HP C30 manual Negative Developer Bias Test Displays Indication

(014 intentionally excluded)

015 Negative Developer Bias Test

1Open the top cover and insert the interlock by-pass tool.

2Remove the photoconductor unit and place it in its protective packaging.

3Go to: 015

4Press: READY to run the test. The negative developer bias turns on and off repeatedly.

5Confirm that the display alternates between “0” and “1,” accompanied each time by a brief tone. The display indicates the following:

Table 5-12. Negative Developer Bias Test Displays

Display Indication

0Negative developer bias off

1Negative developer bias on

These codes may indicate specific error conditions:

Table 5-13. Negative Developer Bias Test Error Displays

Display	Indication
030	Developer bias short
041	Seam sensor (sender) short

090You forgot to insert the interlock by-pass tool

4-1 You forgot to remove the photoconductor unit

6Press: STOP to exit.

7Reinstall the photoconductor unit.

8Remove the interlock by-pass tool and close the top cover.

Diagnostic Tests 5-13