Read Panasonic KX-NT400RU Service Manual online
56
KX-NT400RU
10.1.4. SUB-CPU , LED , KEY SCAN , Bluetooth Interface
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KX-NT400RU : MAIN BOARD No.4 (1/2)
D
F
E
C
B
A
G
4
5
7
6
3
2
R_LED[6-2]
KEYIN[8-1]
C_LED[10-9]
KEYIN[8]
KEYIN[7]
KEYIN[6]
KEYIN[5]
KEYIN[3]
KEYIN[1]
C_LED[9]
R_LED[2]
R_LED[3]
R_LED[4]
R_LED[5]
R_LED[6]
KEYIN[1]
KEYIN[2]
KEYIN[3]
KEYIN[4]
KEYIN[5]
KEYIN[6]
KEYIN[7]
KEYIN[8]
R_LED[4]
R_LED[5]
R_LED[6]
C_LED[10]
C_LED[9]
KEYIN[4]
R_LED[2]
R_LED[3]
C_LED[10]
KEYIN[2]
DG
DG
DG
DG
LED403
SPPHONE
DG
DG
DG
VCC_D33
DG
VCC_D33
DG
Q401
1
2
3
4
5
LED401
MW
1
2
3
4
C424
NC
C423
NC
LED402
MW
1
2
3
4
VCC_D33
RA401
1k
RA402
1k
RA403
33
RA404
33k
DG
DG
Q403
4
3
5
1
6
2
Q402
4
3
5
1
6
2
IC4
R404
33k
R401
1.2k
R403
33
R407
33k
33k
R409
33k
R420
15
R424
15
R402
33k
SW422
HOOK
C401
K0.1
C427
K0.1
Q404
R410
47
R411
47
SW406
6
SW405
5
SW408
8
SW409
9
SW404
4
SW407
7
SW415
SPPHONE
SW414
HOLD
SW419
LEFT
SW418
DOWN
SW403
3
SW401
1
SW410
SW412
#
SW402
2
SW411
0
SW413
TRANS
SW417
UP
SW421
ENTER
SW416
CANCEL
SW420
RIGHT
R
G
R
R
G
G
1
X1
2
X2
3
VSS
4
OSC2
5
OSC1
6
TEST
7
VCC
8
RES
9
P20
10
SCK1
11
SI1
12
SO1
13
SCK3
14
RXD
15
TXD
16
P27
17
P17
18
IRQ2
19
IRQ1
20
P14
21
P13
22
P12
23
P11
24
P10
25
PA3
26
PA2
27
PA1
28
P50
29
P51
30
P52
31
P53
32
P54
33 P55
34 P56
35 P57
36 P60
37 P61
38 P62
39 P63
40 P64
41 P65
42 P66
43 P67
34 P56
35 P57
36 P60
37 P61
38 P62
39 P63
40 P64
41 P65
42 P66
43 P67
44 P70
45 P71
46 P72
47 P73
48 P74
49
P75
50
P76
51
P77
52
P80
53
P81
54
P82
55
P83
56
P84
57
P85
58
P86
59
P87
60
TONED
61
VTref
62
AN7
63
AN6
64
CVCC
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