Icom IC-80AD Service Manual page 45

SECTION 10. VOLTAGE DIAGRAM
LOGIC UNIT (1/2)
SEG10
S33 S16
SEG27 33 16
SEG9
S34 S15
SEG28 34 15 SEG8
S35 S14
SEG29 35 14 SEG7
S36 S13
SEG30 36 13 SEG6
S37 P12/S12
SEG31 37 12 SEG5
S38 P11/S11
SEG32 38 11 SEG4
S39 P10/S10
SEG33 39 10 SEG3
S40 P9/S9
SEG34 40 9 SEG2
S41 P8/S8
SEG35 LC75827W
41 8 SEG1
S42 P7/S7
SEG36 IC603
42 7
S43 P6/S6
SEG37
43 6
S44 P5/S5
SEG38
44 5
S45 P4/S4
SEG39 45 4
S46 P3/S3
SEG40 46 3
CONT1
S47 P2/S2
SEG41 47 2
CONT0
S48 P1/S1
SEG42 48 1
LDI
LCL
LCE
LINH
R621
CONT1
R620
C606
10K
68K
0.001
CONT0 R619
R616 R615
47K
R622 39K
120K
47K
C607 C610
R617
C608
0.1 0.1
47K
0.1 C609
0.1
R624
0
R618
47K
+3V
R11
I OSTB
I OSTB1
12K
R26 100 I OEN
C2 D ASTB1
0.1 D13 PLLSTB
10
MA2S077G0 DATA
C15 R9
CK
X1
27P
RESET
R14
C16
0.1 12K CR-864 UNLK
R10
1M
C14
C13
12P
18P
RX232
TX232
R68
10K
PPS
D50
R70
CLONE
18K
Q53 MA2S7280G
2SA1832
Q50
2SC4738
R71
47K
R69
12K
R50
1k
D51
MA2S1110G
IC 3
1 6
1A 1Y
J2 2 5
GND VCC
SEG1 3 4
1 2A 2Y
SEG2
2
SEG3 SN74LVC2GU04DCKR
3
SEG4
4
SEG5
5
SEG6 R52 R51
6
SEG7 100K 100K
7
SEG8
8
SEG9
9
SEG10
10
SEG11
C50
11
SEG12 0.1
12
SEG13
13
SEG14
14
SEG15
15
SEG16
16
SEG17
17
SEG18
18
SEG19
19
SEG20
20
SEG21
21
SEG22
22
SEG23
23
SEG24
24
SEG25
25
SEG26
26
SEG27
27
SEG28
28
SEG29
29
SEG30
30
SEG31
31
SEG32
32
SEG33
33
SEG34
34
SEG35
35
SEG36
36
SEG37
37
SEG38
38
SEG39
39
SEG40
40
SEG41
41
SEG42
42
SEG43
43
SEG44
44
COM4
45
COM3
46
COM2
47
COM1
48
CPU3V
C3
0.1 C32
47
KS0
KS1 61
KS2 62
KS3 63
I0 64
I1 65
I2 66
I3 67
68
69
70
71
72
73
74
IC 1
75
76
HD64F2364VTE
77
78
79
80
81
82
83
84
85
86
87
CLSFT 88
89
90
R4
180
C1
0.1
C4
0.1
CLIN
CLOUT
R21
4.7k
S3
S2 S4
MENU
S5 S6 S7 S8 S9
1 2 3 * VFO
D1
MA6S121
S10
S11 S12 S13 S14
4
5 6 0 MR
S15 S16 S17 S18 S19
CALL
7 8 9 #
10 - 1
J1
1
3
SHORTLAND 5
CP502 7
9
11
13
15
R22
0
C33
0.1
3.31V S-812C33AUA
O
C102
C103
10 0.1
W DTOVF
R12
C12 10
R20
0.1
4.7K
R100
100K
1
2
3
R28
0
30
29 TXCK PCON
28 RXCK
27 BTDET 0.001
C52
26
R54
25
R53
4.7K
24 47K
23
22
DASTB2 ECK
21
PTT ESIO
20
19 DVC
18
17 AMBEC
16 TXDT
15 RXDT
14 DCEL
13 ACQ
12 MIC2
11 MIC1
10 BATT TEMP
9
8
AFON
7
MICC
6
MUTE
5 AFMUTE
4 PCON
3
2 MD2
1
R16
12K
R55
47K
R1
TTEMP CPUHV
TX-V
RSSI C53
CTONE 0.001
R2
1k RTONE
TEMP
VI N
0.001
0.001 0.001 C11
1k C10 C7 LLIGHT
C5 C6 C8 0.1
C9
47K
BTDET
0.001
R8
C58
0.001 0.001
0.001
