Icom IC-7851 Servise Manual page 158

MAIN UNIT (MAIN-5)
7 7 7 8
V+ V+ V+ V+
V- V- V- GND
4 4 4 4
Q2021
LDTC114EE
-6.9
RAIFMS
TC7W53FK
A GND
5 4
RAIF CH1 VEE
6 3
CH0 INH R2033
7 2 2
VCC COM
8 1
2.7K
IC2021 3
R2035
MAIN-1
0
RAAGC_DET
MCLK24M
CLK12M
96K_FRM
6M_BCLK
/ACAL
R2068
DAR_IF
DAX_AF
C2069 47P
SPIAADC_CS
ASPI_MOSI
2
IC2061
ASPI_CLK
ASPI_MISO
3
/BCAL
DBR_IF
NJM4580M
DBX_AF
SPIBADC_CS
BSPI_MOSI
BSPI_CLK
BSPI_MISO
7 7 7 8
V+ V+ V+ V+
V- V- V- GND
4 4 4 4
Q2023
LDTC114EE
Q2022
LDTC114EE
R2154
MAIN-1
-6.9
RBIFMS
2.7K
IC2022
RBIF
A GND
5 4
CH1 VEE
6 3
MON CH0 INH R2153
7 2 2
MAIN-4 VCC COM
8 1
2.7K
TC7W53FK 3
R2155
0
MAIN-1
RBAGC_DET
R2188
C2188
2 IC2181
3
NJM4580M
IC2002
5
VIN
4
VOUT
NJM2871BF04
R2044 1K
C2046 680P
C2047
22P
C2037 R2043
2 4.0
R2045
0.1 2.7K 6
R2046 3
100
IC2041
1k
NJM5534MD
R2054 1K
C2057 680P
C2058
R2034 C2038 R2053
22P
2
R2055
0.1 2.7K 6 AIN-
2.7K
3 AIN+
100
C2036
R2056 1k IC2051
NJM5534MD
22P
6
IC2031 AIN-
NJM5534MD
AIN+
R2066
4.7K
C2066 220P
R2064
6 IC2061
R2067
10K 7
R2063
5
330
4.7K
NJM4580M
10K
R2069
1
100
IC2132
5
VIN
4
VOUT
NJM2871BF04
R2164
1K
C2166
680P
C2167
22P
C2157 R2163
2
R2165
4.0
0.1 2.7K 6
R2166 3
100
IC2161
1k
NJM5534MD
R2174
1K
C2177
680P
C2178
22P
C2158 R2173
2
R2175
0.1 2.7K 6 AIN-
3
R2176 AIN+
100
IC2171
1k
NJM5534MD
C2156
22P
AIN-
6 AIN+
IC2151 R2186
NJM5534MD
4.7K
C2187 220P
R2184
6 IC2181
R2187
7
10K
R2183
5
330
4.7K
NJM4580M
10K
47P
R2189
1
100
9-15
IC2003
1 1 5
3.3
CTRL VIN VOUT
2 2
GND GND
3 3 4
NB CTRL NC
NJU7772F33
IC2250
1
VIN VOUT
2
GND
3
CTRL NC
3.3
NJU7772F33
CP2001
SHORT
R2002
/ACAL
22
1 36 R2001
AGND RST
2 35 CLK12M
VINR- MCKI
3 34 96K_FRM
VINR+ LRCK
4 33 6M_BCLK
VCC1 BCK
5 32 DAR_IF
AGND DATA
6 31
IC2001 22
AGND VDD
7 30
PCM4222PFB
AGND DGND
C2011
8 29
AGND DSDR
9 28
0.1
VCC2 DSDL
10 27
VINL- DSDCLK
26
11
VINL+ SUB0/WCKO C2012
12 25 100 TMCM
AGND SUB1/MCKO
10 C2071
C2072
0.1
R2074
96K_FRM
DAX_AF
6M_BCLK
R2073
SPIAADC_CS
ASPI_MOSI
ASPI_CLK
ASPI_MISO
R2262
R2071
/ACAL
47K
CP2071
C2261 R2261
SHORT
0.01 220 Q2261
L2SC4081
IC2133
1 1 5
CTRL VIN VOUT
2 2
GND GND
3 3 4
NB CTRL NC
NJU7772F33
1
2
3
3.3
CP2131
SHORT
R2132
/BCAL
22
1 36
R2131
