Icom IC-7700 Service Manual page 89

IC501/IC502
FI501 Q504
Q501
NJM5534x2
IC503 CFWS455D D505
3SK294 2SK882
TA4107 HSB88WS
CERAMIC
TX IF IN (TX36kHz) IF IF
LPF BPF ATT
AM P AM P
Bw=20k
FI502
CFWS455IT
CERAMIC
BPF
ALC(MAIN UNIT)
3rd Lo IN
Bw=4K
(PLL UNIT)
491kHz
DRIV(MAIN UNIT)
MODS
FIL SEL
Q 502:DTC114
Q503:UMH11
2nd Lo IN 64.0MHz
ATT
(PLL UNIT)
TX SCOPE OUT
(SCOPE UNIT)
R8V
Q421/Q422:DTC114x2
Q507
D 421/D422/D423/D424:MA77x4
2SC467 3
LO
LPF
TRX 1Lo AM P
(PLL UNIT)
T15V
2SC5501 2SC3950 2SC3950
Q1105 Q1104 Q1101
HPF
LO LO LO
AM P AM P AMP
P.AMP_ON
I C1051
SD5400
LPF
CTRL
Q1102:DTC114E
Q1103:2SB1123
RL1006
Q1702:XP4311
HF3V
CTRL
Marker
(100kHz)
VP1OF
50/HF_SE L
I C1081:UPG2009
MMBFU310x2
Q1703:XP4311 Q1211/Q1212 P.AMP_ON
VH3V
CTRL LPF
RL1202
Q1213:DTC114E
Q1214:2SB1123
CTRL
LO
HPF LPF
AM P
Q1301
2SC467 3
Q1402/Q1403
RX IF OUT
Q1502 9A41
NJM074 NJM074 2SC4402x2
2SC483 5
IC1505(1/4) IC1505(2/4) I C1502
IF IF
BUFF
IF AMP AM P
90deg
AM P
I C1504
NJM5534
I C1506
NJM5534 I C1652:BA15532
I C1503
Q1501
D1653:1SS355 I C1501
NJM5534
2SC483 5 9A41
AGC IF
BUFF
DET AMP
IC1653(1/2)
NJM072
RX AGC DET MAGCA AGC
(MAIN UNIT) AMP
IC1653(1/2)
NJM072
AGC IN DAGCA AGC
AMP
(MAIN UNIT) IC1651(1/4)
TC74LCX00
BUFF
Q1651 IC1651(1/4)
2SC421 5 TC74LCX00
RX 2nd Lo R2LO LO
ATT BUFF
(PLL UNIT) AM P
IC1651(1/4)
TC74LCX00
90deg BUFF
SCOPE IF OU T
(SCOPE UNIT)
FI503
Q506
D506
FL-348
2SK882
HSB88W S
IF RF
ATT BPF LPF ATT LPF ATT
AM P AMP
T15V
ATT
ATT
Q1007/Q1008
2SC5551x2
P.AMP1
P.AMP_SEL P.AMP_SEL P.AMP_ON RL2
D_SEL
2SC555 1 2SC555 1
Q1006 Q201
RF
P.AMP2
BPF
AM P
RL1005 RL1004 RL1003
DSAPA
HPR1
RL_CTRL
HPR2
I C1701:CD74HC4094
IC1703:TD62783 FROM CPU
D_S_CTRL
HPOFF DDAT/DCK/DSTB
VPR1
IC4/IC5
CAT24WC256
BU2099x2
VPR2
P.AMP_ON P.AMP_ON P.AMP_ON
P.AMP1 P.AMP 2 DIGISEL UNIT
RL1201 RL903 Q902 RL902 TO/FROM CPU
Q1209/Q1210 2SC5551
2SC5551x2
P.AMP_ON
I C1702
CD74HC4094
HF3V
VH3V
CTRL
MDAT/MCK/RSTBR IF W
IFN
I FNN
FI1401
XTAL
IF BPF
LPF LPF
AM P
15kHz
Q1401
FL-364
2SC5501
FIL-SEL
FIL-SEL MCF-W BOARD
I C1402
I C1403
NJG1519
NJG1519
FI1401
XTAL
BPF
6kHz
FL-358
MCF-M BOARD
FI1401
XTAL
BPF
3kHz
FL-396
MCF-N BOARD
Q1352
2SC5551
BUFF
9 - 3
TXB1
Q50 8 Q801
BPF
2SC550 1 2SC5551
1.6 - 2M YGR
ATT ATT
TXB2 AMP
BPF
T15V
2- 3M
TXB3
BPF
3- 4M TRV OUT
ATT
TXB4
BPF
4- 6M
TXB5 Q804:UMH11N
TRV-SW
Q805:DTC114E
BPF
6- 8M
TXB6 T8V
BPF
M DAT/MCK/RSTBT
8- 11M
TXB7
BPF
TXB1- B10 SERI/
BUFF
11- 15M PARA
TXB8
IC1901/IC1902 IC1903/IC1904
BPF
TD62783AX2 CD74HC4094MX2
15- 22M
Q802:2SB1119
TXB9
Q 803:DTC114E
BPF
T15V 15V
T15REG
22- 30M
TXB10
T8V
BPF
50- 54M
RL21 RL1 RL2
B0
LPF
- 1.6MHz
RSEL
RL21 RL22
B1
BPF
1.6-2MHz
RL51 RL52
B2
BPF
RANS
2-3MHz
IC1 Q402:2SC4081
RL81 RL82
Q403/Q404:DTA114Ex2
B3
T8V
BPF
3-4MHz
EEPROM
RMUT
RL111 RL112
B4
BPF
4-6MHz
RL141 RL142
B5 MDAT/MCK/BPST
BPF
6-8MHz
RL171 RL172
B6 IC101/IC102
BPF
8-11MHz BU2099x2 R8V
B0- B9
RL_CTRL
RL201 RL202 B10 TRVS
B10W
B7
BPF
11-15MHz
RL231 RL232
B8
BPF
15-22MHz HF50
RL261 RL262
12dB 6dB
B9
BPF
22-30MHz
AT T ATT
BUFF
RL351 RL352 RL353
50-54MHz Q 260 DTA114
B10
BPF
2SC4081
B10W
BPF MUTEI_to_LOGIC
Q 320
D TA114
30-50MHz/
EPAD_from_LOGIC
54-60MHz
BUFF
TX LINE
MET_from_LOGI C
RX LINE
COMMON LINE
+15V
LINE
RF UNIT
PA input
RXINPUT
(FROM_CTRL)
RX_ONLY_INPUT
(FROM ANTSW)
RX_OUT
RL431
RL402
1
Q401:2SC4116
D402:MA742
REVERSE
RL_CTRL
PO_DET
1
RL401 RL410
RX_IN
Q381/Q38 7
DTC114Ex2
RL_CTRL
TRV TX
TRVANT
1
RL381
DiSW_CTRL
Q2001 DTC114Ex4
Q383/Q384/Q385/Q386
SW
EXT KEYPAD
METER OUT
DC OU T