Icom IC-F8101 Service Manual page 64

SECTION 10. BLOCK DIAGRAM
3rd IF 36kHz
IC1403
IC1402
RXIF LPF
TX/RX
SW
TXIF
T8V
TO DSP UNIT
AGC
Q1808
DSP_CLK=64MHz
DSP64MHz ATT AMP
BUFF AMP
IC1604
Q1601 32MHz
REFV
X1601
32.0MHz REF OSC
IC1703 IC1606
DDS HPF AMP
1DST
1CNO
LPF X2 BPF
D1702 D1703
3.3V +1.8
1.8V
REG
IC1704
DDS
DISPLAY-A UNIT
LCD
IC6006
Q6002
Q6003 IC6009 BACK LIGHT
DS6301-DS6324
HV +8V
+8
SW
REG LHEAT
FPWRS IC6008
+5V
+5
DIM LEDC
REG
CTRL
IC6004
IC6010
IC6007
Q6301,Q6302,Q6303
+3.3V FRONT CPU
+3
MICL
REG
MGAIN
FPWRS
IC6011
14V HVLED
+10V
KEYBOARD
REG
CONTROL LINE X6001
14.7456 MHz
COMMON LINE
IC6005
TX LINE
MIC
MIC
AMP
RX LINE
IC6010
DATA LINE
AMP
MGAIN
2nd IF 455kHz
Q1413
Q1411 Q1412 Q1415
D1412 D1420
IF IF
BUFF
AMP AMP
AGC
IC1404
Q1417
D1421 D1419
IF
AMP
AMP
DRVC
AGC
3DST
AMP 1/2 DDS LPF
IC1605 IC1603 IC1601
64MHz BITE
BUFF
DMK
IC1820
MARKER_OUT
BPF AMP ATT LPF
IC1602
256MHz
BPF
D1704 D1706
64.485-79.455MHz
AMP BPF ATT
IC1705
LOF0
D1705 D1707
79.455-94.455MHz
BPF ATT
LOF1
Ck
DT
X1802
16.000 MHz
PTT
RXD
DTFS
TXD
DCLK IC1817
DTXD
DRFS LEVEL
CONV
DSKY
DRES
ALE1
IC5
1CNO
to DSP
IC6014
DRXD IC1818
Q6304
HSKO
LEVEL
VSQL
HEAT
CWST CONV
CTRL
ALE2
TRFD
DSHS
IC1801
FTEMP
+5
HV H5V
REG
SRAM
LEVEL
IC1808
CONV
IC1807
IC1812
Q1805
IC6012,IC6013
D1809
ECK
EDT
RESET
to DSP
RESET
Q1806
IC6001
Q1811
D1814
BU CNTL
MI
1 #31,34,36,41,44,45,46,51,54
MICL
2 #32,33,42,43,52,53
10-1
FI1402
L1446
D1812 D1813
D1418 D1416
CERAMIC
RX
BPF
Q1416
D1417 D1415
IF TX
AMP
Q1803
TXS
T8
T8V
CTRL
FOR
8V
AMS
Q1804
RXS
R8
R8V
CTRL
REF
ICH
ICL
IC1805 IC5 IC1804
STBSEL_A BST
to LPF
STR
STBSEL_B DECODER
BUFF
1DST
STBSEL_C & MULTI
3DST
STBSEL_D
ST7
ST8
to DSP-1
ST9
MC
MDT
DCV
RXS
TXS
STBSEL_A
STBSEL_B
STBSEL_C
STBSEL_D
PWS
DRES
BEEP
CWK
MODPTT
TSTART
MAIN CPU
TKEY
IC1806
TCON
to DSP
GPRXD
GPTXD
EXRXD
EXTXD
RL1
VBUSK
FOR
REF
to PA
TEMP J1102
1
RTCIRQ
ECK ECK
EDT EDT
EEPROM
RTC J4001
2
IC1810 IC1819 PA-A UNIT
ATT
ICH
to MAIN
ICL
13.8V COMMON FUSE
FILTER (5A)
Q4001,Q4008
POW +8
FAN CTRL REG
Q4004
FANV
CTRL
Q5020
IC4001
PWS
1st IF 64.455MHz
Q1810
D1405
RF
RX AMP
D1409
D1414 FI1401
Q1414
D1411 D1408
IF XTAL
AMP RX BPF
15kHz
Q1409
VCT4
D1404
VCT5
IF
D1410 D1407 TX AMP
TX
ALC
AGC
fc=94.455MHz
Q1410
LO 0.03-1.59M
LPF
AMP
D1120
B0
1.60-2.49M
MAIN-A UNIT
D1121
B1
2.50-3.99M
IC1102
D1122
D1130
IC1103
D1138
ALC
ALC
METER
AMP
AMP
B2
POCV
4.00-5.99M
D1123
ALC
AMP
IC1103
D1139
B3
6.00-8.99M
EALC
ALC D1124
Q1118
AMP
D1135,D1137
IC1814
D1136
IDV
B4
AMP
ALC
9.00-12.99M
AMP
ICCV IC1102
D1125
D1128,D1132
AJLC Q1119
D1134,D1140,D1141
B5
IC1104 Q1103-Q1110
13.00-19.99M
D1126
S/P
BUFF
B0-B7
CONV.
BST
B6
20.00-29.99M
IC1105 Q1701-Q1702
D1127
S/P LOF0
BUFF
CONV. LOF1
B7
ATTS
PRON
AJLC
IC1815
AUXG VCT5
AMS
POCV
VCT4
PROF
REFV
DRVC DMK
D/A
ICCV
ID1V
ST7
ID2V
to PA
ID3V
ID4V
FANV
AMP
IC1814
IC1101
D1109,D1110
YGR
ATT
AMP
Q4002 Q4003 Q6851 Q4006,Q4007
J4008 J5001
PRE PWR 1
DRIVE
LPF AMP
DRIVE
AMP AMP
HEAT
HV
SENS
14V
ID1V ID2V ID3V ID4V
BIAS BIAS BIAS BIAS
IC4002
Q4005
TEMP
fc=30MHz
Q1404-Q1407
D1406
LPF
D1403
D1402
Q1401
D1401
BUFF
IC1401
D1131 D1133
Q1116,Q1117
D1129 D1142
RF
AMP
D1112
LPF ATT
Q1111,Q1112
D1113 D1106
PRON
BPF HPF PREAMP
SW
PROF
D1114
BPF
D1115 D1111
BPF TX
RX
D1108
D1116
BPF
D1107
Q1101
RX MUTE
D1117
Q1102
BPF
RL1101
D1105
20dB ATT ATT
or
SW
Through
T8V
D1118
BPF
ATTS
MARKER
D1119
BPF
2
J1101
1.6-2.24M
RL5011 RL5012
J5002
2
LPF
14V
L1S
D5084,D5085 D5086,D5087
2.24-3.3M
D5090,D5091 D5088,D5089
RL5021 RL5022
LPF fc=32M
L2S LPF
D5001
3.3-4.8M
D5002
RL5031 RL5032
LPF
SWR
DET
L3S
4.8-7.0M
RL5041 RL5042
TX MUTE
LPF
CTRL
L4S Q5019
D5082
7.0-9.5M RL5001
D5083
RL5051 RL5052 D5003
RX
LPF
1 L5S TX
9.5-14.0M
RL5061 RL5062
TRXS
LPF
L6S TX
14.0-20.0M SW D5004
RL5071 RL5072 IC5002
LPF
Q5011-Q5018
IC5001
BTR
L7S
S/P
MC
20.0-30.0M BUFF
CONV.
RL5081 RL5082 MDT
LPF
L1S-L8S
L8S