Icom iC-M501EURO Service Manual page 37

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11-2 MAIN UNIT
MAIN UNIT
VCC
TMODE
TAUX3
R195
R182
1k
39k
IC15
S-80928ANMP
1
CD 5
RESET
OUT
2
VDD
3
NC 4
VSS
R183
39k
7.98MHz
4.9Vp0p
C249
X3
10p
R186
DMX-26S
100k
R187
1M
C250
R188
33P
390k
C251
X4
76
24p
CR-610
PA2
77
X1A
78
X0A
R189
79
VSS
1M
80
X0
81
X1
82
C252 24p
R190 10
VCC
83
P00/AD00
84
P01/AD01
R191
R192
85
100k
2.7k
P02/AD02
86
P03/AD03
87
P04/AD04
IC16
88
R193
P05/AD05
MB90F583BPFV-G
89
27k
P06/AD06
90
P07/AD07
ATT1
91
P10/AD08
92
ATT2
P11/AD09
93
P12/AD10
94
P13/AD11
95
P14/AD12
96
P15/AD13
P01
97
P16/AD14
98
P17/AD15
99
P20/A16
100
SRESET
P21/A17
R194
100k
R213
R214
1k
1k
STRU
STRU
SCON
SCON
R215
R245
1k
1k
OPSTB
PSTB
CK
DATA
R243
R216
R244 1k
1k
PTTM
1k
PTTS
MMUTE
SMUTE
R217
SP
1k
HI/LO
SEND
Q34
DTA144EU
C258
/TMUT
R223
Q35
100k
0.1
DTA144EU
MLDA
R218
10k
R219
100k
R220
100k
LMDA
R221
100k
R224
R222
100k
Q36
100k
DTC144TU
RESET
TMODE
for FLASH
D26
J1
HSU88
DTV
GND
1
2
TAUX3
TAUX3
TMODE
3
4
P01
P01
TRES
5
6
SIN0
SOT0
7
8
SCK0
GND
9
10
J4
HV
1
VPP
2
HVS
3
MLDA
MLDA
4
LMDA
LMDA
5
8V
6
SRESET
SRESET
from LOGIC
7
unit J4
GND
8
D5V
9
GND
10
SP+
11
SP-
12
SP+
13
SP-
14
VCC
TMODE
TAUX3
PLL BUS
OPT BUS
MAIN BUS
R199 100k
Q42
Q41
RMUTS
DTA144EU
DTA144EU
RMUTM
ATT1
ATT2
RCV
R200
ATTB
100k
ATTA
R196
1k
OPTIN
HANG
PTT
BE
R197
1k
DATAM
MDDA
DATAS
DATAS
R204
R198 1k
150k
R201
100k
C254
R205
R202 100k
0.01
47k
HSTK 50
MD2 49
MD1 48
R203 100k
MD0 47
R206
1k
P81/IRQ1 46
UNLK
P80/IRQ0 45
DSDEC
P57/AN7 44
TXDET
P56/AN6/SCK4 43
WXDEC
P55/AN5/SOT4 42
P54/AN4/SIN4 41
VSS 40
LBAT
P53/AN3 39
SQL
P52/AN2/SCK3 38
RTXD
P51/AN1/SOT3 37
RRXD
P50/AN0/SIN3 36
AVSS 35
R207
AVRL 34
1k
AVRH 33
R208
AVCC 32
100k
P74/DA01 31
P73/DA00 30
C255
DVSS 29
0.1
DVRH 28
P72 27
MICDSC
P71 26
R209 1k
R210
1M
Q33
2SK1069
DSC
C257
0.1
C256
R211
R212
10
56k
2.7k
D5V
C259
IC17
0.1
HN58X2464TI
8
A0 1
BE
VCC
7
A1 2
GND
6
A2 3
SCL
5
VSS 4
SDA
C260
0.001
D24
R227
DA204U
15k
Q37
DTC144TU
R228
R229
1k
1k
CLTX
CLRX
RRXD
ICF3
UART BUS
R238
100k
RTXD
CMDA
D5V
R233
IC18
C261
C262
1k
TC7W14FU
0.1
R230
0.1
Q40
1
8
4.7k
2SK1069
2
7
3
6
C306
4
5
0.1
R234
R235
47k
Q38
1k
2SC4081
MCDA
R236
6.8k
R231
47
Q39
2SA1576
11 - 2
VCC
8V
A5V
R40
R36
4.71V
47
680
C68
0.001
L8
R35
R38
0.1µ
68k
C79
C78
C303
68
R246
IC2
0.022
0.001
C66
100k
µPD3140GS
0.001
5p
C67
1
GND1 20
R39
R37
R45
VCC1
100
20p
1k
2
IN2 19
100
IN1
Q5
PSTB
3
VCC2 18
ENB
2SC4215
4
XB 17
CK
CLK
DATA
5
XI 16
DATA
UNLK
6
XO 15
R41 330
X2
T1
7
GND2 14
CR-659
LOK
R43 1k
8
CP2 13
CP1
9
FI2 12
FI1
R254
10
FO2 11
FO1
C74
C69
C81
560
0.001
18p
0.01
R255
1k
R253
R256
C293
Q6
