Icom VHF Marine Transceiver IC-M88 - Manual (Page 33)

10 -1
SECTION 10 BLOCK DIAGRAM
PLL
IC
FIL
LOOP
BUFF BUFF
BUFF
BUFF
IF
AMP
RF
AMP
DRIVE
PRE PWR
AMP
APC
CTRL
TX/RX
SW
ANT
SW
BPF BPF BPF
LPF
ANTENNA
CR-747
D/A
LCD
DRIVER
D/A
BATT
LIMIT
AMP
AF
MUTE
LPF
PWR
AMP
PWR
CTRL
POWER SW
R801
AF
MUTE
AF
MUTE
AF
MUTE
AF
MUTE
BPF
VCO
SW
FM
MOD
BUFF BUFF
LPF
LPF
LPF
LPF
✕ 2
BPF
CERAMIC
F281
FUSE
1 2
BPF
CERAMIC
AF
MUTE
AMP
AMP
FIL
RIPPLE
LPF
BPF BPF
V5VS
S5VS
M5VS
BTYPE
TDETV
WDECV
CDECV
RSSIV
NOISV
LVINV
TEMPV
BATTV
PTTIN
EPTTI
W/NS
LDTFS
BEEP
ISPMS
AFVS
AFMS
STXMS
MICMS
T5VS
R5VS
PWR
DET
30.6 MHz
15.3 MHz
REF
V5V
REG
S5V
REG
M5V
REG
R5V
V5V
T5V
M5V
CPU
5V
RESET
9.8304 MHz
EEPROM
BACK
LIGHT
KEY CPU5V
CPU
VCO
RSSIV
PLL DATA BUS
Vcc
MIC
AMP
DE-
ENPHA
Vcc
VR UNIT
VOLO
VOLIN
GND
Vcc
EDETEDT
AFOUT
CLONE
GND
PTT
EXP JACK
PTT
CONT
Vcc
DET
COMMON LINE
RX LINE
TX LINE
SQCON 31.05 MHz
PRE-
ENPHA
TDETV
TXMS
T1CON
MUTE
SW
T3CON T4CON T2CON T1CON
DTCON
FRCON
SCRAMBLE
MOCON
D/A control BUS
MODIN
FIL
SW
CDTENC
CDECV
AFVS
SHIFT
SW CSIFT
CENC 1, 2, 3
ATIS
ISPMS
EXTMIC
EXTPTT
EXTVCC
J851
J41
EPTTI
CONTROL LINE
Vcc
INTSP
MIC
LVINV
BEEPO
SCRAMBLE CODE DATA BUS
FM IF IC
W/N
SW
LOGIC UNIT
LOGIC UNIT
MAIN UNIT
MAIN UNIT
CHASSIS
S5V
REG
T5V
Q431: 2SB1132
Q432: XP6501
IC421
TA7368F
Q441: 2SC4116
Q442: CPH3403
Q443: CPH3403
Q444:DTC144EU
D451: MA8062
IN/EXT
MIC SW
MIC SW
IN/EXT
AMP
MIC
Q461:
UN911H
Q462:
UN911H IC471A:
NJM2904V
NJM2904V
IC471B:
MICMS
IC481A:
TC4W66FU
STXMS
IC481B:
TC4W66FU
IC491A:
NJM2904V
IC491B:
NJM2904V
LDTFS
Q532:
Q531: XP1213
W/N
SW
ANALOG
SW
IC381:
FX214LG
IC282:
TC4W53FU
LPF
LPF
IC261A:
NJM2904V
NJM2904V
IC261B:
DETMS
SRXMS
IC281A:
TC4W66FU
TC4W66FU
IC281B:
Q411:
2SC4213
AFMS
BEEPO
WDETV
IC311:
NJM2125F
Q291:
XP4601
Q501:
DTC144EU
Q321: 2SA1588
Q323: 2SA1588
Q322: 2SA1588
IC382B:
NJM2904V
IC551:
NJM2870
REG
R5V
ATT
D154:
HVU350B
HVU350B
D155:
HVU350B
D181:
HVU350B
D182: Q165:
3SK294
3SK299
Q191:
FI211: FL-353
W/N
SW
W/NS
W/N
SW
Q232: 2SC5107
Q231: DTA144EU
W/NS
FI231:
CFWM450E
FI232:
CFWM450G
D231:
DAN222 D232:
DAN222
Q221:
2SC4116
Q47: XP6501
Q3: 2SK880 Q1: 2SK1829
X1: CR-664A
IC1:
MB15A02PFV
D39:
1SV245
Q41: 2SC4226
V5V
VCOS
D31-34:
HVC350B
Q51:
2SC4226
D35-38:
HVC350B
Q61: 2SC4215 Q62: 2SC4215
Q71: 2SC4215
Q81: XP1214
Q82: DTC144EU
Q211:
2SC4215
D91: MA77
D92: MA77 Q91:
2SC5110 Q101: Q111:
IC141:
TA75S01F
Q141:
DTA144EU
D132:
1SS375
D131: 1SV307
D151: 1SV307
D152: MA77
146 –174 MHz
IC382A:
NJM2904V
X601: D601:
MA77
IC581: S-80942CNMC
Q561: 2SA1588
Q551: 2SB1132
Q552: XP6501
Q553: DTC144EU IC591: HN58X2416TI
IC661:
µPD780316GC
DS651, DS652:
FY1101F
DS653, DS654:
SML-311YT
Q651: XP1213
RD01MUS1 RD07MVS1
X231:
CDBC450CX24
IC231:
TA31136FN
NOISV
2SC4116
CTIFS
CONNECTOR UNIT
BTYPE
IC331: EW-460
S5V BTYPE
DET
IC251:
M62363FP-650C
Common
Transmit
Receive
Power supply