Main Unit - Icom IC-M502 Service Manual

11-2 MAIN UNIT

MAIN UNIT
VCC
TMODE
TAUX3
R182
39k IC15
S-80928ANMP
RESET 1 CD 5
OUT
2
VDD
3 NC 4
VSS
R183
39k
R186
100k
R305 R188
47k 47k
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
R191 R192 P01/AD01
85
100k P02/AD02
2.7k
86
P03/AD03
87
P04/AD04
IC16
88
R193
P05/AD05 MB90587CA-107
89
27k
P06/AD06
90
P07/AD07
91
ATT1
P10/AD08
ATT2 92
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
STRU STRU
SCON SCON
OPSTB
PSTB
CK
DATA
PTTM
PTTS
MMUTE
SMUTE
SP
HI/LO
SEND
Q34
DTA144EU
/TMUT R223 C258
Q35
0.1
100k
DTA144EU
MLDA
R218 10k
R219 100k
R220 100k LMDA
R221 100k
R222 100k R224
Q36
100k
DTC144TU
RESET
TMODE
for FLASH
D26
J1
HSU88
+5V GND
1 2
TAUX3 TAUX3 TMODE
3 4
P01 P01 TRES
5 6
SIN0 SOT0
7 8
SCK0 GND
9 10
R237
470
J2
D27 C263
NMEAI+
EXT-GPS 1 0.0047
1SS355
NMEAI-
2
J4
HV
1
HVS
2
LMDA
3
MLDA MLDA
4
VPP LMDA
5
8V
6
SRESET SRESET
from LOGIC 7
GND
unit J4
8
+5V
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
OPTIN
HANG
PTT
BE
DATAM MDDA
DATAS
DATAS
R204
150k
R201
100k
C254
R205
R202 100k
0.01
47k
HSTK 50
MD2 49
MD1 48
R203 100k
MD0 47
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
AVRL 34
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
+5V
C259
IC17
0.1
HN58X2464TI
BAND EXTENTION
8 1 BE
VCC A0
7 2
GND A1
6 3
SCL A2
5 VSS 4
SDA
D24
R227
DA204U
15k
Q37
DTC144TU
R228 R229
1k 1k
CLTX
CLRX
RRXD
ICF3
UART BUS
R238
100k
RTXD
CMDA
+5V
R233
IC18
C262
1k
TC7W14FU 0.1
R230
Q40 1 8
4.7k
2SK1069 2 7
3 6
C306
4 5 0.1
R234 R235
47k Q38
1k
2SC4081
MCDA
R231
IC19
47
TLP121 Q39
R236 2SA1576
6.8k
11 - 2
VCC
8V
+5V
R40 R36
4.71V 21.25MHz 47 680
C68
0.001
C65
R35
L8
R38 0.001
0.1µ 68k
C79
R246 C303 68
IC2
C66
0.022 100k µPD3140GS 0.001
5p
1 GND1 20 R39 R37 C67
R45
VCC1
100 20p
1k 2 IN2 19 100
IN1 Q5
3 VCC2 18
PSTB
ENB 2SC4215
CK 4 XB 17
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 R44 2SK880
CP2 10k
R42
C295 C72
C294
47k
0.047
2.2 0.001
R250
Q44
R248 47k 2SC4116 47
R249
R261
C285 C286
C283 33k
4.7k
0.001 Q7 0.001 0.1
2SK210
C291 D29
C290
D6 0.5p 0.5p C304 1SS355
R252 MA363B C288 0.22
4.7k 4p
R259
10
L9 L11
L10 C289
3.3µ 2.7µ R251
C292 LB-258 3p
82 C278
0.22
Q45
0.001
2SC4116
R56
C300 C301 R276
680
R262
C314 0.001 0.1
47 C318
2.2k
10
10
L15
Q8
C305 R270
0.1µ
2SK210
0.22 5.6k
R55
68k
D9
R257 MA363B C298
2p
1k Q9
C302
2SC4215
0.75p
L14
L12 L13 C299
R258
C296 3.9µ 4p 2.7µ
LB-257
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
+5V
7
VCC
8
VCC
9
DSCMOD
10
SAFO
11
GND
12
SMIC
13
MICG
14
R240 R239
100k 100k
VCC
8V
+5V
T8
R8
DEMOD
CP3
C52 C51 R26 C50 C48
21.7MHz
0.001 470 0.001 0.22
0.1
R304
X1
R28 330
CDBCA450CX24
390
R8
C43 C42
C39
0.022
C55 C54 0.01 0.001
R23
0.01 47p
100k
C53
R27
100p
1.2k C33
C32
0.001
0.022
D5
C57 C56
R22
MA8036
0.01 10
1.5k
R29
1.5k
C38
C58
0.001
Q4
0.001
2SC2714 FI2
FL-310
R289
3.3k IC1
C63
R32
TA31136FN
33k 220p
R30
330k
R33 FI3
20k ALFY450E
C64 2 1 C47
R31
220p 0.001
820
5 4 3
C46
39p
R283
NTCCM16084LH
R63
R290
2.2k
R8
RX : 3.03V
RX : 0V R292
TX : 0V
C102 C103 TX : 7.95V
0.001 0.001
R291
RX : 0.3V
47k
TX : 13.2V
T8
D11
R58 R70
R65 R71
MA77 C105 C111
100 D12
2.2k 10 1k
0.001 0.001 L18
MA77
82n
L16 C100
R59
R72
C96 0.1µ 0.001 R64 C108
3.3k R67 L17
100
39 0.001
0.001 10k 82n
C101
C112
12p
C106
C97 1p
47p
0.01
C109
Q10
18p
R66
2SC4215 Q11
390 2SC3775
R57
C98
100
12p C104
R60 R61 R62
R68
0.001 C110
2.2k 220 1k
10k
0.001
D13
1SS355
HVS
HV
+5V
SMIC
SAFO
+5V
MOD
SP-
SP+
R1
R3
100k 2.46V
C14 4.95V
1M
0.01
J2 IC1
R2 C10
PWRC/ICF3 TC4W53F
14
100k 10
GND
13 1 8 D5V
MDDA
12
2 7 SMIC
DMDA
11
MCDA 3 6 SAFO
10 R4 R5
CMDA 1M 1M 5 PTTC
9 4
+5V
8 C11
VCC
7 1
VCC
6
DSCMOD
5
C13 1
SAFO C12
4
GND
1
3
SMIC
2
MICG
1
C7
0.01
D4
MA8062
MAIN (1)
VCC
8V
+5V
T8
R8
DEMOD
BUS LINE
SQLI
R25
3.3k
R8
C40
R19
0.001
10
L34 C31
R20
1µ 47p
2.2k
Q3
C34
3SK166
0.001
c
R21
1.2k
FI1
FL-310
R241
180
MAIN (2)
L7
56n
L30
R18
0.15µ CP1
C45 10k
39p
d
VCC
T8
27k
1 5
4 IC21
120k
3
NJM2125F
2
C331 C335
0.01 0.01
VGG
R73
10
C114 C115
0.001 6.8
C116
L19 L20
22p
47n 47n
PI
C117 C118 C119
18p 39p 18p
Q12
2SC2954
HVS
HV
+5V
MAIN BUS
OPT BUS
SMIC
SAFO
+5V
MOD
SP-
SP+
R6
100k
EXTMIC PTT ON :0V
EXTMIC PTT OFF:4.95V
13.2V
J1
EXTRXD VCC
7 1
EXTTXD
AF/MIC
6 8 2
PTTC MICG
5 4 3
C15
0.01 GND
C9
0.01
CTRL UNIT