Icom IC-F3GT Service Manual page 35

SECTION 12 VOLTAGE DIAGRAM
AFOUT
DISCIN
VCC
T5
R5
J5
S5
AXN330C038
5V
R5
16 SCK
S5
15 OPV1
17 SI
14 OPV2
18 SO
13 OPV3
19 CIRQ R5
BUSY
12 GND
S5
20 CCS
11 OPT3
21 REM
10 OPT2
22 AFOUT VCC
9 OPT1
to Optional unit 23 DISCIN
8 SIGOUT
24 RXMUTE RMUTE
CPU5
7 MOWN
25 BEEPOUT
6 BUSY
26 AFONOP
5 AUX
27 MICMUTE MMUTE
4 MICIN
PTT
28 VCC
3 MICOUT
29 5V
2 PTTOUT
30 GND
1 PTTIN
MIC
VOLIN
VOLOUT
C223 C224
AFOUT
0.01 0.01
D34
MA8056 M
E only
J6
BM02B-ASRS-TF
SP
1
2
CPU5
C164
0.001
VCC
5V
R5
S5
MC1
T5
KUC3523-040245
Q22
MIC
2SA1577 Q
MIC
R144
22 K
C163
0.001
PTT S3
SWITCH JPM1990-2711R
R143
TP76N00N-15F-10KA-2251
VOLOUT
VOL/ PWR
SWITCH VOLIN
VCC
CPU5
S5
T5
A
R142
(VR) R5
100
C282
470 P N
0.001 [OTHER]
HV R132
J2
470
HSJ1122-010010
OPT
MIC
EXT.MIC
R174
15 k
D27
RB706F-40
C165 C166
0.001 0.001
AFOUT
SP
EXT.SP
CLONE
Q31
DTC144TU
4.92 V
J3
HSJ1456-01-220A
C167 C168 C169
47 P 0.001 0.001
BATT
GND
C283 C173
C305
0.001 47 470 P
E only
BDET
IC3C
C132
R266
R131 0.0056
15 k NJM2902V
10
470
TX: 3.69 V
9
C304
RX: 5.01 V
D 0.047
C134
220 P
R105
390 [OTHER]
C209 470 I
Q17
0.1
C
TX: 4.84 V UN911H
R108
RX: 0 V
150 k
C133
0.1
R109
R137 R104
C147 C154 R130 10 k
100 100 k
0.047 10 100 k
C148
TONE
0.01
R125
27 k
5.06 V Q18
2SB1132 R
TX: 0 V
TX: 4.97 V
Q21
RX: 5.01 V R135
RX: 0.03 V
2SA1577 Q
10 k
C174
22 Q19
XP6501 AB
C294
R261
R260 6 5 4 5.01 V
33 10 k
10 k
Q20
R139
DTA144 EU
R141
4.7 k 1 2 3
4.7 k
TX: 0.85 V TX: 5.01 V
RX: 5.01 V RX: 0.86 V 4.44 V
C162 C161
0.01 0.01
R134 C159 C160
2.2 k 470 P 0.01
R140
100 k S2
JPM1990-2711R
UP DN
R239
1 k
1 2 3 P0
C299
470 P
4 5 6 P1
7 8 9 P2
4.96 V
* 0 # P3
BDET
S1
JPM1990-2711R
12 - 1
R95
R177
1 M
1 k
IC4
C125
0.0022 BU4066BCFV
6 1
I/O VDD
8 7 2
O/I CONT.A
C217 C124 C126 5 R257 3
O/I CONT.D
0.1 0.01 0.0027 1
4
I/O I/O
5
IC3B
CONT.B O/I
R94 6
NJM2902V CONT.C O/I
R176 R93 1 M 7
VEE I/O
3.9 k 27 k
R96
C286 C131
47 k
0.0022 0.01
VOLIN VOLIN
VOLOUT VOLOUT
AFOUT AFOUT
TX: 5.0 V
C215
RX: 0.01 V
BEEPOUT 0.1
R171
47 k
CPU5
VCC
5V
5.02 V
IC10
R150
M62363FP-650C
470
1
VIN1
T1 2
VOUT1 VOUT8
C158 T2 3
VOUT2 VOUT7
10 T3 4
VIN2
5
T4
VDD
6
DAST
LD RESET
0.12 V SCK 7
CLK VDAREF
SO 8
DI
9
VIN3
10
VOUT3 VOUT6
11
VOUT4 VOUT5
12
VIN4
C156
C155
0.01 D
10 R153 R152 R154 C244 C236
0.1 [OTHER]
470 k 470 k 470 k 0.01 0.01
C309
0.1
D only
S5
T5
R5
R220
270 k
KR0
KR1 DTMF
KR2 R218
3.8 V
KR3 120 k
R219
5 4
120 k
R221
0.8 V Q36
1
330 k
2SC4116 GR
IC14 3
C248
0.01 TC7S66FU
D only
KS4
T5
KS3
IC13
KS2
TC7S66FU
KS1 R5 5 1
KS0 3
4
IC12A
R238
