Icom IC-T70A Service Manual page 34

SECTION 9. BLOCK DIAGRAM
MAIN UNIT (1/2)
J700
SP1:
K036NA511
CHASSIS
MC1:
EM6022P
5VS
J4: Q7:LDTC144
MIC
SW
5VS
S1:
SW-149
PTT
INTPTT
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BTL5V PS5
IC1:TPA0211
VO+
AF AF
D/A
AMP
VO-
IC4:M61545AFP
AFSTBY VOLCK,VOLDA
IC5:R2A20178
BEEP/DTMF
D/A
DADI,DACLK,DALD
5VS PS5
IC4:M61545AFP IC909:TC7S66
MIC MIC
D/A
AMP MUTE
IC800B:NJM2746
VOLCK,VOLDA MMUTE
5VS
PTT 5VS
Q4:2SA1832
CONT
VOX
AMP
IC800A:NJM2746
D800:L1SS400
Q11:UNR911FG
Q1:LDTC144
D1:MA3J742
CLIN
CLONE
CLOUT
5VS
LCD LIGHT
CPU
LIGHT
Q203:2SA1832
DS200:VYPY1111C
DS201:VYPY1111C
TOOLS0,TOOLS1 IC907:UPD78F1508
FLMD0
FLASH
D200:HVC376
CLK CLSFT
SHIFT
12.288MHz
X200:CR-864
S270:
TP70D974E20
DICK
UP
E LCD
DIUD
DN
DS204:TAK-35414
9 - 1
R5
BPF LPF
Q8:XP6501
PS5 PS5
HPF BPF LPF
IC2A:LMV324 IC2D:LMV324
BEEP/DTMF
CTCOUT
LPF LPF BPF
Q204:UNR9213
DTCS
DADI,DACLK,DALD,IOSTB,IOEN
UNLK
SD
NOISE
SQLSW,WN
PLLSW
TXMUTE
RTEMP,TTEMP
VIN,BTVIN,BTSENC,TXV-I
DCIN,BTDET
CHGC
R5C
TXC
PS5C
PCON
CPU5V
RESET
KR0-3
KS0-4
ESIO,ESK
IC200:S-80942
EEPROM KEYBOARD MATRIX
IC201:S-24CS64 D251-D264:L1SS400
DETO DETO
DETMUTE
CTCIN
RTONE
5VS
MOD
PS5
RMOD
AMP
D/A
IC2C:LMV324
DADI,DACLK,DALD
IC5:R2A20178
CPU5
SHIFT
REGISTER
DADI,DACLK,IOSTB,IOEN
IC908:CD4094BPWR
RTEMP CPU5V
TEMP
DET
R5
MUTE
SW
IC904:TC7S66FU
R5
TONE
FIL
Q10:XP6501
LPF
VCOMOD
REFMOD
REFCON
DET
BPF1,BPF2
BPF3
VVCO_SEL,UVCO_SEL,
VCO_SHIFT,VCO_MUTE
VHFC,UHFC
DTCS
WN
UNLKUNLK
RSSI
NOISE