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10 - 1
SECTION 10
BLOCK DIAGRAM
IF IC
LVIN
8V
RSSI
T2
TMUT
NOIS
IC12: TA31136FN
136 – 174 MHz
REF
45.9 MHz
DET
SQIN
46.35 MHz
182.35 – 220.35 MHz
RSSI
S-AV32: IC-F1721/D, F1821/D
S-AV33: IC-F1710, F1810
15.3 MHz
BAL
MOD
DIGITAL CPU
DIGITAL DSP
CDEC
T8V
REG
R8V
REG
+5V
REG
+8V
REG
REG
REG
REG
3VB
3VC
3VA
VCC
POWER
SW
TMS320VC5416PGE120
SIGNAL
FI3
Q3: 2SC4215
SW
Q28: DTC144EU
Q29: DTC363EK
D34: MA2S111
D36: DAN202U
VCC
CENC
DUSE
DTCS
SW
I/O
D0-D7
DMMT
DRMT
I/O
EXT
AL
XT
AL
SCK
SSO
TXC
LV
ADJ
LV
ADJ
RLVA
TLVA
RLVA
TLVA
MAIN CPU
CPU5
REG
H_OUT1
H_OUT2
HANG
MMUT
VCC
C_RES
BUSY
3VA
CTS
RTS
GND
RXD
TXD
H_GND
J11
SCK
DSDA
DTMF
DECODE
D19, D20
MA77
×
2
D23, D26
HVC375B x 2
D17, D18
HVC350B x 2
D16: HSB88WS
L22, L23: 617DB x 2
D/A
IC30
M62334FP
SDEC
IC6
LC73872M
BEEP
Q7: DTC144EU
IC41
VCON
CLKIN
HV
IC40
AN78L05M
IC31: XC62048332M
IC32: R1114N151B
IC33: XC6204B332M
IC36
TA7808F
Q34
2SD1664
Q30: 2SA1577
Q31: 2SB1132
IC20
HD64F2239TE16
IC23
HD64F2268TF
AFO
MFDA
FMDA
CLI
CLO
PTT
AFO
MIC
POSW
J2
FRONT CPU
HD64F3687
IC3
DIAL
AF VR
DIUD
DICK
AFVI
IC5
TC75S51F
MIC
FRONT
UNIT
MAIN UNIT
IC-F1721D/F1821D only
RDAT
MMUT
RMUT
KS0
KS1
KS2
OPF0
OPF1
OPF2
DISC
T1
T2
Tx 272 – 348 MHz
Rx 364.7 – 440.7 MHz
KYP2
KYP0
KYP1
KYP3
KYP4
KYUP
KYDN
D-SUB25
RCK
PWR
POSW
PWON
MD1
PWR
DAFON
CSO
CIRQD
PTTOT
S00
CCS
CCK
PTTI
BUSY
Q13, 14: PMBFJ310 x 2
Q10: 2SC4215
IC7
DS1
F
CPU5
L4-0013TVY-1
KR3
KR2
KR1
KR0
RDAT
RCK
ALC
COM-
PRESSOR
PRE
EMPHA
Scramble
Encode
DMI
LINER
CODEC
TMUT
TXC
MOD
DMO
FM/PM
SWITCH
MICA
TONE
D/A
MOD
to TX VCO
D/A
to TCXO
BAL
DASW
FMPM
DFIL
DASW
DET
DAFO
Decode
Scramble
EXPANDER
RMTO
D/A
IC2
AK2346
D/A
D/A
TENC
SENC
MOD
VCO SW
TENC
D/A
BEEP
TXC
CONTROL LINE
DIGITAL
IC15
NJM2711F
CFWC450E
EXT MIC
LPF
ANT
SW
PWR
AMP
FIL
RIPPLE
PLL
IC
X3
BPF
BPF
BPF
RF
AMP
APC
AMP
BPF
XTAL
IF
AMP
BPF
CERAMIC
BUFF
BUFF
BUFF
LPF
YGR
AMP
TX/RX
SW
AMP
BPF
CERAMIC
LCD
DRIVER
LPF
AMP
AMP
A/D
BPF
CERAMIC
IF
AMP
AF
AMP
AF
AMP
LPF
RESET
BUFF
EEPROM
BUFF
LPF
BPF
LPF
LPF
EEPROM
AMP
AMP
AMP
LCD
ALC
AMP
MIC
AMP
HPF
LIMIT
AMP
LPF
AMP
AMP
LPF
AMP
LPF
HPF
AMP
LPF
X2
FIL
LOOP
AMP
PWR
DET
D38, D40
1SS375 x 2
X2
CR-794
MUTE
SW
D41: MA2S728
D31: UM901F
D27: MA77
IC29
Q9
2SC4116
IC4
LMX2352TM
Q1
2SC4116
X4
CDBC450CX24
3SK293
Q24
IC37
TA75S01F
FI4
FL-380
Q6
2SC4215
FI2
CFWM450G
Q22
2SC5107
Q20
2SC5107
Q4
2SK880
Q23
2SC3356
IC1
NJM12902V
FI1
CFWM450E
AGC
Q26: 2SK1829
WIDE
D2, D4: DAN202U
×
2
SED1526FOA
IC1
NJM12902V
IC1
NJM12902V
Q42
2SJ377
IC16
AD7476ARTZ
IC39
TA8225L
SP1
IC38
LA4425A
X1
CR-765
IC9
NJM12902V
IC24
S-80928CNMC
X6
CR-771
IC19
NJM2711F
IC21
TC7MET374AFK
IC25
TC7MET541AFK
IC28
HN58X2416TI
IC22
TC7S04F
TXVCO
Q12: 2SC4226
D8, D9: HVC376B x 2
D13
HVC375B
X3
CR-563
IC26
HN58X24128FPI
X5
CR-520
OPC-1414
X1
CR-520
POWERSW
DAN202K
D14
MUTE
IC34
TA75S01F
TC4W53F
IC8
IC9
AN6123MS
IC44
TA75S01F
IC18
AK4550VT
BU40538CFV
IC42
IC13
NJM2115V
IC43
BU40538BCFV
IC8
M62363FP
IC8
M62363FP
BU40538CFV
IC42
CP7
BU40538CFV
IC42
IC8
M62363FP
IC8
M62363FP
IC8
M62363FP
IC9
NJM12902V
D12: 1SV239
Q19
2SC5107
D11
HVC375B
Q46, Q47
2SC4116 x 2
RXVCO
Q11: 2SC4226
D6, D7: HVC376B x 2
Q17: DTC144EU
Q18: XP1214
Q21: 2SC5107
IC8
M62363FP
AFON
AFONO
HLC
COMMON LINE
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
DATA LINE