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FO-4450U/FO-CS1
5 – 18
SENB
SEN[7.0]
LD[7.0]
LEDEN1
LEDEN2
RS
R/XW
E
PAGE PLATE SW
KEY MATRIX
LED PWB
JOINT PWB
COG(LCD)
(2 LINES)
LS145
AHCT174
AHCT174
LD[3.0]
LD[5.0]
LD[5.0]
LD[7.0]
+5V
+5V
[5] Circuit description of operation panel PWB
1. Operational description
1) Operation panel PWB
The operation panel PWB includes the ten key scan circuit and the LED
lighting circuit.
The LS145 is controlled through LD0~LD3 (4 bits) and
ten key detection is performed. The HC174 is controlled through
LD0~LD5 (6 bits) to provide LED lighting information.
2) COG(LCD) (LMG2025-TPR)
The COG uses the one-chip LCD driver IC to display 20 digits x 2 lines.
The LCD display density is controlled with an external resistor.
Fig. 10
2. Block diagram
manuals4you.com
manuals4you.com
Содержание FO-4450
Страница 109: ...FO 4450U FO CS1 Control PWB parts layout Top side 6 16 F1 F2 F5 ...
Страница 110: ...FO 4450U FO CS1 Control PWB parts layout Bottom side 6 17 F100 F101 F102 manuals4you com manuals4you com ...
Страница 112: ...FO 4450U FO CS1 LIU PWB parts layout Top side 6 19 manuals4you com manuals4you com ...
Страница 113: ...FO 4450U FO CS1 LIU PWB parts layout Bottom side 6 20 ...
Страница 116: ...FO 4450U FO CS1 Printer PWB parts layout Top side 6 23 manuals4you com manuals4you com ...
Страница 117: ...FO 4450U FO CS1 Printer PWB parts layout Bottom side 6 24 ...
Страница 119: ...FO 4450U FO CS1 Power Supply PWB parts layout 6 26 The Power supply PWB of this model employs lead free solder ...
Страница 128: ...FO 4450U FO CS1 8 2 M E M O manuals4you com manuals4you com ...
Страница 169: ...FO 4450U FO CS1 41 MEMO justmanuals com ...