Panasonic KX-T7730CA - Exploded View and Replacement Parts List; Ic1

28
KX-T7730CA
13 Exploded View and Replacement Parts List
13.1. IC1
Pin No. Terminal Name I/O Function I/O Setting Description
1 RE0 I I LCD linage H:3line Model L:Other
2 TEST I - Vcc Connection
3OSC1 I -4MHz
4OSC2 O-4MHz
5 RESET I -
6 X1 I - Not used Vcc Connection
7X2 O-Open
8GND - -
9 D0 I/O O HS SM mute
10 D1 I/O O HF MM mute
11 D2 I/O O( I ) HF SM mute(This is also model code.)
12 D3 I/O O HF Relay
13 D4 I/O O HS power on
14 D5 I/O O HF power on (CS)
15 D9 I/O I HOLD Key L:Key press
16 D10 I/O O DO
17 D11 I/O O DCLR
18 D12 I I DI
19 D13 I I DI_INT
20 R00 I/O I KEY-IN0
21 R01 I/O I KEY-IN1
22 R02 I/O I KEY-IN2
23 R03 I/O I KEY-IN3
24 R10 I/O I KEY-IN4
25 R11 I/O I KEY-IN5
26 R12 I/O I KEY-IN6
27 R13 I/O I Hook-SW
28 R20 I/O O KEY/LED-COM0
29 R21 I/O O KEY/LED-COM1
30 R22 I/O O KEY/LED-COM2
31 R23 I/O O KEY/LED-COM3
32 R30 I/O I/O KEY-COM4
33 R33 I/O O( I ) LCD_Contrast1(This is also model code.)
34 R32 I/O O *LCD_Contrast0
35 R31 I/O I/O KEY-COM5
36 R40 I/O I Ring vol off
37 R41 I/O O LCD_CLK
38 R42 I/O O( I ) LCD_STB/(Model Code)
39 R43 I/O O LCD_DO
40 R60 I/O O LED0
41 R61 I/O O LED1
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