Panasonic KX-NT366RU (serv.man2) Service Manual ▷ View online
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KX-NT366RU/KX-NT366RU-B
4.2.7.
Sub-CPU (IC4, IC5)
IC4 controls KEY, LED, and LCD. IC5 controls Self-labeling.
A reset signal from the VoIP(IC1) starts either reset or normal operating.(L:RESET)
The SUB-CPU and VoIP are connected by a serial communication.
IC4 checks the presence of IC5 by getting the signal from IC5.
A reset signal from the VoIP(IC1) starts either reset or normal operating.(L:RESET)
The SUB-CPU and VoIP are connected by a serial communication.
IC4 checks the presence of IC5 by getting the signal from IC5.
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KX-NT366RU/KX-NT366RU-B
4.2.8.
Key Input Control Circuit
The key data is under the matrix control by IC4.
The key information outputted from KEYOUT is inputted into KEYIN, when the key is pressed.
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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KX-NT366RU/KX-NT366RU-B
14
KX-NT366RU/KX-NT366RU-B
4.2.9.
LED Circuit
The lighting of the LED is controlled by IC4.
The LED lights up in a dynamic lighting system.
The duty ratio is 1/8 (ON time 1.5ms).
The LED lights up in a dynamic lighting system.
The duty ratio is 1/8 (ON time 1.5ms).
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