Read Panasonic KX-DT343RU Service Manual online
6
KX-DT343RU/KX-DT343RU-B
4.2.
Circuit Operations
4.2.1.
Key Input Control Circuit
The key data is under the matrix control by 31 to 34, 50 to 52(KEYOUT) and 1, 2, 42 to 45, 63, 64(KEYIN) of IC1.
The key information outputted from KEYOUT is inputted into KEYIN, when the key is pressed.
The Hook key is independent from key scan matrix and taken into the port singularly.
The key information outputted from KEYOUT is inputted into KEYIN, when the key is pressed.
The Hook key is independent from key scan matrix and taken into the port singularly.
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