Block Diagram; Main Unit (Left Side) - Icom iC-m34 Service Manual

SECTION 10

BLOCK DIAGRAM

CHASSIS
HV
HV S5V
BTYPE
BTYPE
GND
MAIN UNIT
SP
Q353:
HV RSQ035P03TR VCC
IC200C:
PWR LM2902PWR
CTRL
W XDECV
LPF
PON
BEEPO
PWR
PWSW
CTRL
Q356:KRA304E
Q355:KRC404E
Q354:KRC404E
EXT JACK
SPO IC280:
TA7368F
AF OUT AF
AMP
J250
CLONE
MIC
GND
AFVS AF
REG
Q230:KTA1664
Q231:XP6501
Q350:KRC414E
D350:KDS122
CLOUT
BUFF
CLIN
MICROPHONE
[PTT]
IC1:MB15E03SLPFV1 Q 21,Q22:KTC3770U
D22,D23:HVC350B
PLL IC
LOOP
3V
REG FIL
IC2:
S-812C36AMC
CR-766
REF
X1 Q20:KRC404E
21.25MHz D 20:MA2S077
D 21:MA2S077
MOD
MODC
PLLO
2ND LO
IC170:
IC260D: TA31136FN
CD4066PW R
IF DET IC
AF DET
MUTE
DETM
450KHz
X170
JTBM450CX24
MODC
FCON
VOLIN
D/ A IC
Q280:
KTC2875
DE - AF
MUTE
ENPHA
AFMS
BEEPO
VCC
IC200D: IC-200A:
LM2902PWR LM2902PWR
LIMI T PRE
LPF
AM P ENPHA
Q251:
KRA302E
PTT EXTPTT
CONT
EXTMI C
IC260A: IC200B: IC260C:
CD4066PW R LM2902PWR CD4066PW R
I NMI C
AF AF
AMP
MUTE MUTE
PTT PTT PTTM MICM
CONT
Q250:
KRA302E
10 - 1
Q23: Q24: D 50,D51:
MA7 7
2SC4215 2SC4215
TX/RX
BUFF BUFF
SW
MOD R5V
MUTE
Q25:
2SC4215
VCO
BPF
BUFF
450KH z
FI170:
BPF
JTM450FW
Q151: FI150:FL-412
KTC3880S FI151:FL-412 Q150:
3SK293
IF
BPF
AMP
21.7MHz
RSSI V
NOISV
PLL DATA BUS
PCON
T1CON
D/A contorl BUS
IC190:
M62364FP
VCC
VCC
Q223:KRC404E
Q224:KTC811U
Q225:KTA1664
5V
REG
5V 5VS
Q221: IC341:
KTA2015 S-80942CNMC
R5V
REG RESET
R5 R5VS
Q226:
KTA2015
S5V
REG EEPROM
S5 S5VS
IC340:
S-24CS64A0I-T8T1-G
Q220:
KTA2015
V5V
REG
V5 V5VS
Q222:
KTA2015
T5V
REG
T5 T5VS
A TIS
Q50: Q53: Q54: D 52,D90:
KTC3770U RD01MUS1 RD07MVS1 1SV307
PRE PWR ANT
BUFF
DRIVE
AMP
IC50:
NJM2125F
APC PWR
D91:
CTRL
DET
RB706F
PCON
ATTS
D131: D130: Q90: D 93:
KDV214E KDV214E 3SK294 KDV214E
RF
BP F BPF BPF BPF
AMP
COMMON LINE
RX LINE
TX LINE
CONTROL LIN E
IC220:
NJM2870
CPU CPU5V
5V
CPU
RESET
IC360:
UPD780338GC
ANTENNA
J1
LPF
SW
D80:
T5V RB706F
TDETV
PWR
DET
Q351:
KRA304E
TX TXM S
T5V
MUTE SW
BEEP
D92: AFVS WDEC V
KDV214E
AFMS RSSI V
MICMS LOIN V
T1CON
DETMS NOISV
ETXDO WET
TXM S TEMPV
TDETV BATTV
ERXDI PTTIN
ATTS EXTPTT
LOW BTYPE
PWSW PTTM
PON
DS246:
7.9872MHz
S11000
X360
CR-834
LEDS LED
LED
SW
Q240: DS240,DS241:
KRC404E RY-SP110UTY24
DS242,DS243,DS244,DS245:
SML-311Y T
KEY