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8-1
SECTION 8
BLOCK DIAGRAM
Q9
IC706,D708
Q7
MC700
Q705~Q707,
Q711
Q6
J700
CLONE
BUFF
Q401,D413
AUTO_TX
CTRL
Q704
VHF
LPF
MUTE
SW
Q2,Q4,
D2
X2
TCXO
IC701
IC817
IC702
D6~D9,
D13
LCD
BACKLIGHT
DS401,DS402
Q400,
BAT -
BAT +
IC707
+5V
IC818
S5V
Q716,Q717
T5V
Q718,Q720
Q712,Q723,
D711,D714,D717
POWER SW
S700
S401
[PTT]
[SP]
[MIC]
S400
DS400
IC400
IC403
INITIAL
MATRIX
D400~D407
X400
Xtal
PTT
DET
Q703
IC817,
D705,D706
Q8
D4,D5
MIC GAIN
CTRL
Q721
IC701
IC819
Q722,D700
KEY
MATRIX
S401~S413,
S415~S418
D408~D411,
IC1
R4
Current
DET
IC1,Q10
IC820
PWR
AMP
AF
AMP
DRIVE
AMP
PWR
CTRL
PRE
DRIVE
AF
AMP
LPF
MIC
AMP
AF
AMP
D/A
ANT
SW
LCD
EEPROM
RESET
RF
AMP
BPF
ALC
AMP
AF
AMP
APC
AMP
APC
AMP
136~174MHz
AFON
ATX
S5V
VCC
Direct
Conversion
IC3
TMUT
T5V
+3.3V
AFO
ATSCK,
ATSDA
ATSQ,
ATDTMF,
BEEP
CLO,CLI
MDET
+3.3V
VCL,VDT
AFVO
S5V
13.00MHz
+5V
VCC
T5V
MICIN
+5V
CPU
IC402
HV
VCC
+3.3V
DC-DC
S5V
S5C
+5V
+3.3V
T5V
POW
SW
TXC
BATV
POSW
PWON
PWR
CTRL
XPTT,PWSW
TMUT,TXC,ATX
IPTT
TEMP
SEG1~SEG25,
ESCL,ESDA
+3.3V
R.Enc
DIUD,DICK
COM1~COM4
NRST
+3.3V
ISO1~ISO2
12.288MHz
CPUCLI
CPUCLO
+3.3V
CSFT
CSFT
PWON,S5C,RFPWR,
VOXV
ATCTS
XPTT
VOXV
VOX
AMP
S5V
RFPWR
MIC1,MIC2
+5V
+3.3V
LIGT
S5V
CL
+3.3V
KS0~KS3
KR0~KR3,
KS0~KS3
AFON,MIC1,MIC2
VCC
+3.3V
RFPWR
MUTE
SW
RMUT
SP1
J701
3620
MP4
4
3
2
1
MAIN UNIT
Explanatory notes
RX Line
TX Line
CONTROL Line
DATA Line
COMMON Line
Voltage Line (HV)
Voltage Line (VCC)
Voltage Line (+5V)
Voltage Line (+3.3V)