Icom IC-M24 Service Manual

9 - 1
SECTION 9
.
BLOCK DIAGRAM
LPF
ANT
SW
ANTENNA
J1
PWR
AMP
DRIVE
PRE
BPF
RF
AMP
BP F
LO
SW
BUFF
BPF
APC
CTRL
BUFFBUFF
BUFF
BPF
IF
AMP
FIL
LOOP
VCCVCC
LPF
(SPLATTER)
X170
450KHz
BPF
LIMIT
AMP
LPF
AF
AM P
X1
21.25MHz
AMP
VCC
HV
BPFBPF
POWER SW
AF
MUT E
AF
MUTE
AF
MUTE
M3V
HV VCC
BUFF
PWR
AM P
AM P
AM P
HV
M3VS
R3VS
T3VS
WDEC V
RSSI V
LOIN V
NOISV
TEMPV
BATTV
BEEPI
AFVS
MICMS
DETMS
ETXDO
TXM S
TDET V
ERXDI PTTIN
EXTPTT
PTTM
ATTS
LOW
PWSW
PON
BTEMPV
DCV
ATX
LEDI-R
LEDI-G
CRESET
MICG
CMODE
21.7MHz
FI150:FL-368
Q151: D131:
D92:
T3V
D52:1SV307
Q90:
Q53: Q54:
D 50,D51:
Q50:Q24:Q23:
Q25:
Q 21,Q22:KTC3770U
IC1:MB15E03SLPFV1
PLL IC
PWR
DET
TX
MUTE SW
T3V
MOD
MUTE
R3V
DE -
ENPHA
AF
REG
PRE
ENPHA
IF DET IC
D/A IC
SP-
SP+
CLONE
MIC
GND
CLONE
REG
3V
REG
R3
REG
T3
CPU
3V
RESET
CPU3V
RESET
EEPROM
KEY
LED
SW
LED
T
HV
GND
ADJ CK POINT
VCO
Q150:
D91:
MAIN UNIT
CHASSIS
REF Q20:LDTC144EE
IC50:LMV321IDCK Q351:
IC170:
FI170:
450KHz
IC190:
DS246:
Q240:
IC360:
CPU
IC220:
IC341:Q221:
Q222:
M3V
R3V
T3V
IC362:
Q 230:RSQ035P03TR
IC200A:
IC200D:
IC200B:
IC365:
WDECV
VOLIN
VOLO
BEEP
SQLO SQLI
FCON
MODC
ERXDO
TXMS
RSSI V
NOISV
MODC
PLLO
2ND LO
DET
FCON
IC340:S-24C64CI-T8T1U3
LMUN5213DW1
DS240,DS241:
SML-512WW
DS242,DS243,DS244,DS245:
LNJ426W83RA
TAK-35920
X360
CR-911
UPD78F0338GC
SP
L2SA1576AS
Q224:KTC811U
Q225:KTA1664
NJU7704F03A
NJU7772F03
LMV358IPW
MIC
TPA0211DGN
Q231:KTC811U
D350:KDS122
JTBM450CX70
LTM450FW
NJM2591V
M62364FP
KTC3880S
FI151:FL-399A
3SK293
3SK294
D93:
RB706F LDTA144E E
D90:HVD144A
RD07MUS2BRD01MUS2KTC3770U
HVD144A
2SC42152SC4215
2SC4215
D 20:MA2S077G0
D 21:MA2S077G0
D22:HVB350BYPTL
CR-766
D130:
KDV214E
T1CON
LM324IPW
LM324IPW
LM324IPW
INMI C
EXTMIC
T1CON
PCON
TDETV
D/A contorl BUS
PLL DATA BUS
ERXDI
AFVS
CD4066PWR
IC260D:
DETMS
MOD
CD4066PWR
IC260A:
PTTM MICMS
CD4066PWR
IC260C:
ATIS
BEEP
KDV214E KDV214E
KDV214 E
LEDS
PWR
CTRL
PWR
CTRL
PWSW
PON
RSQ035P03TR
Q353:
Q354:LDTC144EE
MIC
Q250:LDTC144EE
CONT
Q350:LDTC144TE
SP1
MC250
Q 357:LDTA144EE
PCON
LOW
Q3:3SK1069
LOINV
RD07MUS2B
Q55:
PWR
SPLITTER
PWR
COMBINER
LM324IPW
IC200C:
F
Q362:LDTC144EE
LMV358IPW
IC365:
D356:L1SS400
D356:L1SS400
L2SA1576AS
ATX
S250
PTT
PTTIN
D358:LDAN222
PWR
CTRL
RSQ035P03TR
Q606:
PWR
CTRL
L1SS400
D609:
INPUT DC 6.0V
REG
5V
DET
DC
DCV
LM3Z3V0
D604:
D601,D610:LRB551
IC602:NJM2853DL1
CHARGE CTRL
IC601:NJW4100V
D603:LRB551
RESET
Q603:
LDTC144EE
CRESET
Q602:KTA1664
LEDI-G LEDI-R
LCD
BTEMPV
BATTERY VOLTAGE
CHARGE
Q364:2SJ347 F
D360:LRB551
Q 363:RSQ035P03TR
D359:LRB551
CLONE
SW
CMODE
PWR
CTRL
BEEPIN
BEEP
PTT
4.9152MHz
CLONE
WET
DET
LED
FLASH
Q608:2SJ347 F
DS248:SML-A12UT
Q609:LDTC144TE
D612:L1SS400E
SHUNT
LOW
Q365:LDTA144EE
PSW
Q366:LDTC144EE
HV
DS247:RT3-239HRH16T

Icom IC-M24 Specifications

General

Brand	Icom
Model	IC-M24
Category	Transceiver
Language	English