Icom IC-F70DT, Service Manual

Page: 36 / 42

VOLTAGE LINE
Explanatory notes
TX LINE
RX LINE
COMMON LINE
DATA LINE
FRONT UNIT
LCD
LED
EXPANDER EXPANDER
IC2
M62320FP
DS108-DS113
IC1
M62320FP
RX
SW
Q202
2SB1132
DS101,DS102,
DS106,DS107
LN1371G
×
4
VCC
SP1
MC1
IC204
TC4S66F
IC203
NJM12902V IC203
NJM12902V
EM-140
PTT
P1
MIC
XTXD
XRXD
RESET
DET
VCC
SP
9pin
ENCORDER
VOL
SQL
CB10-13
AF
AMP
AF
MUTE
MIC
AMP
MIC
AMP
MIC
MUTE
AF
MUTE
Q209,Q210
RSR025N03
×
2 IC201
TA7368F
IC205
TC4S66F
LED
AF_ON
MOD
BAL
SIGNAL
REF
AFOUT
MIX
DIG/ANA
SW
DAFO
CTCSS/DTCS
2TONE
LPF LPF
AMP
AMP
SDEC
CDEC
EEPROM
BUFF
BUFF
BUFF
RESET
AMP A/D
+5V
+3VD REG
IC7
TMS320VC5416GGU120
IC9
AK4550VT
FI1
CFWC450E IC5
NJM2711 IC8
AD7476ART
IC3
XC6204B332M
+1.5VA
REG
IC2
R1230R151F
+3VC REG
IC1
XC6204B332M
IC17
HN58X2416TI
CERAMIC
BPF
MCLK
DSP
CODEC
3.3VC
CLKIN
EXTAL
XTAL
EEPROM
CPU
IC12
HD64F2239TE16
SENC
CENC
DUSE DTCS
SW
CPU
LPF
IC12
NJM12902V IC12
NJM12902V
IC12
NJM12902V
Q300
DTC144EE
IC302
BU4053BCFV
DASW
IC12
NJM12902V
IC302
BU4053BCFV
VR
BEEP
DISC
D-IF
AMP
Q303
2SC4215
NWC
D14
DAN235E
IC310
M62364FP
D13
DAN235E
X2
CDBC450CX24
FI2
CFWCA450G
FI1
CFWCA450F
CERAMIC
BPF
CERAMIC
BPF
Q15 DTA144EE
Q16 DTC144EE
W/N SW
W/N SW
DTMF
DECODE
W/N SW
LPF
LPF
IC12
NJM12902V
IC2
NJM12902V
IC2
NJM12902V
IC12
NJM12902V
X300
CR-800
IC307
HD64F2268TF
X5
CR-803
IC10
NJM2711F
IC15
TC7MET541AFK
IC13
TC7S04F
IC14
S-80928CNMC
X1
CR-798
12.288MHz
DSP UNIT (IC-F70DT/DS only)
IC308
HN58X24128FPI
IC300
LC73872M
DAST
SCK
SC
IC303
M62364FP
4KEY
&10KEY
FSCL, FSDA, KS0-KS3, KR0-KR3
X301
CR-799
DISC
AFOUT
RXAFIN
MIC SW
FM
DASW
SO SIO CCSI OUT
CSK0 PTTO PTTIN BUSY
FM/PM
PM
CP3
EXPOUT
DMI
DMO
DAFO
IC302
BU4053BCFV
AUDIO
PROCESSOR
IC301
AK2346
DET
MIC
MIC
MAIN UNIT
IC2
NJM12902V
X3
CR-796
IC1
LMX2352TM
Q3
2SC4116
Q5
2SC4226
Q20
2SC4226
Q4
2SC4226
Q6
2SC5107
Q17
2SK1771
FI3
FL380
IC4
SPM5001
D15, D16
HVC350B
×
2
D18, D19
HVC375B
×
2
D20 MA2S077
D21 MA2S728
Q308 2SB1132
Q309 TPC6103
Q10
2SC5107
D9, D10
MA2S077
×
2
Q11
2SC5110 Q12
RD01MUS1 Q13
RD07MVS1
IC5
TA75S01F
D23
MA2S111
Q306
2SA1577
Q305
2SA1577
IC311
TK11250CM Q309
TPC6103
Q304
2SB1132
D11
RB706F D12, D22
1SV307
×
2
Q18
3SK293
RF
AMP
Q9
2SC5107
x2
BPF
45.9MHz
FM IF IC
IC3
TA31136FN
SQIN
BPF
MOD
BUFF BUFF
YGR
AMP PWR
AMP
ALC
AMP
TX MUTE
CTRL
DET
PWR
LPF
TMUT
R5V
SW
T5V
SW
+5V
SW
+V5C
REG
POWER
SW
S5V
SW
LPF
136-174MHz
ANTENNA
ANT
SW
DRIVE
AMP
LPF
L30, L31, L33
BPF BPF LIMIT
+5V
CPU5
VCC
PWR
BATTERY
BA
TTER
Y_1
BT1
TX/RX
SW
BUFF
46.35MHz
IF
AMP
XTAL
BPF
TX-VCO
RX-VCO
RX-VCO
RSSI NOIS
D/A
T2
T1
T2
S5V RIPPLE
FIL
PLL
IC
LOOP
FIL
Q14
2SC4215
TX 272MHz-348MHz
RX 364.7MHz-440.7MHz
BAL
REF
15.3MHz
X3
AMP
10 - 1
SECTION 10 BLOCK DIAGRAM
IC-F70̲SEC7-2̲SEC11.indd 9 2/15/2005 10:20:15 AM