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KX-NT343RU (serv.man2) - Panasonic PBX Service Manual (repair manual). Page 10

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10
KX-NT343RU/KX-NT343RU-B
4.2.6.
Sub-CPU (IC4)
IC4 controls KEY, LED, and LCD.
 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.
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