Icom IC-F4261DT Service Manual page 34

SECTION 11. VOLTAGE DIAGRAM
• FRONT UNIT
EMER
30
CCS
29
CIRQM
28
CSI
27
CSO
26
CCK
25
OPT3
24
OPV3
23
TLED
22
RLED
21
20
MDET
19
VCC
18
17
5.00V
+5V
16
15
CLO
14
RES +5V
13
FSCL
12
FSDA
11
IEPTT
10
D701 PTTI IC702
9
DA271010 KR 1 SO 16
8 CS0
CLI FSCL 2 SCL 15
7 CS1
FSDA 3 SDA 14
6 CS2
CF20 LRES AFON 4 D0 13
5 VDD
EPTT EPTT LIGH 5 D1 12
4 D7
AF SPCON 6 D2 11
3 D6
CP701 MCIN MCON 7 D3 10
2 D5
8 GND 9
1 D4
M62320FP
J701
IC703
1 SO
CS0
FSCL 2 SCL
CS1
FSDA 3 SDA
CS2
KS0 4 D0
VDD
KS1 5 D1
D7
KS2 6 D2
D6
KS3 7 D3
D5
8 GND
D4
M62320FP
+5V
S701 S705 S709
1 2
KEY KEY
5.00V R703
100k
S702 S706 S710
4 5
KEY KEY
R704
100k
S703 S707 S711
8
7
KEY KEY
R705
100k
S704 S708 S712
0
* #
KEY KEY
R706
100k
9 10
IC709
1
OE1
2
A1
3
B2
4
GND
TC7WBD125AFK
Q713
LDTC144EE
Q714
LDTA144EE
+5V
*R714
IC704
Simple 1 5
GND NC
Multh 2
VIN
3 4
Select
VOUT NC
16 S-812C30AMC
15
TX 5.00V
14
13
RX 0V
12
11 Q704
10 LDTC144EE
9 PTTI
CP706
CP15S
TX 0V
RX 5.00V
S713
3 P0
KEY KEY
KS3 KS3 7.50V
2SB1132
Q707
VCC
S714
6 P1
KEY KEY
KS2 KS2
DA271010
R721
AFON
D704 10k
S715
9
P2
KEY KEY
Q703
LDTC144EE
KS1 KS1 SPCON
7.50V
AF
S716
LIGHT ON 7.50V
Q701
VCC
LDTC144EE LIGHT OFF
P3
KEY KEY LIGH
Q705
KS0
DTA114EU
D702
DTB123EK
KR
Q702
DAP222
LIGHT ON 5.00V
D703
LIGHT OFF 0V
LIGHT ON 0V
DAP222
LIGHT OFF 7.50V
28
+5V +5V
+5V
*EP701
*R749
R722 FSDA
0
8
VCC
7
OE2
6
B1
5 R717 FSCL
A2
0
CCS *R746
*R743
CIRQM
CSI *R701
CSO
CCK
LRES
OPT3
OPV3
+5V
TX 5.00V
RX 0V
LDTA144EE
DA271010
MCON
D705
Q710
R733
PTTI
100k
TX 5.00V
Q709
LDTC144EE
C731
RX 0V
R734 220P
100k R741
C740
6 Q708
7
MCIN
33k 0.1
5
NJM12904R
IC705
R742 C741
100k 0.1
22k R727
100
R738
8
V+ IC705
GND
4
NJM12904R
R747
10k
R752
R744
100K
10k
R745
R753
10k
120K
R748
R728
10k
47K
NJM12904R
IC705
3
R729 R739
1
2
15K 15k
0V
C735 390P
R740
LIGHT ON 7.50V
LIGHT OFF 0V 100k
*IC701
1 20
P3_5/SSCK/SCL P3_4/SCS/SDA
2 19
P3_7/CNTRO/SSO P3_3/TCIN/INT3
3 18
RESET P1_0/KI0/AN8
4 17
XOUT/P4_7 P1_1/KI1/AN9
5 16
VSS/AVSS P4_2/VREF
6 15
XIN/P4_6 P1_2/K12/AN10
*R772
7 14
VCC/AVCC P1_3/K13/AN11
8 13
MODE P1_4/TXD0
9 12
P4_5/INTO/RXD1 P1_5/RXD0/CNTR01
10 11
P1_7/CNTR00 P1_6/CLK0/SSI01
*R762 *R786
EMER
5.00V
+5V
TX 0V
RX 5.00V
Q712
RLED 1 5
2
MC701 TLED 3 4
DMC561040
TX 5.00V
EM6027P
RX 0V
EMIC
EPTT
CLO R766
47
47 R767
CLI
R768
RES 1k
MDET 1k R769
VCC R770
PRG21BC4R7MM1RA
7.50V
Q711
LDTC144EE
R760 1k
INSP-
INSP+
IC706
20 1
VCC1 GND1
19 2
NC NC
18 3
OUT1- OUT1+
17 4
IN1- MODE
16 5
IN1+ SVRR
15 6 C759 SP+
IN2+ SELECT
14 7 68
IN2- NC
13 8 C760
OUT2- OUT2+
12 9
68
NC NC
11 10
VCC2 GND2
TDA8547TS
C761
SP-
68
C762
68
*: Refer to the PARTS LIST for the value and name of component.
*R783
*R771 *R777
*R774
13 8
NC ZOUT
14 7
VS COM
15 *IC708 6
VS COM
16 5
NC COM
17
ACCELEROMETER
*C779
*R787
S717
EVQ-PUL
R773
330
R775
1.5k
INSP-
14
INSP+
13
12
EMIC
11
EPTT
10
CLO
9
CLI
8
RES
7
6
MDET
5
VCC
4
SP+
3
SP-
2
1 J704