NJM2904V R268
2
1 k R211
100 k
R190
120 k IC12B
R192
22 k
C201 R198
22k R199 NJM2904V
3 8
0.1 18 k
R191 47 k
1
22 k
2
4
R197 C200
C222
0.1 220 k 0.033
R200
47 k
0 V
C202 R212 C198
0.01 68 k 2.2
4 3
C249 C221 C225
0.01 0.039 0.0047 I
2
0.0068 [OTHER]
R240
5 1
1 k
S1
Q40
XP1213
R5
S5
VCC
R97
220 k
C212
R98
0.01
180 k
R114
14
R168
22 k [OTHER]
13
10 k
C213 R107 33 k I
12
2.2 150 k
11
10 R44
10 k R
9 C214 R113
R112 18 k [OTHER]
8 0.033 68 k
20 k A, D
1 M
R169 R159
R170
C136
C128 10 k R
10 k 100 k
0.0056
1 12 k [OTHER]
SQLIN
5.01 V
L33
1.0 H
C123
0.001
24
VIN8 R103
23
R148 C197 12 k
22 100 k 0.1
21
VIN7
20
R146
GND IC11
19
12 k
S-80942ANMP-DD6
18
17
DO
16 R147
VIN6
15 1 5 12 k
OUT CD
14 2
VDD
13 3 4
VIN5 VSS NC
C230 C144
0.022 0.001
IC7
HN58X2432TI [OTHER]
R276
R164
HN58X2464TI Q
10 k 100 k [F3GT] only
D only
8 1
VCC A0
7 2 SCK
WP A1
6 3 SI
SCL A2
5 4 SO
Q42
SDA VSS
DAST
DTC144EU
D only
CLOUT
R228
10 k
C245
2 R213 CLIN
0.01
470
R275
R225 R234 PLST
4.7 k
10 k D
D only 100 k NOIS
22 k [OTHER]
CIRQ
R231
CTCSS
BUSY
22 k
1.5 V
CTDA2
CCS
OPT1
0.4 V R230
OPT2
56 k
R206
DTCS CTDA1
OPT3
470 k C250 1.2 V
0.01
R229
180 k
0.4 V CTDA0
Q35
DTCS
6
2SC4116 GR
R227
7
R203 R202
5 47 k
47 k 47 k
R224
8.2 k D
C227
22 k A CTCSS
C228
0.047 D C219
3.8 V
27 k [OTHER]
820 P
0.0082
0.1 [OTHER]
R207
47 k
Q38
R267 C216 DTC144EU
47 k R
0.1 [OTHER]
100 k [OTHER] 0.22 D
DUSE
AFOUT
DISCIN
VCC
T5
R5
S5
5V
R5
S5
VCC
VOLMIN
Q15
7.23 V —
R115 2SB1132 R
120 k
TX: 0 V TX: 0 V
1.94 V
RX: 4.62 V RX: 3.96 V
Q16
C135
1.94 V
XP6501
180 P
R120
6 5 4
68 k
R117
13
1.5 k
14
R99 D26
12
R178
12 k DAN202K
R116 3.9 k
IC3D 1 2 3
1 k
NJM2902V
C137
0.027 [OTHER]
0.033 I
R100 C129 R145 C139 R121 C140
1.8 k 15 1 M 0.1 1 k 0.1
VOLOUT
AFOUT
TX: 0 V
RX: 4.99 V
R265
BDET 100 k
C302
0.1
R182
NTCCM20124AG473JCT
VCC
CPU5
CTCIN
REMO
R215
100 k
TEMPS
R216 C231 R181 C232
100 k 0.1 100 k 0.1
X2
CR-663
D14 C195
MA77 56 P
R102
10
C196 C193 R101 C194
470 P 8 P 1 M 15 P
VIN 1
PB0/AN0
2
AVSS
3
TEST
4
X2
5
X1
6
VSS
XIN 7
OSC1
XOUT 8
OSC2
RESET 9
R226
RES
10
1 k
NMI
IC8
CSIFT 11
P20/IRQ4/ADTRG
HD64
SCK 12
P21/SCK1
SI 13
P22/SI1
SO 14
P23/SO1
DAST 15
P24/SCK3
CLIN 16
P25/RXD
CLOUT 17
P26/TXD
R232 PLST 18
P27/IRQ0
1 k NOIS 19
P17/IRQ3/TMIF
CIRQ 20
P16/IRQ2
BUSY 21
P15/IRQ1
CCS 22
P14
OPT1 23
P13/TMIG
OPT2 24
P12/TMOFH
OPT3 25
P11/TMOFL
4.8 V
R235
4.4 V
680 k
CONT
R243 R242 R241
1.4 V
1 M 1 M 1 M
1.0 V
4.5 V
1.2 V
R194 R195 R196
R272
100 k 100 k 100 k 100 k
R193
100 k D only
R165
100 k [F3GS] only
C199
0.1
R273
100 k
D only
R
2
TX:
RX: