Icom IC-7851 Servise Manual page 148

LOGIC UNIT (LOGIC-2)
EP2101
MPZ2012S601A
17
L2101
SLF6028T-100M1R3-PF 10U
5 16
SYNC PGND
6 15
LBO SW
7 14
LBI SW
8 13
R2102 VINA PG
DCLK#
100
IC2101
TPS62110RSAR
EP2121
MPZ2012S601A
17
L2121
SLF6028T-100M1R3-PF 10U
5
16
SYNC PGND
6 15
LBO SW
7 14
LBI SW
8 13
R2122 VINA PG
DCLK#
100
IC2121
TPS62110RSAR
EP2141
MPZ2012S601A
17 L2141
SLF6028T-100M1R3-PF 10U
R2141
5 16
DCLK
SYNC PGND
6 15
100 LBO SW
7 14
LBI SW
8 13
VINA PG
IC2141
TPS62110RSAR
R2165
IC2161 5
14 1
VCC 1CLR
4
13 2
2CLR 1D
12 3
R2161 2D 1CK
DCLK 11 4
2CK 1PR
10 5
100
2PR 1Q
9 6
R2162
2Q 1Q
DCLK# 8 7
2Q GND
100
SN74AHC74PW
Measurement condition:
Frequency: 14.1 MHz
Mode: USB
*No signal is received.
*No modulation on transmitting.
Range Input impedance
200mV
2V
20V,200V,1000V
TX
RX
RX
5.1
H3R3V
VDD5V
IC2051
1
EP2102 VIN
2
VSS
3
MPZ2012S601A CE
XC6221A332MR
R2104
39K
R2105 EP2201
100K
MPZ2012S601A
R2201
3.3
DCLK2 5
6
100
7
8
VDD3R3V
EP2122
MPZ2012S601A
R2124
100K
R2125 EP2221
150K
MPZ2012S601A
5.0
5
6
7
8
R2222
DCLK2#
I5V
100
EP2142
I5V
MPZ2012S601A
R2144
39K
R2145
100K
100 EP2241
C2165
MPZ2012S601A
0.1
IC2162
1
2
3
MP2101
TC4SU69F
R2167
1M
3182 R2241
DCLK
100
X2161
CR-838
EP2242
MPZ2012S601A
100 MΩ
11 MΩ
10 MΩ
Unit：V
9-5
VDD5V
VDD3R3V
3.2V
When USB-B connector is used.
3.3
USB3R3V
H3R3V
IC2061
5 1 5 USB3R3V
VOUT VIN VOUT
2
VSS
4 3 4
NC CE NC
XC6221A332MR
5.1
17
H5V
L2201
SLF6028T-100M1R3-PF 10U
16
SYNC PGND EP2202
15
LBO SW
14
LBI SW
MPZ2012S601A
13
VINA PG
R2204
IC2201
39K
TPS62110RSAR
R2205
100K
1.5
VDD1R5V
EP2223
17
L2221 MPZ2012S601A
SLF6028T-100M1R3-PF 10U
16
SYNC PGND EP2222
15
LBO SW
14
LBI SW MPZ2012S601A
13
VINA PG
1.5
IC2221
TPS62110RSAR
R2248 R2249
10K
12K R2250 C2242
15K VDD1R1V
0.0015
C2253
820P
C2243
10
L2241
NR10050T 2R9N 2.9U
EP2243
MPZ2012S221A
Q2241
SSM3K131TU
1 24
PGOOD1 SW1
2 23
SCFG BST1
3 22
SYNC DL1
4 21
GND PGND
IC2241 C2249
5 20
INTVCC ADP2323ACPZ VDRV
1
6 19
Q2242
RT DL2
7 18
SSM3K131TU
MODE BST2
8 17
PGOOD2 SW2
L2242
3.3U
MPZ2012S221A
C2256
10
C2254 820P VDD1R8V
R2257 C2257
12K 820P
R2255 R2254
MP2201
10K 20K
3182
Q2011
TJ50S06M3L
Q2012
LDTC114EE
R2012
47K
Q2021
2SB1132L
R2021 EP2021
4.7
MPZ1608S601A
R2023
Q2022
L2SA1576AR
100K
R2308 R2309
82K
4.7K R2310
27K
C2303
0.1
EP2301
C2304
MPZ2012S601A
1
PGOOD1
2
R2301
SCFG
DCLK2 3
SYNC
4
100 GND IC2301
5
INTVCC
ADP2323ACPZ
6
RT
7
MODE
8
PGOOD2
MPZ2012S601A
+8V C2305
EP2302
C2306
0.022
R2313 C2307
47K
R2314
10K
R2311
Q2322
LDTC114EE
2.2K
1.1
10 TMK316BJ 25V X5R
D6162
EP2351 10 TMK316BJ 25V X5R
C2352
DB2141300L MPZ2012S601A
C2353
PGND
13
SW
14
BST
15
1.8 PVIN ADP2384ACPZN
16
PVIN
17
PVIN
18
C2355
EP2244
0.1
IC2352
1 5
C2363
2
3 4
0.1
R2356
TC4SU69F 100
R2352
DCLK2#
R2353
100
100K
*: Refer to the PARTS LIST for the value and name of component.
H15V
+8V
VBUS
LG_PWR
PWRS
J2001
LOGIC-1
BT3R0V
VDD5V
VDD3R3V
VDD1R5V
VDD1R8V
VDD1R1V
VDD1R5VB
H15V
H5V
H3R3V
+15V
+11V
+8V
+3R3V
-12V
+3R3VL
USB3R3V
MIC8V
MIC8V
+3R3VL
7.9
-12V
+3R3V
+11V
C2302
820P
10.9
10
+11V
L2301
CER8065B-8R2N 8.2U EP2303
MPZ2012S601A
Q2301
24 SSM3K131TU
SW1
23
BST1
22
DL1
21 C2310 3.3
PGND
20
VDRV
19
1 Q2302
DL2
18 SSM3K131TU
BST2
17
SW2
L2302
EP2304
MPZ2012S221A
SLF7045T-3R3M2R5-PF 3.3U
EP2305
MPZ2012S221A
MP2301
10
3.3
+3R3V
3182
470P
-12V
F2351
EP2352
1 2
MPZ2012S601A
ERBRE1R25V
-11.5
L2351
SW
6
SW
5
3.3U
GND
IC2351
4
VREG
3
FB
2
COMP
1
MP2351
3182