), leaving the power cable connected.
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