Sharp ER-01PU Spezifikationen Seite 67

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Seitenansicht 66
8. RS-232 control
ER-OIPU
10. Power supply circuit
IC14
CPU
TXD1
b
t
RxDl
I
/DSK
IC4
MA)(2111CAI
SD
3
4
RD
2
5
.
RS
F
7
ER
4
4
Cs
8
4
DR
6
I 4
PSCN
D-SUB 9pin
One channel of the RS-232 connector is provided as a standard part
for communication with the host.
The CPU delivers the control signal through the driver/receiver IC to
the host, performing communication.
9. Selector circuit
IC14
CPU
{
IC19
AO-A18
27C040
DO-D15
IC20
HC244
DO-D7
S1
SW DIP-8
IC21
HC244
D8-D15
S2
SW DIP-8
m[-
J1 : Th-h~d
IC22
2
re
*Wbn
HC244
&: Therrneh~d
r~efce *eUbn
/JPFA: .lournel oeoer
D8-D15
.
feed motor drtie
741
pulee A
tC23A
74-
‘t
IRPFA.Rece@t paper
IC23B
feed molor drue
pulee A
‘%:~~=+:,m
I
/FUBU: Fiseh ROM
stete detestion
.1+s+=1
[
det&tbn
DOPEN:
Drawer open
IC24A
detesfion
7
74F02
HUR Wer ~d UP
detectbn
F1
F2
TIALI - T2.5ALJ
POWER 250v
NOISE
POWER
250V
SWITCH ~
FILTER
CIRCUIT
TRANSFORMER
SWITCHING
F3
REGURATOR T25~~50v
STR2124
SWITCHING
REGURATOR
+24V: PRINTER UNIT, DRAWER DRIVE CIRCUIT
+ 5V: Ic
The DIP switches are provided for switching various functions and the
selector IC (HC244) are provided for detecting various hardware
states.
12-9
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