Samsung SRP-350U, Service Manual

Page: 52 / 125

7-1
7 Special Circuit Descriptions
7-1 Power Circuit
Figure 7-1 Power Block Diagram
NO. VOLTAGE DESCRIPTION
1 V
DR
(+24VDC) Cash Drawer Solenoid Driving / Step Motor Voltage
2 V
CC
(+5VDC) Logic IC Driving Voltage
3 V
TPH
(+24VDC) Thermal Printer Head(TPH) Voltage
Table 7-1 Power Source Voltage Descriptions
7-1-1 Drawer Driving and Feed, Auto Cutter Motor Voltage : +24Vdc
!"#! $% &&&'(
!&!
7-1-2 Logic IC Driving Voltage: +5V
)*$++,)% -.( &,)
/-%01)2(* $)% '3(
)*
7-1-3 TPH Driving Voltage: +24Vdc
4%($516533%#-(#,
POWER
ADAPTER
+DC24V
VOLTAGE
REGULATION
CIRCUIT #1
V
DR
(+24V)
V
DR
(+24V)
V
CC
(+5V)
V
TPH
(+24V)
MAIN BOARD
VOLTAGE
REGULATION
CIRCUIT #2
VOLTAGE
REGULATION
CIRCUIT #3
Samsung Electro-M
e
chanics