HP C7769B Service Manual - Page 60
Printhead History Utility, Accessing the Printhead History Utility, Refer
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Ink Supplies Troubleshooting Printhead History Utility The Printhead History utility contains information on the last 5 set of Printheads installed in the Printer. The purpose of this information is to: n Determine whether the Printer is causing repetitive problems to the Printheads ⇒ Refer to Page 3-16. n Determine whether the Customer is replacing the Printheads too early without trying to perform any recovery actions ⇒ Refer to Page 3-18. The information that is stored for each Printhead is: n How much ink was consumed when the Printhead was replaced. n How long the Printhead was installed in the Printer. n Whether the Printhead was in or out of warranty when it was removed. n Whether the Printhead experienced a paper crash. n Whether the Customer performed the right level of Printhead recovery (Troubleshooting procedure) before replacing a Printhead. n The date when the Printhead was removed from the printer. n The reported Error Code (if any). Accessing the Printhead History Utility 1 Press the ↑ or ↓ key until the front panel displays the Setup Menu. Press the Enter key. Set-up menu Menu Press ENTER for Set-up menu Back Enter 2 Press the ↑ or ↓ key until the front panel highlights Log. Press the Enter key. Set-up menu Expansion cards I/O set-up front panel Altitude = 0-1000 m. Log Menu Back Enter 3-14 HP DesignJets 500 and 800 Series Printers Service Manual