Voltage Diagram; Logic Unit - Icom IC-R5 Service Manual

SECTION 11

VOLTAGE DIAGRAM

• LOGIC UNIT

DS1
TTR5169
CONT1
CONT0
+3CPU +3CPU
SEG18
109
SEG18/P102
SEG17 110
SEG17/P101
SEG16 111
SEG16/P100
SEG15 112
SEG15
SEG14 113
SEG14
SEG13 114
SEG13
SEG12 115
SEG12
SEG11 116
SEG11
SEG10 117
SEG10
SEG9
118
SEG9
SEG8 119
SEG8
SEG7 120
SEG7
SEG6 121
SEG6
SEG5 122
SEG5
SEG4 123 SEG4
SEG3 124
SEG3
SEG2 125 IC1
SEG2
SEG1 126
M30220FCRP(RX-2605EXP)
SEG1
R2 R3 127
SEG0
SEG0
68 k 120 k
COM3 128
COM3
COM2 129
COM2
COM1 130
COM1
COM0 131
COM0
132
C2
133 C1
R1
134
R4
10 k VL3
47 k 135
VL2
136
VL1
137
R5
VSS
47 k VRC R7 1 k 138
P132/DA2
FSET 139 P131/DA1
R6
140
R8 1 k
47 k AVSS
TRAC 141
P130/ADTRG/DAO
R9 1 k 142
C1
VREF
0.001 143
C3 AVCC
144 P97/AN7
0.001
C2
0.1
C28
C4 0.001
0.001
C5 0.001
C6 0.001
C7 0.001
C8 0.001
C9 0.001 R61
C10 0.001 10 k
W1
C11 0.001
+3CPU
W17
S6 EP1
DUD
UP
E
DCK
DN X1
EP2 CSTCR6M75G53
6.75MHz
SCLK
+3V
3.22 V
R52
120 k
S1
K1
K2
R49
S2
150 k C102
C105
0.001
0.001
R50
S3
R110
330 k
IC100 10
C34
TC7W04FU
0.001
3.11 V 5.71 V
C103 1 C106 1
1 8
2 7
R53
3 6
120 k
4 5
S4
R51 D100 D101
S5
330 k 1SS372 1SS372
C100 C101 1 C104 1 C107 1
C35 68 P
0.001
4.62 V 7.23 V
VRC
C46
0.001
S8
S7
C49
C47
0.001
0.001
C48
0.001 S10
S9
FUNC SQL
EAR
CLONE
J2
to external
speaker HSJ1501-011010
W2 W4 W6
W3 W5 W7
+3CPU
72
P15/KI5
71
P16/KI6
70
P17/KI7
69 R24 100
P20/KI8
68 R25 100
P21/KI9
67 R26 1 k
P22/KI10
66 R27 1 k
P23/KI11
65 R28 1 k
P24/KI12
64 R29 1 k
P25/KI13
63
R30 1 k
P26/KI14
62 R31 1 k
P27/KI15
61 R32 1 k
P30/KI16
60 R33 1 k
P31/KI17
59 R34 1 k
P32/KI18
58 R35 1 k
P33/KI19
57
P34
56
P35
55 R36 1 k
P40/TA0OUT
54
R37 1 k
P41/TA0IN
53 R38 100
P42/TA1OUT
52 R39 100
P43/TA1IN
51 R40 1 k
P44/TA2OUT
50 R41 1 k
P45/TA2IN
49 R42 1 k
P46/TA3OUT/INT4
48
R43 1 k
P47/TA3IN/INT4
47 R44 1 k
P50/TB0IN
46 R45 1 k
P51/TB1IN
45 R46 1 k
P52/TB2IN
44 R47 1 k
P53/TB3IN
43 R48 1 k
P54/TB4IN
42
P55/TB5IN
41
P56/INT3
40
P57/CKOUT
39
P60/CTS0/RTS0
38
P61/CLK0
37
P62/RXD0
BUSY
SCLK
RXD
W10
TXD
R21 1 k
R22 1 k
R17 R23 1 k
47 k
RESET
D1 MA2S111
2.96 V
R20
15 k
C12 R19
3.17 V
18 P 47 k
CLONE
Q2 DTC144TE
