Block Diagrams - Icom IC-7800 Service Manual

SECTION 9

BLOCK DIAGRAMS

Q503 FI501
UMH11N CFWS455D
MAIN UNIT (TX PART)
MODS CERAMIC
FILSEL
BPF
20k
IC501/IC502
FI502 Q504
Q501
NJM5534
IC503 CFWS455IT D505
3SK294 2SK882
TA4107 HSB88WS
TX IF IN (TX36K) CERAMIC
IF IF
LPF ATT
(DSP-TX UNIT) AMP BPF AMP
4k
Q806/Q807
2SC4081
TX MONITOR (MON)
AMP
(DSP-A UNIT)
DRIV ALC
SW
Q808
DTA114E
MONS Q809
DTC114E
3rd Lo IN
(PLL-A UNIT) 491kHz
2nd Lo IN 64.0MHz
ATT
(PLL-A UNIT)
TX SCOPE OUT
(MAIN UNIT)
Q507
2SC4673
1st Lo IN
LO
LPF
(PLL-A UNIT) AMP
RX-A (RF PART)
(PLL PART)
RX-A 1st Lo
(PLL-A UNIT)
90deg
Q1651 IC1651 BUFF
2SC4215 TC74LCX00
IC1651
TC74LCX00
RX-A 2nd Lo R2LO
LO
ATT BUFF
(PLL-A UNIT) AMP
IC1651
TC74LCX00
BUFF
AGC-A IN DAGCA
AGC
(DSP-A UNIT) AMP
IC1653
IC1653
NJM072
NJM072
RX-A AGC DET MAGCA AGC
AMP
(DSP-A UNIT)
Q1501
IC1652 BA15532 IC1503 IC1501
2SC4835
D1653 1SS355 NJM5534 9A41
IF
BUFF
AGC AMP
DET
Q1502
RX-A IF OUT 2SC4835
IF
90deg
IF
(DSP-A UNIT) AMP
BUFF
AMP
IC1506 IC1505 IC1505 IC1502
NJM5534 NJM074 NJM074 IC1504 9A41
NJM5534
SCOPE IF-A OUT
(SCOPE UNIT)
RX-B (RF PART)
(PLL PART)
RX-B 1st Lo IN
(PLL-B UNIT)
90deg BUFF
Q1651 IC1651
2SC4215 TC74LCX00
IC1651
TC74LCX00
RX-B 2nd Lo IN R2LO LO
ATT BUFF
AMP
(PLL-B UNIT)
IC1651
TC74LCX00
BUFF
AGC-B IN DAGCB
AGC
(DSP-B BOARD) AMP
IC1653
IC1653
NJM072
NJM072
RX-B AGC DET MAGCB AGC
AMP
(DSP-B BOARD)
Q1501
IC1652 BA15532 IC1503 IC1501
2SC4835
D1653 1SS355 NJM5534 9A41
IF
BUFF
AMP
AGC
DET
Q1502
2SC4835
RX-B IF OUT IF
90deg
AMP IF
(DSP-B UNIT)
BUFF
AMP
IC1506 IC1505 IC1505 IC1502
NJM5534 NJM074 NJM074 IC1504 9A41
NJM5534
SCOPE IF-B OUT
(SCOPE UNIT)
IC820
µPC4094
RF
LPF ATT
AMP
137KHz
BPF
Q508
FI503 Q506 1.6-2M
D506 2SC5501
FL-348
2SK882
HSB88WS
BPF
IF RF
BPF LPF ATT ATT
AMP AMP
2-3M
BPF
3-4M
BPF
4-6M
BPF
6-8M
BPF TRV-SW
8-11M
MDAT/MCK/MSTB1/MSTB2
BPF
11-15M
SERI/
BUFF BPF
PARA
IC250/IC260 IC251/IC261 TXB0-B10 15-21M
CD74HC4094M TD62783A
ATT BPF
22-30M
BPF
50-54M
Q1105 Q1104 Q1101
2SC5501 2SC3950 2SC3950
LO LO LO
AMP AMP AMP
HF15V
IC1051
CTRL
Q1102 DTC114E SD5400
HPF LPF
Q1103 2SB1123
Q1213 DTC114E
VH15V Q1214 2SB1123
CTRL
Marker
LO (100kHz)
HPF LPF
AMP
IC1702
Q1301
CD74HC4094
