Regarding the Photosmart 7500 printer issue (i.e. HP 564 cartridge errors, or similar) which is preventing printing to your printer....let's run thru a full checklist to ensure you cover all variables which could be causing the issue:
CAUTION: the use of compatible/clone cartridges (i.e. sold thru the internet from China) are known to be problematic and may cause printer errors and permanent PRINTHEAD damage since many have incompatible ink formulations (see Buyers Laboratory, BLI, Printer Test Report dated Jan 2014). Original/genuine ink cartridges is only suggested!
1) For refilled or remanufactured ink cartridges which do not have a new chip installed, if you received an "Unauthorized ink", "non-HP ink", "counterfeit ink" or similar message, you can simply ignore/dismiss these messages by pressing 'OK' once for each cartridge, so that the printer resumes its normal operation. If you do not have the full printer driver version installed it is possible that you may not be able to see the cartridge error bypass option - you may need to install the complete printer driver version for your computer's operating system. Receiving these kinds of ongoing alert messages is COMPLETELY NORMAL when using refilled ink cartridges. Refer to NOTE 2 below for more information. Refilling the ink cartridges does not include reprogramming of the ink cartridges, so this will not be a factor: http://inkjet411.com/?page_id=1407
2) Remove ink cartridge and inspect cartridge's smart chip surface (i.e. gold contacts) - check for scratches or ink residue. See pictures of cartridge chips at following link for reference (see 'Abnormal Cartridge Errors'): http://inkjet411.com/?page_id=1925
- Replace cartridge if suspected damaged.
3) Perform Tap 41 PRINTHEAD Health Diagnostics Test (menu access varies by printer model, refer to HP printer diagnostics document, page 45, to view normal display messages, http://inkjet411.com/?page_id=1813
1. Turn ON the printer.
2. Press and Hold the "Print Photos" & "Red Eye Removal" buttons.
3. Release both buttons - screen should display "Enter Special Key Combo"
4. Press and release in sequence the "Red Eye Removal", "Print Photos", and then "Red Eye Removal"
5. Scroll through the menu by pressing the right arrow button until the display says 'Special Reports'.
6. Select Ok, then press the arrow button until the 'print-mech button tap' menu is displayed.
7. Select Ok (Code = 0 will be displayed); click and hold Right Arrow until 'code = 41' is displayed.
8. Select Ok. The test page prints. If not, repeat steps 2-7 and enter 'code = 43', select Ok.
9. Check the 4th line at the top of the printed report; an electrically good/stable PRINTHEAD 'Pen Status' will state "Pen Status: Pen OK".........if any other message is displayed then the PRINTHEAD may have failed and may need to be replaced (as available). It is suggested to perform the 'Printer Reset' procedure below to rule out printer firmware related problem.
a. If Step 2. does not allow service menu access, then press the 'Return' and 'Home' keys simultaneously so the Engineering Menu is displayed [or depress the 'Return' button four (4) times]
b. Select Service Menu. Use arrow keys to advance to the Special Reports Menu. Select OK. Perform steps 6-9.
NOTE: The Tap 10 extended self-test print may also be initiated via 'code = 10' (use to verify ink nozzle/jetting performance for each color).
* Failure of the PRINTHEAD has nothing to do with refilled ink cartridges; the PRINTHEAD assembly is a separate electronic unit in which the cartridges plug into and feed ink into. Refer to NOTE below.
4.a.) It is possible that your ink cartridge may have been manufactured before Sept 2010 and is now incompatible with the newer line of HP Photosmart and Deskjet printer models. If this is the case then you will need to obtain a new ink cartridge manufactured after September 2010 (all cartridges at retail should now be >July 2012). Inspect cartridge bottom for 'date stamp' - see picture at the following link: http://inkjet411.com/?page_id=1925
4.b.) Replace ink cartridge with a new HP original ink cartridge to completely rule out the ink cartridge as the cause of failure.
5) To rule out printer/cartridge connectivity (assembly interface/connection) issues please ensure you have followed all steps on the Inkjet411 support page - this includes PRINTHEAD removal and thorough cleaning of the electrical surfaces on the PRINTHEAD and on the CARRIAGE ASSEMBLY: http://inkjet411.com/?page_id=1451
a. Remove all 4/5 ink cartridges, then remove the internal PRINTHEAD and thoroughly clean rear electrical contacts and carriage electrical contacts. Inspect ink foam ports to see if they are 'wet with ink'...this will confirm whether ink is being pulled into the PRINTHEAD or not. If the ink foam ports are completely dry (no significant amount of ink present when blotted with a paper towel, etc.), then the PRINTHEAD is likely considered too dry to support proper ink flow and subsequent printing operations. Refer to PRINTHEAD removal process at HP.com (link down below) or at the following Inkjet411 link to provide general guidance: http://inkjet411.com/?page_id=1451
6) If after thorough electrical contact cleaning the problem persists, you may need to replace the PRINTHEAD ASSEMBLY (i.e. get from HP or Amazon), however, as a last ditch effort, you might want to perform a hot water flush on the PRINTHEAD: http://inkjet411.com/?page_id=2412
a. Remove all ink cartridges from the printer.
b. Remove the printhead - in most cases you will need to pull up on the lever at right side of carriage assembly to unlock the printhead. Lift printhead straight up to remove.
c. Over a sink, run warm tap water directly into the 4 (or 5) ink ports for approximately 2 minutes - this will effectively saturate the foam ports and blow ink out/thru the nozzle plate bottom.
d. Using a lint-free towel, remove water from rear/bottom electrical contacts. Ensure printhead electrical contacts and exposed surfaces are fully dry.
e. Install the printhead into the printer. You may observe a "Replace Printhead message" so you will need to cycle printer power by turning printer off and then on to clear the error.
f. Install ink cartridges and retest printer. You should observe a New PRINTHEAD alert message followed by an approx. 4-minute preparation countdown prompt.
g. If permissible, activate the 'Clean Printhead'. This can be done from the printer's control panel or software printer driver (for example, by selecting 'Tools' - 'Clean Printhead', or similar).
h. If you have reached this point of the troubleshooting and all the previous troubleshooting steps did not work, then the printhead is likely damaged or at end of life* and may need to be replaced.
NOTE: On some HP printer models it may be difficult to remove the PRINTHEAD assembly, consult your User's Guide for specific instructions.
7) If this does not remedy the problem, then you may have a defective PRINTHEAD in the printer (worst case scenario), unrelated to the refilled cartridges.
8) On the other hand, if you observe missing colors or poor image quality then air may have been accidentally ingested into the ink lines between the cartridge(s) and PRINTHEAD. To recover from this problem, you will have to run the "Clean Printhead" procedure 1-2 times to recover the ink system, or perform a hot water flush of the PRINTHEAD assembly (takes about 10 minutes). Watch the video on our support page which describes some of the common issues you may encounter. This type of problem is common and completely recoverable.