Block Diagram - Icom IC-F2000 Service Manual

SECTION 7

BLOCK DIAGRAM

• MAIN unit (for #11~#19, #21, #35~#37, and #42~#44)
LVIN
X3
15.3MHz
IC7
BAL
VCON
BUFF TCXO
REF
Q26 IC15
PLL
×3
IC
45.9MHz
BPF
IC10
D/A
SQIN
REF
DISC
IC11
LPF
/SUM
LVA
T1
CTCSS/DTCS
T2
CTCSS/DTCS DEC
Q5
DISC
LPF
IC7
LPF
IC24
+3V
REG
DUSE FIL
SELECT
SW
Q19
SENSOR CONV
IC22 IC23
S5V
IC14
RIPPLE
FIL
D10
Q23
RX VCO
LV
LOOP LV
FIL
D11
TX VCO
LVA
LV
D13
IC16 FM
VCO
MOD
SW
Q28
IF IC
RSSI NOIS
IC2
MSK
FM/PM
IC11
DTMF/5TONE
LPF
MOD
AFO
IC13
EEPROM
IC5
LPF
NDIS
LIGHT
RSSI
BEEP
SENC
R155
TEMP
SDEC
LVIN
AFVI
CDEC EPTT
VOXV
CPU [PTT]
IC9
IPTT
[F1]
KEY1
CENC1 (PWM)
KEY2
[F2]
S4
CH IC8
RES
RESET
CSFT CPU5
D6 Q21,Q22
X2
LED
SHIFT
CTRL
SW
12.288MHz
VCO
R5V
SW
Q25,
D9,D10
D16,D17
Q30 Q31
TX/RX
BUFF BUFF
SW
Q27,
D11,D12 Q32
BUFF 353.65~423.65MHz
LPF
×2
R5C
FI1 D18
Q33
Q37
46.35MHz
IF
XTAL
BPF
AMP
BPF
MIXER
IC4
LIMIT
SPLT HPF EMPH COMP
AMP
MSK MSK
SCRM BPF
Mod De-Mod
AMP EXP EMPH HPF LPF
VOXV
X1
14.7456MHz
SDEC
IC21 DS2
LCD
LCD
Q41 DRIVER
LED DS3,DS4
+5V
CTRL
S6~S21
DS5,DS6
KEY
DS7,DS8
MATRIX
DS9,DS10
Q17
T5C
AF VOL
T5
Q16
IC20 R5C
PWON
REG
+5V
VCC REG
Q15
REG
S5C
IC6
CPU5
REG
F1
1 2
YG VCC
HR
DS1
7-1
MAIN UNIT
Q35 Q36 Q38
PRE
PWR
DRIVE
DRIVE
AMP
AMP
IC17
APC
AMP
D29 D21,D30 D25,D31
Q39
RF
BPF BPF BPF
AMP
RSSI AGC
CTRL
T2 T1
Q43
AMP
Q3
EPTT
PTT
DET
IC2
AMP
MIC
ATX
GAIN
MGC0,
MGC1
D5
IC3
IC1
DET AMP
AFO AF
AMP
AF
AMP
AFON
S5V
PWR
VCC CTRL
Q9,Q10
T5V
Q20,D7
CLONE
BUFF
R5V
Explanatory notes
S5V
+5V
CPU5
400.00~470.00MHz
ANT
D19,D27
ANT
LPF LPF
SW
PWR
DET
D22,D23
Q40
MUTE TMUT
SW
T1
J1
IC12
MC1
AF
AMP
Q1
AUTO_TX
CTRL
J2
SP1
SP
SPRING
MP13
CONTROL LINE
COMMON LINE
TX LINE
RX LINE
DATA LINE