Kenwood NXR-800 Service Manual page 141

A
CONTROL UNIT1 (X53-4130-10)
SC
BC8
BC1
BC2
SCR_PTT
GND
BC4
CLEAR
/CoDE
TXo
RXEo
RXEi
TXi
PoW
A
TXANTS_O
ANi_KEY
PToA
GND
A
A
SiDE_ToNE
DATA_iN
ToNE_Co
MiC_MUTE
PoW
CN3
DC8 1
8.0V
GND 2
A
DC8 3
DC8 4
5.0V
50MPU 5
50MPU 6
GND 7
DC8 8
K5 9
K4 10
K3 11
K2 12
K1 13
GND 14
STB1 15
GND 16
SR_DATA 17
GND 18
SR_CLK 19
GND 20
SR_oE 21
GND 22
PTT_TXD_SCM 23
SCM_EN 24
HooK_RXD_SCM 25
GND 26
oCXo_ST_G 27
PWR_ST_R 28
oCXo_ST_R 29
SB 30
VoLUME_IN 31
33AUD 32
33MPU 33
MiC 34
GND 35
MiG 36
CN1
PTT_TXD_SCM 1
GND 2
Lo_Vol_DET 3
NC 4
TD_SW 5
MiCAD_SW 6
MiC_SW 7
RXAD_SW 8
PATH_SW 9
BEEP_SW 10
R441 0
R442 0
R448 0 SCR_PTT
R449 0
PULL UP SWITCH
Q19
R457 HN1L02FU(F)
47k
R458
100k
0
R450
R451 0
R452 0
R453 0
R454 0
F1
Q20
F53-0315-05
2SA1955A-F
8.0V
POWER SW
POWER SW
Q21
DTC144EUA
D26,39
DIODE SWITCH A
D39
R470 0
R492 0 1SS388F ANi_KEY
D26
R495 0 PTT_TXD_SCM
1SS388F
Q25
DTC144EUA TX_ANT_SW
OP CONT SW
A A
DATA_iN
ToNE_CoNT
R461
POWER SW
Q23
10k
DTC144EUA
F2 Q22
A
2SA1955A-F
80ANi_CoNT
POWER SW
F53-0315-05
8.0V
L21
A
L5
L22
L6
R6 100
R7 0
R8 0
R9 0
R10 0
R11 0
R12 0
R13 0
R14 0
R15 0 PTT_TXD_SCM
R436 0
R16 0 HooK_RXD_SCM
R17 0 oCXo_ST_G
R437 0 PWR_ST_R
R18 100 oCXo_ST_R
R414 0
R19 100 VoLUME_IN
L7
L20
R407
3.3V
R2
FM-NARROW
MIC INPUT
5.5mVrms at 1kHz:52mVrms
R21 0
R22 0
R23 0
R24 0
R25 0
R26 0
R27 0
R28 0
R29 0
B
SHIFT
IC1
RESISTER
BU4094BCFV
STB 1 16
STRB VDD
2 15
DATA OE
SR_CLK 3 14
CLK Q5
4 13
Q1 Q6
5 12
Q2 Q7
6 11
Q3 Q8
7 10
Q4 QʼS
8 9
VSS QS
SR_oE
DATA_iN
TAAD_SW
MiC_SW
MiCAD_SW
MIC
MIG
MiC_SW
DC8
50MPU
K5
K4
K3
C63
R63
BEEP
K2
3.3k
0.1u
K1
STB1 DIODE
SWITCH
D38
1SS388F
SR_DATA
ANi_KEY
PTT_TXD_SCM
SR_CLK
SR_oE PTT_AM16C
SCM_EN
D25
MINISMDC020F
CURRENT
PROTECTOR
33SAUD
33MPU
0 MIC
0
MIG
50MPU
Lo_VoL_DET
TD_SW
MiCAD_SW
MiC_SW
RXAD_SW
PATH_SW
BEEP_SW
50MPU
0
R445
R446 0
0
R444
R443 0
A
63mV
C77
C78
A
457mV
C75 100p
R66 82k
MULTIPLEXE
BU4053BCFV
1
Y1
2
Y0
3
Z1
C72
4
Z
R536 1u 5
Z0
6
100k
INH
AND GATE 7
VEE
IC50
8
TC7SH08FU-F
VSS
1 5
INB VCC
2
INA
A A A
3 4
GND oUTY A
SB
DC50
3.3V
MUL
BU4
1
Y1
2
Y0
3
Z1
4
Z
5
Z0
6
INH
7
VEE
8
VSS
100
10u
O
1
2
3
4
IC2
VD
X
X
C80
0.1u
5.