Block Diagram - Icom IC-9700 Service Manual

SECTION 9
IC51
CURRENT
DET
IDLP
F2
1 2
DC13.8V
Q31
PWRS
FI431
12RIF
BPF
Fc:351MHz BW:90MHz
Q423
5V
SW
12RXS
12TIF
IC271
12DAT,12CLK,12CE,12LE,12ULKL 12LOB
PLL
196.608MHz 12LOA
DCREF ATT
IC301
5V 3R3V
REG
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BLOCK DIAGRAM

PHV
URRF
HV
14V
Explanatory notes
CONTROL Line
COMMON Line
TX Line
RX Line
Voltage Line (HV)
Voltage Line (14V)
IC421 fc=800MHz
IC361
IF RF:1240~1300MHz
HPF LPF HPF
AMP
fc=251MHz fc=451MHz
ATT
12LOB:929MHz
HPF LPF
IC231
HPF LPF LPF
fc=1320MHz
HPF LPF ATT
12LOA:1605.632MHz
FI1191 Q1181 IC1161
RF PRE
HPF BPF BPF
AMP AMP
fc=390MHz fc=440MHz
UPONS
IC1162
5V
REG
URXS
PHV
P8V
IC101
UTRF 430~450MHz PRE
ATT
DRIVE
Q111
5V
SW UDIDV
UTXS
UHF_TX
PA-B UNIT
IC332 IC331 FI321
P.OFF
RF RF
BPF
SW SW
P.ON
ATT
12POFS 12POFS
Q321
12PONS 12PONS
5V
12RXS
1200_RX
1240~1320MHz
IC191
YGR
HPF LPF ATT
AMP
fc=1200MHz fc=1320MHz
Q195
5V
SW
12TXS
1200_TX
PA-C UNIT
9-1
D1121~D1124
ATT/ 430~450MHz
BPF HPF
MUTE
fc=440MHz fc=350MHz
UATONS
UTXS
UHF_RX
UTXS
Q201 Q301
DRIVE PWR
AMP AMP
IC211 IC211
BIAS UFIDV BIAS
HEAT
UTHML
SENSOR
12TXS
IC321 D326
PRE 1240~1300MHz
ATT HPF
AMP
fc=900MHz
12ATONS
SW
PHV
P8V
IC141 Q101 Q81
PRE DRIVE PWR
LPF
DRIVE AMP AMP
IC131
BIAS
12DIDV
IC131
HEAT
12THML
SENSOR
12FIDV BIAS
IC691
UFORL
BUFF
UHF ANT
IC691
UREFL BUFF
D401~D407 D501,D511
TX/RX SWR
LPF
SW DET
Q401~Q403
BIAS
Q701,Q702
PREAMP
14V
SW
UEPS
UEPL
IC51,Q51,Q52
IC20
RELAY
12FORL BUFF
CTRL
1200 ANT
IC20
12REFL BUFF
RL51 D801,D811
TX/RX SWR
SW DET
Q1,Q2
PREAMP
14V
SW
12EPS
12EPL