Bixolon SRP-270 User Manual

 

 
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] 

 

 
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. 

No. 

VOLTAGE 

DESCRIPTION 

1 

+24VDC 

Cash Drawer Solenoid Driving / Step Motor Voltage 

2 

+5VDC 

Logic IC Driving Voltage / Sensor