Technical information

1. Turn printer OFF and wait for all the front panel lights to turn OFF.
2. Remove the power cord, media and ribbon.
3. Remove the Electronics Compartment Cover.
CAUTION: Before removing and replacing electronic boards or
assemblies, observe proper electrostatic and electrical safety precautions.
4. Disconnect the Main Logic Board’s Ribbon Cable connector from the
contact pins of the Sensor Circuit Board.
NOTE: Certain printers may have the media sensor contact pins inserted directly into a
connector mounted directly to the Main Logic Board.
5. Refer to the Media Sensor and Ribbon Guides drawing in Section 7 and
carefully slide out the Upper Media Guide Assembly (part # 44140M).
6. Orient the Printer with the media compartment facing the technician.
7. Referring to the Media Sensor and Ribbon Guide Drawing in Section 7,
locate the two mounting screws (part # 44114) used to secure the Media
Sensor Assembly to the Main Frame.
8. Using a Long Reach, Magnetic Tip, #2 Phillips screwdriver, carefully
remove the two mounting screws.
9. Carefully remove the Media Sensor Assembly from the Main Frame.
CAUTION: After removing the Media Sensor Assembly, note the
position of the sliding tab. This tab is connected to the Upper Media
Sensor.
1. Match the position of the sliding tab of the replacement sensor assembly
with that of the sensor assembly previously removed.
2. Carefully install the Media Sensor Assembly so that the connector pins fit
into the guide holes on the back of the Main Logic Board. Attach the ribbon
cable connector to the contact pins of the media sensor.
NOTE: On certain printer models removal of the Control Panel
Assembly allows visual inspection of the alignment of
the Main Logic Board and the Media/Ribbon Sensor
Assembly connection.
3. Using a Long Reach, Magnetic Tip, #2 Phillips Screw Driver, reinstall the
mounting screws. Torque screws to 10-12 inch-pounds.
4. Reinstall the Upper Media Guide Assembly.
5. Reinstall the media and ribbon.
6. Reconnect the power cord. Turn the printer ON, recalibrate the media and
check for proper media and ribbon operation.
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