Icom IC-M502 Service Manual

11 - 2
11-2 MAIN UNIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J2
PWRC/ICF3
GND
MDDA
DMDA
MCDA
J1
1
TC4W53F
IC1
2
3
4
8
7
6
5
D5V
SMIC
SAFO
PTTC
1
C11
1
C12
C13 1
GND
5
7
4
3
1
8
2
6
VCC
AF/MIC
MICG
EXTRXD
PWRC/ICF3
EXTTXD
PTTC
+5V
VCC
VCC
DSCMODDSCMOD
SAFO
GND
SMIC
MICG
CMDA
RESET
R19
10
C31
47p
C32
0.022
C33
0.001
R22
1.5k
R23
100k
330
R304
C40
0.001
R25
3.3k
C42
0.022
C43
0.001
R20
2.2k
L34
1µ
DEMOD
C39
0.01
Q4
2SC2714
C48
0.22
C49 0.1
IC1
TA31136FN
C50
0.001
R26
470
C51
0.001
C52
0.1
C53
100p
X1
CDBCA450CX24
R27
1.2k
R28
390
C54
47p
C55
0.01
R29
1.5k
D5
MA8036
C56
10
C57
0.01
R8
CP3
C65
0.001
R35
68k
R36
680
L8
0.1µ
C66
5p
Q5
2SC4215
C67
20p
R37
100
R39
100
C68
0.001
R40
47
R38
68
C303
0.001
VCC1
1
IN1
2
ENB
3
CLK
4
DATA
5
T1
6
LOK
7
CP1
8
FI1
9
FO1
10
FO2
11
FI2
12
CP2
13
GND2
14
XO
15
XI
16
XB
17
VCC2
18
IN2
19
GND1
20
IC2
µPD3140GS
VCC
R8
8V
VCC
T8
+5V
8V
+5V
C79
0.022
Q42
DTA144EU
R246
100k
OPTIN
HANG
ATTA
ATTB
ATT2
MAIN BUS
PLL BUS
OPT BUS
VCC
TAUX3
TMODE
R199 100k
R200
100k
Q41
DTA144EU
RMUTM
RCV
RMUTS
ATT1
VCC
R182
39k
R183
39k
C248 0.027
R184 100k
R185 100k
OUT
1
VDD
2
VSS
3
NC
4
CD
5
IC15
S-80928ANMP
TAUX3
TMODE
R186
100k
R188
47k
R305
47k
C251
24p
X4
CR-610
C252 24p
R189
1M
R190 10
R191
100k
R192
2.7k
C253 0.1
P71
26
HSTK
50
PA2
76
P21/A17
100
P72
27
DVRH
28
DVSS
29
P73/DA00
30
P74/DA01
31
AVCC
32
AVRH
33
AVRL
34
AVSS
35
P50/AN0/SIN3
36
P51/AN1/SOT3
37
P52/AN2/SCK3
38
P53/AN3
39
VSS
40
P54/AN4/SIN4
41
P55/AN5/SOT4
42
P56/AN6/SCK4
43
P57/AN7
44
P80/IRQ0
45
P81/IRQ1
46
MD0
47
MD1
48
MD2
49
X1A
77
X0A
78
VSS
79
X0
80
X1
81
VCC
82
P00/AD00
83
P01/AD01
84
P02/AD02
85
P03/AD03
86
P04/AD04
87
P05/AD05
88
P06/AD06
89
P07/AD07
90
P10/AD08
91
P11/AD09
92
P12/AD10
93
P13/AD11
94
P14/AD12
95
P15/AD13
96
P16/AD14
97
P17/AD15
98
P20/A16
99
IC16
MB90587CA-107
R193
27k
DATAM
DATAS
R201
100k
R202 100k
R203 100k
R45
1k
C81
0.01
R204
150k
C254
0.01
R205
47k
R253
8.2k
C294
2.2
UNLK
PSTB
UNLK
DSDEC
TXDET
WXDEC
LBAT
SQL
RTXD
RRXD
PTT
BE
CK
DATA
MDDA
