Icom IC-F43GT Service Manual page 52

SECTION 11 VOLTAGE DIAGRAM
C136 100 P
R122
R121 220 k
68 k
6
CP45
7
5
IC23
MICOUT
LM2904PWR
MICIN
PTTIN
PTTOUT
PTT SW
MC1
PIT
SKB–2746 LPC
CP3 R237
10
AUTX
Q38
UNR9213J
BEEP
R242 100 k
+5V
C380
R289
0.1
100 k
BEEPOUT
TONE
R241 C371
100 k 0.1
220 k
J3
HSJ1122–010010
R515
1 k Q43
UNR9112J
VCC
AFON
Q42 2SB1132 Q
AFONOP
Q41
XP6501 AB
C336 470 P
R315
R244
TP76N00N–15F–10KA–2251
39 k
R245 68 k
8.2 k
R246
2
18 k
1
C335
3
C337
0.1
1 IC23 R283
1
100 k
LM2904PWR
R234 10
J4
BM02B–ASRS–TF
1
SP1
2 C324
100
J2
HSJ1456–01–220A
AFOUT
SP
CLONE
D28
R239
RB706F–40
15 k
S27
EC10SP16–47 2
8
6
4
C2
5
2 Q44
C1
4
1 UNR9210J
3
1
+5V
KS0
KS1
KS2
KS3
KS4
S21 S22 S25 S26
R291
R219
1 k
P0 P1 P2 P3 68 k R218
39 k 68 k
S3
R520 R217
SW–167
68 k
100 k
S23 S24 S7
UP 1 2 3
R353 1 k KS0
DTMF•Enc
S4 R354 1 k KS1
SW–167 S9 S10 S11 R355 1 k KS2
KS3
R356 1 k
4 5 6
DOWN
S13 S14 S15
7 8 9
* 0 #
S17 S18 S19
+5V
IC10
24LC64T–I/SN
4 5
VSS SDA
3 6
A2 SCL
2
7
A1 WP
1 8
A0 VCC
R272 100
Q45
UNR9113J
+5V
+5V
COM4
R349
COM3
1 k
SO 76
P30/TXD0
SI 77
P31/RXD0
SCK
78
P32/SCK0/SDA1
CLO 79
P33/SCK0/SCL1
CLI 80
P34/RXD1/SDA0
CIRQ
81
P35/SCK1/SCL0
S1 1 36 COM2
82
P1/S1 COM2 P36
S2 2 35 COM1 83
P2/S2 COM1 P77/TXD3
S3 3 34 S34 84
P3/S3 S34
P76/RXD3
S4 4 33 S33
85
P4/S4 S33 P75/TMO3/SCK3
S5 5
32 S32 S5C 86
P5/S5 S32 P74/TMO2/MRES
S6 6 31 S31 T5C 87
P6/S6 IC20 S31
P73/TMO1/CS7
S7 7 30 S30 R5C
P7/S7 S30 88
LC75834W P72/TMO0/CS6
S8 8
29 S29 TMUT 89
P8/S8 S29 P71/TMRI23
9
S9 28 S28 ULCK 90
S9 S28 P70/TMRI01
S10 10 27 S27 91
S10 S27
PG0/IRQ6
S11 11 26 S26
S11 S26 92
PG1/CS3/IRQ7
12
S12 25 S25 93
S12 S25 PG2/CS2
94
PG3/CS1
95
PG4/CS0
KRT0 96
PE0/D0
KRT1 97
PE1/D1
KRT2 98
PE2/D2
99
KRT3
PE3/D3
KRO 100
PE4/D4
DS3
LCD FX–2721 LCD
+5V
11 - 1
TONE
R151 C170
47 k 0.1
R154 120 k
IC6 IC6
LM2092PWR LM2092PWR
C172 C174 180 P
R152
0.022
TONE
330 k 0.047 R509
8
7 R216 10 2
5 4.7 k
R215
1
68 k
68 k
3
6 9
IC6
LM2092PWR
D6 MA2S077 R262 12 k
CSFT
C348
X6
22 P
CR–774
12.288 MHZ
R259
1 M
IC8
R258 S–80942CNMC–G9C
10
1 5
OUT CD
2
VDD
3 4
VSS NC
R264
4.7 k
BATV
RSSI
50 RSSI
P42/AN2
49 LVIN
P43/AN3
48
P44/AN4
47 KEY KEY
P45/AN5
46 CDEC
P46/AN6
45 SDEC
P47/AN7
