Read Panasonic KX-NT511ARUW / KX-NT511ARUB Service Manual online
9
KX-NT511ARUW/KX-NT511ARUB
2. Handset call
Transmitting signal is input from handset microphone
input to IC101-K18, K19
A/D conversion, Gain adjustment by a built-in DSP of IC101.
Receiving signal input from IP Line
Gain adjustment and D/A conversion by DSP of IC101
IC101-V18, V19 output from output to handset speaker.
4.2.5.
Key Circuit
The key data is under the matrix control by IC205.
The key information output from LED_STB is input into KEYIN, when the key is pressed.
The HOOK key is independent from Key Scan Matrix and taken into the port singularly.
The key information output from LED_STB is input into KEYIN, when the key is pressed.
The HOOK key is independent from Key Scan Matrix and taken into the port singularly.
AGND
AGND
C381
C382
IC101
K18
K19
Handset
Jack
Jack
R314
C348
R317
R316
C356
C351
R311
R312
C352
R313
AGND
AGND
AGND
MICBIAS
C353
C354
C357
C358
D301
D302
HS_MICP
HS_MICM
C355
CL-HS_MICP
CL-HS_MICM
R315
C391
C392
AGND
AGND
AGND
AGND
AGND
AGND
AGND
D309
D310
L310
L311
AGND
AGND
L306
L305
AGND
AGND
AGND
AGND
C359
NC
C360
NC
C361
330p
D303
D4ED18R00008
D304
D4ED18R00008
HS_SPP
HS_SPM
CL-HS_SPP
CL-HS_SPM
M17
M18
【Ope PCB】
MIP
SPP
SPN
SPN
KEYIN[2]
KEYIN[0]
KEYIN[1]
KEYIN[4]
KEYIN[3]
KEYOUT[4]
KEYOUT[3]
KEYOUT[2]
KEYOUT[1]
KEYOUT[0]
*
12
9
12
1
12
REDIAL
12
0
12
7
12
#
12
5
12
3
12
8
12
6
12
4
12
2
12
ICM
12
FLASH
12
MUTE
12
CONF
12
TRANSFER
12
HOLD
12
SP-PHONE
12
FF1
12
FF2
12
FF3
12
UP
12
DOWN
12
KEYIN[5]
OPE_3.3V
SW1
HOOK SW
1
2
3
4
5
6
R405
SPAMPEN
IC101
T10
V9
U9
R9
W9
T9
V8
W8
T8
V10
U8
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