Icom IC-RX7 Service Manual Addendum page 26

Feb. 2009
• LOGIC UNIT (Right side)
CPU-MAIN
L1
10U
IC11
C127 C131
1 8
2 7
1 1
CKO 3 6
4 5
3076 TC7W04FU
MP 6
C115
68P
C122 C128
1 1
TCON
VCC
CPU3V
VCC
Power ON : 0.0V
Power OFF:3.2V
PCON
R3C
AF ON :3.2V
AF OFF:2.7V
2SB1201
R86
0
AFO
R250
150K
R85
CLONE
68K
SPO
Q29
2SC4213
NJM2070M
Q30
UNR9115J
INT SP 5 5 4 4
6 6 3 3
C70
7 7 2 2
8 8 1 1
2 150 MSVD2
IC9
1
AF ON :3.1V
AF OFF:0.0V
CPU-LOGIC
COM:12.7V
VP_DC-DC
EP8
KY-058
1
C137 C142 C149 BW
1 1
C87
0.1
C134 C138
1 1
IC3
R117
5 1
VOUT VIN
2
GND 0
4 3
Q2 NC CTRL
2SA1588
NJU7775F32
IC4
R107
5 1
VOUT VIN
2
470K
GND
4 3
NC CTRL
NJU7775F32
Reg
Q11
Q12
XP1501
5
IC19
1
AF ON :0.6V
4
AF OFF:2.6V
3
C193
AF AMP 2
0.001
1
LMV321IDCK
C76 IC10
R105
C83
1 16
RSTN MDT
2 15
0.1 10K ADRS1 MCK
3 14
ADRS2 MLEN
4 13
DVDD DVSS
5 12
C99
LOUT ROUT C188 R225
6 11
LI N RIN
7 10
0.0068 27K
0.1 AVDD AVSS
8 9
VRL VRR
SM6451B
AF VR
BAR ANT
XP4601
GR
3 4
2 5
1
D19 6
Q21
SVC347
Q16
UNR9115J
R142
82K
R118 R121
IC12
1
120K 12K
2
3
4
LM2904PWR
CTONE
AF FIL
10
R128
Q20
XP6501
MA2S111
C101
R223 R224 R220
C108 D22 C117
Q18
5.6K 5.6K 4.7K 0.033 0.033
1
C189 0.068
C190
0.068
4.7K
R221
R226 0.0068
27K C187
FM MODE:3.1V
AM/WFM AF FILTER OFF:0.0V
IC20
1 14
I /O1 VDD
2 13
O /I1 CONT1
3 12
O /I2 CONT4
4 11
I /O2 I /O4
5 10
CONT2 O/I4
6 9
CONT3 O/I3
7 8
VSS I /O3
CD4066BPWR
1 5
2
34
AF_TRUTH
WFM
AGCC
DET
AM
R SSI
TRUTH NOISE
SHIFT +3V
IC16
1 8 DASTB
AO1 LD
2 7 LCK
AO2 CLK
3 6 LDATA FSET
DI
AO3
4 5
SHIFT3V
VCC GND
TUNE
BH2220FV M
CLONE
EAR
SPO
AFE
AFO
CPU3V
TONE ON :3.1V
TONE OFF:0.0V
HVIN
R162
82K
BATTIN
VSCAF
8
R150 R166
C157
7
6
150K 39K 0.1
5
R151
39K
Q27
10K
8
R163 R167 D
7
D
6
0 D
5
D
HAT1023R
CTONE
RTONE
CHG
R251
100
R160
2.2M
R155
180K
C161
C130 C147 R177
BATT Charge
470P 680P 0.01
390K
R156
180K
R161
C155
0.0022
470K R170
2.2M
CHGC
Q23
2SJ144 C148
R178 C162
1 39K
1
R165
1M
CPU3V
HVDET
Q25
UNR9213J
HV 6V:0.0V
HV 3V:3.2V
9
J7
HV 50 1 BAR
49 2
48 3 VP
47 4 PS
46 5
45 6 PSTB2
44 7 PSTB1
43 8 PDATA
42 9 PCK
41 10 VCO4
40 11
VCO3
39 12
VCO2
38 13 VCO1
37 14 R3V
36 15 ATTC
35 16 HFC
34 17 ANTSW
33 18
B2C
32 19
B1C
31 20 ATT
30 21 TRAC
29 22 VHFC
28 23 800MC
27 24 GC
26 25
UHFC
AXK4S50535G
R191
180K
MPZ1608S221A
R193 CP7
EP9
Li+
100K CP10S
C175
0.001
CP10S
Li-
CP8
SB07-03C
1
S D2
2
S M A2S728
0.1
3
D35
S
4 C172
G
CHARGE OFF:3.2V
CHARGE:0.0V
ISET VSS
6 5
PG STA2
7 4
R185 100 CE STAT1
8 3
BAT TMR
9 2
OUT IN
10 1
C185
BQ24064
C171
IC18 0.001
0.47
Q26
UNR9213J
M A2S111
D33
D34
MA8039
*; Refer to "PARTS LIST."