KX-TES824CA, KX-TEM824CA, KX-TE82461X, KX-TE82474X, KX-TE82480X, KX-TE82483X, KX-TE82491X, KX-TE82492X, KX-TE82493X, KX-A227X - Panasonic PBX Service Manual (repair manual). Page 127

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127
     KX-TES824CA/KX-TEM824CA
15.10. IC Data
15.10.1. IC6, IC7, IC8
Pin No.
Pin Name
I/O
Description
3
DHK1
I
DOOR Hook detection
4
DHK2
I
DOOR Hook detection
7
DHK3
I
DOOR Hook detection
8
DHK4
I
DOOR Hook detection
13
DCN1
I
DOOR Phone Connection Detection
14
DCN2
I
DOOR Phone Connection Detection
17
DCN3
I
DOOR Phone Connection Detection
18
DCN4
I
DOOR Phone Connection Detection
2
DOOR_SW1
O
Connect DOOR 1 to Port 1 
5
TONE_SW1
O
Connect Tone to Port 1
6
DOOR_SW2
O
Connect DOOR 1 to Port 2
9
TONE_SW2
O
Connect Tone to Port 2
12
DOOR_SW3
O
Connect DOOR 2 to Port 3
15
TONE_SW3
O
Connect Tone to Port 3
16
DOOR_SW4
O
Connect DOOR 2 to Port 4
19
TONE_SW4
O
Connect Tone to Port 4
2
BUSY1
O
Power Supply Function
5
BUSY2
O
Power Supply Function
6
BUSY3
O
Power Supply Function
9
BUSY4
O
Power Supply Function
12
DOPN1
O
Door Opener Control
15
DOPN2
O
Door Opener Control
16
DOPN3
O
Door Opener Control
19
DOPN4
O
Door Opener Control
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