Block Diagram - Icom IC-7610 Service Manual

SECTION 8

BLOCK DIAGRAM

DID1V
IC151
PDIDV BUFF DID2V
3 dB
Q101
TO RF
PRE
YGR
ATT
DRIVE
IC411
CURRENT
DET
DIDL
F2
1 2
DC 13.8 V
Q432
PWRS CTRL
1
KEY
2
START
TUNER 3 +14V
4
PA UNIT
Q2014, Q2061, Q2062
IC2405
ALC
ALC CTRL
ALC
AMP
IC2405 IC2405
ALC
ALC
–12V
AMP
AMP
IC2407
IC2405
ALC
ALCL
AMP ALC
AMP
IC2407
ALC
DPALCL
Q2012, Q2016
AMP
IC2407
ALC
AMP
IC2407
ALC
AMP
Q2010
ALC
AMP
MAIN UNIT (ALC BLOCK)
IC351
IC251
BUFF FID1V BUFF
IC351
IC251
BUFF FID2V BUFF
Q201, Q202 Q301, Q302 RL402
DRIVE PWR
AMP AMP
L1S
3.5 M/3.8 M/4.63 MHz
HEAT
RL352
SENS
THML
L2S
RL252
IC401
CURRENT
DET
L3S
10 M/14 MHz
RL152
FIDL
HV
L4S
Q431
18 M/21 MHz
RL302
+14V
L5S
24 M/28 MHz
RL202
PSTB
L1S L6S
MCK IC941
L2S
MDAT RL102
L3S
DRESL SHIFT
L4S
REGISTER
L5S
L6S
L7S L7S
IC1301
+5V
NASBS +14V
DC-DC
IC1051
FORLP
+3R3V
POCV
DC-DC
ALC
AMS
CTRL
IC1401
+8V
DC-DC
REFLP
+8V
PFIDL
ICCV
EALC
8-1
TO RF
RX_B
Q561, D561, D562
RL
RX_A
MUTE
T8V
1.8 MHz D301, D302
RL401
PWR/SWR
LPF
DET
30 dB Q503
RL351
M/M T/R
LPF
COUPLER CTRL
5 M/7 MHz
RL251
T8V
24 dB
LPF
ATT
RL151
LPF
TO MAIN
RFMON IC351
BUFF FORLP
RL301
LPF
IC351
BUFF REFLP
RL202
LPF
50 MHz
RL101
LPF
IC1001
HV H4V
USA5V HV
DC-DC
USA5V
+3R3V
IC1171
CAPONS
+2R5V
+2R5V
REG
IC1181
+1R5V
+1R5V
REG
+8V
IC1351
–12V
–12V
DC-DC
UPWS
IC1241
+5V
+5V
REG
FPWS
PWRS
MAIN UNIT (REG BLOCK)
PWRS
TUNER
NET
NATT1S NATT2S NL0S~NL9S, NL0R~NL9R
NATT1R NATT2R NC1S~NC9S, NC1R~NC9R
NCINS, NCINR, NCOUTS
NCOUTR, NCREDS, NCREDR
D1505, D1506
10 dB
SWR
ATT
DET
IC1901
BUFF SWRL
D1201
IC1901
POWER
BUFF TPWRL
DET
IC1701,
D1311, D1312
Q1621 Q1611
PHASE
BUFF BUFF
DET
D1271, IC1701
POWER
IMPI
DET
IREFV
PHASEI
TUNER UNIT
IC1101
H3R3V
H3R3V
REG
IC1251
IC1111
H1R18V
H1R18V
DC-DC
BACK-UP
CTRL
IC1191
+2R5V
H2R5V
REG
Q1122
SW SD3R3V
SDPWS
H4V
IC1131
USB3R3V
USB3R3V
REG
IC1141
F3R3V
F3R3V
REG
IC1161
AD3R3V
AD3R3V
REG
IC1201
+1R1V
+1R1V
DC-DC
ANT1 ANT2
RL
ANTS
IC2811, IC2821
IC2831, IC2841
TDAT, TCLK, TOE
SHIFT
TSTB1~TSTB4
REGISTER
Explanatory notes
CONTROL LINE
COMMON LINE
TX LINE
RX LINE
DATA LINE
TO RF
RX-IN [RX-ANT IN]
TO RF
[RX-ANT OUT]
RX-OUT
TO RF
X-VERT [X-VERTER]
TO MAIN
[REF IN]
REF-IN
CHASSIS UNIT