BIXOLON SRP-270 Special Circuit Descriptions, Power Circuit, Logic IC Driving Voltage +5V

SRP-270

4-3 Special Circuit Descriptions

4-3-1 Power Circuit

This system is operated under 110Vac or 230Vac. The power circuit supplies the three differential DC voltage sources.

[Figure 4-3 Power Block Diagram]

No.	VOLTAGE	DESCRIPTION
1	+24VDC	Cash Drawer Solenoid Driving / Step Motor Voltage
2	+5VDC	Logic IC Driving Voltage / Sensor

1) Drawer Driving and Feed, Auto Cutter Motor Voltage : +24Vdc

+24VDC is supplied from SMPS. This Voltage is smoothed by capacitors (C1,6,39).

This voltage is used as a Printer Head, Printer Motor, Cash Drawer Solenoid Driving voltage and a source voltage of the +5V voltage sources.

2) Logic IC Driving Voltage: +5V

+5Vdc Logic driving voltage is produced by the step-down dc-dc converter U1(34063A). That is, U1 produces rectangular wave. This makes D2 (EK04) and L6 store energy. The voltage is smoothed by C8 (470uF) and then +5Vdc Logic voltage is produced.

Rev. 3.02 - 31 -