Icom ID-31A Service Manual page 38

• MAIN UNIT (1/2)
J3
1 50
NOIS HV
RSSI 2 49 VCC
DMOD 3 48 CHGH
DDET 4 47 CHGC
DAFO 5 46 TXI-V
6 45
3VS BTVIN
T3C 7 44 AFON
PS3 8 43 SPMUTE
R267
5VS 9 42 WN
1.8K
10 41 DAFS
11 40
MICAMPO CLONE
D_AS 12 39
FMMUTE 13 38 CTCIN
LV 14 37 PCON
CTCOUT 15 36 TTEMP
16 35
R3C
17 34
PLLSW BTDETO
PLLCK 18 33 BEEP
PLLDATA 19 32 TXMUTE
PLLSTB 20 31 VCO_MUTE
VCO_SEL
PPS 21 30
22 29 SQL
UNLK
DADATA 23 28 INTPTT
DACK 24 27 MICGND
DALD 25 26 EXTMIC
SP1 J1
2
1
SQL
R14
C25
ERJ3GE-JPW 220
BTL-
R25
EP10 0
C21
R7
MMZ1608Y121BT
ERJ3GE-JPW 220
BTL+
J4
EP11
MMZ1005Y102CT
EP12
MMZ1608Y121BT
CLONE
AFON
3VS
INTPTT
EP7
OPT MMZ1005Y102CT
R10
EP8 470
J5 MMZ1005Y102CT
MICGND
EXTMIC
HV
C22
0.001
R5 D2
1M SB07-03C
CHG
R6
220K
Q7
DMC501010
EP5 EP6
J2
MPZ1608S101A MPZ1608S101A
R18 R21
R22
33K
1.8K 330
D4
RB050LA-40
7.40V
C23
EP4
MP1 22
3322 MPZ1608S101A
1
+
2
S
3
-
Q8
Q2
TPCF8107
TPCF8107
4.96V
Q1
R4 R9 LDTC144TE
10M 10M
R19
Q3 100K
LDTC144TE
VCOMOD
3.18V
3.18V Q14
R50
2SA1832
6.8K
R52
47K
4.69V 4.01V 3.27V
IC3
Q12
NJU7775F04
2SC4738
1 5
VIN VOUT
2
GND
3 4
CTRL NC R41
1.2K
C27
1
R55
C49
1K
0.001
C28
1
X1
CR-875
R27 VCC OUT
4 3
2.2M
VCON GND
1 2
R37
1.48V
0
BTL5V
2.73V 3.44V
IC2
TPA0211DGN
VO+ BYPASS
5 4
SE/ BTL VDD
R43 C48
6 3
GND SHUTDOWN 3.3K 0.47
7 2
VO- IN
8 1
2.73V
1.63V
3.28V 4.28V R49
1M
1.15V
7.39V
Q9
1 IC4 12
2SA1832
PGND GND
2 TPS62110RSAR 11
VIN GND
3 10
VIN FB
4 9
EN AGND
Q10
LDTC144EE
R26
1K
C29
0.001
R44
0.18
C62
100P
R45
0.18
R48
R54
120K
R46 1M
0.18
C65
R53
0.001
470K
11 - 3
3.27V
R82 C98
8.2K 0.01
C103
0.3P
Q21
LDTC144EE
R67
L4
R71
1.5K R93
MLG1608S
1.2K
1.8K
4.99V
R74
0
IC6
MB15E03SLPFV1-G-BND-E1
1 16
OSCI R
2 15 R103
OSCO P
3 14 470
VP L/F
4 13
VCC ZC
5 12
DO PS
6 11
GND LE 0.73V
7 10
XFIN DAT
8 9
FIN CLK
Q22
4.09V
LDTC144EE
Q15
DMC501010
3.29V
R68 IC8
2.78V
TC74VHC4066AFK
10K
1
I/O1
2
O/I1 CONT1
3
O/I2
CONT4
4
I/O2 I/O4
5
CONT2 O/I4
6
CONT3 O/I3
7
VSS I/O3
R97
10
R98
82K
1.64V
C100
R84 180P C106
390
0.0027
R94
IC9
220K
LMV324IPW
C77 1.64V C80 1
0.033 0.0047 2
MICAMPO 3
C81 C89 4
R78
0.0047 1.61V 0.0039
5
15K
6
7
C88 R91
0.0015 22K
1.51V Q23
LDTC114EE
C104
0.01
5VS
R57
120K 4.69V
3VS
R3
3.21V
R59
10K
IC5
TX:7.17V Q17 TX:6.41V
LM2904PWR
D9
RX:0.22V 2SA1832 RX:7.16V
DZ2J033M0L
1 8
C84
2 7
0.001
3 6
C78
4 5
0.001
T3C_INV
Q19
C71
LDTC144EE
R65
R61 0.001
R69
1M
120K
470K T3C
TX:0.00V
RX:7.16V C94
0.001
3.18V
2.95V
C119 1.87V
Q27
8P
2SC5006
C132 R126
C154
0.5P 120
2.93V
22P
Q30
2SC5006
1.23V 0.74V
1.29V
R132
470
4.99V
Q26
2SK880
C139 2.23V
L7 47P
MLK1005S
0.74V
R143
R113
8.2K 100
C150
100P
Q29
2SC5006
3.30V
R118 R121 C135
33K 10K
1
C147
DV:3.30V R129
68K 0.022
Q31
DMG504010
0.27V
R136
14 4
VDD 68K
13
12 5
R271
11
100
10
6
9
R145
8
10K
1.30V
3.30V
C115 R127
10 10K
R107 5.01V
39K
C114
1.64V
390P
14 R115
2.2K
13
12 R111
100K
11
10
9 C113 R116 IC11
R139
R2A20178
8 1 3.3K 0
1.58V
R106
R102
12K
22K 1.60V
5
1
4
3
2
IC16 1.63V
LMV321IDCK
4.69V
IC15
NJM2831F05
1 5
CTRL VIN
2
GND
3 4
NC VOUT
5.01V
*: Refer to the PARTS LIST for the value and name of component.
3.18V
4.61V
T5
2.85V
C165 D14
39P HVD144A
0.79V
C158
1.58V
0.001
0.89V
Q32
2SC5008
3.22V
R157
2.7K
1.64V
BPF1
C160 BPF2
10
0.71V
3
2 BPF3
1 0.11V
R152
100K
TXMUTE
R3
3VS
REF
CTCOUT
SQLOUT
SQLIN
BPF3
BPF1
+5V +5V
Q33
LDTC144EE
VIN3
6 DADATA
DI
5
CLK
4
Q34
LD
3
LDTC144EE
VDD
2 DACK WN
VIN2
1 DACK
Q35
LDTC144EE
DALD
BPF2
REFCON
REFMOD
VCOMOD
BEEP
3.29V
IC10
TLV70033DDCR
1 5
IN OUT
2
GND
3 4
EN NC