Kenwood TK-8180H Service Manual page 96

P
TX-RX UNIT (X57-6990-XX) (B/3)
DT
MM2
AM1
AF
C480
1000p
MIC AMP
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
R597 C530
R558 R606
220k 220k
10u
IC414
4
VSS
3
2.50V
2 R573 C511
*
1 3.3k 0.1u
D408
MA742
* R580
D409
MA742
* R581
D408,409
MIC AMP
AGC DETECTOR
C591
0.1u
AF MUTE SW
Q409
DTC363EU
AM2
4.93V
C519
1000p
C485
R559
0
0.018u
2.81V
C476
0.1u
T/R
R:4.90V
T:0V
R
TK-8180H/8182H
0
R603 C540
0 10u10
R589 R592 Q416,417
R586
MIC MUTE SW
0
0
MIC AGC
C539
R604
Q410
2SC4116(Y)
0 10u10
R:4.98V
T:0V
Q411
2SA1586(Y,GR)
MIC AGC
R579
22k
R576 C517
220k 0.01u
C492
R567
390k
0.1u
R531 C491 R566
R524
10k 10k 0.1u 1M
C507
0.1u
C499
820p
R583
0
A
C503
R673
18k 68p
A
A
1
25
AGNDIN
DTRAIN
R672 2 24
TXIN AMP4O
330k
3 23
AMP4N
TXINO
4
22
AMP4P
LIMLV
5
21
IC415
EXTLIMIN AMP3O
AQUA-L
6 20
MOD AMP3N
7 19
AMP3P
VDD
8
18
DTRLOADN
VSS
9
17
STD XIN
R582
1M
X403
3.6864MHz
L77-1965-05
CK
S
AF
MIC MUTE
CONTROL
D601
1SS388
C544
Q417 10u10
2SJ243
4.98V
4.83V
Q416
2SJ243 C543
10u10
MIC MUTE SW
4.88V
Q600
DTA144EE
R646
R620
220k
4.7k
MIC MUTE
CONTROL
D600
1SS388
R600
4.7k
2.49V
C596
R595
0.1u 270k
Q413
R537
2SJ243
100k
AF SW
2.49V
R584
0
R587 C525
150k 0.1u
R601
R607
470k
270k
C518
0.1u
R602
1M
R608
R599
180k
180k
AF SW
(VOICE)
Q415
AF
HN1L02FU
MUTE
SW
Q412
2SK1824
Q414
AF SW
2SJ243
LSDIN
R:4.92V
T:0V
STSW
RXC
OPT6
T
DT
AM1
AUDIH
AI
AM1
RXAO
RXAI
MI2
AFO
ME
89
X57-699 4/10