Service Menu 189
Tests, Utilities & Calibrations
3. The Drive Roller begins to turn slowly and the following message is displayed on the Front Panel:
4. Refer to the Cleaning Instructions on page 600.
5. Once you have finished cleaning the Drive Roller and the Overdrive, press the Cancel key to exit.
1.3.2. Enable/Disable OMAS
Description
The purpose of this Service Utility is to enable or disable the OMAS sensor to be able to measure and
troubleshoot the influence of the OMAS sensor on image quality problems. Sometimes, disabling the
OMAS sensor is recommended when the OMAS cannot detect the surface of the substrate. This could
happen if the substrate is highly reflective or the media is very transparent. When the OMAS is disabled
the substrate advance is controlled by the analog encoder on the main drive roller.
Procedure
1. Go to Service Test Menu >1.3 Media Path Menu>1.3.2 Enable/Disable OMAS.
2. The printer asks you if you want to perform this utility, select Yes and press OK to confirm your
selection.
The printer displays the current OMAS state (enabled/disabled) on the Front Panel and asks you to
select the new state for the OMAS sensor.
3. Select enable or disable and press OK to confirm your selection.
1.3.3 OMAS Check
Description
The purpose of this Service Utility is to compare the functionality of the internal temperature Optical Media
Advance Sensor (OMAS) and the external TOMAS sensor. If the values are not similar, perform “5.3.3
OMAS Temperature sensor Calibration”
⇒
page 211. This test also checks the functionality of the OMAS.
Procedure
1. Go to Service Test Menu >1.3 Media Path Menu>1.3.3 OMAS Sensor Check.
NOTE: Please remember to remove the piece of paper from the window sensor before
closing the window as this could damage the window and the sensor.
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