DATAS
C69
18p
X2
CR-659
C70 10p
C71 12p
R41 330
R42
47k
R289
3.3k
C72
0.001
C74
0.001
R43 1k
Q6
2SK880
R44
10k
C283
0.001
R248 47k
R249
33k
R256
18k
R254
560
C293
0.1
R255
1k
C77 0.001
Q7
2SK210
C285
0.001
Q44
2SC4116
C286
0.1
R261
4.7k
R250
47
D29
1SS355
C295
0.047
CP2
C58
0.001
1 2
345
FI3
ALFY450E
C59 0.1
C60 0.001
C62 1
R30
330k
C63
220p
C64
220p
R32
33k
C103
0.001
R63
2.2k
C102
0.001
R33
20k
R31
820
R283
NTCCM16084LH
R8
HVS
HV
+5V
SMIC
SAFO
+5V
MOD
SP
-
SP+
R18
10k
R21
1.2k
FI1
FL-310
FI2
FL-310
C38
0.001
C45
39p
L7
56n
C47
0.001
Q3
3SK166
R241
180
C46
39p
C274 0.001
C34
0.001
C36 6p
C312 0.01
L30
0.15µ
CP1
IC21
NJM2125F
R72
100
C110
0.001
C111
0.001
R73
10
R292
R290
120k
27k
L18
82n
C112
1p
Q12
2SC2954
R74 1k
C114
0.001
C335
0.01
C331
0.01
C115
6.8
C116
22p
C117
18p
L19
47n
C118
39p
L20
47n
C119
18p
R75 10
C113 0.001
C96
0.001
C97
0.01
C98
12p
R57
100
R58
100
R60
2.2k
L16
0.1µ
Q10
2SC4215
R61
220
C99 0.001
C100
0.001
C101
12p
D11
MA77
D12
MA77
R62
1k
R64
39
R65
2.2k
R66
390
C104
0.001
C105
0.001
R67
10k
R68
10k
L17
82n
Q11
2SC3775
C107 0.001
R70
10
C108
0.001
C109
18p
R71
1k
R291
47k
D13
1SS355
R59
3.3k
C106
47p
R69 100
T8
R55
68k
L15
0.1µ
Q9
2SC4215
R56
680
C278
0.001
L12
3.9µ
D10
MA363B
D9
MA363B
L13
LB-257
C297 1p
C298
2p
C299
4p
Q8
2SK210
L14
2.7µ
R258
1k
L9
3.3µ
D7 MA363B
D6
MA363B
D8 MA363B
C284 1p
L10
LB-258
C287 7p
C288
4p
C289
3p
C290
0.5p
C291
0.5p
L11
2.7µ
Q45
2SC4116
R262
2.2k
R251
82
C304
0.22
R259
10
C305
0.22
C302
0.75p
R270
5.6k
C301
0.1
C300
0.001
C314
10
R276
47
C318
10
R209 1k
Q33
2SK1069
R212
2.7k
R252
4.7k
C292
0.22
R257
1k
C296
0.047
DSC
MICDSC
BE
BAND EXTENTION
+5V
R208
100k
C255
0.1
C256
10
C257
0.1
R210
1M
R211
56k
R225 47k R226 47k
C259
0.1
A0
1
A1
2
A2
3
VSS
4
VCC
8
GND
7
SCL
6
SDA
5
IC17
HN58X2464TI
STRU
SCON
R194
100k
STRU
SCON
OPSTB
PSTB
PTTM
SRESET
CK
DATA
P01
ATT1
ATT2
Q34
DTA144EU
R218 10k
R219 100k
R220 100k
R221 100k
R222 100k
470
R237
NMEAI+
NMEAI
-
R224
100k
PTTS
MMUTE
SMUTE
SP
HI/LO
SEND
/TMUT
MLDA
LMDA
R223
100k
Q35
DTA144EU
Q36
DTC144TU
C258
