HP C7769B Service Manual - Page 62

Ink Supplies Troubleshooting minimum life expectancy of the Printhead was reached and without any error being reported. n Removed - Unknown: The status of the replaced Printhead was unknown. n Removed - Err xxxx: The printhead was replaced after being marked with an error code. For Printhead Error Codes, refer to Page 3-22. 6 The front panel displays information on the selected item. PH Info - Black #4 Ink used: 260 cc (49%) Usage time: 135 days P/H cleaning: 0 Error code: 0025 Removal date: 20-Sep-01 The information displayed is: n The amount of ink the Printhead has consumed. n The number of days the Printhead has been installed in the Printer. n A code indicating whether Printhead recovery (Troubleshooting procedure) has been performed or not: - 0 indicates that the Printhead recovery was never performed. - 1 indicates that a Level 1 (soft) recovery was performed. - 2 indicates that a Level 2 (medium) recovery was performed. - 3 indicates that a Level 3 (hard) recovery was performed. 3 is the maximum recovery level that the Printer can perform before asking the customer to replace the Printhead. n The reported Error Code (if any). n The date the Printhead was removed from the Printer. Is the Printer Causing Repetitive Printhead Problems? The minimum life expectancy of the Printheads is 530cc for the Black Printhead and 200cc for the Color Printheads. If Print Quality is poor before the minimum life expectancy of the Printhead has been reached, the Troubleshooting procedure should be performed (Refer to Page 6-4) which will determine whether the Printhead needs replacing or not after performing various levels of recovery actions. After performing a recovery action, the Printhead will be encoded with either 1, 2 or 3 (depending on the strength of the recovery action performed). 3-16 HP DesignJets 500 and 800 Series Printers Service Manual