18k
8.2k
0.1
2SK880
R44
CP2
10k
R42
C294
C295
C73
C72
47k
0.047
0.1
0.001
2.2
Q44
R248 47k
2SC4116
R249
R261
C283
C285
C286
33k
4.7k
0.001
Q7
0.001
0.1
2SK210
C290
C291
D29
0.5p
0.5p
1SS355
D6
C304
R252
MA363B
0.22
C288
4.7k
4p
R259
10
L9
L11
L10
C289
3.3µ
2.7µ
R251
C292
3p
LB-258
82
0.22
Q45
2SC4116
C278
0.001
C300
C301
R276
R262
C314
0.001
0.1
47
C318
2.2k
10
10
Q8
L15
R270
C305
0.1µ
2SK210
0.22
5.6k
R55
68k
D9
MA363B
C298
R257
1k
2p
Q9
C302
2SC4215
0.75p
L12
L14
L13
C299
R258
2.7µ
C296
3.9µ
LB-257
4p
1k
0.047
D10
MA363B
D28
DAP202U
J3
W3
ICF3
ICF3
1
GND
2
MDDA
MDDA
3
DATAS
DMDA
4
MCDA
MCDA
5
CMDA
CMDA
6
D5V
7
GND
8
VCC
9
DSCMOD
10
SAFO
11
GND
12
SMIC
13
MICG
14
R240
R239
100k
100k
VCC
8V
A5V
T8
R8
DEMOD
CP3
C52
C51
R26
C50
455kHz
0.001
470
0.001
0.1
L28
X1
R28
2.2µ
CDBCA450CX24
390
R8
C43
C39
C65
C55
C54
0.01
0.001
R23
0.001
0.1
47p
100k
C53
R27
100p
1.2k
C33
0.001
C56
D5
C57
R22
MA8036
0.01
10
1.5k
R29
1.5k
C38
C58
0.001
Q4
0.001
2SC2714
FI2
FL-310
IC1
R32
C63
TA31136FN
220p
33k
R30
330k
R33
FI3
20k
ALFY450E
C64
R31
2
1
220p
820
5
4
3
CP1
R283
NTCCM16084LH
R250
47
R63
2.2k
R8
RX : 3.03V
RX : 0V
TX : 0V
C102
C103
TX : 7.95V
0.001
0.001
T8
D11
R58
R65
R70
R71
MA77
C111
100
C105
D12
10
2.2k
1k
0.001
0.001
MA77
L16
C100
R56
R59
R72
C96
0.1µ
0.001
R64
C108
680
3.3k
R67
L17
100
0.001
39
0.001
10k
82n
C101
12p
C106
C97
47p
0.01
C109
Q10
18p
2SC4215
R66
Q11
390
2SC3775
R57
C98
100
12p
C104
R60
R61
R62
R68
0.001
C313
C110
2.2k
220
1k
10k
47p
0.001
D13
1SS355
HVS
HV
D5V
SMIC
SAFO
A5V
MOD
SP-
SP+
DSCMOD
VCC
ICF3
D5V
C12
C11
IC3
0.1
0.0047
TC7S14FU
J2
5
1
ICF3
14
IC2
GND
2
TLP121
13
MDDA
4
3
12
DMDA
11
MCDA
R16
R15
10
CMDA
1M
6.8k
9
D5V
8
GND
7
VCC
6
R12
DSCMOD
5
12
SAFO
4
GND
3
R11
D3
SMIC
R17
Q2
2
MICG
47k
4.7k
2SC4116
MA8062
1
Q1
5.07V
DTC144TU
R13
100k
DATAS+
D4
R18
R10
DA204U
10k
5.6k
C6
0.1
IC1A
C1
M5218AFP
R2
0.1
C14
8
22k
R21
0.0033
R19
6
3
82k
82k
C2
R1
7
1
0.001
2.54V
10k
5
2
R20
IC1B
82k
R3
M5218AFP
4
10k
C15
C13
82p
R4
R22
390p
22k
560
2.53V
MAIN(1)
VCC
8V
A5V
T8
R8
DEMOD
BUS LINE
SQLI
C48
0.22
R25
100
R8
C42
C40
C30
C41
R19
0.022
0.001
0.01
0.001
10
C32
L5
C31
R20
0.022
0.82µ
68p
2.2k
Q3
C34
3SK166
0.001
R21
RF
FI1
1.2k
FL-310
R241
56
MAIN(2)
L7
C47
56n
0.001
L30
R18
0.15µ
C46
10k
C45
39p
39p
LOCK
VCC
T8
RX : 0.3V
TX : 13.2V
R73
10
VGG
C114
C115
L18
0.001
6.8
82n
C116
L19
L20
22p
47n
47n
C112
PI
1p
C117
C118
C119
18p
39p
18p
Q12
2SC2954
HVS
HV
D5V
MAIN BUS
OPT BUS
SMIC
SAFO
A5V
MOD
SP-
SP+
DSCMOD
R14
470
D5
1SS355
D6
MA8062
4.64V
for
C9
DSC UNIT
0.1
J1
VCC
GND
D2
D1
MA8062
MA8062
T1
DSC+
DSC-
DSC UNIT

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