Panasonic KX-NT321RU (serv.man2) Service Manual ▷ View online
37
KX-NT321RU
KX-NT321
RU MAIN No.3 (2/2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
+-
+-
C
E
B
A
D
F
6
5
8
7
HD_SP
HD_MIC
HS_MIC+
HS_SP
HS_MIC-
HD_AG
A3.3V
IC24
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
AG
AG
Q14
E
C
B
AG
AG
A3.3V
C346
Z10
Z10
C350
Z22
Z22
A3.3V
AG
AG
A3.3V
C351
Z22
AG
L304
L303
SP1
AG
AG
L301
AG
AG
SP2_2
AG
MIC2_2
C355
K0.01
C356
K0.01
C340
K0.01
C358
1000p
C353
1000p
C354
1000p
AG
A3.3V
C359
Z0.1
MIC1+
MIC1-
IC28
16
6
7
8
CN4
1
2
CN5
1
2
L308
L309
MIC3
SP3P
SP3M
L310
0
C341
270p
C348
K0.082
C349
K0.082
C347
K0.082
HS_MIC+
HS_SP
JK4
HANDSET JACK
1
2
3
4
HD_SP
HS_AG
JK5
HEADSET JACK
1
2
3
4
5
2
3
4
5
HS_MIC-
HD_MIC
nG722
AG
C321
K0.22
AG
C323
K0.22
nG722
C344
K10
C343
K1
L302
AG
MUTE_SP2
C360
Z0.1
A3.3V
AG
IC29
8
4
2
3
IC28
10 S1
15 BN
15 BN
1
B1
2
B0
AG
Q11
E
C
B
Q13
E
C
B
L305
L306
CN8
1
2
3
4
5
6
7
8
9
CN7
1
2
3
4
5
6
7
8
9
C342
330p
C345
330p
R332
160k
160k
R339
10k
R346
150
150
R337
10k
R341
1k
R350
R336
12k
R348
2.7k
R338
10k
R314
10k
R343
1.8k
R344
2.2k
R349
R342
1k
R335
18k
R340
1k
R313
10k
R333
160k
R345
470
R334
160k
to SP
to MIC
L:OFF
H:MUTE
H:MUTE
38
KX-NT321RU
10.5. Main No.4
KX-NT321
RU MAIN No.4 (1/2)
C
E
B
A
D
F
3
4
2
LED_CO2_R
RA30 1k
LED5
SP-Phone
LED3
STORE
LED_CO2_G
LED_ANS
DG
Q2
1
2
3
4
5
DG
LED4
MESSAGE_R
SP_DATA
DG
SP_LCK
LED2
MUTE
DG
LED_DIAL
RA31
1k
D3.3V
DG
LED_MES_R
DG
LED_CO1_R
IC13
1
VSS
2
DATA
3
CLOCK
4
LCK
5
Q0
6
Q1
7
Q2
8
Q3
9
Q4
10
Q5
11
Q6
12
NC12
13
NC13
14
Q7
15
Q8
16
Q9
17
Q10
18
Q11
19
OE_B
20
VDD
SP_CLK
Q5
1
2
3
4
5
D3.3V
D3.3V
LED_SP
Q3
1
2
3
4
5
LED_CO1_G
Q4
1
2
3
4
5
LED_ICM
DG
DG
LED1
INT
LED6
CO8
LED7
CO7
LED8
CO6
LED9
CO5
LED10
CO4
LED11
CO3
LED12
CO2
LED13
CO1
Q1
E
C
B
C200
Z0.1
DG
C368
NC
R200
10k
R201
10k
R203
470
R204
1k
R207
220
R206
820
R205
1k
RA33
330
RA32
330
G
R
G
R
R
R
G
G
R
R
G
G
R
R
G
G
R
G
39
KX-NT321RU
KX-NT321
RU MAIN No.4 (2/2)
C
E
B
A
D
F
6
5
8
7
KEY_IN[0]
KEY_OUT[0]
KEY_OUT[4]
KEY_OUT[3]
KEY_OUT[1]
KEY_OUT[2]
KEY_IN[1]
KEY_IN[3]
KEY_OUT[5]
KEY_IN[4]
KEY_IN[5]
KEY_OUT[6]
KEY_IN[2]
A2
A4
B3
B0
B4
A1
A0
B2
B1
KEY_OUT[6-0]
KEY_IN[5-0]
A3
B5
DG
B6
SW14
CO6
SW30
Right
SW24
CO2
SW9
CO7
SW29
Up
SW23
9
SW36
SP_2
SW22
8
SW25
CO1
SW27
0
SW35
Down
SW7
Redial
SW18
6
SW10
CO8
SW13
3
SW5
Program
SW8
Trans
SW26
*
SW31
FLASH
SW28
#
SW4
Store
SW17
5
SW2
Intercom
SW1
Hook
SW34
Left
SW20
CO4
SW33
SP_1
SW12
2
SW6
Message
SW32
Hold
SW19
CO3
SW11
1
SW15
CO5
SW3
Mute
SW16
4
SW21
7
40
KX-NT321RU
10.6. Waveform
10.6.1. No. (1)-(6)
IC1 pin34 XTAL1
IC4 pin2 VIN
IC4 pin1 VOUT
IC1 pin46 DRCLK
(3) IC1 DR clock
(1) RESET SIGNAL
(5) X2 25MHz
CN6 pin9 XI (25MHz)
IC8 pin13 VIN
IC8 pin2 SW
D5.0V
(4) LCD CIRCUIT
CN6 pin4 RS/STB
CN6 pin5 SCK/E
CN6 pin5 SCK/E
CN6 pin6 DATA/RW
(2) X1 8.192MHz
CN6 pin5 SCK/E
(6) IC8 switching regulator
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