Chapter 2 Operating Principles
2-2.
Operation of Control Parts
2-29
CL-E720DT
(4)
Ope-pane circuit
The circuit consists of 1 LED (Green/Red), 4 switches (PAUSE, FEED, STOP and MENU) and
1 LCD.
The LCD is controlled by the signals send from the FPGA (U5). The backlight of LCD is
controlled by LCD/BKL-WHITE and LCD/BKL-ORANGE signals sent from the CPU (U1A).
The signals output from the switches are sent to the CPU.
The LED controlling signals are sent from the CPU and fed to the LED D201 via Q4 and Q5,
and the green LED (for power display) and red LED (for error display) are driven, respectively.
* In power saving mode, +3VIO and +5VIO are not supplied. For details refer to “
”.
4
J3
From
U5 (FPGA)
[SA Main PCB]
SW201
SW203
SW204
SW202
D201
LCD/SI
LCD/SCLK
LCD/CD
LCD/RST
LCD/nCS
LCD/BL-W
[SA Opepane PCB]
SW/PAUSE
SW/FEED
SW/STOP
SW/MENU
LED/GREEN
LED/RED
3
4
1
4
5
2
J201
6
7
8
9
10
11
12
13
14
15
16
17
LED
Red (Error)
Q201
DTC114EM
Q202
DTC114EM
J202
LCD
PAD201
PAD202
PAD203
LCD
Backlight
BL-W
BL-O
To/From
U1A (CPU)
Anode
Cathode
(White)
Cathode
(Orange)
Green (Power)
PAUSE
FEED
STOP
MENU
LCD/BL-O
Q4
DTC114TM
Q5
DTC114TM
3
4
1
5
2
6
7
8
9
10
11
12
13
14
15
16
17
LED0_G
LED1_R
LCDDAT
LCDCD
LCDSCK
nLCDRST
nLCDCS
LCD/BKL_ORANGE
LCD/BKL_WHITE
nSW0
nSW1
nSW3
nSW2
+3VIO
+5VIO
+5VIO
R208
R209
R210
+3VIO
+5VIO
+5VIO
+3VIO
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 ...