Kenwood TKR-D710 Service Manual page 99

P
TX-RX UNIT (X57-894K-01)
50C
LPF
C616 C620
47p 18p
L604 L605
C623
330n 390n
0.01u
Q602
2SC4617(R)
RF AMP
1.16V
Vref
Vref -->
CN601
MB
MB -->
MO -->
450kHz -->
R425
18k
IF AMP
IC404
MCP6021-E/OT
33C
W_/N
VN_/N
19.2MHz -->
19.2MHz -->
VT2 -->
VT1 -->
Q
SCHEMATIC DIAGRAM
16.8MHz-->
4.96V
3.02V
C636
4.94V
1.70V 2.37V
0.01u
Q603
2SC4617(R)
C630 R625 C633
RF AMP
0.01u 220 0.01u
R615 R620
27k 0
OP AMP
IC603
TC75S51FE(F)
R616 1 5
IN+ VDD
10k 2
VSS
R617 3 4
IN- oUT
100k
C631
10p
R624
220k
R634 R637
47k 47k
OP AMP
IC605
TC75S51FE(F)
C638 1 5
IN+ VDD
1u 2
VSS
3 4
IN- oUT
Vref -->
R429
22 C429
3.25V
0.1u
ANALOG SW
IC405
TC7W53FK(F)
1 8
CoMMoN VCC
2 7
INH CH0
3 6
VEE CH1
4 5
GND A
C428 R431
0.1u 0
C430
AW:-98.4dBm
AN:-99.0dBm
0.1u
VN:-100.2dBm
ANALOG SW
IC406
TC7W53FK(F)
1 8
CoMMoN VCC
2 7
INH CH0
3 6
VEE CH1
4 5
GND A
33C
W_/N
VN_/N
R
OSC
X600
<--16.8MHz
L77-1960-15
R632 C641 3
oUTPUT GND
1.8k 0.01u
3.27V
4
VCC VC
3.26V
C642
0.1u
OP AMP
IC604
LMC7101BIM5
R629
100k
MO
CN603
1.63V
R642
3.27V
100k
OP AMP
IC606
LMC7101BIM5
R643
100k
33C
W:3.28V
N:0V
VN:0V
W_/N
3.27V
CF401
L72-1028-05
R433
0
WIDE
W:3.28V
N:0V
VN:3.28V
VN_/N
CF402
L72-1027-05
R434
0
NARROW
CF403
L72-1041-05
R435
0
VERY NARROW
S
TKR-D710
MB_CV2
CN602
1.48V
2
1
DC SW
7.93V 7.27V
Q605
R649 2SC5383-T111
0
7.91V
R651
1k
C649
0.1u
450kHz -->
ANALOG SW
IC407
TC7W53FK(F)
5 4
A GND
R442 6 3
CH1 VEE
820 7 2
CH0 INH
8 1 R447
VCC CoMMoN
0
C438
0.1u
ANALOG SW
IC408
R443
TC7W53FK(F)
820 5 4
A GND
6 3
CH1 VEE
7 2
CH0 INH
8 1
VCC CoMMoN
R444
1.2k
T
16.8MHz-->
33C
TXVCOB
80C_1
TXVCOA
80C
33C
C439
0.1u
19.2MHz -->
19.2MHz -->
VT2 -->
VT1 -->
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