Icom ic-r20 Service Manual page 16

Jan. 2010
to RF UNIT J1
B_DET
21
20 LD2
• LOGIC UNIT
B_R3V
+3S
GND
GND
B_NOISE (BOTTOM VIEW)
B_VCO2
B_RSSI
B_VCO3
+3V
B_VCO4
GND
PLLCK
PLLBSTB
J5
PLLDATA
PLLDSTB
STR2
VP
HFC
GND
B1C
PLLESTB
B2C
PLLCSTB
B3C
PLLASTB
D
RFO
CLK
A_DET
LD1
A_R3V
EAR
GND
A_VCO1
A_NOISE
A_VCO2
A_RSSI 40
GND
1
[R-DIAL]
C38
C41
C34
[L-DIAL]
[SP/CI-V]
LCD
J9
R203
R204
R139
C26
R143
IC12
R33
R148
R103
R149
R99 R89
C56
C140
C53
C163
C59 C160
C184 C81
C74 C48
C72 C79 C73
C117
R170
C71 C78
C165 C155
C169 R176 R158 R140
C67 C76
R159 R144
IC13
C66 C75
R145 R150
R141 R151
C166 C133
R153
R163 C142
R128 C164
C181 R135 C161
C179
R6
C118
C167
R172 C157
C171 R178 R160
C97
R161
R146 C102
R142
IC5
C168 R156 C116
C47 R84 R91
C120
R95 R101
Q12
R164
Q16
R125
R137
C111 R123
C39
R120 C125
EP8 C96
IC4 Q22
R114 R108
Q19
C85 R107
R119
C84
R214
C86 R212
R211
R40
C37
R57
C189
[DC]
C127
R105
R112
R190
R94
R191
Q13
IC9
C174
Q20 C186
R2
C89
R200 R87
C128 C45
C106
R217
R113
C114 C105
R1
Q21
R17
C14
C5 C12
R21
IC8
C6 C11
R30
C8 C10
R3
C9
C4 C82
C3 C23
C1 C2
R9
R10
IC3
R18
R83
R22
R24 R180
R26 R66
R7
R31
R67 R76 Q29
C24
R68 R74
R36
R69
EP13
C35 C16
C30
X1
R72
R4 R71
C27 R70
D14
IC2
R28
C22
C7
Li-ion Battery
– +
D2
CP2 CP1
CP4 CP3
D5
D7 D8
D10 D11
R43
R45
R167
C194
C149 C143 C135 C131
D25 D24 D23 D22
C144 C138 C132 C126
15
The combination of top side and bottom side of this