2SC4673
HF3V
CTRL
DATA VH3V
1IFW
1IFN
FI1401
Q1402/Q1403 FL-364
2SC4402
XTAL
IC1403
µPG2009 BPF
IF
15kHz LPF LPF
AMP
Q1211/Q1212
FIL_SEL FI1402 FIL_SEL 50/HF_SEL
MMBFU310
FL-358
IC1402 IC1081
µPG2009 µPG2009
XTAL
IF
LPF
AMP BPF
Q1352
6kHz
Q1401
2SC5551
2SC5501
BUFF
Q1105 Q1104 Q1101
2SC5501 2SC3950 2SC3950
LO LO LO
AMP AMP AMP
HF15V
CTRL
IC1051
Q1102 DTC114E
HPF LPF
SD5400
Q1103 2SB1123
Q1213 DTC114E
VH15V Q1214 2SB1123
CTRL
LO
HPF LPF
AMP
IC1702
Q1301
CD74HC4094
2SC4673
HF3V
CTRL
DATA VH3V
1IFW
1IFN
FI1401
Q1402/Q1403 FL-364
2SC4402
XTAL
IC1403
µPG2009 BPF
IF
15kHz LPF LPF
AMP
Q1211/Q1212
FIL_SEL FI1402 FIL_SEL 50/HF_SEL
MMBFU310
FL-358 IC1402
IC1081
µPG2009
µPG2009
IF XTAL
LPF
AMP BPF
Q1352
6kHz
Q1401 2SC5551
2SC5501
BUFF
9 - 1
IC2 TA78L08 PA200W BOARD
Q1 2SB1119
Q2 DTC114E
PAT8
DC_BUFF
Q401
Q101 Q402
Q801 Q201 Q301
PD01MUS1 PD55003 SD2931
2SC5551 3dB SD2918
YGR RF PRE DRIVE PWR
ATT ATT
AMP AMP DRIVE AMP AMP
ID_DET
+15V
THML TEMP
+48V
DET
IDH
IDL
ATT
PA UNIT
LOGIC UNIT
THML
IC330
M62352AGP IC821 FAN
Q804 UMH11N
Q805 DTC114E NJM2904
FANI
D/A CPU FAN-IDET
TRVSM
IC604
HD64F2377VFQ33V
FANV
FUN
FANG
CTRL
MF1
Q821 2SB1201
IC821 NJM2904 Q822 2SC4081
TRV OUT
DIGISEL UNIT (A)
IC1 RL2
Q201
CAT24WC256K1.8 D_SEL
2SC5551
RF
E2ROM BPF
AMP
FROM CPU
D_S_CTRL
DDAT/DCK/DSTBA
TO/FROM CPU
Q1007/Q1008
2SC5551
P.AMP1
P.AMP_ON P.AMP_SEL P.AMP_SEL P.AMP_ON
Q1006
2SC5551
P.AMP2 ATT
RL1006 RL1005 RL1004 RL1003 RL1002
HPR1
DATA
RL_CTRL DW_AMP
HPR2
Q1001
IC1701 CD74HC4094
2SC5551
IC1703 TD62783
HPOFFL HFDW
VPR1
VPOFFL
Q1209/Q1210
2SC5551
RL1206 RL1203 P.AMP_SEL P.AMP_SEL DW_AMP_SEL
Q903
2SC5551
P.AMP1
P.AMP2
RL903 RL902 RL901
P.AMP_ON P.AMP_ON
DIGISEL UNIT (B)
IC501 RL502
Q701
CAT24WC256K1.8
2SC5551 D_SEL
RF
E2ROM BPF
AMP
FROM CPU
D_S_CTRL
DDAT/DCK/DSTBA
TO/FROM CPU
Q1007/Q1008
2SC5551
P.AMP1
P.AMP_ON P.AMP_SEL P.AMP_SEL P.AMP_ON
Q1006
2SC5551
P.AMP2
ATT
RL1006 RL1005 RL1004 RL1003 RL1002
HPR1
DATA
RL_CTRL DW_AMP
HPR2
Q1001
IC1701 CD74HC4094 2SC5551
IC1703 TD62783
HPOFFL HFDW
VPR1
VPOFFL
Q1209/Q1210
2SC5551
P.AMP_SEL DW_AMP_SEL
RL1206 RL1203 P.AMP_SEL
Q953
2SC5551
P.AMP1
P.AMP2
P.AMP_ON P.AMP_ON RL953 RL952 RL951
FILTER UNIT TUNER UNIT
1.8M
D101/D102 D151/D152 D201/D202
LPF HSM88AS HSM88AS HSM88AS
RL251
RL252
CTIN
P-DET R-DET
SWR-DET
3.5M
LPF
AN3
4/5M TRC THRU1
LPF
IC1
FOR/REF(MAIN) M38022
AN0/AN1
7M TUNER_
IKEY/ISTA/TDRS
CPU
LPF TO/FROM CPU
FROM CPU 3R5M/4R6M
CSTB
10M BAND MOTOR
5M/4R6MOL
CTRL CTRL
LPF
IC51 CD74HC4094TD62783 Q3-Q10
IC52 BU4066 DTC114E
14M
Q51/Q52/Q53 DTC114E
LPF
FSTB
RL_CTRL
18/21M
LPF
IC55 CD74HC4094
IC57 TD62783
24/28M
CTRL
LPF
RL_CTRL BOARD
50M IC56 CD74HC4094
IC58 TD62783 THRU1 IC401
LPF
Q55 DTC114E THRU2 TD62783
LPF1-9
RL21
(B0A)
LPF
-1.6MHz
(B1A)
BPF
1.6-2MHz
IC4/IC5 (B2A)
BU2099
BPF
2-3MHz
(B3A)
BPF
3-4MHz
(B4A)
BPF
BPDAT/BPCKA/BPSTA
4-6MHz
IC101/IC102
(B5A)
BU2099
BPF
TO BPF RL
6-8MHz
B0A-B10WA
RL_CTRL
(B6A)
RL1001
BPF
8-11MHz
(B7A)
BPF
HF50A
11-15MHz
AT6A
(B8A)
BPF
15-22MHz
12dB
(B9A)
BPF ATT
22-30MHz
RL351
(B10A)
DW_AMP_SEL
Q901
BPF
2SC5551
50-54MHz
DW_AMP
(B10WA)
RL900
BPF
30-50MHz/
54-60MHz
VPR2A
VHDWA
BPF UNIT
(B0B)
LPF
-1.6MHz
(B1B)
BPF
1.6-2MHz
RL521
(B2B)
BPF
2-3MHz RL851 12dB
(B3B)
ATT
BPF
3-4MHz
(B4B)
IC504/IC505
BPF
BU2099
4-6MHz
(B5B)
BPF
6-8MHz
(B6B)
BPF
AT12B
8-11MHz
(B7B)
HF50B
BPF
11-15MHz
TO BPF RL
(B8B)
B0B-B10WB
BPF
15-22MHz
RL1001
(B9B)
BPF
22-30MHz
(B10B)
BPF
50-54MHz
(B10WB)
BPF
30-50MHz/
54-60MHz
Q961 DW_AMP_SEL
2SC5551
DW_AMP
RL950
VPR2B
VHDWB
ANT-SW UNIT
D301/D302
HSM88AS
RL253
1
CRNT ANT1
DET
ANT1A
ANT1B
THRU2
ANT1G
IC301
NJM2903
AMP
1
ANT2
ANT2A
NETWORK
BOARD
ANT2B
ANT2G
C-NET C-NET
1
ANT3
Q300 2SB1123
Q301 DTC114E
ANT3A
FAN
L-NET
CTRL
ANT3B
ANT3G
RL_CTRL RL_CTRL
1
ANT4
IC402
TD62783 ANT4A
C-NET DATA / BAND DATA
ANT4B
Q11-Q14
RN2427
MF3 ANT4R
BUFF
ANT4G
RL_CTRL
IC11
BU2099
TRV TX
RL402
TRVANT
MR8V
1
RL_CTRL
Q381/Q387 RL381
TRVS
DTC144E
RL401
DWSPA
Q401 2SC4116
D402 MA742
RSELA
RMUTA
REVERSE
RL_CTRL
AT3A TRV PO_DET
Q402 2SC4081
Q403 DTA114E
Q404 DTC144E
6dB
3dB
ATT ATT SPLITTER
RL355 RL371
RSELB
RL954
6dB 3dB RL855
RL871
ATT ATT
RMUTB
REVERSE Q873 2SC4116
RL_CTRL
TRV
PO_DET D872 MA742
Q872 2SC4081
Q871 DTA114E
Q874 DTC144E
AT6B AT3B
REG UNIT
IC401/IC402
BU2099
DWSPB
RL_CTRL
+48V
+15V
-15V
BPDAT/BPCKA/BPSTB
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
LINE
DATA BUS