FARGO electronic S000256 - Manual (Page 71)

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Calibrating the RP5 Potentiometer
Step Procedure
1 Before attempting to calibrate the RP5 potentiometer, the magnetic encoder
head must be plugged into the J100 connector.
2 A digital DC volt meter is also required. Set the meter to read in a range of 0-10
volts, DC.
3 Attach the black ground lead of the meter to the bare metal chassis of the Printer
and touch the red positive lead of the meter to the TP8 solder pad on the Main
Circuit Board, as shown below.
4 With power applied to the Printer, you should read 6 volts DC at TP8. This value
indicates that the magnetic head is calibrated for 2750 Oersteds.
5 To raise the Oersted level to 4000, adjust RP5 until the voltage reading at TP8
reads 8 volts DC. See the RP5 Magnetic Adjustment below.
Tp8
MAGNETIC HEAD
J100
Ch3 Ch2 Ch1
MAG
ADJUST
Rp5 .
Persona
® C25 Card Printer User Guide (Rev. 4.0)
71