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Calibrating the Printhead
Caution No. 1: This device is electrostatic sensitive. It may be damaged if exposed to static electrical discharges. (Discharges may be generated by various means, such as walking on a carpeted floor.) Be sure to observe all established
Caution No. 2: Discharge (ESD) procedures while handling cables in or near the Circuit Board and Printhead Assemblies. Always wear an appropriate personal grounding device, such as a wrist strap with integral resistor, connected to an ESD ground to avoid potential damage. At a minimum, make positive contact with the bare metal chassis of the printer with the hand before proceeding with the procedure.
Adjusting the RP1 Potentiometer
The RP1 potentiometer controls the lightness and darkness of the printed image. When a new printhead is installed, it may need to be adjusted. Follow the steps below to perform this minor adjustment.
When the Printhead Harness is replaced (along with the power and data cables for the printhead), the Board Assembly, Ribbon Sensor, and Headlift Sensor Switch are also terminated in the Upper Imaging Assembly.
To calibrate the Ribbon Sensor, see Calibrate the Ribbon Sensor. (Note: Do not over- tighten the mounting screw when installing the Headlift Sensor Switch. The screw should be snug up to the plastic housing of the switch.)
Step | Procedure |
1Locate the three small holes on the
2Run a self test. The self test will print 15 gray scale boxes.
3Turn RP1 clockwise in
Consult Make Mechanical Adjustments to the Printhead if mechanical adjustments are needed to achieve the correct intensity level.
Persona C10/M10 ID Card Printer Service Manual (Rev. 4.0) | 93 |
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