Tuner Unit - Icom IC-7300 Schematic Diagrams

BLOCK DIAGRAM (BLOCK DIAGRAM-1)
[DC 13.8V]
1
REVERSE
D202
CONNECT
DF30SC4M
PROTECT
IC211
J20012
INA199A2
1
EKEY
2
ESTA
[TUNER] 3 14V
4
P9V
Q101
3dB 2SK2854
RF
ATT
AMP
BIAS
MUTE
Q811
KTC2875
D811/D812
BAR64 x2
Q1001 LDTC143
D1001 1SV308
MUTE
T5V
D1021 IC1031 D1041
BAP70Q BGA2866 BAP70Q
PIN YGR PIN
ATT AMP ATT
ALC
MDAT/MCK
DSHK
/MSTB1
[ELEC-KEY]
SKYS
J851
Q101
LDTC143EE
SW
SW
CTRL
[SEND]
EALC
[ALC]
HV
2 Q221
TJ50S06M3L
14V
SW12
IC221
BA09FP
+9 P9V
ID REG
PWRS CTRL
DET
Q222 Q341/Q342
RUM002N02 LDTC143/LDTA114
IDL
P9V
CTRL T9V
TXS
Q111 Q121
RD01MUS2 RD15HVF1 Q131/Q132
RD70HVF1 x2
PRE PWR
DRIVE
DRIVE
AMP AMP
HEAT
SENS
BIAS BIAS BIAS
THML
T9V T9V DRIDV HFID1V
HFID2V
Q771-Q777
LDTC143 x7
IC751 Q781-Q787
L1S
DRESH SN74AHC595PW LDTA123 x7
L2S
PSTB L1S-L7S
L3S
MDAT I/O
L4S CTRL
MCK EXP
L5S
L6S
L7S
RPPS
T9V
fc=76 MHz
LPF
HAT13
18dB
ATT
HATOF13
1.60-74.80 MHz
Q1051
L2SC4081
HPF
D1051/D1052
BAR64 x2
ATT
Q1061/Q1062 IC1061
LDTA114/LDTC143 XC6209F502MR
DRIV
+5V 8V
CTRL
REG
TXS
B0S
B1S
Q1111-Q1261
B2S
LDTC143 x15
B3S
B0S-B12TXS B0-B12TX
B4S
B5S CTRL
B6S
IC1301-IC1303
B7S
SN74AHC595PWx3
B8S
Q1098/Q1110
B9S
I/O LDTC143/LDTA114
B10S
EXP
B11S
HATTS
B12S CTRL HAT13
B11TXS
B12TXS
DRESH
Q1097/Q1099
HATTS
LDTC143/LDTA114
HATOFS
HPOFS
HPR1S HATOFS CTRL HATOF13
HPR2S
Q1096/Q1095
LDTC143/LDTA114
HPOFS
CTRL HPON13
HSENI
Q1092 LDTC143 Q1094 LDTA114
HPR1S CTRL CTRL HPON13
Q1091 LDTC143 Q1093 LDTA114
D1091 L1SS400
HPR2S CTRL
CTRL HPR8
0.03-2.0 MHz
SW11 SW11
LPF
L1
2.0-4.0 MHz
SW11 SW11
LPF
L2
4.0-7.3 MHz
SW11 SW11
LPF
D961/D962
LRB751Sx2
SW11
L3
PWR/SWR
7.3-14.35 MHz DET
SW11 SW11
LPF
Q778
LDTC143
L4
14.35-21.45 MHz T/R
IC981
SW11 SW11
CTRL NJM2904CRB1
LPF
BUFF
L5
IC981
21.45-33.0 MHz
L1-L7 NJM2904CRB1
SW11 SW11
LPF BUFF
T9V
L6 RPPS
33.0-76 MHz
SW11 SW11
LPF
PA UNIT
L7
0.03-1.59 MHz
LPF
B0
1.60-30.00 MHz 1.60-1.99 MHz 15.00-21.99 MHz
LPF BPF
B1
2.00-2.99 MHz 22.00-29.99 MHz
BPF
B2
30.00-49.99 MHz
3.00-4.49 MHz 54.01-69.99 MHz
BPF
B3
4.50-6.49 MHz 50.00-54.00 MHz
BPF
B4
6.50-7.99 MHz 70.00-74.80 MHz
BPF
B5
8.00-9.99 MHz 50.00-54.00 MHz(TX)
BPF
B6
10.00-14.99 MHz 70.00-72.00 MHz(TX)
BPF
B7
e
SCHEMATIC DIAGRAMS
SW11
D1311/D1312 D1505
MMBD452
MMBD352 X2
130dB
SWR
ATT
DET
ATT
NATT1S
NATT1R Q1612 Q1611
IC1701
FORLP
BA2903 2SC4116 2SC4116
PHASE
BUFF BUFF
DET
REFLP
D1201
MMBD452
POWER
DET IC1701
BA2903
D1271
MMBD452
DPDDET
IMP
DET
HPR8
Q1411 2SC3356
Q1412/Q1413 LDTC143 x2
PRE
AMP
HPR1S
HPR2S
BPF
HPON13
B8
BPF
HPOF13
B9
IC1501
NJM13403
FORLP
ALC
BPF
AMP
POCV
B10
IC1501
NJM13403
APC METER
BPF REFLP
AMP
B11
Q1521
L2SA1576
ALC
BPF EALC
AMP
B12
IC1501
NJM13403
IDL
APC
BPF
AMP
ICCV
B11TX
Q3275/Q3276 Q1561 LDTA114
2SK3018/KTC4075 Q1562 KTC2875
BPF AMS ALC-CTRL
B12TX
Q1511 LDTA114
Q1512 LDTC143
Q1513 RUM002N02
Q3275/Q3276
2SK3018/KTC4075
NASBS ALC-CTRL
To upgrade quality, some components may be
subject to change without notice.
HF/50 MHz/70 MHz
ANTENNA
TUNE
NET
SW11
NATT2S
NATT2R
I/O IC2811-IC2841
EXP BU2092FVx4
IC1901
NJM2904CRB1
BUFF
SWRL
PHASEI
IC1901
NJM2904CRB1
TDAT/TCLK/TOE
BUFF TPWRL
TSTB1-TSTB4
To the MAIN UNIT

TUNER UNIT

IMPI
IREFV
RF
IC1501 NJM13403
Q1571 L2SC4081
ALC
ALC
AMP
IC1502
NJM2904CRB1
AMP ALCL
RF UNIT
A-7290-3EX-w
Printed in Japan
© 2015–2016 Icom Inc.