Technical information

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e. Use the arrow keys to navigate to the “print-mech button tap” menu. Select Ok. LCD

screen should display “code = 0”.

f. Use the arrow keys to enter “code = 41” (or just enter 41 on keypad). Select Ok. The

Tap 41 diagnostic test pattern should begin to print. Refer to 2

video at link below on

how to analyze the printed diagnostic pattern.

Officejet 6210/6310 Alternative Menu Access:

a. Press the * and # keys simultaneously.

b. Enter 124 (or 123) at keypad.

c. Use the arrow keys to navigate to the System Menu. Select Ok.

d. Use the arrow keys to navigate to the ‘print-mech tap test’. Select Ok. Should display

‘code = 0’.

e. Use the arrow keys to enter ‘code = 41’ (or just enter 41 on keypad). Select Ok. The Tap

41 diagnostic test pattern should begin to print.

NOTE: If nothing prints, then try entering ‘code=43’ (select OJ printer models l everage different test codes).

REFERENCE: Tap 41 Diagnostics [HP Deskjet 6900 -use HP 93 thru 97 cartridges]: http://i nkjet411.com/?page_id=1741

---- If the printer attempts to print the diagnostic test pattern (1 page) then the printer is generally

considered operational and functional, if nothing is printed, but the printer attempts to print the

pattern, then the tri-color ink cartridge is either empty, clogged or severely electrically damaged (black

ink cartridge is not used). A good HP 93/95/97 color cartridge should display 600 good nozzles, while a

good HP 92/94/96/98 black ink cartridge should show 672 good nozzles. You can remove the tri-color

cartridge, reactivate the tap 41 test and the printer will print the diagnostic test print in black ink. If the

results yield anything different then the ink cartridge is likely damaged and will need to be replaced.

Refer to video above on how to read the printout.

You can also test general printer performance by running the 'Tap 10' diagnostic test, use same

procedure above and enter "code = 10". Both the ‘Tap 41’ and ‘Tap 10’ tests are ‘forced print tests’ –

the printer will make every attempt to print the pattern whether the ink cartridges are good or bad…the

patterns should be utilized to diagnose cartridge health. If ‘regular’ printing is still not possible then one

or both of the ink cartridges is damaged.

CARTRIDGE ERROR BYPASS PROCEDURE:

It is possible to 'temporarily' bypass the cartridge error message (for emergency printing purposes only -

REFER TO 3RD VIDEO). However, if the cartridge is determined to be electrically damaged it will

eventually need to be replaced with a new one. http://inkjet411.com/?page_id=544

NOTE: There are 2 main branches under the service menu, so finding the ‘CHECKSUM’ menu for your

particular printer model may involve some exploring thru the various menus….

1. Press the * and # keys simultaneously.