Voltage Diagram - Icom IC-F310 Service Manual

SECTION 11

VOLTAGE DIAGRAM

¡ ¡ FRONT UNIT
LED type only
DS12 Q11 R78
56k
TX
LCD type only
R71
1k DS1
Q12
R79 LD-HU10140J
39k
1
RX
SEG1
2
SEG2
R72 DS13
3
470 SEG3
Q13
4
R80
SEG4
100k 5
R73 SEL SEG5
6
1.8k
SEG6
7
DS14
SEG7
8
Q14
SEG8
R81
9
SEG9
100k
R74 CH1 10
SEG10
1.8k
11
SEG11
DS15
12
SEG12
Q15
13
R82
SEG13
14
100k
R75 CH2
SEG14
15
1.8k
SEG15
16
DS16
SEG16
Q16 17
SEG17
R83
18
SEG18
100k
R76 CH3
19
1.8k SEG19
20
DS17 SEG20
21
Q17 SEG21
R84 22
SEG22
100k 23
CH4
R77
SEG23
1.8k 24
SEG24
25
SEG25
26
SEG26
27
SEG27
DS12- DS17 Q11- Q17
28
C92
2EC2422Cx6 2SC4081x6 SEG28
47p 29
SEG29
30
SEG30
31
SEG31
32
SEG32
DS8- DS11 33
COM0
SML-311YTx4 34
COM1
35
COM2
LIGHT ON :7.5V
LIGHT OFF:5.5V
R87
820
1
1
Q18
Q3
2SC4081 DTC144EU
S1
PWR
VOLUME
CHANNEL
S2 S3 S4 S5
S6 S7 S8 S9
P0 P1 P2 P3
R22
10
J1
8V
CLONE
TX:5.0V
R21
AFO
RX:0.2V
1k
PTT
to
MICE
MIC L1 1µ
MIC
GND
R20 1k
HANGER
5.0V
(LED type only)
SEG1 (LCD type only)
SEG2
SEG3
(LCD type only)
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14 SEG21
SEG15 SEG22
SEG16 SEG23
SEG17 SEG24
SEG18 SEG25
SEG19 SEG26
SEG20 SEG27
SEG21
SEG28
SEG22 SEG29
SEG23 SEG30
SEG24 SEG31
SEG25 SEG32
SEG26
SEG27 MTONE
SEG28 DTMF
SEG29
SEG30
SEG31 OPV3 R53 1k
SEG32 OPV2 R52 1k
COM1 OPV1
R51 1k
COM2 CTCIN
COM3 SD
LVIN
TEMP
VIN
8V
R47
Q3
EXB-V8V
DTA143ZU
(1kX4)
DIM
D6
MA8051
IC2 5.0V
S-80742SL-A6
3 2 1
C14 R4
0.47 100k
Q1
DIM
2SC4081
8V
4 5
POSW
R59 1k
R17
EXB-V8V
R43
(1kx4)
12k
KR0
X1 L3
KR1 CR-590 47µ
KR2
KR3
C18 R7
47p 1M
R18
470
KS0
R19
470 HANG
KS1
R58
47k
Q4
D2
DTC144TU
DA204U
CLON
AFO
R69 100k
PTTIN
D3
DA204U
MIC
HANG
D4
DA204U
2
Connect to IC1(pin 69 pin 75)
76
VCC P66/SEG15
77
PDO/SEG41 P65/SEG14
78
PD1/SEG42 P64/SEG13
79
PD2/SEG43 P63/SEG12
80
PD3/SEG44 P62/SEG11
81
PD4/SEG45 P61/SEG10
82
PD5/SEG46 P60/SEG9
83
PD6/SEG47 P57/WKP7/SEG8
84
PD7/SEG48 P56/WKP6/SEG7
85
PE0/SEG49/M P55/WKP5/SEG6
86
PE1/SEG50/D0 P54/WKP4/SEG5
87
PE2/SEG51/CL2 P53/WKP3/SEG4
88 IC1
PE3/SEG52/CL1 P52/WKP2/SEG3
HD6433875B20H
89
AVCC P51/WKP1/SEG2
90
TONEM P50/WKP0/SEG1
91
TONED PA0/COM1
92
VTREF PA1/COM2
93
AVREF PA2/COM3
94
PB7/AN7 PA3/COM4
95
PB6/AN6
96
PB5/AN5
97
PB4/AN4
98
PB3/AN3
99
PB2/AN2
100
PB1/AN1 P10/TMOW
5.0V
CPU5V
IC3
25LC160T-I/SN
ECS 1
CS VCC
2
SO HOLD
3
WP SCK
4
VSS SI
CSHIFT
R8
10
R55
6.8MHz
100k
3.2V
2.3V
1.4V
5V
C37
10
R33
68k
CTDA0
R27
R30 R31 R34
1 6
39k
10k 10k 27k
CTDA1
2 5
R35
10k
3 4 CTDA2
Q5
XP4601
BM
FRONT UNIT
MEASUREMENT CONDITIONS
DIGITAL MULTIMETER:50kΩ/VDC
OSCILLOSCOPE
50 KR0
NOTE;
49 KR1
48 KR2 R46 LCD type (F310/320)
EXB-V8V
47 KR3
LED type (F310S/320S)
(1kx4)
46 KS0 EXEN
45 KS1 EXST
44 DAST
43 PLST
42
R48
41
EXB-V8V
40
(1kx4)
39 DIMIN
38 DIM EXPTT
37 PWON
36 UNLK
35 COM1
34 COM2
Q19
33
COM3 DTC144EU
32
31
VCC LCD type
30
V1
29 4.9V
V2
28
V3
27
RFATT
VSS
3.9V
26
LED type
1.7V
R44
EXB-V8V
(1kx4)
PTT 8V
OPT1 CPU5V
OPT2
OPT3 OPINT
OPCS
OPCS BUSY
BUSY BEEPOUT
OPINT TONE
NOIS BEEP
DICSIN
R45
RFATT
EXB-V8V
(1kx4) NOIS
8 UNLK
7 EXEN
6 EXST
5 5.0V DAST
PLST
VIN
TEMP
MIC
5V
W2
BEEP
BEEPOUT
5V
R36 R37 R39
12k 12k 100k
Q6
2SC4081
R40
100k
R56
5.6k
11 - 1
:20MHz
CTCSS
4.0V
2.35V
0.7V
DTCS
4.2V
2.3V
0.4V
R71
1k (LED type only)
7.6V J2
40 39
5.0V
38 37 AFO
36 35 SI
34 33 OPT3
32 31 OPT2
30 29 OPT1
28 27 OPV3
26 25 OPV2
24 23 OPV1
22 21 PTT
20 19 PTTIN
18 17 DET
16 15 PWON
14 13 EXPTT
12 11 DIMIN
10 9 SO
8 7 SCK
6 5 SD
4 3 LVIN
2 1
to
MAIN UNIT
J1
connect
with W3
BEEP IS SET
27.5mV 70mV
0mV 0mV
-27.5mV -70mV
Q7
2SC4081
C82 R50
0.1 100k
R60
RV-150
(10KB)
Q10
DTC144TU
3.3V
1.9V
0.5V