HP Enterprise CC490A manual Disable cartridge check, Engine-test button

3.Insert a folded piece of paper into each slot at the same time until the product is in a Ready state. Figure 3-2Diagnostic test (2 of 2)

Disable cartridge check

Use this diagnostic test to print internal pages or send an external job to the product when one or more print cartridges are removed or exchanged. Consumable supply errors are ignored while the product is in this mode. When the product is in this mode, you can navigate the menus and print internal pages or send an external print job to the product. This test can be used isolate problems, such as noise, and to isolate print-quality problems that are related to individual print cartridges.

NOTE: Color cartridges are not keyed and can be interchanged. The black print cartridge is keyed and cannot fit into any other position. An error will display on the control panel if a print cartridge is installed in the wrong position. The SUPPLIES STATUS menu will explain which print cartridge is misplaced.

NOTE: Do not remove or exchange print cartridges and image drums until after you start the disable cartridge check diagnostic.

1.Press the Home button.

2.Press the down arrow to highlight DIAGNOSTICS, and then press the OK button.

3.Press the down arrow to highlight DISABLE CARTRIDGE CHECK, and then press the OK button.

To exit this diagnostic test, press Stop and then select EXIT DIAGNOSTICS.

Engine-test button

To verify that the product engine is functioning, print an engine test page. Use a small pointed object to depress the test-page switch located on the rear of the product. The test page should have a series of

244 Chapter 3 Solve problems ENWW