44 BEEP
P96/AN0
43 SENC
P97/AN1
42
AVSS
41 DAST
P17/TIOCB2/TCLK
40 MRDF
P16/TIOCA2/IRQ1
39 MTDT
P15/TIOCB1/TCLK
IC22 MTCK
38
P14/TIOCA1/IRQ1
37 MDIR
HD64F2238BTF13 P13/TIOCD0/TCLK
36 MSCK
P12/TIOCC0/TCLK
(EMPTY)
35 MDIO
P11/TIOCB0/A21
PMFM
34
P10/TIOCA0/A20
33 OPT3
PA3/A19/SCK2
32 OPT1
PA2/A18/RXD2
31 OPT2
PA1/A17/TXD2
30 R352 1 k PLST
PA0/A16
29 R336 20 k REF
PB7/A15/TIOCB5
28
R337 R323
PB6/A14/TIOCA5
27 20 k 10 k
PB5/A13/TIOCB4
26 R338 R325
PB4/A12/TIOCA4
20 k 10 k
R339 R327
20 k 10 k
R340 R329
20 k 10 k
R341 R331
20 k 10 k
R342 R333
20 k 10 k
R335
10 k
R343
20 k
R344
20 k
+5V C131 0.1 +5V
IC13
R514
R510 R120
TC4W53FU 100 k
47 k 47 k
1 8 R93
2 7 33 k
3 6
C35
4 5
R519 0.0022
100 k
[F44G]
1 24
VIN1 VIN8
2 23
VOUT1 VOUT8
R81
MOD 3 22
VOUT2 VOUT7
4 21 18 k [F43G]
VIN2 VIN7 R512
5 20 100 k [F44G] 8.2 k
VDD GND
6 19
LD RESET
7 18
CLK VDAREF
R73 12 k
8 17
DI DO
9 16
VIN3 VIN6
BAL 10 15
VOUT3 VOUT6 IC14 AK2346
DEVT 11
14
VOUT4 VOUT5
TONC 12 13 1
VIN4 VIN5
R74 390 k AGNDIN
2
3 AGND
IC12
TXIN
4
M62364FP
TXINO
5
LIMLV
6
EXTLMIN
7
MOD
8
VSS
9
TCLK
10
TDATA
11
DI/O
12
RDF/FC
C308 22
IC6
C64 0.001
LM2092PWR
+5V
R156
ERJ2GE–JPW
4
V+
GND
R222
11
180 k
CENC0
R223
56 k
CENC1
R224
22 k
CENC2
CTCSS/DTCS
R210
R209
47 k 47 k
R213
13
4.7 k
14
12
IC6
R211
LM2092PWR
47 k
+5V
DUSE
R214
Q40
VCC 47 k
UNR9213J
CDEC
C315 0.1
R186 470
GND
+5V
VCC
MICMUTE
AFONOP
BEEPOUT
RXMUTE
DISCIN
R203
AFOUT
220 k REM
R288 CCS
CIRQ
4.7 k
SO
R204
SI
100 k
SCK
R205 100 k
VCC
+5V
NOTES :
A
B
S1
EVQ–PUL 02K
@compC
EMER
MONI
R513 C
R524 100 k
47 k
C130
R107
0.1
33 k
R119
24
C414
TEST 47 k
23
0.1
RXIN 22 C125
Q502 1
RXINO 0.0022
21
R114 82 k 2SK3019
RXLPFO 0.0027
20
RXAF
19
RXAFIN R523 1 k
18
EXPOUT
17
VDD
16 R106 1M
XIN
15
XOUT
14
DIR X5 CP4 R118
13
CR–765 33 k
SCLK
3.6864 MHZ 220 k
R273
3.3 k
SIGOUT
C360 0.1
R301 68 k
D
C223 0.1
IC19 LM2904PWR R182 R181
22 k 22 k
5
R183
7
22 k
6
IC19
LM2904PWR
3
1
2
R184
R185 470 k 100 k
C225 470 P
R97
1 k
J5
AXN330C038
30 1 PTTIN
2
29 PTTOUT
28 3 MICOUT
27 4 MICIN
5
26
25 6
24 7
CP46
23 8
SIGOUT
22 9
SQLC
21 10
20 11
12
19
18 13
17 14
15
16
VCC
+5V
Voltage line TX line
Contorol line RX line
E
*; Refer to "PARTS LIST."