Technical information

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active state of both cartridges. Please note this type of failure is quite rare with an ink cartridge that that

has only been refilled once or twice.

For reference, the following page provides a complete review of the majority of cartridge error

messages you may observe on your printer at one point or another:

http://inkjet411.com/?page_id=415 (60/61s)

However, if your printer works routinely after inserting a brand new cartridge in it, you should discuss

the possibility of a refund with your local Costco. We regret your inconvenience, and we hope that you

will continue to consider the compelling value of inkjet refilling in the future.

Please let us know if you have any further questions on this...we apologize for the inconvenience this

has caused you.

- Thank you

++CARTRIDGE SELF-DIAGNOSIS PERFORMED (74/75 System)

Regarding your recent self-diagnosis of the HP 74/75 cartridge using the cartridge clear/bypass

procedure, it appears the ink cartridge is internally damaged, particularly since you are seeing the

"Incompatible Print Cartridge" error message ----- this is typically indicative of failed micro-electronics

internal to the ink cartridge(s). It is common to have a marginally performing ink cartridge (which was

performing ok before) in the adjacent slot (i.e. color), then when a marginally performing cartridge is

installed into the other slot (i.e. black), both of the ink cartridge(s) then get flagged with electrical errors.

NOTE: Unfortunately, alignment pages and internal self test prints will usually print Ok even if the

cartridge is internally electrically damaged. Do not use these test pages as a proxy for determining

whether a cartridge is good or bad, only the ‘Tap 41/43’ diagnostic test report can yield this information.

As a temporary workaround, or if you are unable to determine which cartridge is causing the issue,

remove one of the ink cartridges from the printer....this will place the printer into the 'single cartridge

printer mode'....print jobs may then be executed from the computer (only): For more information, refer

to your printer user guide.

Running the 'Tap 41' cartridge health diagnostics test will confirm the active state of both cartridges -

see video here: http://inkjet411.com/?page_id=792

>> Providing the color cartridge is partially functioning the Tap 41 diagnostic test print will be printed

(this is a forced service print test which is mainly used for the evaluation of ink cartridge electrical

health. A good HP 75/75XL color cartridge should display 600 good nozzles, while a good HP 74/74XL

black ink cartridge should show 672 good nozzles. If the results yield anything different then the ink

cartridge is likely damaged and will need to be replaced. Refer to video on how to read the printout.