Technical information

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Please refer to our video on how the INK CARTRIDGES vs. PRINTHEADS interact:
http://inkjet411.com/?page_id=2054
For any additional questions please contact us directly: [e-mail]
-Thank you
HP OFFICEJET PRO 8500A (HP 940s) – POWER OFF/CARTRIDGE ACCESS DOOR TRICK
With respect to the HP OJ PRO 8500A Plus workflow of having to power off the printer to get the
printing/copying to function following the printer dropping into standby mode, this is indeed quite
unusual. I suspect this might be a driver issue, and you may just need to reinstall your printer driver
software.
However, before you do that, instead of powering off the printer on the next print job attempt, try
opening and closing the cartridge access door....see if a print job comes thru. If it does, then this will
confirm there is a probable printer driver 'hand-shaking' issue.
We also suggested you press and hold the reset button on the printer for five seconds...this will reset
the cartridge's smart chip, and may correct the current ‘interface’ issue.
If the error continues, then we suggest you remove the refilled ink cartridge and inspect the smart chip
contact surface (located in bottom/rear portion of cartridge). If there is any ink on the surface of the
chip please clean thoroughly using isopropyl alcohol dampened lint-free towel, or similar.
ADDITIONAL NOTES:
1) Printer nuisance messages, such as "counterfeit" / "non-genuine ink", are COMPLETELY NORMAL and
should be expected when using HP 940 refilled ink cartridges.
A. If you observe an ink cartridge "expired ink" message then there is a trick to bypass this alert
message, please click here for instructions: http://inkjet411.com/?page_id=1457
B.
Please let us know if the problem persists. For any additional questions please contact us directly:
[e-mail]
-Thank you
HP OFFICEJET PRO LXXX (HP 88s) – CARTRIDGE ERROR
Regarding your recent inquiry about the HP88XL cartridge error message (“REPLACE CARTRIDGE”,
MISSING OR DAMAGED”, or similar printer alert language) associated with your HP Lxxxx series printer.
The cartridge probably has a defective chip which was mis-programmed during the refill process. You