83
SCHEMATIC DIAGRAM
NX-210(G)
TONE
BEEP
MM
RXAF
AMT
/SCSW
/SCSW
OPT6
MIC
MOD
STSW
TONESW
RXEI
DTI
TXI
OPT9
RXEO
AO
AI
TXO
VOX
1
CoMMoN
2
INH
3
VEE
4
GND
5
A
6
CH1
7
CH0
8
VCC
C836
0.01u
R850
1k
R816
4.7k
R826
10k
R821
100k
C814
0.01u
C812
0.01u
C808
0.01u
R813
10k
R805
47k
C826
0.01u
R835
330k
R834
330k
C825
0.01u
R833
220k
C805
0.1u
C819
0.01u
R829
560k
R832
47k
C806
0.1u
R853
1k
R858
47k
R860
47k
C852
0.01u
1
CoMMoN
2
INH
3
VEE
4
GND
5
A
6
CH1
7
CH0
8
VCC
C813
0.01u
C807
0.01u
R807
47k
R815
10k
R824
330k
C816
0.1u
C880
10p
R896
270k
1
IN+
2
VSS
3
IN-
4
oUT
5
VDD
C876
0.01u
R875
10k
C854
0.1u
C853
0.1u
C869
1u
C868
1u
R876
10k
R886
0
IC803
BU7242NUX
1
oUT
A
2
IN-A
3
IN+A
4
VSS
5
IN+B
6
IN-B
7
oUTB
8
VDD
C827
0.1u
R823
22k
R820
22k
C820
330p
C810
1500p
R825
22k
C823
330p
R827
22k
R828
22k
C815
1500p
1
oUT
A
2
IN-A
3
IN+A
4
VSS
5
IN+B
6
IN-B
7
oUTB
8
VDD
C834
0.01u
R841
18k
R843
120k
R854
47k
C840
47p
R845
0
R844
100k
R839
100k
C839
47p
R849
33k
1
oUT
A
2
IN-A
3
IN+A
4
VSS
5
IN+B
6
IN-B
7
oUTB
8
VDD
C892
0.01u
C883
0.1u
R889
1M
C889
0.1u
R923
100k
SSM3K15TE(F)
Q811
C877
1u
C878
15p
R903
47k
R883
0
R893
47k
C879
68p
R914
100k
R926
470
C888
1u
R927
1.8k
R892
680k
C901
1u
R894
0
C902
10u10
R907
33k
R915
1k
R900
15k
R877
100k
C896
0.1u
C872
0.22u
C887
0.039u
R918
4.7k
R904
68k
R930
100k
C874
0.01u
C904
470p
R809
22k
C845
0.01u
IC808
74HC1G66GW
1
IN/oUT
2
oUT/IN
3
GND
4
CoNT
5
VCC
C847
0.1u
R836
18k
1
IN+
2
VSS
3
IN-
4
oUT
5
VDD
C821
0.1u
C824
1200p
R830
10k
C832
6800p
C811
0.1u
C844
4.7u
CN802
CN801
C843
4.7u
C809
1200p
R812
56k
1
IN+
2
VSS
3
IN-
4
oUT
5
VDD
R831
0
C802
1u
R808
56k
C803
0.1u
1
CoMMoN
2
INH
3
VEE
4
GND
5
A
6
CH1
7
CH0
8
VCC
R837
47k
C835
0.01u
C804
0.1u
R848
1k
C842
0.1u
R851
470k
R852
470k
C846
10p
C867
0.01u
R869
100k
C865
1000p
1
oUTA
2
IN-A
3
IN+A
4
VSS
5
IN+B
6
IN-B
7
oUTB
8
VDD
C866
1u
R872
100k
R856
0
R842
0
R846
47k
C838
0.1u
R847
150k
C829
0.1u
R838
100k
R840
100k
C837
0.1u
R885
39k
R912
560k
R905
560k
C890
0.1u
R857
560k
R855
82k
R810
15k
R811
6.8k
R890
470k
1
IN+
2
VSS
3
IN-
4
oUT
5
VDD
R871
68k
R874
10k
C863
47p
C886
0.1u
C801
0.1u
R906
12k
R865
5.6k
R868
27k
C860
0.01u
R814
68k
R804
0
R859
0
R878
68k
R879
68k
C856
0.022u
DI
DAC_23
MODULATION
LPF
MIC SW
CONTROL
MIC SW
5A
33M
SCTAMI
ME
RXD
TXD
INTMIC
SB2
31BU
SBC_ASIC
/BINT
/PSW
33M
SBC_ASIC
/BINT
TXD
SCTAMI
INTMIC
RXD
SB2
ME
31BU
/PSW
ME
15M
15M
5A
5A
33A
5A
33A
33A
VREF
VREF
VREF
IC804
BU7465HFV
MIC AMP
D802
KDR731
DETECTOR
2SA1832(GR)F
Q804
MIC AGC
2SC4738(GR)F
Q803
MIC AGC
D801
KDR731
DETECTOR
IC813
BU7242NUX
VOX AMP
IC812
BU7465HFV
VOX AMP
IC807
BU7242NUX
MOD/MIC
SUMMING AMP
IC805
TC7W53FK(F)
RX AF SW
IC809
BU7242NUX
1.65V REF/
RX SUMMING AMP
IC814
BU7465HFV
AF AMP
C818
180p
C817
0.1u
IC802
BU7465HFV
RX AF LPF
SSM3K15TE(F)
Q801
TONE SW
IC810
TC7W53FK(F)
OPT SW
IC806
TC7W53FK(F)
SIDETONE MUTE
D804
KDS123E-P
VOX AMP
D803
KDR731
DETECTOR
2SJ347F
Q812
MIC SW
2SJ243-A
Q807
MIC MUTE
15M
5A
33A
33A
33A
PSRIF
PSRIF
R965
0
WITH UNIV:2.97V
WITHOUT UNIV:0.14V
X57-927 5/11
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TX-RX UNIT (X57-9270-12)