Section 9 Block Diagram - Icom IC-R75 Service Manual

SECTION 9 BLOCK DIAGRAM
OPTIONAL
UNIT
UT-106
MCK
MDAT
SPST
SBSY
SPEECH LEVEL
R1254
RV-148
UT-102
(OPT)
IC1281
IC1291
BU4052BCFV
LA4425A
PVR AF AF
VCA
AMP MUTE AMP
BEEP
IC1251
AFMS RFGV
M5282FP
EXT SP
EXT SP
JACK
BT1521
CR2032
INT SP
PHONE BOARD
PHONE
PHONES Q511
JACK
2SA1576 R
Q512
XP4601
BACKUP
SW
H5V
DISPLAY BOARD
LCD
DRIVER
DS101
IC101
HLC7395-012400
HD66100F
BACK
DRIVER DIMV
LIGHT
TLYE1002 X 24 Q11 2SC4116 BL
Q21 2SC4116 BL
Q31 2SC4116 BL
IC101
Q41 2SC4116 BL
HD6433835
Q51 2SC4116 BL
Q61 2SC4116 BL
Q71 2SC4116 BL
Q81 2SC4116 BL
FRONT
VR BOARD
KEY
X111
CM200S
R141(I)
(32.768 kHz)
AFGL
AF GAIN
X112
RFGL CR-567
(9.8304 MHz)
PB1L
R141(O) PB2L
IC401C
RF GAIN/SQL
TC74HC04AF
IC401D
TC74HC04AF
MUP
IC401E
DRIVER
R131(I) MDN TC74HC04AF
TWIN PBT(I) IC401F
TC74HC04AF
R131(O)
TWIN PBT(O)
EP1
RMS20-250-201-1R
MAIN DIAL
DRES
DSPS
MDAT
Q911 RX TOTAL GAIN
MCK 2SK882 GR
R898
DSTB Q912 RV-150 Q891 FI851
IC1101 2SC4081 R FL-65
3SK131 MAS
DINT
MC1496D
IF IF
CERAMIC
AMP AMP BPF
AGC
AGC
FI861
CFWS450HT
IC1201 CERAMIC
BU4052BCFV BPF
3 kHz
IC1211D IC1001 TA31136FN
NJM2058M X1001 CDB450C24
AF
LPF
SELECT
DE- FM IF
EMPHA AMP
IC1211B DET FI871
CFWS450E
NJM2058M
Q1001
IC1211A
FMNL
2SK882 GR CERAMIC
NJM2058M
IC2001 MC13022ADW BPF
AFS1 Q2021 DTC114EU
X2021 CSA3.60MGF103
AFS2
AM
SQLS BUFF
DET
Q1031
SALI
OPTIONAL
2SC4081 R
XTAL
SAMS
BPF
D1061
Q1063
1SS375
2SC4081 R
AGC AGC
AGC
AMP DET
Q1061 XP4311
Q1064 XP4311
Q1051 2SC4081 R
Q1065 XP4311
D1051 1SS357
Q1066 XP4311
METER
SML
AMP
DELAY
BUFF RFGV
CTRL
IC1211C NJM2058M
D831 1SS302
AGRS
AGFS
AGSS
AGOS
AFS1
AFS2
AFMS
AGFS
AGSS
AGOS
NBS
NBLS
MCK MCK
SHIFT
MDAT REG- MDAT
ISTOR
ASTB ISTB
IC1601
BU4094BCFV
HVR
FRONT UNIT
IC1361
AN78L05M
+5
H5V
REG
IC1371
LOGIC BOARD
PQ30RV31
SPST D1371
14V
1SS355
SBSY
RXS
Q1381 2SC1664 Q
REG
AGRS
Q1382 DTC114EU
SQLS D1381 1SS302
RECS
SALI R8
R8V
REG
EMTI
FMNL
SML
RXS
PST3
B5V
PST2 IC1391 TA7808F
PST1
PCO2 +8
8V
REG
PCK
PDAT
DRES
IC1401 TA7805F
MCK
MDAT Q421
+5
DTA144EU 5V
ASTB REG
ISTB
DRIVER PWRC
RSTB
IC1411 µPC1555G2
DSTB
D1412 1SS302
DINT
D1413 MA8051 M
DSPS
BPCK _ 5
_
PWRS 5V
DC-DC
IC401A TC74HC04AF
IC401B TC74HC04AF
Q401 XP4601
D401 1SS355
CPU
DRIVER
IC1751 DS14C232TM
IC231
IC1771 TC7W04F
EEPROM
X25320S
Q1771 2SA1576 R
Q1772 2SC4081 R
D1771 1SS355
IC351
D/R
M52354GP
Q391 DRIVER
2SC4116 BL
D381
MA8051 M
D382
DIMV
MA729