0.1
R227
15k
Q37
DTC144TU
R228
1k
R229
1k
D24
DA204U
ICF3
RRXD
+5V
UART BUS
RTXD
CMDA
D26
HSU88
D27
1SS355
R233
1k
R234
47k
C262
0.1
R236
6.8k
1
2
3
45
6
7
8
IC18
TC7W14FU
R235
1k
R238
100k
R230
4.7k
Q40
2SK1069
for FLASH
+5V
TAUX3
GND
TMODE
TRES
GND
P01
SOT0SIN0
SCK0
12
34
56
78
910
J1
P01
TAUX3
TMODE
RESET
MCDA
CMDA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J3 W3
ICF3
GND
+5V
VCC
VCC
SAFO
GND
SMIC
MICG
MDDA
DMDA
C9
0.01
C7
0.01
C15
0.01
D4
MA8062
C14
0.01
R239
100k
Q38
2SC4081
Q39
2SA1576
D28
DAP202U
R240
100k
R1
100k
R2
100k
R4
1M
R5
1M
R6
100k
1M
R3
C306
0.1
C263
0.0047
R231
47
ICF3
MCDA
CMDA
MDDA
MCDA
DATAS
SRESET
MLDA
LMDA
from LOGIC
unit J4
EXT-GPS
SP
-
SP -
HVS
HV
LMDA
MLDA
VPP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J4
1
2
J2
GND
SP+
SP+
GND
SRESET
+5V
8V
CTRL UNIT
MAIN UNIT
RSTX
PA1 PA0
P97/POT
P96/PWC
P95/TOT2/OUT1 P94/TOT1/OUT0
P93/TOT0/IN3
P92/TIN2/IN2 P91/TIN1/IN1 P90/TIN0/IN0
RX*
TX*
P65/CKOT
P64/PPG0 P63/PPG1
P62/SCK2 P61/SOT2
P60/SIN2
P87/IRQ7 P86/IRQ6 P85/IRQ5 P84/IRQ4 P83/IRQ3 P82/IRQ2
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
BPLVLM BEEPM
FLASH BUS
P22/A18 P23/A19 P24/A20 P25/A21 P26/A22 P27/A23 P30/ALB P31/RDK VSS P32/WRLX P33/WRHX P34/HRQ P35/HAKX P36/RDY P37/CLK P40/SIN0 P41/SOT0 P42/SCK0 P43/SIN1 P44/SOT1 VCC P45/SCK1 P46/ADTG P47 C
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
OPSTB PSTB CK DATA PTTM PTTS
MMUTE SMUTE SP HI/LO SEND TMUT SRXD STXD TCK CLRX CLTX
CLRX
CLTX
8V T8 R8 VCC
SQLI
AFOUT
QUAD
IFOUT
RSSI
N_DET
N_REC
GND
MIXIN
9 10 11 12 13 14 15 16
FILIN FILOUT DEC IFIN VCC MIXOUT OSCOUT OSCIN
8 7 6 5 4 3 2 1
VCC 8V +5V
MAIN (2)
4
1
3
2
5
C10
10
TLP121
IC19
EXTMIC PTT ON :0V
EXTMIC PTT OFF:4.95V
13.2V
4.95V
2.46V
4.71V 21.25MHz
21.7MHz
RX : 3.03V
TX : 0V
RX : 0V
TX : 7.95V
RX : 0.3V
TX : 13.2V
MAIN (1)
BUS LINE
SQLI
R8
c
d
VCC
T8
VGG
PI
HVS
HV
+5V
MAIN BUS
OPT BUS
SMIC
SAFO
+5V
MOD
SP -
SP+
DEMOD
R8
T8
+5V
8V
VCC

Icom IC-M502 Specifications

General

Brand	Icom
Model	IC-M502
Category	Transceiver
Language	English