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Circuit Description
Refer to OPE Circuit and Block Diagrams.
Signals from the key matrix are delivered to U300 X/Y input pin group @'l-X).
l
Connector P4 is NPO (No Power Operation) key matrix output.
l
l
Display from controller is received at U300 pin 5 (TX DATA).
l
LCD drive signals are U300 P2-X pin group, connector pin P2-1 - P2-3.
l
Machine status LED drive signals are U300 PO-X pin group.
l
. Paper empty sensor staturs delivers to U300 pin 39. (High: paper empty, Low: paper exists).
Connector
Reset
Figure 5-13 OPE Block Diagram
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