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Diagnostic Tests 5-13
015 Negative Developer Bias Test
1 Open the top cover and insert the interlock by-pass tool.
2 Remove the photoconductor unit and place it in its protective packaging.
3 Go to: 015
4 Press: READY to run the test. The negative developer bias turns on and off repeatedly.
5 Confirm that the display alternates between “0” and “1,” accompanied each time by a
brief tone. The display indicates the following:
These codes may indicate specific error conditions:
6 Press: STOP to exit.
7 Reinstall the photoconductor unit.
8 Remove the interlock by-pass tool and close the top cover.
Table 5-12. Negative Developer Bias Test Displays
Display Indication
0 Negative developer bias off
1 Negative developer bias on
Table 5-13. Negative Developer Bias Test Error Displays
Display Indication
030 Developer bias short
041 Seam sensor (sender) short
090 You forgot to insert the interlock by-pass tool
4-1 You forgot to remove the photoconductor unit