Icom IC-7851 Servise Manual page 143

IC571 IC502
EM639165 EN25Q40A
FLASH
SDRAM
MEMORY
SST0
SCOPE IN/OUT
S2IF=48.0kHz
SDSPX/SDSPCR
SCK/SDAT
SDSPCX/SDSPR
IC602-IC604
IC601 IC311
SDSPX
AK4621 TS462x3 TS462
D301
HSMS-2829
DSP A/D BUFF AMP
DRESD
192.0ksps
IC501
TMS320C6745
IC581
SN74AHC138
X501
CR-891A
SST0/SSTB1
DECODER
24.576 MHz
SSTB2
SSA/SSB/ATT10/ATT20/SFILW
Q411
L2SC4081
10MHz
ATT ATT AMP LPF ATT
SCK
SDAT
SSTB2
/CAL
Q111
L2SC4081
ATT AMP LPF ATT
SCK
SDAT
SSTB1
/CAL
S1IF=46.35MHz
IC231 IC211 FI211 IC212
BGA616 SKY13350 FL-455 SKY13350
RF XTAL RF
ATT AMP ATT
SW BPF SW
BW=25KHz
FI212
FL-442
S2Lo SFILW SFILW
46.398 MHz XTAL
BPF
BW=10kHz
IC481
IC401
HMC832 BGA616
PLL
ATT AMP LPF ATT
IC
MCLK=10MHz
IC171
IC101
HMC832 BGA616
PLL
HPF LPF ATT AMP LPF
IC
MCLK=10MHz
(64.485∼124.455MHz)
(64.555∼124.455MHz)
(64.585∼124.555MHz)
8-5
IC71-IC72 IC61-IC62
Q91
MT3S20P SKY13350x2 SKY13350x2
D201
HSMS-2829
20dB
ATT LPF AMP BPF
ATT
ATT20 ATT10
IC51
SKY13350
S1Lo
MAIN:109.805 - 111.805 MHz
SUB :109.905 - 111.905 MHz RF
SW
IC31
NJM7805
SSA
+5
+5V
+8V
REG
IC36
BA033
+3.3
+3.3V
REG
IC503
ATT
XC6222D121
+1.2
+1.2V
+3.3V
REG
R1LOA
T1LO
T2LO
(64.0MHz)
R2LOA
LOCAL UNIT
(64.491MHz)
R1LOB
MKRA
(100KHz)
MKRB
(100KHz)
T3LO
(0.491MHz)
SCOPE UNIT
10MHz
OSS1/OSS2
IC52
SKY13350
TSCP_IF
10dB
RF
ATT SW
Q1061 Q1062
L2SC4081 L2SC4081
T8V
BUFF AMP
Q42/D41/Q44/D42
2SK3018/1SS390/2SK3018/1SS390
SCP_IFA
MUTE
SCP_IFB
REF I/O
SSA ATT
SSB
LPF
10MHz
1LOAFIL1
1LOAFIL2
10MHz
1LOAFIL3
1LOAFIL4
1LOAFIL5
MKRAS
1LOBFIL1
1LOBFIL2
1LOBFIL3
1LOBFIL4
1LOBFIL5
MKRBS
LOCAL_+8V
LOCAL_+5V
IC1003
XC6221A332
+3
LOCAL_+3R3V
REG
OSC UNIT
Q1012-Q1013
LDTC114EEx2
OSS1
I/O
CTRL OSS2
Q1011
LDTC114EE
RL_CTRL
Q1201
L2SC4081
LPF
BUFF
Q1023
LDTC114EE
SW
Q1010
LPF AMP
LDTC114EE
Q1022
2SC4215
RL_CTRL
Q1043
LDTC114EE
SW
Q1021 X10
L2SC4081 CR-772A
(10MHz OCXO)
AMP
BUFF
Q1042
IC1091
2SC4215
AD5260
OCK/ODAT/OCS
CAL
IC10
BA12
+15V +12
REG
IC1101
SN74AHC595
S/P
LCKFX/LDATFX/LSTB/DRESH
CONV
IC1111
SN74AHC595
S/P
CONV
IC1001
NJM7808
+8 +11V
REG
IC1002
NJM7805
+5 REG+8V
REG