HP C7770B HP Designjet 500 Plus - Pocket Guide - Page 95
Pocket Guide.
UPC - 725184439704
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Message Open window and check printhead cover is properly closed Open window and check proper installation of setup printheads Explanation and Action You have replaced one or more printheads and the printer's check has found that the printhead cover is not securely closed. Open the window and check the printhead cover. The procedure is described on page 38 on the reverse of this Pocket Guide. Note: This message may also appear following a paper jam, as the printer cannot detect the exact reason for the problem. In this case you may have to resort to powering off the printer or even removing the power cable from the machine, in order to recover from the problem. See "Removing Jammed Paper" on page 3. During system start-up, which occurs when you first install the printer, you need to install the setup printheads. These special printheads cannot be used for printing, but must be used when the printer has been powered off. The printer has detected that the setup printheads have not been installed correctly. Open the window and follow subsequent instructions to reinstall or relocate the setup printheads. Contact HP for advice if the setup printheads are missing or cannot be installed correctly. Front-Panel Error Messages 31 front-panel error messages