Icom IC-F5220D Service Manual page 34

SECTION 11. VOLTAGE DIAGRAM
• FRONT UNIT
LNJ426W83RA
LNJ426W83RA
R7
LNJ426W83RA
470
DS3 DS2 DS1
LNJ426W83RA
LNJ426W83RA
LNJ426W83RA
R8
DIM ON 6.3V
DIM OFF 7.3V
470
DS6 DS5 DS4
LNJ426W83RA
LDTC114YE
LNJ426W83RA Q5
R9
1.2k
DS9 DS8 DS7
LNJ426W83RA
LDTC114YE
Q2
R12
Q1
2.7k
2SC4116
DIM ON 0.0V
DIM OFF 3.2V
AFVI
S1
KEY
KEY
S2 S3 S4 S5
P0 P1 P2 P3
KEY KEY KEY
KEY
S6
S7
UP DN
KEY
KEY
LDTC114YE
Q10
J1
8V
1
CLO R15
2
AFO 1k
3
PTT R76
4
MICE
5 L1 1k
MIC
6
GND 10U
7 R20
R16
CLI (HANG)
8
1k
0
R19
TX 0.0V
100k
RX 3.2V
Q96
DRC9114T0L
CPU3.3V
DS11
TAK-35877
LIGHT ON 3.2V
LIGHT OFF 0.0V
LIGT1
LIGT2
SEG10 SEG23
SEG24 SEG11
SEG9 25 12 SEG24
SEG25 SEG10
SEG8 26 11 SEG25
SEG26 SEG9
27 10
SEG7 SEG26
SEG27 SEG8
28 9
SEG6 SEG27
SEG28 SEG7
SEG5 29 8 SEG28
SEG29 SEG6
SEG4 30 7 SEG29
SEG30 SEG5
SEG3 31 6 SEG30
SEG31 SEG4
32 5
SEG2 SEG31
SEG32 SEG3
33 4
AFVI SEG1 SEG32
SEG33 SEG2
34 3 SEG33
SEG34 SEG1
COM4 35 2
COM0 SEG0
36 1
POSW
LSO
LINH
KR0 LCS
KR1 LCK
KR2
KR3
UP
DN
3.2V
PGIO2 (RXD0)
MD2
8V
FLASH
Q97
DRC9114T0L
47k
R785
47k
R784
CLO
AFO
IPTT
8V
R44
470k
CLI
C27
36P
IC7
R41 R781 R780
C810 5
3
4
0.1
15k 15k 8.2k
1
2
TA75S01F
11 - 1
R774
DN 1k
R773
UP
1k
1k
R772
DSIRQ
DMISO
IGSW
DSS
10k R702 MDNSDA
CPU3.3V 100k R703 GPSTXD
DB2S31400
CLI HANG
D5
3.2V
R777
NMI 100k
R776
SCK0 100k
SSO L14 LVIN LVIN
SCK L15 R782
100k
DAST M14
CP06S
CP13
R4 PLST
R643 S5C
R2 100k
LSO
P15 TSTB
AFVI AFVI
RSSI RSSI
TEMP TEMP
CP06S
CP14
P4 PLSW CP06S CP15
P3
LCS
100k
R778 IGSW
N14 RDAT
BATV BATV
VOXV
CP16
CP06S
CP17
CP06S
N4 UNLK CP18
CP06S
LINH
PGIO3
CRES
R640 100k
R639 100k
R652
TMUT M1
1k
ADS
CPU3.3V
R705 R704
1k
100k 1k
R765
Q95
LDTC114YE
R46
100
L2
1.0U
KS0
R769
1k
1k 1k
R767 R768
1k
R770
DSCK
40 39
DAST
38 37
TMUT AFON
36 35
NOIS DMOSI
34 33
RXC DSS
32 31
TXC ADS
30 29
UNLK NWC
28 27
PLST (TXD0)
26 25
DRES SCK
24 23
PLSW DMISO
22 21
HORN SSO
20 19
RSSI RORES
18 17
LVIN IGSW
16 15
TEMP MIC
14 13
BATV EPTT
12 11
DSIRQ PGIO4
10 9
(RXD0) PWON
8 7
CRES BEEP
6 5
CPU3.3V 8V
4 3
AFO
2 1
8.0V
J2
*: Refer to the PARTS LIST for the value and name of component.
R701 100k
R628 100k
R775 100k
NWC C15
CH2L
CBI3
CBI1
KS1 10k
MDNSCL R700
DSCK D6
RXD D7
RORES D12
DPDN D13
Q98
DRES D14
R633
CSFT
4.7k
CH4L
CH3L
CH1L
CRES CRES
R632
10k
19.66 MHz
2.3 Vp-p
C628
X51
15P
CR-912
R243
UP H1 10
DN H2
R244
1M
R637
1k
IC52
8 1
VCC A0
7 2
WP A1
R657 1k ESCL 6 3
SCL A2
R651 1k ESDA 5 4
SDA VSS
24LC1025T