Icom IC-7700 Service Manual page 101

MAIN UNIT (MAIN-2)
+15V
-12V_
+8V
REF8V
R1881
D3R3V
0
R1911
BAND
0
R1913
IDHV
R1912 0
IDLV
0
R1887 MMUT _
MMUT
R1888 0 MCPS_
MCPS
R1889 0 SMUT _
SMUT
R1890 0 SPON_
SPON
R1891 0 AFON_
AFON
0
R1882 MDAT _
MDAT
R1883 0 MCK_
MCK
R1884 0 MSTB1_
MSTB1
R1885 0 ASTB1_
ASTB1
R1886 0 D RESL_
DRESL
0
D RESL_
C1801
R1892 AFGV2_
AFGV2 0.1
R1893 100 AFGV1_ I C1801
AFGV1
1
R1894 100 PHL2_ MSTB1_ 16
PHL2 STROBE VCC
R1895 100 PHL1_ MDAT _ 2 15
PHL1 DATA OE
R1896 100 FANV_ MCK_ 3 14
FANV CP Q4
R1897 0 SATT_ 4 13
SATT Q0 Q5
R1898 0 DRIV_ 5 12
DRIV Q1 Q6
R1899 0 MIGV_ 6 11
M IGV Q2 Q7
R1900 0 AAFV_ 7 10
AAFV Q3 QS2
R1901 0 MODV_ 8 9
MODV GND QS1
R1902 0 RAMS_
RAM S
0 CD74HC4094M
I C1841
1 16
STROBE VCC
2 15
DATA OE
3 14
CP Q4
4 13
Q0 Q5
5 12
Q1 Q6
6 11
Q2 Q7
To MAIN-1 7 10
Q3 QS2
8 9
GND QS1
CD74HC4094M
IC1921
1
VSS GND
MIGV_ 2
AO3 AO2
DRIV_ 3
AO4 AO1
POCV 4
AO5 DI
BNDV 5
AO6 CLK
SATT_ 6
AO7 LD
7
FANV_
AO8 DO
8
AO9 AO12
9
AO10 AO11
10
VDD VCC
M62352AG P
AFGV1_
AFGV2_
MODV_
AAFV_
PHL1_
PHL2_
RAMS_
R1904
EALC
R1903 0
ALC
0
R1914
VD
R1905 0
ALCL
R1906 0
FORV
R1907 0
REFV
R1908 0
T8V
R1909 0
IDL
R1910 0
VD L
0
-12V_
+8V EP1911
MPZ1608S221A
BAND_
I DHV_
I DLV_
VDL _
R1822 100 HFS IDL_
R1823 100 50M S
R1824 100 AMS_
R1833 100 MMUT_
R1834 100 MCPS _
R1835 100 SMUT_
R1859 100 SPON_
UNS B
R1860 100
R1861 100 FMS
R1863 100
D2051
ALCL_
1SS355
VD_
AFON_
R2043
10K
R2044
10K
20
19
18 I C1931
17 1 14
Q2051
16 2 13 2SA1576
15 3 12
14 4 11
13 R1932 5 10
12 6 9
R1933 10K
11 10K 78
NJM2058V
R1935
R1934 10K
10K
POCV
BNDV
EALC_
ALC_
VD_
ALCL_
FORV_
REFV_
_T8V
IDL_
VDL_
10 - 11
R2092
100K
R2095
13
14
100K
12
I C2051
NJM2058V
2
D209 1
1
3
1SS355
I C2051
NJM2058V
R2010
220K
D2004
13
R2002 D2001 R2007
14 1SS355
R2020 D2005
1K 12
1SS355 100
IC2001 1SS355
R2001
N JM2058V NTCG16
1K
R2024
D2002
1SS355 R2022 R2025
R2012 330K
R2008 220K
9 6
R2014
8 7
1.2K
10 5
330
I C2001 I C2001
NJM2058V
NJM2058V
R2011
R2021
47K 100
4
V+ I C2001
GND NJM2058V
11
R2015
-12V_
D2003
Q2003
470
DTA144EE
MA8047
R2016
D205 4 R2076
Q2002
470
2SK3018
MA2S111 47K
C2051
R2067
C2059
0.001 3P
D2052 220K
R2051 R2062
MA2S728
3.3M
R2053 1.5M
9
8 1.5M 2
R2054 R2061
10 1
R2066
2.2M 3
I C2051 330
I C2001
NJM2058V 220K
NJM2058V
Q2056
DTA144EE
R2045
Q2055
470K 2SC4213
C2045
0.001
6
Q2057
R2046
7 DTC144TE
C2060
5
I C2051 330
NJM2058V
0.1
MA2S077
R2048
R2060
D205 3
68K Q205 8
2SK3018
R2055 100K
220K
Q205 9
2SC408 1
R2064
1K
47K
R2028 R2029
6.8K 6.8K
470
R2027
470
R2030
47K
4
I C2051 V+
NJM2058V GND
11
R2023
100
FORV_
R2070 R2073
33K 22K
Q2060
3 4
2 5
1 6
UMH11N