Chapter 2 Operating Principles
2-2.
Operation of Control Parts
2-33
CL-E720DT
(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.
* In power saving mode, +5VIO is not supplied. For details refer to “
”.
J303
Peeler
CPTYP1
74_D9
D9
R67
C99
R68
+3.3V
D3 R69
+3.3V
R70
L: When Peeler is installed.
NC
GND
CPRTYP1
+5VIO
PEELSENS
SNSPEEL
[SA Main PCB]
3
2
1
5
4
+5VIO
OPTION_TYPE1
PEELER SENS
14
J4
15
7
14
15
7
J301
[SA Relay PCB]
3-6
3-6
AN7
CPU
U1A
FPGA
U5
101
+5VIO
CPTYP0
74_D12
D12
(from the Cutter)
Summary of Contents for CL-E720DT
Page 1: ...Technical Manual CL E720DT Direct Thermal Barcode Label Printer ...
Page 5: ...Chapter 1 Specifications 1 1 CL E720DT CHAPTER 1 SPECIFICATIONS ...
Page 15: ...Chapter 2 Operating Principles 2 1 CL E720DT CHAPTER 2 OPERATING PRINCIPLES ...
Page 75: ...Chapter 3 Disassembly and Maintenance 3 1 CL E720DT CHAPTER 3 DISASSEMBLY AND MAINTENANCE ...
Page 119: ...Chapter 4 Troubleshooting 4 1 CL E720DT CHAPTER 4 TROUBLESHOOTING ...
Page 131: ...Chapter 5 Parts Lists 5 1 CL E720DT CHAPTER 5 PARTS LISTS ...
Page 159: ...Chapter 5 Parts Lists 5 29 CL E720DT DRAWING NO 7 Unit Opepane Rev 0 ...
Page 162: ...Chapter 5 Parts Lists CL E720DT 5 32 DRAWING NO 8 Accessories Rev 0 3 2 1 1 1 2 1 3 ...
Page 164: ...Chapter 6 Circuit Diagrams 6 1 CL E720DT CHAPTER 6 CIRCUIT DIAGRAMS ...
Page 183: ...Appendices AP 1 CL E720DT APPENDICES ...
Page 186: ...Appendices A Mounting Diagrams CL E720DT AP 4 2 Solder side ...