Tx-Rx Unit (X57-6990-10) - Kenwood TK-8180 Service Manual

AE
TK-8180
0.84V
TX PRE-DRIVER
C1 C2
R6 C3
R2
5.6 100p 220
1000p 100p
Q1
2SC5108(Y)
0.12V
T:7.81V
R:0V
8T
AM1
4.96V
R187
3.3k
C205
R186
4.37V
330 0.01u
IF AMP
Q172
0.84V
2SC5108(Y)
L187 C211
C209 R217
100n
0
0.01u 10p
0.07V
MI2
AFO
ME
66
X57-699 7/9
AF
SCHEMATIC DIAGRAM
TX DRIVER
1.12V
Q2
C9 2SC5192 C16
R28
6p 6p 0
0.61V
R11
2.7k
R77
TA75W01FU
1
OUT1
2
IN1-
3
IN1+
4
VEE
C76
DC AMP
FOR TX APC
4.99V
C215
18p
N:4.85V
CF171
L72-0986-05
W/N CF SW
D171
DAN235E
W/N CF SW
CONTROL
Q173
CF172
DTA114EE
L72-0998-05
W/N CF SW
CONTROL
Q174
DTC144EE W:4.96V
AG
IC1
RA30H4452M
POWER MODULE
H:3.44V H:13.02V
L:3.03V L:13.39V
R16
47
C21
R17
47
470p
VOLTAGE
PROTECTION
TX GATE SW
R19
Q3
150
DTC114EE
100k
IC71
8
VCC
7
OUT-B
6 R79
IN2-
5 220k
IN2+
470p
FM IF SYSTEM IC
IC172
TA31136FN
1 16
OSCIN
MIXIN
2 15
OSCOUT
GND
3 14
MIXOUT
N-REC
4 13
VCC
N-DET
5 12
IFIN
RSSI
6 11
DEC
IFOUT
7 10
FILOUT
QUAD
8 9
FILIN
AFOUT
C224
270p
W/N CF SW
C225
D172
270p
DAN235E
R198 R200
330k 3.3k
NOISE AMP
Q175
2SC4617(Q)
AH
TX-RX UNIT (X57-6990-10) (B/3)
ANT SW
D3
XB15A407A2GB
1.6V
ANT SW
DC AMP
FOR TX APC
R85 100k
IC72
TA75W01FU
1
8
OUT1 VCC
2
7
IN1- OUT-B
R81
3 6
IN1+ IN2-
4 5
100k
VEE
IN2+
HIGH/LOW
C77 470p
POWER SW
Q70
DTC114EE
R82
100k
4.99V
4.94V
W/N DISCRETE SW
Q178
DTA144EE
C231
82p
DET MUTE SW
Q176
2SK1824 C237
R205
RXDET
3.3k
22u6.3
R212
DMUTE
100k
D174
MA2S111
DET MUTE SW
CONTROL
R206
Q177
1k
DTC144EE
R109
1k
Q179
DTC144EE
Q177,179
W/N CF SW
CONTROL
D173 SQ NOISE-AMP
RB706F-40
DETECTOR
C228
0.1u
AI
C44
120p
8T
H:3.21V
L:1.19V
R89
100k
Q72
2SK1824
HIGH/LOW
POWER SW
AM1
RSSI
W/N
ASQ
MI2
AFO
ME