HP 750 - Manual (Page 154)

700
750C
750C
Plus
755
CM
8-36 Troubleshooting C4705-90000
16. Pen Nozzle Detect
The purpose of thistest isto check the functionality of all the nozzlesof the cartridges.
Perform the pen nozzle detect test as follows:
1 In the Service Tests submenu, scroll to 16 Pen nozz. detect" and press Enter.
SERVICE TESTS
16 Pen nozz. detect
2 The plotter will automatically test the black cartridge.
The Select a pen to test" message is displayed on the frontĆpanel. Use the Arrow
buttonsto select the cartridge that needsto be tested.
3 Press the Enter button.
4 The Testing xxxx pen" message is displayed on the frontĆpanel.
xxxx represents the color of the cartridge that is being tested.
5 If the test passes, the Pen Test Pass / Press Enter" message is displayed on the
frontĆpanel.
6 If the test fails, the Pen Test Failed / Press Enter" message is displayed on the
frontĆpanel.
If a cartridge fails the test, try one of the following:
1 Reseat the cartridge that failed the test.
2 Perform the pen continuity test ' page 8Ć30.
3 Perform the drop detector test ' page 8Ć37.
4 Perform the nozzle print test ' page 8Ć32.
5 Replace the cartridge that failed the test.