Q52
2SD2216GS
S1
POWER
CHGH
KR4
KR3
KR2
KR1
KR0
I3
I2
I0
CHGC
KS3
KS2 TXLED
M A132WK
MA2S1110G
D6
BLED
D4
KS1
MA2S1110G
D2
KLIGHT
KS0
MMZ1005Y102CT
IC52 MAX3221IPWR
EP50
16 1 0.22
FORCEOFF EN
15 2 C60
VCC C1+
14 3 C61
C57
GND V+
0.1 13 4 0.22
COUT C1-
12 5 C62
FORCEON C2+
11 6 0.22
2 DIN C2-
10 7 C63
4 INVALID V-
9 8 0.22
R63
6 ROUT RIN
100
8
1 0
MMZ1005Y102CT
12
14
16
6.80V MA2SD100G
RSQ035P03TR
D100 Q101
IC100
L101
6 1
100U
5 2
D102
I C123
0.56
RB161VA
G R102 0.001
4 3 IC102
C100 1 8
R101 EXT VSS
0.1
2 7
LSEN VOUT/FB
3 6 C119 22P
VIN CC/GAIN
0.56 4 5
CE/SS CLK
C110
C108
XC9201D09AKRN 220P
1
IC101 C109
C118
5 22 R107
0.1
OUT CD R105
15K
10K
VDD
4
VSS NC
C101
S-80929CNMC
0.027
R110
47K
IC51
R113
8 1
VCC A0
7 2
0.01
WP A1
6 3 C121
SCL A2
5 4 5
SDA VSS VCC+
Q102
24LC512T 4
OU T
R108
UNR9113G0 0 IC104
LMV331IDCK R
Q103
UNR9213G0
R66
NTCG10
R67 R136
IC103
47K 22 C114 C113
1 5
VIN VOUT
2
VSS
C116
3 4
C117
1 CE NC 1
0.001
XC6204B332M
0.001
MMZ1005Y102CT D125 MMZ1005Y102CT
L100
EP101 RB551V EP100
100U IC125
C106
C104
3 LX 22 22
C105
22
22 2 VOUT C107
DC13.5V:0.07V
VSS
DC7.4V:3.29V 1
XC6371A551PR
R56
2SD2216GS
1k
MA2S1110G
Q51
C54 R58 D53 D54
0.001
10K
MAZ8082GM
C222
C55
R57 C56
0.001 0.001
47K
0.001
R218
C221
1k
0.001
C150
R152
0.001
R151
R153 12
R150
15
12 12
R60 11.91V
100K
Q150 11.89V
11.29V
3.24V 0.38V 1k 2SA1588
UNR9213G0
R154
2SB1201
Q151
Q152
11.26V 3.29V
C151
0.001
CHG ON:
D150 Q153 8.33V
MA13 3 XP1501
CHG ON:
3.31V
D151
R155 R156
1k
2.7k
R161 SB07-03C
C152
10K
0.001 R157
CHG ON:3.24V
2.2K
R158
33 0
D200 R203
Q200 330
MA2S1110G
C214 UNR9213G0
0.001
R204
C216
330
DS201
0.001
CL-165HR
Q 201
C215
UNR9213G0
1.84V
0.001
UNR911HG0
Q202
C217
C219
0.001
0.001
MMZ1005Y102CT
R62 EP51
J50
100
EP52
C68
C67
10P EP53
10P
MMZ1005Y102CT
A
MMZ1005Y102CT
EP102
C124 C111
68
C120
0.1
R115 150P
100K
C112
4.7
R116
22K
PCON
C115
0.001
2.2M
R114
1.5M
1 1M
IN+
2 R117
GND
3
IN -
R111
2.2M
R112
330K
D103
MA2S7280G
C420
33
R219
10
22
C223
R217
10K
2SA1832
Q203
C220
R214 R213
R215
0.001
33 33 33
VFY1111C
DS210 DS212
VFY1111C
DS211
VFY1111C
VFY1111C
DS202
R205
270
R206
DS203
VFY1111C
220
R207
DS204
VFY1111C
330
R208
DS205
VFY1111C
270
R209
DS206
VFY1111C
270
R210
DS207
VFY1111C
330
R211
DS208
VFY1111C
330
R212
DS209
VFY1111C
330
LIGHT ON:2.57V
LIGHT OFF:0.60V
*; Refer to "PARTS LIST."