D393 RFGV Q1311 2SC4081 R
1SS355 D1311 1SS355
AFGV
IC391
Q351
S-80842ALMP-DD6
DTC114EU
EMTI
IC392
TC7S08F
DRIVER BEEP
RESET
HVR
BPCK
D711 MA77
D712 MA77
Q801 Q721
FI761 D713 MA77 FI701
IC811 2SC4081 R 3SK131 MAS
FL-272 D714 MA77 FL-23
MC1496D
IF NB
XTAL XTAL
BUFF
AMP GATE
BPF BPF
BW=15kHz
3F3K
2F3K
AGC
Q735 2SC4081 R
Q736 DTC114EU
Q737 XP4311
D732 1SS355
2FTH
NBS GATE
3F6K NBLS CTRL
OPTIONAL
UNLC
XTAL
BPF
D731 Q733 IC731 Q731
1SS375 2SC4081 R LA1150N 2SK882 GR
2FOP
NB NOISE NOISE NOISE
DET AMP AMP AMP
3F15
AGC
AGC
AMP AMP
Q734 Q732
2SC4081 R 2SA1576 R
3FOP
IC1603
TD62783AF
DRIVER
2S3K
2STH
2SOP
3S3K
3S6K
3S15
3SOP
2S3K
2STH
2SOP
3S3K
3S6K
3S15
3SOP
SAMS
SHIFT
REG-
ISTOR
IC1602
BU4094BCFV
DC IN Q96
F1351 2SC4117
FGB 3A
RIPPLE
8V
FILTER
PRO-
TECT
D1351
DSA3A1
PWRC
IC151 Q151
SC-1287 2SC4117
(9.4665MHz)
LPF D/R DDS AMP
PCK
PDAT
PST2
DRES
IC201 Q201
SC-1287 2SC4117
(455kHz)
LPF D/R DDS AMP
CI-V
PCK
PDAT
PST3
DRES
RS-232C
Q3
DTC114EU
D1
DAN222
ULD
UNLC AMP
DULS
DRIVE
MUTE
AMP
Q472
XP4311
R8V
R14V
REG 14V
Q441
2SK1740
FI461
D491 Q442
10dB 1.6MHz
FL-261
HSB88WS 2SK1740
IF XTAL
LPF ATT
AMP
BPF
B0
BW=15kHz 60MHz
AGC
Q381
130MHz 2MHz 1.6MHz
Q471
2SK2171 4
3SK131 MAS POFF
Q382
LPF LPF
2SK2171 4
B1
Q411 PRE
2SC4673 D AMP
2~4MHz
LO SW
BPF
AMP CTRL
B2
PRE1 Q151
PRE1
DTC114EU
REG
3dB 14V 4~8MHz
Q383
ATT XP4311
BPF
IC391 B3
UPC1658G
PRE 8~11MHz
AMP
BPF
B4
PRE2 11~15MHz
PRE2
REG
14V
BPF
Q391
B5
XP4311
15~22MHz
BPF
B6
22~30MHz
BPF
B7
30~50MHz
BPF
B8
50~60MHz
BPF
B9
(69.0115~129.0115MHz)
LOF2
Q91
2SC4405
Q71
LO
LPF
2SK508 AMP
Q72
DTC114EU
Q92 DTA114EU
D71
D91 MA77
KV1470 D92 MA77
Q81
2SK508
Q82 Q21
DTC114EU 2SC4117
6.0MHz
D81
KV1470
AMP LPF D/A
Q93
DTC114EU DDS Output Freq = P/D Freq
VCO
VCOS
SW
P/D DDS
LOOP IC23 IC22
P/D Freq = 30MHz / R FIL TC7S04F UPB1509GV
(R=7,8,9,10)
DIV
AMP 1/4
(1/R)
Q2
2SC4405
(60MHz)
x2 AMP
IC21
SC-1246/A
LOF2
VCOS
DULS
ULD
Q1 X1
2SC4405 CR-275A
(30MHz)
PCK
PDAT
PST1
PCO2
DRES
CR-282
(OPTION)
Q4
DTC114EU
D2
1SS355
RL1
AHY103
RECS DRIVER REC REMOTE
REC OUT
PLL UNIT
9 - 1
CHASSIS
ANT1
(50 Ω)
UNIT
ANT2
(450 Ω)
ATTC
ANTC
60MHz
LPF
LPF
RL141
MZ-12HG
450 Ω to
RL121 50 Ω
20dB MZ-12HG
HPF ATT
PRO-
TECT
D141
1SS302
D142
1SS302
PRE1
PRE2
POFF
ATTC
ANTC
IC561
TD62783AF
IC562
TD62783AF
MCK
SHIFT
DRIVER REG- MDAT
ISTOR
RSTB
B0S
IC551
B1S
BU4094BCFV
B2S
IC552
B3S
BU4094BCFV
B4S
B5S
B6S
B7S
B8S
B9S
PR1S
PR2S
POFS
ATTS
ANTS
MAIN UNIT