Kenwood NXR-700 Service Manual page 121

F
TX UNIT (LED)
(X56-3110-XX) (B/3)
SHIFT-REGISTER
IC923
BU4094BCFV
1
STRB VDD
2
DATA OE
3
CLK Q5
4
Q1 Q6
5
Q2 Q7
6
Q3 Q8
7
Q4 QʼS
8
VSS QS
C920
0.1u
3-STATE BUFFER
IC920
TC7SET126FU-F
R921 4 3
oUTY GND
2
0
INA
5 1
VCC G
C931
1u
C930
R950 R942
8.2k 0
1u
AF AMP
Q931
2SC4116(Y)F
R944
AF AMP
Q932
2SA1586(Y)F
R945
Note : The components marked with a dot (
G
SCHEMATIC DIAGRAM
16
15
14
13
12
11
10
9
3-STATE BUFFER
IC922
TC7SET126FU-F
R922 4 3
oUTY GND
0 2
INA
5 1
VCC G
3-STATE BUFFER
IC921
TC7SET126FU-F
R923 4 3
oUTY GND
0 2
INA
5 1
VCC G
OP-AMP
IC926
NJM2732V
1 8
AoUTPUT
V+
2 A-INPUT 7
BoUTPUT
3 A+INPUT 6
B-INPUT
4 GND 5
B+INPUT
DETECTOR
D933
HSM88AS-E
C936
1k
0.1u
DETECTOR
D934
HSM88AS-E
C935
1k
0.1u
•
) are parts of layer 1.
H
SHIFT-REGISTER
IC924
BU4094BCFV
1 16
STRB VDD
2 15
DATA OE
3 14
CLK Q5
4 13
Q1 Q6
5 12
Q2 Q7
6 11
Q3 Q8
7 10
Q4 QʼS
8 9
VSS QS
FINAL UNIT(MIC SECTION)
(X45-3810-XX)(E/5)
CN923 CN905
1
1 VoLUME_IN
2
C915
2 33MPU R911
3
0
3 GND 100p
4 R912
4 33AUD
5
5 SB 0 R909
6
6 SCM_EN 0
7
7 GND
8
8 PTT_TXD_SCM
9
9 HooK_RXD_SCM
10
10 MIG
11
11 MIC
I
NXR-700
SHIFT-REGISTER
IC925
BU4094BCFV
1 16
STRB VDD
2 15
DATA OE
3 14
CLK Q5
4 13
Q1 Q6
5 12
Q2 Q7
6 11
Q3 Q8
7 10
Q4 QʼS
8 9
VSS QS
VR902
R31-0668-05
R906 R905 C905 R900
0 0 0
10u
R902
0
J901
R914 2.2k
1 NC
2 SB
3 GND
4 PTT_TXD_SCM
R901 1.8k
5 MIG
6 IC
R910 1.8k
7 HOOK_RXD_SCM
8 SCM_EN
L900
X45-381 (E/5) 1/1, X56-311 (B/3) 2/2
J
1
2
3
4
5
6
7
109