Voltage Diagram; Logic Unit - Icom IC-R2 Service Manual

SECTION 11

VOLTAGE DIAGRAM

• LOGIC UNIT

DS8 DLC-7995
3.01
MODE: 0
BAND: 1.572
V/H: 2.31
R51
120 k
K2 S4
C51
MODE
0.001
R50
S6
120 k
SEG19
76
BAND
SEG20
77
R49
SEG21
S5
330 k 78
SEG22
79
V/M
SEG23
80
SEG24
C42
81
0.1 SEG25
82
SEG26
R48 83
S2 SEG27
K1 120 k
84
SEG28
UP 85
SEG29
R18 86
S3 SEG30
220 k
87
SEG31
DN 88
89
C52
90
0.001
91
COM3
92
COM2
93
COM1
R35
UP: 0
94
10 k COM0
DN: 2.04
95
96
R34 97
C106
47 k
98
0.1
99
R33 100
C114
47 k
S9
0.1
TP90N00E20-16F-1995
R32
UP
47 k
E
DN
DUD
DCK
KTS
S1
POWER
POWER
S7
3
4
D1
5 2 MA2S111
6 1
S10 R37 R23
KFUNC
470 15 k
JPM1990-2013R
Q11 XP4213
Q40
2SA1588 GR
R185 R79 R25
R78
3.3 k
100 k 100 k 100 k
2.34
R77
100 k
R86 100 k
ECS
IC2
X25650S8I-2.5
R52
R24
1 8
CS VCC 15 k
15 k
2 7
SO HOLD
3 6
WP SCK
4 5
VSS SI
KSO
D6 D8 D9
D7
MA2S111 MA2S111 MA2S111 MA2S111
D10 MA2S111
D13 MA2S111
KS1
J2
HSJ1594-010050
W2
W3
W5
IC1
SP1 HD74LV00
C57
0.001
SDET
R184
1 k
SHIFT
C108
0.001
300MC
50
49
DBL2
48
PDAUL
47
PSTB
46
I1
45
I2
44
ECK_I3
43
PCK_IS
42
41
ECS
40
IC11
EDA
39
M38267M8L-218GP [USA] only X1
38
CR-613
M38267M8L-222GP other 37
36
C8
35
10 P
C9
34
RESET 10 P
33
KSQL
32
B1
31
B2
30
B3
29
POWERC
28
+3SC
27
LIGHT
26
R100
10 k 3.13
R26
33 k
TCON
PSTB
I1
I2
Q8
ECK_I3
DTA144EE
PCK_IS
ECS
R12 100K
EDA
SDET
R92 R14 C3
C1
120 k 0.1
100 P 470 k
C44
R90
0.1
1 M IC9
R38
NJM2904V
1 M
C13
1 8
0.1
R40
2 7
C11
82 k
R41
3 6
0.1
82 k
5
4
R42
R39
82 k
C43 C14
C12
470 k
R91
0.001 0.0015 0.039
470 k
R114
4.7 k
Q35
2SA1588 GR
+
R181
C101
0.001 12 k
C118
0.47
R180
R179
470 k
220
R3V
R182
C102
100 k C103 C100
R183
100 P
0.1 0.1
10 k
LIGHT ON: 2.82
C41
0.1
R172
R94
10 k
Q38 R5
10 k
10
2SC4081 S
LAMPS
LIGHT
DS2
S8 CL-200YG-C-TS
JPM1990-2013R
KSQL 3.2
Q3
1.94
2SA1588 GR
3.16
2.84
Q4 R174 Q6
3.3 k R8
2SA1588 GR 2SA1588 GR
6 5 4 33 k
Q39
R175
R3
XP6501 AB 2.54
5.6 k
47 k
C123
0.1 1 2 3
C37
R1 R67
+ 0.001
4.7 k R173 R9 R68
47 k
2.49 +
2.2 k 1.89
1.34 47 k 4.7 k
C4
33
C96
IC5
4.7
+3V
S-80725SL-AN
POWERC
+3SC Q13
C39
DTC114EE
0.1
RESET
0
R87
D14
220 k R89
MA2S111
100 k
C40
R88
0.001
1 M
R186
100 k
BEEP
+3S
IC14
Q36
1
M5222FP 8
VCC
2SC4081 S OUT1 R128
2 7
10
IN1 OUT2 C80
3 6
0.1
COM IN2
4 5
GND VC
1.51
R156 R157
33 k
120 k
0.94 R165
R138
15 k R166
5.6 k
R161
220 k
R113
C87 8.2 k
+
82 k
C60 1
R159 R112
47 C90
R164
33 k 33 k
C91
0.0047
10 k
0.1
C58 C97
Q23
0.1
0.1
2SA1588 GR
Q37 C92
0.1
Q24
2SJ144 Y
2SA1588 GR C78
0.047
MUE: 3.0
8
1
R108
VCC IN
AF ON: 2.34
7 2
1 M
TB VREF
C82
6 3
Q41
OUT NF
0.1
5 4
GND COMP + +
2SC4617 S R137
47 k
R150
AF ON: 0.663
IC15 820
C89
C79 C88
TA31056F
4.7 4.7
100 P
+
C61
C53
220
0.1
B3
B2
BATRY
+3V
R3V
+3S
Q26
3.01
13.69
2SC4081 S
VP
IC3
C35
XC62FP3002MR
0.001 R82
C33
13.03
47 k
1
0 I
C15
13.57
G
47
+ +
C5
C36 C48 +
C19
0.001 C18
1
1 1
C24
3.3
10
C119
1
0 I
G
3.21
IC4
C120
S-81332HG-KC D3 D15
1 D5
1SS372
1SS372 1SS372
C121 C6
3.0
1
1
C94 C17 L1
IC10
1 1 CD54-101KC
BATRY
XC6371A351PR
1 2 3.52
C98 C16
EX O
0.001
G 33
D4
C116
MA729
3 0.1
DC-DC CONV
R103
100 k
BATT
R102
100 k
AM: 0
BATRY NFM: 3.01
Q18
DTA144EE
C63
0.1 2.39 R127
R126
18 k 18 k
C71
3.12 0.0022 AM: 1.44 R119
C67
180 k
2.97 0.1
AM: 1.1
C86 6 5 4
R149 Q30 R123
NFM: 1.06
1
2.2 k 120 k D16
R117
XP6501 AB
MA132WK 470 k
C70
0.0047 R120
1.83
R133 180 k
1 2 3
180 k
C81 D17 C73 R129 C69
C72
MA2S111 0.0047 R118
0.1 0.1 47 k
0.0047
15 k
R122
R121 C68
0.93
180 k
0.018
470 k
R141 R124
R140 Q17
10 k
180 k
180 k
2SJ144 Y NFM: 1.37
R125 15 k
Q31
R130
2.42 C77 C76 R132
2SC4081 S C93
0.1 0.1 10 k 15 k
0.018
WFM: 0
R153 R109
1 M
47 k
AM,NFM: 1.31
WFM: 0
AM,NFM: 1.67
OTHERS: 3.01
11 - 1
AM
C107
0.22
J1
AXK5S40340P
AM
R116 C65
47 k 0.1
AMS
R136
22 k
WFMS
C66
0.1
C74
0.1
WFM