Vr Board; Sql Board; Logic-E Board; Main-E Unit - Icom IC-M401E Service Manual

SECTION 10

BLOCK DIAGRAM

EXT SP
FRONT UNIT
PTT
HM-132
IC9: LA4425A
SP1
INT SP
AF
AMP

VR BOARD

R1
HVS

SQL BOARD

5V
R1
SQLV

LOGIC-E BOARD

IC9B:
NJM2904M
ATIS
BUFF
D/A
KEY
BOARD
DS1: TTR5341
LCD
X1: CR-691
9.8304 MHz
Q1, Q3: 2SC4116 × 2
Q2: 2SB1132 IC2:
S-80942CNMC
DIM CPU
CTRL
IC1: HD6433847RH RESET
Q4: 2SK1069
LCD
CONTRAST
EEPROM
IC4:
IC7: HN58X2432TI
IC8:
TC74HC14AF
PC357N6T
DATAM
PHOTO
BUFF
COUPLER DATAS
Q8: 2SC4081
Q9: 2SA1576
CI-V
RIIFF
I/F
Q6: DTC114EU
Q7: DTA144EU
D1: 1SS355
ICF3
OPTION DS-100
VCC
DSC+
DSC–

MAIN-E UNIT

RMUTM
IC4A:
Q31: 2SC4116
TC4W66FU
AF
MUTE
BEEPM
LEVEL
CONV BPLVL
Q41: DTC144EU
IC11: NJM2125F
D41: DA204U
SQL
SQL
AMP
ATIS
IC4B: IC7B: IC7A:
TC4W66FU NJM4558M NJM4558M
AF
MIC
MUTE AMP
GATE
PTTM CTRL
Q34: DTC144EU
D31: 1SS355
HPF
BUFF
Q61: 2SC4116
10 - 1
FI3: CFWS450F
CERAMIC
BPF
IC2: TA31136FN
FM 2ND IF 2ND
BPF
DET AMP MIX
Q23: 2SC2714
NOISE NOISE 2ND LO
AMP DET BUFF
X1: CR-768
21.25 MHz
2nd LO
PLL
IC1: µPD3140GS
LOOP
VCO
FIL
IC8A:
Q4, Q5: 2SC4226 × 2
NJM4558M
D3, D4: HVC350B × 2
MIX
LPF
MOD
R328
FI1: FL-368
FI2: FL-363
Q22: 3SK131
IF
XTAL RF
BPF
AMP AMP
BPF
D26, D27, D28: Q21: 3SK131
21.7 MHz
1SV214 × 3
D7, D8:
Q10: Q12:
MA77 × 2
2SC4226 2SC3775
TX/RX PRE YGR
DRIVE
AMP
SW
Q3: 2SC4215 Q7: SC4215
BUFF BUFF
BUFF
Q6: 2SC4215
RL1: FTR-P3CP012W1
D43: 1SS355
HVS
FI4, FI5:
NFM60R20T152 × 2
VCC PWR
EMI
CTRL FIL
SEND
VCC
RCV
Explanatory notes
VOLTAGE LINE
TX LINE COMMON LINE
RX LINE
ANT
D14, D21:
XB15A308 × 2
ANT
BPF
LPF
SW
D25: 1SV214
IC3:
D12, 13:
RA35H1516M HSM88ASR × 2
TXDET
PWR RF OUT
AMP DET
R114
HV
Q13: 2SA1577 Q17:
DTC144EU
Q16: FMW1
H/L
APC PWR
CTRL
CTRL
TMUTE
TX MUTE
CTRL
Q15:
DTC144EU
D42: DSA3A1
REVERSE
13.8V
CONNECT
PROTECT
Q52: DTC144EU
Q51: 2SA1588
5V
T5
+5 T5
REG CTRL
IC10:TA7805S
Q53: 2SA1577
Q54: DTC144EU
R5
R5
CTRL
R8
R8
REG
Q55: 2SB1132
Q56: 2SC4116