Icom IC-4008A - Block Diagram

SECTION 10 BLOCK DIAGRAM
10 - 1
CTCIN
D/A
REMIN
PTT2
MICSW
RMUT
AFON
RXV
TXV
POWER
LCD
DS2
VOLT
SENS
RESET
IC5
X2
CDBCA450CX24
(450 kHz)
FI3: CFWM450E
CERAMIC
BPF
(450 kHz)
FMDET S DET
IF
AMP
NOISE
DET
IC2
TA31136FN
2SC4215
Q13: 2SC4081
Q14: 2SA1586
D8 : 1SS355
D9 : 1SS355
FL-298
Q6: 2SC5108
D4,D5: 1SV284
X1
CR-632
(21.25 MHz)
2nd.Lo: 21.25 MHz
2nd MIX
IC1
TB31202FN
UNLOCK
DATA,CK,STB
Q1
FI2
ATT
Q7
2SC5108
R50
MOD LEVEL SET
VCO
BUFF
LO
SW
D1: MA77
D2: MA77
TX/RX
SW
2SC3356
PWR
AMP
DRIVE
AMP
MA2S728
PRE
DRIVE
D7: MA2S077
D101: MA2S077
D102: MA2S077
POWER SET
R206
IC3
X24C01AS
EEP
ROM
X1
CR-627
5.8368 MHz
POWER
MODE
UP
DOWN
PTT
S1
CPU
AF
VOL
MMUT
TXMOD
Q7
2SC4081
TONE
LPF
TONE
LPF
Q12
2SC4081
MODSW
Q1
DTA144EU
LPF IDC
+3V
IC2A
NJM2100M
Q6
2SK1829
MIC
MUTE
IC2B
NJM2100M
Q23
2SJ144
R58
AF VOL
VOL
MUTE
MIC1
KUC3523
PTT
SENSE
MIC
SW
MIC
Q14
DTA114EU
DS1
LN1371G
S-80928ANMP
LED
DRV
R+3
CURRENT
AMP
R+3 T+3
+3V
CURRENT
AMP
Q25: UMZ2N
D4: 1SS355
+3V TO LOGIC
+3
REG
IC6
S-81230SG
Q18
2SA1586
Q27 : 2SC4081
Q28 : 2SB798
Q101: UMZ1N
D5: 1SS355
D101: 1SS355
T+3
CURRENT
AMP
D2 1SS355
PROTECTOR
Q29: DTC114EU
Q2: UN9215
Q3: UN5119
AF
MUTE
BATT
BATTERY
J3 SP JACK
COMON LINE
TX LINE
RX LINE
DATA BUS LINE
J1 MIC JACK
SP1
AF
AMP
IC9
NJM2070M
Q5 : 2SA1362
Q10: 2SC4081
Q11: 2SC4213
Q2
2SC4226
Q3: 2SC5194
RF
AMP
ANT
SW
HPF LPF
ANT
CHASSIS UNT
Q15: 2SC4081
Q16: 2SC4081
VCO
REG
PLL
IC
AF FIL
1st.IF: 21.7 MHz
1st.LO: 411.375-413.075MHz
TX/RX: 433.075-434.775MHz
TX: 433.075-434.775MHz
1st MIX
FI1: NSVA468
SHIFT
Q12
2SC5108
Q202: MRF9745
D103 Q201
Q8
2SC4228
SQL SENS PSC
LOOP
FIL
IF
AMP
XTAL
BPF
BPF
CHASSIS UNIT
RF UNIT
MAIN UNIT
IC1
µPD753036GK
[CSA/-1]
Q27 : 2SC4081
Q28 : 2SB798
D5: MA2S111
D101: MA2S111
D303: MA2S111
[ITA/-1]