Q1
C13 CLOUT
0.001
DTC144EE 2.75 V
CLK SHIFT
ON: 3.22 V
OFF: 0.0 V
AF
ON: 2.34 V
OFF: 2.53 V
R65
10 k
+
C453
Q100
33
8.31 V 10.91 V 13.51 V 12.86 V
2SC4081S
Q451 2SB1132 R
C108 1 C110 1 C113 1
R450 Q450
4.7 k
C115 XP1501 AB
Q452 2SA1588 GR
0.22
R100
82 k + C451
R451 +
13.35 V
3.3
470
+ C450
AF
D102 D103
C114 0.47
W16 ON: 2.99 V
1SS372 1SS372
2.2
OFF: 0.35 V
AF C454
+
C109 1 ON: 2.91 V 0.1
OFF: 0.0 V
C452
EP10
AF
9.81 V 12.37 V 220
ON: 1.52 V
OFF: 0.65 V
EAR EAR
AMUTE
CLONE
EP9
EP11
C51
NOTE
0.001
EAR
C : while charging the battery
CLONE
F : while receiving FM mode
+3CPU
LIGHT 2.99 V
ON: 3.13 V
OFF: 0.0 V
C45
LIGHT
0.1
Q5
2SC4081 S
R64
10 k LIGHT
R59 ON: 2.46 V
56 OFF: 0.3 V
EP3
external power
R58
supply
47 k
LIGHT 4.06 V
AFON
D3
0.0 V
R57
GC
MA8027 H
HVDET 4.7 k
300MC
800MC
2.94 V Q4 DTC144EE
D2 MA2S111
+3S
B1C
+3V
HFC
SHIFT
Q102 2SA1588 GR
ATT
3.19 V
C116
DBL1
0.1 R101
DBL2
C120 3.17 V
3.3 k
B2C 0.001
3.22 V
2.51 V
1.97 V
BEEP Q101
B3C R102
XP6501 AB
6.8 k
+3SC
Q103
R105
PCON
2SA1588 GR 3.21 V
33k
1.36 V
VHFC
AMUTE
+
R107
TCON
R103 C118
47 k
CHGC
2.2 k 4.7
NOISE R104
+3SC C121 C126
47 k
AM
0.001 0.001
WFM
R106
ANTSW
4.7 K 2.51 V
PCON
UHFC
0 V
R109
C123
47 k
0.001
2.50 V
3.14 V
R108
4.7 k
3.22 V
R56
10 k 3.22 V
RESET
C40
HVDET IC3
0.001
PCK
R3112N281A
PSTB
PDAUL
VCC
C43
VIN
0.01
R3V
ESIO
3.22 V
ECK
IC2 CAT24WC256K1.8
1 A0 8
VCC
2 A1 7 R54
WP
3 NC 6 47 k
SCL
4 VSS 5
SDA
R55 RTONE
10 k
+3V
TCON TCON
VIN
RTONE
RSSI
RSSI
CTONE CTONE
AMUTE
AFON
VP
BEEP BEEP
VCC VCC
3.0 V
3.12 V
C400
1.50 V C404
0.1
0.1
R300
IC400 M522FP 10
R408
Q400 2SC4081 S 1 8
220 k
OUT1 VCC R407 C406
2 IN1 7
IC450 TA31056F C455 R402
0.94 V OUT2 15 k 0.0047
0.1 120 k 3 6
8 1 R401 COM IN2
R301
VCC IN 4 GND 5
7 TB 2 33 k VC
202 k
VREF R409
6 OUT 3
NF R404 C405 10 k
R400
5 GND 4
8.2 k 0 V
COMP 5.6 k 0.1
AF + +
C352
ON: 2.3 V C456 R303
R406
C401 Q350 0.1
OFF: 0.6 V 100 P 180 k
82 k
1
R403 R405 2SJ144 Y
C457 C458
33 k 33 k SQL R351
VRC 4.7 4.7
ON: 3.22 V
1 M
OFF: 0.0 V
C402 C403
0.1 0.1 C351 0.33 V
R350
0.1
47 k
R302
AMUTE Q300 390
2SC4081S
EAR
W: 0.93 V
C53
82 P
A : while receiving AM mode
