Peeler Circuit (For Optional Peeler) - Citizen CL-E700 series Technical Manual

(8) Peeler circuit (for optional peeler)

+5VIO is supplied to an optional peeler.
When a peeler is installed in the printer, pin D9 (CPTYP1) is set to "Low" level. With this "Low"
level signal, the printer recognizes that the peeler is connected to. (In reality, the FPGA (U5)
judges the connected optional device (either peeler or cutter) by detecting both signals
CPTYP0 (at pin D12) and CPTYP1 (at pin D9)).
A peel sensor detects that the printed label is peeled off by the peeler. Then, the printer stops
printing. When you remove the label, the peeler sensor detects it and the printer resumes
printing.
The peel sensor output signal (analog voltage) is input to pin 101 (SNSPEEL) of the CPU
(U1A). To the CPU, two kinds of signal levels are input depending on the peeling conditions,
whether the label is peeled off or it is removed by hand.
U5
FPGA
D12
CPTYP0
74_D12
(from the Cutter)
D9
CPTYP1
74_D9
U1A
CPU
AN7
* In power saving mode,
circuit".
L: When Peeler is installed.
+3.3V
R67
R68
C99
+3.3V
D3 R69
101
SNSPEEL
R70
[SA Main PCB]
+5VIO is not supplied. For details refer to
+5VIO
J4
J301
3-6
3-6
14 14
OPTION_TYPE1
7 7
15
15
PEELER SENS
[SA Relay PCB]
2-45
Chapter 2 Operating Principles
2-2.
Operation of Control Parts
J303
Peeler
1
NC
2
GND
3
CPRTYP1
4
+5VIO
+5VIO
5
PEELSENS
"2-2-6(1) Power supply
CL-E700 series