Icom IC-M506 Service Manual page 40

SECTION 10 VOLTAGE DIAGRAM
• LOGIC UNIT
CP31
L3V
J11
HV
1
L3V
2
BOOT
3
TX
4
AISRXD
5
GND
6
7
J10
1
NJRST IC15
2
JTDI 5 1
3
JTMS 2 AISRXDI
4
JTCK 4 3
5
JTDO
6
SN74AHC1G125DCK
NRST
7
8
JTMS
JTCK
JTDI
NM1TXD
J9 NM1RXD
VGI COM1TXD
22
VX0O C23 DB2
21
VO0
DB3
20
VM COM1RXD
19
VSS 1 DTEST
18
VD1
17
VDD
16
CSB RSTB
15
RSTB CSB
14
RD R13
13
DB7 RPLAYSO
12
DB6 RNCPASSO
11
RRECSO
DB5
10
DB4 AISCO
9
DB3
8
DB2 R14
7
DB1 MNCOUTSO
6
DB0 MNCPASSO
5
WR NCPDNBO
4
CMICAFSO
A0
3
K JTDO
2
NJRST
1
NRST R12
NCRESETBO
UNLKI
R71
Q1
2SB1201
R41
LEDV VCC
27
Q2
L2SC4081
R42
D1
220k
DZ2J091M
UP
CP44
L3V
S1 S2 S3 S4 S9
CP45
SQLV
KEY-D7 KEY-D7 KEY-D7 KEY-D7 KEY-D7 ENT
GND
LEFT RIGHT
S10 S11 S12
KEY-D7 KEY-D7 KEY-D7
DOWN
S5 S6 S7 S8
S13
KEY-D7 KEY-D7 KEY-D7 KEY-D7
KEY-D7
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L3V
109
110
111
112
113
114
115
116
117
118
RD
WR 119
120
121
1k 122
RPLAYS 123
124
IC1
125
RNCPASS
RRECS 126 STM32F101ZGT6
AISC 127
1k 128
MNCOUTS 129
130
MNCPASS
NCPDNB 131
132
CMICAFS
133
134
135
100k
CF20 DIMM 136
137
CP15 BE
BOOT 138
R15 NCRESETB 139
UNLK 140
141
142
100 143
144
10k
R72
10k
CP17
SCCK
CP18 SCDATA
CP19 SCSTB
CP20
CP21
R17 R18
100 100
C44
24P
VCC
CP41
CP47
L3V DIALA
CP48
CP42
VOLV DIALB
CP49
CP46 CP43
GND PWSW
CP50
GND
1 1 . 8 V
*C179
*IC13
*C174 C64
14 1 WXDEC DSCDECO
CAP V+
13 2
ATISDEC
CAP IN 0.01
12 3
R LOCK
11 4
LOOP GND
10 5
REF Q
9 6
NC Q
8 7
FSK DATA
*R167
ATISIN DSCIN
ATIS DECODE
10-1
L3V
toNMEA2K
J8
5V
1 2
3 4
R4 AISRXDI
5 6
100 R5 GPSRXD
7 8
1k NM1RXD
9 10
11 12
13 14
NM2KRST
72
71
70 R22
69 100k
68
PASTBY R23
67 IOOE
66
IOSTB
65 PLSTB
64 DASTB
63
62 1k
61
60 DB6
59 DB5
58 DB4 R24
57
56
55 PTTIN
R25
54
53
1k
52
51
50
49
48
47
46
BATTV
45
44
43
42 VER
41
40
39
R27
38
37
27k
3 . 3 V
IC11
R122
VOUT MR
4 3
VSS
C71 10
2
VDD CD
5 1
0.068
NJU7704F3
R124
R76
J4
10
KEYM
47k 1
PTT
2
GND
3 R125
MICG
4
MIC 0
5
GND
6 MMZ1005S601CT
7
C69
IC12
8
1 14
V+ CAP 0.033
2 13
IN CAP
3 12
LOCK R
4 11
GND LOOP
5 10
Q REF
6 9
Q NC
7 8
DATA FSK
NJM2211M
R67
DSC DECODE
100k
5 . 0 V
1 1 . 9 V
VCC
L3V VCC
NM2KTXD EVDATAO
NM2KRXD MIC-G
MIC-IN
NM2KOPTI PONO
COMRXD
COMTXD
ICF3
PTTCI
CMICAFSO
SCCKO
SCDATAO
SCSTBO
SCRMOPTI
NCRESETBO
IOSTBO
ICF3
PASTBYO
IOSTBO
PLSTBO
DASTBO HORNO
RXSPMO
DB7 SCKO
DB6 SDATAO
DB5 REXTMO
DB4 RINTMO
100 TDETV
T5VSO
PONO UNLKI
PTTINI
LEFT
UP TEMPV
ENT
RIGHT
CLSIF
LVTX
MRSSIV
NOISEV
KEYV
BEEP CP4
DSCOUT
IC2
1
2
3
4
LMV358IPW
R30 VCC
220k
L3V
IC4
1 5
CTRL VIN
2
GND
3 4
NC VOUT
NJM2830U1
COM1TXD
CLONETXC
CMDPWSW
CLONERXC
IC17
5
IC6
1 5 4
L3V 2
3 4
SN74AHCT1G32DCKR
KEYV SN74AHCT1G04DCKR
NM1RXD
IC8
5 1
PTTINI 2
COM1RXD 4 3
TC7S08FU
R111
MIC-G
EP13 MIC-IN
1k
EP14
SP+
MPZ1608S101A
EP15
SP- IC10
1 8
MPZ1608S101A RO VCC
2 7
RE B/Z
3 6
DE A/Y
NM1TXD 4 5
DI GND
ISL81487IBZ
*: Refer to the PARTS LIST for the value and name of component.
CP1
SP-
CP2
SP+
T x : 0 . 0 V
R x : 5 . 7 V
J1
SP+ SP+
40 39
SP- SP-
38 37
HV
36 35
34 33
1 2 . 0 V
32 31
BEEPO
30 29
PAINMO
28 27
PASTBYO
26 25
AFINMO
24 23
EVCKO
22 21
NCSCK
20 19
NCSDATA
18 17
RPLAYSO
16 15
RNCPASSO
14 13
RRECSO
12 11
NCSYSRDYI
10 9
T5VSO
8 7
NCPDNBO
6 5
TXMSO
4 3
2 1
J2
MNCPASSO
30 29
MNCOUTSO
28 27
26 25
24 23
NC1
22 21
20 19
18 17
AISRXDI
16 15
DSCDEC
14 13
WXDEC
12
11
RVSO
10 9
AISCO
8 7
6 5
MRSSIV
4 3
2 1
2 . 2 5 V a t 2 5 º C
L3V
R85
100
8
7
CP3
6 IC3
5 1 8
COM VCC
2 7
CP5 INH CH0
3 6
VEE CH1
4 5
GND A
TC7W53FK
Q3
D3 R93
ICF3
IC5
L1SS400 10
1 8
DTA114EU
Q4
R94 CP6
2 7
3 6
18k
5
4
L2SC4081
TC7W02FU
1
2 Q5
3 L2SC4081
R101 R102
COMTXD
4.7k Q6 47
IC7
1 8 L2SA1576AS
2 7
R105
3 6 Q7 COMRXD
4 5
1k
2SK880
TC7WH14FK
IC9
R113
470
PC357N6J000F
J3
R117
NMEAI+
1
NMEAI-
47 2
NMEAO+
3
NMEAO-
4
R118
47