Epson TM-U675 - Switch Circuit

Appendix D-68 Product Overview Rev.D
Confidential
Switch Circuit
The 24V supplied from the external power source is supplied to the required locations in this
circuit. The supply power source and application are described below. The 5V system is
controlled by the same switch.
Figure D-65 Switch Circuit
Table D-14 Switch circuit
Type (circuit
network name)
Switch
(On/Off) Control Use
24VB OUTH GA (U30) Circuit power for impact head drive, autocutter drive,
MICR reading. ON at power up and cannot be turned
OFF.
24VC 24VSW1 GA (U30) Mechanical power for slip system and journal system.
24V(DM) None None DM power, DK power
VCC None None Starts after power switch is turned ON.
VCC-PWR 24VSW1 GA (U30) 5 V used for slip system and journal system.
VCC_SEN SEN_PWR CPU (U3) Power for paper detection sensor for slip system.
24VSW1
R96
1 2
Q45
1
23
C42
PN
C40
12
CN18
1
2
3
4
1
2
3
SH
C44
PN
24VSW1
C41
12
VCC-PWR2
Q44
1
2
3
4 5
6
7
8
S1
G1
S2
G2 D2
D2A
D1A
D1
MIN1
R94
1 2
C43
PN
Q17
1
23
24VB
SIN2-1
F2
1 2
D16
D1F20
1 2
Q24
2
3
1
SEN_PWR
VCC
CN29
1
2
1
2
R244
1 2
C605
PN
R176
1 2
R243
12
F1
1 2
D22
12
Q51
2
3
1
VCC_SEN
Q59
1
2
3 4
5
6
D1
D2
GS
D3
D4
Q46
2
3
1
24VSW2R245
12
L3
21
43
Q60
2
3
1
24VA
R207
1 2
R208
1 2
R177
1 2
Q61
1
23
D45
12
24VC
VCC-PWR