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HP Designjet 500 and 800 Series Printers - Ink System Error Messages
The minimum Printhead life expectancy is anticipated to be 530cc for the Black Printhead and 200cc for the Color Printheads, provided that the Printheads are used under normal operating conditions (using HP Ink Cartridges only) and the “install before date” has not lapsed. Results vary, depending on the print quality setting being used.
In a normal situation, the Printhead should only be replaced when advised by the Printer. If print quality is poor, the first step should always be to perform the Troubleshooting procedure, which uses various levels of recovery actions to determine whether the Printhead needs replacing.
Printhead error messages
There are 3 error message displays that indicate the need to replace the Printheads:
Printhead Error message.
When the message in Figure 1 appears, the Printer has determined that one of the Printheads has experienced a problem and should be replaced. Figure 1 shows the display, indicating which printhead has a problem.
Figure 1: Printhead Error message
Printhead Error (unknown) message.
When this message appears, one of the Printheads has experienced a problem but the Printer does not know which one it is. Figure 2 shows the display, in which question marks are placed over printheads suspected of having a problem.
Figure 2: Printhead Error (unknown) message
In order to identify and replace the failing Printhead, try the following:
Printhead Warning message.
When the message in Figure 3 appears, the Printer has determined that one of the Printheads has worn out and should be replaced. This message normally appears when you check the status of the Printheads by selecting the Ink Menu. Figure 3 shows the display, which indicates the worn Printhead with an "!"
Figure 3: Printhead Warning message
The Printer normally determines this when: