Dip Switch Read Circuit - Casio UP-250 Technical Manual

The +24 V drawer power supply is supplied via the regulator IC (U2), which cuts off the supply
in case of excessive current.
DKD
CN2
1
FG
2
DKD 1P
3
DKD SW
4
+24V
5
DKD 2P
6
SG

DIP switch read circuit

There are 8 switches in DIP switch bank 1 and 2 switches in DIP switch bank 2 that are status-
readable switches. Each signal is input to the CPU. The signal is read as LOW when the switch is
on, and HIGH when the switch is off.
QM5
1
9
7
5
3
1
0
U2
VI VO
G
N
+
D
C45
DC 24-30V IN
Figure 2-23 Drawer kick-out drive circuit
+5V { 5 V
D8
Q29
Q30
D8
8
R47
6
4
+5V
{ 5 V
2
R48 D46
R28
D2
C39
+
C16
— 48 —
U5
62
P32
63
P33
+5V
{ 5 V
R13
Q34
10
P63