Service Tests and Utilities

11The Front Panel then displays the Open Loop UNROLL test result.

12Press any key to continue.

13The Front Panel then displays:

„Starting Paper Motor.

„Starting Paper Axis.

„Calib. Analog Decoder.

14The Front Panel then displays the Analog Decoder calibration results.

„The GAIN for channel A must be between 0 and 3.5.

„The GAIN for channel B must be between 0 and 4.5.

„The OFFSET for channel A must be between -63.5 and 63.5.

„The OFFSET for channel B must be between 63.5 and 63.5.

15If the results are correct, press OK to accept the results. If the results are not correct, press Back/Cancel to reject the results and FAIL the test.

16If you accept the results, the Front Panel then displays:

„Starting Media Path.

„Homing and repeatability test.

17The Front Panel then prompts you to remove the media.

18Remove the media.

19Press any key to continue.

20The Front Panel then displays:

„PWM test without paper.

21The Front Panel then displays the test results.

„The PWM avg results must be between 16000 and 14000.

„The Speed error results must be less than 50.

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HP Designjet T Series — Service Manual