Read Panasonic KX-NT400RU Service Manual online
54
KX-NT400RU
10.1.3. Analog Interface
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
KX-NT400RU : MAIN BOARD No.3 (1/2)
Vref
CC
DET
+
+
-
-
C
E
B
A
D
F
3
4
2
1
C303
K1
HS_OUT
002:10E
C317
3300p
nG722
AG
VCC_A33
AG
C352
+
-
220u/6.3V
Q304
E
C
B
AG
AG
1
2
3
4
5
+
-
6
7
8
SP_OUT
002:10E
AG
C325
330p
5
A
1
COM
6
Y2
7
Y1
VCC_A33
C322
33p
MUTE_SP0
002:10F
C304
K1
C324
33p
C323
330p
MIC_SW
002:10E
HS_IN
002:10F
MUTE_SP1
002:10F
11
S0
14
AN
13
A1
12
A0
AG
AG
9
S2
4
CN
3
C1
5
C0
1 SHUTDOWN
2
BYPASS
3 +IN
4 -IN
5
Vo1
6
VDD
7
GND
8
Vo2
C305
820p
nG722
AG
AC97_OUT
006:8G
Q307
E
C
B
AG
SIDE_TONE
002:10E
R302 47k
R309
10k
R319
3.3
R303
68k
R343
NC
R304
27k
R308
1.8k
R301
10k
1
2
4
MUTE_CE
006:3F
C320
K0.01
C301
K0.1
C312
K0.015
SIDE_TONE
C321
K0.1
R315
10k
C319
Z10
[2125]
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
C328
4700p
AG
MIC_IN
002:10F
C308 K0.01
C302
K1
nG722
R314
4.7k
VCC_A33
AG
VCC_A33
R307
300k
Q301
E
C
B
AG
R318
10k
R317
10k
C310
47p
AG
R316
20k
VCC_A33
R320
1k
R321
2.2k
C327
Z22
[2125]
AG
MIC_SW
C363 100p
AG
C365
100p
AG
C309
100p
C364
33p
AG
C366
100p
C367
K0.01
DG
C368
K0.01
AG
C307
K0.022
R312
8.2K
C354
NC
C313
33p
R305
33K
R345
47K
C306
K0.01
C311
K0.15
C356
K0.01
R306
8.2K
R344
100K
100K
R313
180K
C353
100p
C314
330p
C355
5600p
L:OFF
H:MUTE
H:MUTE
H:Normal
L:G.722
L:G.722
L:OFF
H:MUTE
H:MUTE
L:Handset
H:Headset
H:Headset
L:IC22_ON
H:IC22_OFF
H:IC22_OFF
IC22
IC29
IC28
IC28
IC21
IC30
IC23
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