Panasonic KX-NT303X Service Manual ▷ View online
13
KX-NT303X / KX-NT303X-B
D3.3V
DG
X1
4MHz
1
2
3
DG
DG
D3.3V
DG
DG
DG
DG
R9 100
R7 NC
R13
56k
C4
Z0.1
R12
10k
C3
Z0.01
D
R8
33K
2
VDD
CN1
3
VDD
1
VDD
5
GND
4
GND
6
OP_DET
7
RESET_OUT
8
TXD
9
RXD_OPT
10
SCLK_OPT
11
Rx_RDY
12
GND
IC1
1
P12
2
P11
3
P10
4
P47
5
P46
6
P45
7
P44
8
P43
9
P42
10 P41
11 P40
13
IC0
14
X2
15
X1
16
VSSO
17
VDDO
18
XT2
19
XT1
20
RESET
21
P30
22
P27
23
P26
26
BUSY
27
RXD
28
TXD
29
SCLK
30
P07
31
P06
32
P05
33
P04
34
P03
35
P02
36
P01
38
VDD1
39
VSS1
40
P17
41
P16
42
P15
43
P14
44
P13
12
P31
24
P25
25
P24
37
P00
R11 NC
R10 NC
C5
Z0.1
C2
6.3V/100u
D3.3V
C1
Z0.1
DG
C6
220p
DG
R14 100
R15 100
R16 100
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
KX-NT303X / KX-NT303X-B : MAIN BOARD (2/2)
(1)
(2)
14
KX-NT303X / KX-NT303X-B
9.2.
Waveform
15
KX-NT303X / KX-NT303X-B
10 Printed Circuit Board
10.1. Component View
10.2. Bottom View
C2
C1
IC1
RA1
X1
D
R14
1
CN1
2
R13
C4
11
12
R15
R12
Q5
Q4
Q3
Q2
Q1
R8
C3
C6
R11
R1
R2
R4
R6
R3
R5
R10
R7
R16
R9
C5
DG
PbF
PSUP1638Z
A
KX-NT303X/KX-NT303X-B
COMPONENT VIEW
SW12
SW11
SW10
SW9
CO12
LED12
CO11
LED11
CO10
LED10
CO9
LED9
SW8
CO8
LED8
SW7
CO7
LED7
SW6
CO6
LED6
SW5
CO5
LED5
SW4
CO4
LED4
SW3
CO3
LED3
SW2
CO2
LED2
SW1
CO1
LED1
KX-NT303X/KX-NT303X-B
Bottom View
16
KX-NT303X / KX-NT303X-B
11 Appendix Information of Schematic Diagram
Note:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
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