W: while receiving WFM mode
EAR
VCC
HV
+3S
+3V
IC103
3.41 V
R1111N321B
5 VOUT 1
VDD 2
+ GND 3 R111
4 NC
CE 10 +
C130
C128
IC104 22
47
3.5 V
R1111N321B
5 VOUT 1
VDD
2
GND
+ 4 NC
3
CE +
C133
C134 22
10
3.19 V C136
Q105
0.001
DTA144EE
3.21 V
Q104
2SA1588 GR
IC102 L100
D105
CDRH5D28-101NC
XC6371A351PR
RB551V-30
C127 3 VCC
EXT
0.001
2
VOUT + +
C135
1 C132
VSS
+ 33
C129 C131 0.001
22 33
R62
100 k
3.13 V
VCC
VIN
0.97 V R3V
Q200
3.07 V
C200
DTA144EE
0.001 TCON
R202 68 k
C208
R203
0.06 V
0.022
1 M
C203 R204
220 68 k
R200
1 M
C204
1.01 V
0.001 R208
C207 1 M
1 8 C210
0.022
2 7 1
R206 R207
0.95 V 3 6
82 k 82 k
4 5
R205 82 k
IC200 R209
C202
0.97 V C209
R201 407 k
0.1 NTM2904V
0.01
470 k
C205
0.0015
3.12 V
Q303 F: 3.21 V
A: 0.17 V
A: 3.11 V DTA144EE
C301
0.1
C313
W: 2.4 V 3.11 V
0.1
R315 R324
180 k 100 k C315 R322
C317
C305
56 k
0.1 0.1
1 C309
0.0022
1.26 V C320 R319
Q301 R321
0.1 470 k
R310 10 k
D301
XP6501 AB
R308 120 k
MA132WK
18 k C311
W: 1.85 V
W: 2.97 V R318 R323 C318
0.0068
C303 D300 82 k 39 k 0.1
0.1 MA2S111 C307
C310
0.0047
0.0068
C306 R314
R317
R305 C316
0.1 180 k
W: 2.42 V
82 k 470 k 0.018
R304
180 k R306 R309
R311
15 k 18 k
47 k
R325
100 k
C322
R307
0.1
10 k
Q302
C304 F: 0.0 V
R320 C319
0.1 W: 0.0 V W: 0.0 V
2SJ144 Y
39 k 0.1
C308
C312
0.1
0.1 C314
R313
R316 0.018
C321
1 M
4.7 k
0.1 R312
F: 3.16 V
47 k
W: 0.18 V
11 - 1
J3
AXK5S40340P
ANTSW 1
40
2
39
3
DBL2 DBL2 38
4
DBL1 DBL1 37
B2C 5
ATT
ATT 36
B3C 6
SHIFT SHIFT 35
TRAC 7
HFC HFC 34
VHFC 8
B1C B1C 33
VCC
UHFC 9
32
From/to
10 RF unit J1
+3S +3S 31
11
VP VP 30
800MC 12
PDAUL PDAUL 29
300MC 13
PCK
PCK 28
GC 14
PSTB PSTB 27
15
26
FMDET FMDET 16
+3V +3V 25
RSSI RSSI 17
FSET FSET 24
HV
NOISE 18
R3V R3V 23
+3S
EAR EAR 19
+3V AMDET 22
AM 20
WFM WFM 21
C17 C18
0.001 0.001
HV
VCC
2.98 V
VIN
R63
180 k
C504
0.001
Q500
HAT1023R D502 J500
RB551V-30 EP12 04-730A1-02BKA
8 D 1
S to AC
7 D 2
adapter
S D501
6 D 3 C505
S MA2S728
5 D 4 0.0047
G
R500
C501 C503
100 k
0.001 0.001
C: 2.86 V
R3V
R502
D500
EP13
SB07-03C 3.9
C: 5.45 V
C500
Q501
0.001
C: 4.79 V
2SB1132 R
R501
C: 0.03 V D503
10 k MA133
C: 3.16 V
Q502
DTC144EE
CHGC
CTONE
AM
WFM
EAR