HP chose to use their in-house developed Printer Command Language (PCL) as opposed to Apple, which adopted the PostScript language, as developed by Adobe Systems. The first HP LaserJet and the first Apple LaserWriter used the same print engine, the Canon CX engine. In spring of 1989 The New York Times said that HP "dominates" the PC laser printer market. Due to a very tight turnaround schedule on the first HP LaserJet, HP elected to use the controller already developed by Canon for the CX engine in the first HP LaserJet. Reseat the connectors from the specified motor to the DC controller.Most HP LaserJet printers employ xerographic laser-marking engines sourced from the Japanese company Canon. Replace the power supply.…Ī motor error has occurred. Replace the the toner sensor contact assembly. Reseat the connections from the power supply to the DC controller. 57.04 = Fomatter/controller fan error (fan 2). Turn the printer…Ī printer error has occurred. Check the printers configuration page for input options installed. 56.02 = duplexer was removed while the printer was turned on. This can occur due to a timing error or intermittent connection between the formatter and…Ī printer error has occurred. The communication link between the formatter and DC controller was lost. The engine is not communicating with the formatter. If the problem continues try a different firmware file. Reboot the printer and restart the firmware upgrade. Replace…Īn error has occurred during the firmware upgrade to cause it to fail. Turn the printer off and reseat the specified DIMM. The DIMM causing the error will not be used. The problem is usually related to the printer's memory DIMM(s). Reseat the connection between the laser scanner and the DC controller. Replace the DC controller.Ī printer error occurred in the laser scanner circuit. Reseat the connector between the laser scanner and the DC controller.
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