Icom IC-FR4000 Service Manual page 68

IC2: SC-1322[L]
SC-1323[H]
PWR
DET LPF ATT
AMP
TX
ANT
D2: HSU88 VCC1
D4: HSU88
Q9: DTC114EU
Q10: DTC114EU
Q11: 2SB1143
IC8: µPC2912T
Q12: 2SC2712
IC1: TA75S01F
+10V
+10V
APC
AMP
PCON CTRL REG
M9V
TMUTE2
25PA UNIT
RVSWR
VCC1
FWSWR
a b
IC1: SC-1027 [M] or SC1322 [L]
or SC1323 [H]
Q2: 2SC3102
PWR PRE
DET LPF ATT
DRIVE
AMP
TX
ANT
D2: HSU88
50PA UNIT
D4: HSU88
D5: MA8047M
VCC1
D6: MA8047M
Q7: 2SB1143
Q6: 2SC2712
IC2: TA75S01F
APC TMUTE2
AMP
PCON CTRL
IC3: TA7808F
M9V
VCC1
+8V +8V VCC1
PCON
SHIFT REG
RVSWR IC7: S-80820CNMC
IC6: TC4S66F
FWSWR D7: RD12M
VCC1
D10: MA77
a b
PS 0V VCC1
F3: D7: Q1: 2SJ533
ATC20 FCH30A03L Q4: 2SJ533
PS 15V MAIN
SW
M SW
IC7: TA75S393F
IC11: TA75S01F
Q5: 2SD1664
D8: MA8047M
Q7: DTC144EE IC6: TA78L08F
BACKUP +8
CTRL REG
PS 0V
PSD
RL2:
ACB32101
F6:
ATC20
BATT+
D4:
D6: MA29W B
FCH30A03L
D3:
DSA3A1
BATT. CHARGE
REG UNIT
Explanatory notes
TX LINE
RX LINE
NOTE
:DATA BUS
REG PA
:CONTROL LINE FAN FAN
:COMMON LINE
:TX LINE CHASSIS UNIT
:RX LINE
Q4: 2SK3475
YGR
LPF LPF ATT
AMP
Q7: DTC114EU
Q8: 2SA1362
+9V +9V M9V
SW
VCC1 TMUTE2
IC7: TA78L05F
M9V
D15: MA29W B
+5V +5V M9V
TMUTE2
REG
PCON
PATEMP
TEMP RVSWR
PATEMP
AMP
SENS
FWSWR
IC3: NJM2107F
[FR4100 ONLY]
Q1: 2SK3475
YGR
LPF LPF ATT
AMP
Q5: 2SA1362
+9V +9V M9V
SW
TMUTE2
IC5: TA78L05F
VARISTOR
M9V
+5V +5V M9V
TMUTE2
UNIT REG
D1: MA29W B PCON
PATEMP
RVSWR
PATEMP
AMP
FWSWR
IC4: NJM2107F
[FR4000 ONLY]
RX
ANT
D3: 1SV284
D4: 1SV284
BPF
D6: 1SV284 [USA3], [GEN3], [GEN7] Only
VCC1
D7: 1SV284 [USA3], [GEN3], [GEN7] Only
IC5: TA75S01F
CP17
BUFF
VCC2
IC1: Q8: 2SJ553 (S)
NJM7809FA
Q9: DTC144EE
ATT
+9 M9V M9V
REG SW
M9C
IC2: NJM7809DL1A
IC7: TA78L06F
+9 L9V M9V +6
REG REG
IC3: TA78M05F
IC3: TA78L05F
+5 A5V
REG +5
REG
IC4:
TA78DL12AF
Q15: 2SB1182 F5
Q16: 2SC4081
+12 F12V
REG
R9V
SW
A5V
R9C
IC9: NJM2107F
REGTEMP
AMP
A5V
RX UNIT
Q2: 2SC4226
D1: 1SV308 Q2: 2SC4703 Q1: 2SC3356
TX OUT
AMP AMP BUFF
DIV
TMUTE1 M9V
Q3: 2SC4226
IC2: MB15A02PFV1
AMP
PLL IC
M9V
TX UNIT
X1: CR-732 [Other]
or CR-758 [USA1], [USA3], [FR4100]
Q1: 2SC5337 D6: 1SV284 FI1: FL-349A
Q3: 2SK1771
D7: 1SV284 IC1: GN2011 70.0 MHz
1st IF
70.0 MHz
RF IF
XTAL
BPF
AMP AMP
BPF
R9V
IC6: TA78L05F
M9V
+5
R5V R9V
REG
X2:
CR-729
2nd LO
TUNE
69.545 MHz
R9V
+6V
Q9: 2SC4703 Q8: 2SC4226
+5V
ATT LPF AMP AMP
M9V
R9V
LOGIC UNIT
D4: MA2S111
TVCO UNIT
Q6: 2SC3661
V9V RIPLE M9V
D1: 1SV284
FILTER
D2: 1SV284
D3: 1SV284 IC5: M62364FP
D4: 1SV284
Q1: 2SC3356 D5: 1SV284
MODC MODC T5V
ADJ.
MOD
MOD
IC6: NJM2107F
VCOMOD
MIX
ADJ.
Q10: 2SK880
REFMOD
TLV
BUFF
ADJ.
LOOP
FILTER
T6V
T5V, T6V
SCK/SDTO/TPLSTB
Q7: 2SA1576
Q9: 2SC2712
UNLOCK TUNLK
CTRL
PCON
IC3: NJM2701F
X1: 12.8 MHz
REFMOD
REF
MOD TVCON
T5V
IC2: TA31116FN (D)
2nd MIXER, 2nd IF AMP, FM DET, Noise AMP, SQL CTRL, RSSI
FI6:
2nd IF
455 kHz CFWS455KEFA X1:
455 kHz CDBC455KCAY24
CERAMIC
BPF
D16: D15:
1SS268 1SS268
W/N
W/N
FI5: Q19:
SW SW
CFWS455G DTA143ZU IC8C: NJM2902V
455 kHz
W/N
BUFF
CERAMIC
SW
BPF
W/NS
IC8D: NJM2902V
RVCO UNIT
BUFF
D1: 1SV284
D2: 1SV284
D3: 1SV284
D4: 1SV284
Q1: 2SK508
Q2: 2SC4226
RXOUT
DIV LPF BUFF
V9V
Q18: 2SK880
Q14: 2SC4226
IC4: MB15A02PFV1 RLV
BUFF
AMP
PLL LOOP
IC FILTER
+5V
+5V, +6V
X3: CR-732 [Other]
SCK/SDTO/RPLSTB
or CR-758 [USA1], [USA3],
Q6: 2SC2712
[FR4100], 12.8 MHz
Q7: 2SC2712
RVCON UNLOCK RUNLK
CTRL
+5V
10 - 2
IC1: TA78L05F
M9V
T5V +5
REG
IC4: TA78L06F
T6V +6
REG
TXAF TXAF
ADJ.
M9V
SCK
TONE TONE SDTO
ADJ.
DA1STB
TPLSTB
TUNLK
ETONE ETONE
TLV
ADJ.
TMUTE1
TXAF
REF f T5V TONE
ADJ.
ETONE
TMUTE2
PATEMP
PCON
ADJ. RVSWR
FWSWR
SCK/SDTO/DA1STB
+5V
IC8A: NJM2902V
SQL
HPF
+5V
DISC
+5V
RSSI
+5V
NDET
M9V
SCK
SDTO
RPLSTB
R9C
RUNLK
W/NS
RSSI
RLV
RVCON
TUNE
DISC
SQL
NDET