Key Input Control Circuit; Led Circuit - Panasonic KX-NT265X Service Manual

KX-NT265X / KX-NT265X-B
8.7.

KEY INPUT CONTROL CIRCUIT

The key data is under the matrix control by pin93 to 104 of IC1. The key information outputted from KEYOUT [5-0] is inputted into
KEYIN [5-0], when the key is pressed.
8.8.

LED CIRCUIT

The lighting of the LED is controlled by IC1.
The LEDs light up in a static lighting system.
<Controlled by I/O ports of IC1>
· LED1 : INTERCOM
· LED2 : AUTOANSWER
· LED3 : AUTODIAL
· LED4 : MESSAGE
· LED5 : SP PHONE
· LED12 : CO2
· LED13 : CO1
<Controlled by serial I/F of IC13>
· LED[6-11] : CO[8-3]
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