Read Panasonic KX-DT590RU / KX-DT590RU-B Service Manual online
7
KX-DT590RU/KX-DT590RU-B
KEY Input control timing chart
KEYIN pins have a internal pull-up resistor.
KEYIN pins have a internal pull-up resistor.
If KEY is pushed, low level is latched by connecting KEYOUT(output high) and KEYIN. If not, high level is latched.
The value is fixed by reading twice.
The value is fixed by reading twice.
4.2.3.
LED Circuit
The lighting of the LEDs is controllerd by IC1.
The LEDs light up in a dynamic lighting system.
The duty ratio is 1/8 (ON time 1.8ms).
The LEDs light up in a dynamic lighting system.
The duty ratio is 1/8 (ON time 1.8ms).
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