Icom IC-A14 Service Manual

8 - 1
SECTION 8 BLOCK DIAGRAM
ANT
LPF
PLL
IC
MIC
MUT E
MATRIX
LCD
EEPROM
ANT
SW
PWR
AMP
DRIVE
PRE
LPF
BUFFBUFF
FIL
LOOP
FIL
RIPPLE
BPF
RF
AMP
BPF
BPF
XTALIF
AMP
IF
AMP
BPF
CERAMIC
FM
DET
AGC
AM P
AGC
AM P
ATT
MATRIX
VOL
PWR
AMP
BUFF
LPFLPF
BUFF
VCO
SW
BUFF
EXT MIC
BATTERY PACK
7.4V
RESET
MIC
AM P
AMP
HPFLPF
PRE
AMP
LPF
APC
AMP
JTBM450CX24
X4
CR-783
X5
DRIVE
AM P
EXT SP
NOISE
AM P
X3 CR-867
MMUT E
EMBI
T4 T3 T1
DETMUTE
WXC
ANLC
ALCC
AFC
R5C
TXC
SHIFT
T2
AO3
RSSI
AGCOFF WXC
SPCON
COMMON
CONTROL
RX
TX
POWER
DET
LO-SW
RSSI OUT
LCD
BACK-
LIGHT
INITIAL
KEY
+5V
CURRENT
AM P
TEMPERATURE
D ETECT
MIC
CONTROL
IC26
CPU
uPD780338
+5V
EXT PTT
DETECT
AF AMP
REG
EXT-MIC
REG
ALC
CONTROL
AM/FM
SW
ANL
SW
INT SP
ANL
NOISE
DET
(MIC VR)
DAC
(4.9152MHz)
Tx;118.000 - 136.975 MHz
Rx;108.000 - 136.975 MHz
161.650 - 163.275 MHz
LO FREQ.
R
x; 77.950 - 106.925 MHz
131.600 - 133.225 MHz
46.350MHz
0.450MHz
154.350 - 183.325 MHz
118.000 - 136.975 MHz
IC17 _6
M62363FP
IC17 _5
M62363FP
IC17 _7
M 62363FP
Q2
RD12MVS1
Q3
RD01MUS1
2SC3775
Q4
IC27
LMV321
D2,D3,D74
MA2S728
D6 :1SV307
Q28
2SC5006
Q60
2SC5006
Q29
2SC5006
RX VCO
TX VCO
Q58;2SC5006
D38,D48;MA2S304
Q59;2SC5006
Q57;XP1113
Q33;2SC4116
D1,D8
HVU131TRF
TXV
D75
MA2S077
Q80
2SC4738
D13,D50
HVC375B
Q10
2SC4738
Q11;3SK293
D14,D15
HVC350Q12
3SK324
Q13
2SC5006
( 15.300MHz)
IC29
MB15E03SL
REG
Q7;2SB1132
Q 8;XP1501
R5S
IC1;NJM2552V
Q21
UNR9210
D82
MA2S728
IC2
TC4W53FU
REG
TXV
R5S
Q 20;UNR9115
Q25;2SA1576
D 23;MA133
Q 26;UNR9213
Q 50;UNR9111
D 36;MA2S111
Q51;
UNR9213
ECM
MC1;EM6027P
D67;MA8051
Q 79;UNR9213
Q86IC15
Q52
XP4315
Q82;2SB1132
Q36;XP1501
IC31
TDA8547TS
I/O
CLONE
BATT-V
DETECT
D31;1SS400
IC18aIC18bIC18c
LMV324
IC18d
Q 91;UNR9112
Q 92;UNR9213
Q70;2SB1132
Q71;XP1501
IC22;S-812C36AMC
IC24;BD5230GD70 - D73
MA2S111
D 68;MA2S111
D 69;MA2S111
DRIVE
LED
DS1
S11313
D S2,DS3;
SML-A12MT
Q75;2SA1576
Q76;2SC4116
IC25;S-24CS64A0I
RX-VCO
TX-VCO
VCC
CLONE IN
CLONE OUT
CPU3.6V
REG
IC17 _1~
DAC
(tuning
voltage)
4
M62363FP
SCK,SDATA
DA2STB
DA2STB SCK,SDATA DA2STB SCK,SDATA
DA2STB SCK,SDATA
SW
AGC
HVTXV
VCC
+5V
+5V
+5V
PCK,PDATA,PSTB
R5S
R5S
R5S
KS0 ~ KS3
KR0 ~ KR4
FI2
FI3
HD63;MA2S077
LMV324 LMV324 LMV324
FL-417
CFWM450D
D 52;MA2S111
DETECT
JACK
AN6123MS
ALC
AM P
2SC4116
VOX
+5V
NOISE
MODMO D
POWER CONTROL
ATT
ATT
AM DET
FM DET
RF AGC
RSSI
IC20
LMV321
SW
DC UNIT
POWER
D17:MA2S077
Q85
UNR9213
+3.6V
D45,D46:HVC376B
3
(45.900MHz)
Q84
2SC4617
208.000 - 209.625 MHz
HV
IC21
LMV321
D53
MA2S728
Q 83;UNR9213
+3.6V
SW
VIN
Q89;XP4315
PCON
VCC
VCC
VCC
INI
KS0 ~ KS3
D 86;MA2S111
D 87;MA2S111
+3.6V
IC33;TC7W04FU
D75,D76,D77
Q 90;UNR9213
IC28:LMV321
(MIC VR)
DAC
(VOLUME)
DAC
PA UNIT
MAIN UNIT
LPF
ANT UNIT

Icom IC-A14 Specifications

General

Brand	Icom
Model	IC-A14
Category	Transceiver
Language	English