Logic Unit - Icom IC-R3 Service Manual

12-4 LOGIC UNIT

DS1
A0080
1 COM0
COM0
2 COM1
COM1
3 COM2
COM2
4 COM3
COM3
5 SEG0
SEG0
6 SEG1
SEG1
7 SEG2
SEG2
8 SEG3
SEG3
9 SEG4
SEG4
10 SEG5
SEG5
11
SEG6
SEG6
12 SEG7
SEG7
13 SEG8
SEG8
14 SEG9
SEG9
15 SEG10
SEG10
16 SEG11
SEG11
17 SEG12
SEG12
18
SEG13
SEG13
19 SEG14
SEG14
20 SEG15
SEG15
21 SEG16
SEG16
22 SEG17
SEG17 R51
23 SEG18
SEG18 120 k
24 SEG19
SEG19
25 SEG20
SEG20
26 SEG21
SEG21
27 SEG22
SEG22
28 SEG23
C51
SEG23
0.001
SEG12
76
SEG11
77
SEG10
78
SEG9
79
SEG8
80
SEG7
81
SEG6
82
SEG5
83
SEG4
84
SEG3
85
SEG2
86
SEG1
87
SEG0
88
C42
89
R48 0.1
90
100 k
91
COM3
92
COM2
93
R35 COM1
94
10 k COM0
95
96
97
R34
98
47 k
99
100
R33
R969
47 k
47 k
THERMC
R32
47 k
R970
100 k
C261
0.01
C114
0.01
C52 C106 C263
0.001 0.01 0.1
1
COM
2
CKV1
3
CKV2
R49
4
15V
120 k
5
STV
6
XSTV
R50
7
CSV
220 k
8
ENB
9
S2
XENB
10
JPM1990-2013R
PCD
11
B
12
R
13
G
14 S5 S6
VSS
15 MODE V/M
PCG2
16
FUNC
PCG1
17
CSH
18
XSTH R21
19
STH 220 k
20
CKH2
21
CKH1
22
15V R20
23
100 k
24
R19
470 k
S7 S8 S9 S10
UP DN RIGHT LEFT
S4 S1
SQL POWER
KEYS
COMPLETE VIEW
R961
8.2 k
Q43
2SK1829
LVI
5
C39
0.01
1 2 3
KS0
50
KS1
49
EXPSTB
48
PDA
47
PCK
46
R88
PSTB
45
1 M
PGSTB
44
I3
43
ECS
42
ECK
41
EDISO
40
X1
EDOSI
39
IC11
CR-613
38
M38267M8L-256GP
37
36
35 C8
34 10 P
RESET
33
CPUHV
32
LIGHT
31
TVC
30
CONVC
29
POWERC
28
+3SC
27
DCDC_C
26
R100
10 k
SDET
BATV
R965
68 k
AFON
AMUTE
BEEP
CLIN
R966
100 k
CLOUT
COM
15V
R75 R76 R77 R78
150 k 150 k 150 k 150 k
PGSTB
RTONE
R71 R72 R73 R74
15 k 15 k 15 k 15 k
D6 D7 D8 D9
MA2S111 MA2S111 MA2S111 MA2S111
B3 B2 B1 B0
AM9K RXF1 RXF0
KSQL
POWER D10 D11 D13
MA2S111 MA2S111 MA2S111
12 - 4
R960
10 k
R963
R962
5.6 k
6.8 k
R964
10 k
LVC
IC5
S-80925ALMP-DAN
4
3V(CPU3V)
C24
IC2
10
R86
Q40 AK93C10A
47 k
DTA144EE
ECS
8 1
ECK
7 2
EDISO
6 3
EDOSI
5 4
C40
0.001
D2
R85 MA2S111 Q39
100 k
XP1501 AB
R87
C110
47 k
47
R3
C9
10 k
10 P LAMP ON: 3.0 V
LAMPS
LAMP ON: 2.3 V
C258 C7
Q38
22 0.001
2SC4081 S
R5 R10
R172
68 68
10 k
DS2
DS3
CL-200YGC-TS
CL-200YGC-TS
D1
MA2S111
R37
Q11
470
UN9214
R26
33 k
TCON R186
100 k
PCK
Q8
PSTB
DTA144EE
TCON
I3
RTONE
R12
100 k
R90
1 M
C3
R14
R92
0.1
KS0 120 k
C1
470 k
100 P
C44
0.1 R38
1 M
C13
0.1
1 8
2 7
R41 R40
3 6
82 k 82 k
4 5
KS1
R42
C43
IC9
82 k
0.001
NJM2904V
R39
C14
R91 C12
470 k
0.0015
470 k 0.039
O
EX
G
R977
R974 47 k D903
4.7 k MA2S111 IC10
XC6371A351PR
Q908
DC-DC CONV
UN9214
IC3
XC62FP3002MR
O I
C15 C41
G
47 0.1
C5 C35
0.001 0.001
C251
C304
0.001
5 6 15
VIN
Q6
2SA1362 GR
VCC
R102
1 2 3
100 k
Q4
2SA1588 GR
Q5
C4
XP1501AB
22
R8
5 6
470
D14
0.1 V
MA2S111
1 2 3
R4
10 k
R255
470
C10
22
+3SC
R3V
VIN
15V
15V
+3V
R3V
BEEP
VCC
Q23
C88
2SB1132 R
22
Q41
XP1501 AB
5 4
1 2 3
R114
4.7 k
C89
10
C118
R104
0.47
470
IC15
TA31056F
8 1
VCC IN
7 2
TB VREF
Q44
6 3
OUT NF
2SA1588 GR 5 4
GND COMP
C79
100 P
C61 C117
220 0.1
C54
4.7
C11
0.1
CLONE
C36 C48 C19 C20 C21 R256
Q26
1 1 1 1 1 4.7 k
2SC4081 S
18.8 V
D4
MA729
C119
D3 D15 D5 D19 D20
R82
C33
47
1SS372 1SS372 1SS372 1SS372 1SS372
47 k
1
C120
1
C94 C17 C22 C23
1 1 1 1
C6
L1
1
CD54-101KC
C98 C116
22 0.1
3.1 V 4.1 V
VCC
Q303
2SB1132 R W5
C303
R306
47
VCC
10 k
3.4 V
Q304
2.5 V 2SC4617 Q
D301
R7
C16
R103 MA2S111
100
3.3 V
0.001
180 k
Q820
CFL ON: 3.3 V
2SB1201 S
Q821
CFL ON: 3.1 V
2SC4081 S
CFL ON: 3.0 V R820
10 k
D820
MA2S111 R822
R826
C803 22 k
0.15
47
C821
R821
C820 0.001
1 k
47
T2
CP3 6 5
7 4
4 3 4
8 3 C801
IC903
CP4 9 2 0.0033
2 C802
10 1 TC7S02FU
0.001
5 1
Q801
R801
2SK2493
10 k
Q802
UMY1N TR
R3V
1.5 V
R139
C84
100
0.1 IC14
3.1 V M5222FP
R157
120 k 1 8
OUT1 VCC
2 7
IN1 OUT2
Q36
3 6
COM IN2
C85 2SC4081 S 4 5
GND VC
C80
0.1
0.9 V
0.1
R156
33 k
R138
5.6 k
R165
R161
C87 15 k
8.2 k
1
R113
R159 R112
C90
C78 82 k
33 k 33 k
0.0047
0.047
C58 C97 C91
0.1 0.1 0.1
C53
4.7
Q37
2SJ144 Y
3.0 V
R137
C82
47 k
0.1
AMUTE
FMAF
VRC
C18
3.3
5
3
R166
220 k
R164
10 k
1.
R108
1 M