Icom IC-M32 Service Manual page 26

SECTION 10 BLOCK DIAGRAM
CHASSIS
VCC
HV
BTYPE
GND
SP
POWER
POWER SW
SPO
AF OUT
EXT
CLONE
JACK
MIC
GND
Q350: DTC144TU
D350: DA221
BUFF
J250
MIC
PTT SW
PTT
CONT
PTT
Q250:
UN911H
MAIN UNIT
REF OSC
21.250 MHz
PLL IC
X1
LOOP
CR-766
IC1: µPD3140GS FIL
MODC
PLLO
2ND LO
DET
450kHz
X170
CDBC450CX24
FCON
MODC
Q230: 2SB1132
Q231: XP6501
VCC
AFVS AF
REG
Q280: 2SC4213
IC280:
TA7368F
AF
AF
DE-ENPHA
MUTE
AMP
AFMS
IC200D:
NJM2902V
LPF
IC200A:
NJM2902V
LIMIT
AMP
IC200B:
NJM2902V
PRE
AMP
ENPHA
IC260: TC4W66F
MOD
ANALOG SW IC
DET
10 -1
D50, D51:
Q21, Q22: 2SC4226 Q23: Q24:
MA77
D22, D23: HVU350B 2SC4215 2SC4215
BUFF BUFF
Q20: DTC144EUA
MOD
D20: MA2S077 R5V
MUTE
D21: MA77
Q25: 2SC4215
VCO
BUFF
450 kHz FI170:
CFWM450E
BPF
FI150: FL-368
Q151:
FI151: FL-363
2SC2714
IF DET IC
IF
BPF
AMP
IC170: TA31136FN
D/A IC
IC190: M62363FP
VCC
Q223: DTC144EU
Q224: XP6501
Q225: 2SB1132
5V
REG
5VS
5V
IC200C:
NJM2902V
LPF
Q221:
2SA1588
R5V
REG
R5VS
R5
Q220:
2SA1588
V5V
REG
V5VS
V5
Q222:
2SA1588
T5V
REG
T5 T5VS
Q50: Q53: Q54:
2SC4226 RD01MUS1 RD07MVS1
PRE
TX/RX PWR
BUFF
DRIVE
SW AMP
IC50: NJM2125F
APC
BPF PWR DET
CTRL
D92: MA77
Q90:
D130: MA77 D93: MA728
Q150: 2SC4226
3SK299
RF
BPF BPF
AMP
21.7 MHz
BPFS
RSSIV
NOISV
PCON
VCC
IC220:
NJM2870F05
CPU5V
CPU
5V
IC341:
BD5242FVE
CPU
RESET
RESET
IC360:
M37560M8A-700GP
WXTV
ATIS
BEEP
EEPROM
IC340:
PWSW
BR24L16FV
CLOUT/CLIN
PTT
ANTENNA
J1
D52, D90:
1SV307
ANT
LPF
SW
D80:
RB706F
T5V
PWR
DET
D91:
Q351:
RB706F
DAT144EUA
TX
T5V
MUTE SW
LPF
TXMS
TDETV
DS246:
(7.9872MHz) L3-0018TAY-1
X361
CSTCR7M98G53
LED
LED
SW
Q240: DS240, DS241: FY1101F
DTC144EUA DS242, DS243, DS244, DS245: SML-311YTT86
KEY
NOTE: Explanatory notes
COMMON LINE TX LINE
RX LINE
RX LINE
COMMON LINE
TX LINE