AGND RST
2 35
CLK12M
VINR- MCKI
3 34 96K_FRM
VINR+ LRCK
4 33 6M_BCLK
VCC1 BCK
5 32 DBR_IF
AGND DATA
6 IC2131 31 22
AGND VDD
7 PCM4222PFB 30
AGND DGND C2141
8 29
AGND DSDR
9 28
VCC2 DSDL 0.1
10 27
VINL- DSDCLK
11 26
VINL+ SUB0/WCKO
12 25
AGND SUB1/MCKO C2142
100 TMCM
96K_FRM
DBX_AF
6M_BCLK
SPIBADC_CS
BSPI_MOSI
R2272
BSPI_CLK
BSPI_MISO
47K
R2271
C2271
/BCAL
0.01
220
Q2271
L2SC4081
MCLK24M
5 7 7 7
V+ V+ V+
4 V- V- V- GND
4 4 4
IC2111
5.0
6
7
R2113
5
NJM2114M
0
IC2251
1 5
CTRL VIN
2
GND
3 4
NB VOUT
IC2111
2
NJM2871BF05 1
R2116
3
0
NJM2114M
C2073
IC2071 10 F93
1 28 C2076
ZEROL VCC2L
2 27 0.1
ZEROR AGND3L C2086
3 26 22P
MSEL IOUTL-
4 25
LRCK IOUTL+
5 24
DATA AGND2
6 23 C2078 C2077 2
BCK VCC1
7 22 6
10 F93
SCL VCOML 47 F93 R2083
22 8 21 3
DGND VCOMR 47 F93 R2072
IC2081
9 20
VDD IREF 0 NJM5534MD
C2079 10K
10 19
MS AGND1
11 18
MDI IOUTR-
12 17
MC IOUTR+
C2096
13 16 C2074 22P
MDO AGND3R
14 15
22 10 F93 IC2091
RST VCC2R
C2075
0.1 2
22 PCM1795DBR
6
R2093
3
0
NJM5534MD
7 7 7
V+ V+ V+
IC2253
5 V- V- V-
VIN VOUT
4 4 4
GND
4
CTRL NC
NJU7772F33
3.3
6
5.0
R2233
5
0
IC2252
1 5
CTRL VIN
2
GND
3 4
NB VOUT
2
NJM2871BF05
R2234
3
10 0
C2191
C2192 10 F93
0.1 IC2191 C2193
1 28 C2196
ZEROL VCC2L
2 27 0.1
ZEROR AGND3L
R2194 3 26
MSEL IOUTL-
4 25 IC2201
LRCK IOUTL+
5 24
DATA AGND2
6 23 2
C2198 C2197
BCK VCC1
7 22
SCL VCOML R2203
47 F93 10 F93
8 21 3
22
DGND VCOMR
47 F93 R2192
9 20
R2193
VDD 0
IREF
10 19 C2199 10K
MS AGND1
11 18
MDI IOUTR-
12 17
MC IOUTR+
13 16 10 F93
MDO AGND3R
22 14 15 C2194 IC2211
RST VCC2R
R2191 C2195
22 PCM1795DBR 0.1 2
R2213
3
CP2191
0
SHORT
*: Refer to the PARTS LIST for the value and name of component.
MAIN-1
T8V
+8V
+5V
-8V
8 8
V+ V+
GND
4 4
CP2121
SHORT
IC2121
6
7
R2127
5
1K NJM2114M
R2125
IC2121
DAOUT_ACC
470 R2128
3
1
R2126 100
2
NJM2114M
470
MAIN-2
R2105
IC2101
NJM5534MD
DAOUT_AF
470
R2107
3
6
R2106 100
2
470
C2108
22P
8 8
V+ V+
GND GND
4 4
IC2231
7
R2245
NJM2114M IC2241
470 R2248
3
DBOUT_ACC
1
R2246 100
NJM2114M
IC2231 470
1
NJM2114M
CP2241
SHORT MAIN-2
IC2241
7
C2206 R2247
22P
5
1K NJM2114M
6
R2225
NJM5534MD
NJM5534MD IC2221
470 R2227
3
DBOUT_AF
6
R2226
C2216 100
22P
2
470
C2228
6
22P
NJM5534MD