Voltage Diagram; Main Unit - Icom IC-F43GT Service Manual

SECTION 11

VOLTAGE DIAGRAM

11-1 MAIN UNIT

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