Model 750
Series 700
Maintenance Manual
Page 26
Rev H
Adjusting the Black Dot Sensor
The black dot sensor is adjusted by using a voltage meter to measure the setting at
which the sensor is designed to be operational. This voltage can be adjusted by turning
the blue potentiometer screw on the circuit board. The circuit board is mounted to the
Print Mechanism. For proper ticket advancement, the voltage of the potentiometer
should read 1.6 V.
1.
Disconnect the printer’s power.
2.
Remove the Printer Chassis Assembly from the Main Chassis Assembly.
DO NOT disconnect the harness from the assembly.
Figure 12 Black Dot Sensor Adjustment: Removing the Printer Chassis Assembly
Potentiometer
JP1 2pin
Connector is located on
bottom of Black Dot/Top
of Form circuit board.
