Service Tests 137
Tests, Utilities & Calibrations
a. Manually load a sheet of paper in to the Printer (an A4 sheet).
b. The Printer will test the Media Drive moving in an open loop.
c. Perform a visual check during the test. The Front Panel will ask you if the paper moved or not:
– If the paper moved, the Front Panel will display system error code 56:10 ⇒ page 108.
– If the paper did not move, the Front Panel will display system error code 41:10 ⇒
page 101.
8. The Printer will now check the Paper Drive servo system and the following messages will be
displayed on the Front Panel:
• Starting Paper Motor.
• Starting Paper Axis.
• Calib. Analog Encoder.
If there is a failure at this point, the Front Panel will display a system error code, for more information
on troubleshooting this error code, refer to page 73.
Once the Analog Encoder calibration is completed, the Front Panel will display the results:
Acceptable values are:
• Gain: between 0 and 5
• DGain between 0 and 15
• Offset: between -80 and 80
If the results are acceptable, press OK. If the results are unacceptable, then press the Back/
Cancel key and the Front Panel will display system error code 56:10 ⇒ page 108.
• Starting media Path.
• Homing and repeat. test.
If there is a failure at this point, the Front Panel will display a system error code, for more information
on troubleshooting this error code, refer to page 73.
9. The Printer will now check the Paper Drive PWM. Load media in to the Printer and press any key to
continue the test.
10. When the PWM check is being performed, the following message will be displayed on the Front
Panel:
• PWM test with paper.
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