Kenwood TK-7180H Service Manual page 96

P
TX-RX UNIT (X57-6980-XX) (B/3)
DT
MM2
AM1
AF
C480
1000p
TC75W51FU
5
6
7
4.98V
8
VDD
V_REF
MM1
BEEP
AGND
LIMLV
AF SW IC
IC413
TC7MZ4053FK
1
16
1Y VCC
2 15
0Y
YCoM
3
14
1Z
XCoM
4
13
ZCoM 1X
5 12
0Z 0X
6 11
INH
A
7
10
VEE
B
8
9
GND C
LSDIN
STSW
RXC
CK
SCSW
MIC
ME
OPT6
Q
SCHEMATIC DIAGRAM
R558 R597 C530
220k 220k
10u
MIC AMP
IC414
4
VSS
3
2.50V
2 R573 C511
1
3.3k
0.1u
D408
MA742
R580
4.7k
D409
MA742
R581
4.7k
D408,409
MIC AMP
AGC DETECTOR
C591
0.1u
AF MUTE SW
Q409
DTC363EU
AM2
4.93V
C519
1000p
C485 R559
0.018u 0
2.81V
C476
0.1u
T/R
R:4.90V
T:0V
R
TK-7180H/7182H
R606
0
R603 C540
0 10u10
Q416,417
R592
R586 R589
MIC MUTE SW
470 0 0
MIC AGC
C539
R604
Q410
2SC4116(Y)
0
10u10
R:4.98V
T:0V
Q411
2SA1586(Y,GR)
MIC AGC
R579
22k
C517
R576
220k 0.01u
C492
R567
390k
0.1u
C491
R524 R531 R566
10k 0.1u
10k 1M
C507
0.1u
C499
R583
0
820p
R673 C503
68p
18k
A
A
25
1
AGNDIN
DTRAIN
R672
2 24
TXIN AMP4O
330k 3 23
TXINO AMP4N
22
4
LIMLV AMP4P
IC415
5 21
EXTLIMIN AMP3O
AQUA-L
6 20
MOD AMP3N
7 19
VDD AMP3P
DTRLOADN 18
8
VSS
9 17
STD XIN
R582
1M
X403
3.6864MHz
L77-1965-05
CK
S
AF
D419
1SS388
MIC MUTE
CONTROL
R618
220k
Q417
2SJ243
4.83V 4.98V
Q416
C543
2SJ243
10u10
4.88V
R620
220k
MIC MUTE SW
MIC MUTE
CONTROL
DTA144EE
D420
1SS388
R600
4.7k
2.49V
C596
R595
0.1u 270k
Q413
R537
2SJ243
AF SW 100k
2.49V
R584
0
R587 C525
150k 0.1u
R601 R607
C518
470k
270k
0.1u
R602
1M
R599 R608
180k 180k
AF
MUTE
SW
AF SW
(VOICE)
Q412
2SK1824
Q415
HN1L02FU
Q414
AF SW
2SJ243
LSDIN
R:4.92V
T:0V
STSW
RXC
OPT6
T
DT
AM1
C544
10u10
R665
4.7k
Q421
AUDIH
AI
AM1
RXAO
RXAI
MI2
AFO
ME
89
X57-698 4/10