HP Designjet T790 and T1300 ePrinter: User's Guide - English
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... it without password protection. Remove the paper and try cleaning the electrical connections. Unload and reload the paper. Table 19-2 Numerical error codes Error code Recommendation 01.0, 01.1, 01.2 Restart the printer. 06:03 Restart the printer. 08:04 Restart the printer. See Update the firmware...password-protected, try to reload it . If the problem persists, update the printer's firmware. See Update the firmware on page 127. 21, 21.1, 21:03, 21.1:03, 21:13, 21.2:13, 22.0, 22.1, 22.2, 22.3, 22.x:03, 24 Restart the printer. 26:01, 26.x:01 Bad contact detected in an ink cartridge...
... it without password protection. Remove the paper and try cleaning the electrical connections. Unload and reload the paper. Table 19-2 Numerical error codes Error code Recommendation 01.0, 01.1, 01.2 Restart the printer. 06:03 Restart the printer. 08:04 Restart the printer. See Update the firmware...password-protected, try to reload it . If the problem persists, update the printer's firmware. See Update the firmware on page 127. 21, 21.1, 21:03, 21.1:03, 21:13, 21.2:13, 22.0, 22.1, 22.2, 22.3, 22.x:03, 24 Restart the printer. 26:01, 26.x:01 Bad contact detected in an ink cartridge...