Technical information

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4. Press the Right arrow key. The "Underware" menu should be displayed.

5. Press the right arrow key until the ‘print-mech button tap’ menu is displayed.

6. Select Ok (Code = 0 will be displayed); click and hold Right Arrow until code = 41’ is displayed. Use the

Left Arrow if you need to decrease numerical count.

7. Select Ok. Within one minute the Tap 41 diagnostic test pattern should be initiated and print

(whether ink cartridges are good or not, i.e. this is a forced print test). Refer to 2nd video at followin g

link on how to interpret the diagnostic test report: http://inkjet411.com/?page_id=1741

NOTE: If access code '41' does not yield a test print, then try and enter "code = 43").

--- A good HP 93/95/97/99 color cartridge should display 600 good nozzles, while a good HP

92/94/96/98 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 2nd video on how to read

the printout: http://inkjet411.com/?page_id=1741

Procedure C.2.:

1. Load Letter/A4-size paper into paper feed tray.

2. Press and HOLD the Cancel button, press Ok button once.

3. At ‘Mfg Commands’ menu, click Right Arrow until ‘uiaux service’ menu is displayed.

4. At ‘uiaux service’ menu, click the Right Arrow until Special Reports menu is displayed.

5. Select Ok, then click Right Arrow until the ‘print-mech button tap’ menu is displayed.

6. Select Ok (Code = 0 will be displayed); click and hold Right Arrow until code = 41’ is displayed.

Use the Left Arrow if you need to decrease numerical count.

7. Select Ok. Within one minute the Tap 41 diagnostic test pattern should be initiated and print

(whether ink cartridges are good or not, i.e. this is a forced print test). Refer to 2nd video at following

link on how to interpret the diagnostic test report: http://inkjet411.com/?page_id=1741

NOTE: If access code '41' does not yield a test print, then enter "code = 43").

--- A good HP 93/95/97/99 color cartridge should display 600 good nozzles, while a good HP

92/94/96/98 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 2nd video on how to read

the printout: http://inkjet411.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). You can remove the tri-color cartridge, reactivate the tap 41 test and the

printer will print the diagnostic test print in black ink (special "ink back-up mode").