Icom IC-F8101 Service Manual page 73

• MAIN-A UNIT (6/6)
PA(non switvhed 13V)
HV
IC1801
S-812C50AUA
R1815
I O
PA(switched 13V) L1802 33 G
14V
HF50ACC322513
SW ON=4.8 V
SW OFF=0 V
8V
VLED
R1824
PA(Power SW)
PWS
220
5V
MAIN(To 5V REG)
R1825 0
MAIN(RX SW) R8V
R1826 0
MAIN(TX SW) T8V
VBUSK R1827 VBUSK_8
To DSP-1 VBUSK
0
To DSP-1 MODPTT
R1830 1k
REF
R1831 1k
MAIN RF(ALC) FOR
R1832 1k
R1834 1k
PA TEMP
TKEY
R1836
DSP BEEP
1k
R1823
PTT
1k
R1814
Q1801
2SC4116
47k
ACC CWK
R1806 1k
TO FRONT RXD
R1807 1k
38400bps TXD
J1801
1
FZBUSY
2
CLK1
3
EXRXD_8 EXRXD_8
4
WR
FLASH Writer 5
EPM
6
7
RESET
8
CNVSS
9
EXTXD_8
10
CP1907
CP05S
USB (ACC) 3.3V
EXRXD_8
TSTART
TSTART
TCON
TCON
TX=4.9 V
RX=0 V
TX=0 V
RX=4.7 V
TO DSP R1811 1k EXRXD_8
EXRXD
R1812 1k EXTXD_8
EXTXD
R1813 1k GPTXD_8
GPTXD TX=0 V
R1809 1k GPRXD_8
GPRXD
RX=6.5 V
H5 C1836
IC1805
1 16
4 VDD
2 15
2 3
CP1812 CP1813
3 14
0 1
4 13
CF20
CP08S 7 B
5 12
9 C
6 11
5 D
IC1804 7 10
6 A
1 8 8 9
VSS 8
2 7
CD4028BNSR
3 6
CP05S
4 5
CP1826
TC7W04FU
PWS_8
R8V_8
T8V_8
VBUSK_8
MODPTT
REF_8
FOR_8
DCV
TEMP_8
TKEY
BEEP_8
1
2
TCON 3
4
TSTART
5
EXRXD_8
R2019
6
CNVSS 7
10k
8
9
C1826 12P
RESET 10
11
12
13
C1827 12P 14
DRX 15
16
17
18
DRFS 19
DRX5 20
DCL5 21
22
DTX5
HSK5 23
3.3V DTFS 24
25
IC1818
1 24
VCCA VCCB
2 23
DIR VCCB
3 22
A1 G
4 21
DRXD
B1
A2
5 20 HSK0
A3 B2
6 19 VSQL_8
A4 B3
7 18 CWST_8
A5 B4
8 17
ALE2_8
A6 B5
9 16 TRFD_8
A7 B6
10 15 DSHS_6
A8 B7
11 14
GND B8
12 13
GND GND
TC74LVX4245FS 3.3V to 5V
VSQ5
DSHS5 CP1908
CP05S
R1968
1k
TX=6.8 V
RX=0 V
EXRE
Q1803
DMG564010
T8V_8 T8V 8V
3 4
TXS TX
2 5
1 6
C1819
0.01
RXS Q1804
IC1802 DMG564010
1 5 R8V_8 R8V
2 3 4
3 4 RX
2 5
TC7S04F
1 6
11-8
C1841
0.1 0.1
IC1810
CP05S
1 8
CP1824
A0 VCC
R2024 47k 2 7
A1 WP
R2025 47k 3 6
A2 SCL
4 5
R2026 47k
VSS SDA
R1EX24512BSAS0I#K0
R2022
47k
C1864
0.1
IC1806
R5F36CAMDFB
R1995
0
DTC114EU
C1839 0.1
R1858 100k
R1864 R1867
C1840
IC1807
Q1805
1 5
0.1
1k 220k 2SC4116
2
3 4 DSKY_6
TC7S08F DRES
CP1827
IC1808
1 5
OUT NC
CP05S
2
VDD
3 4
VSS NC
S-80842CNMC
ECK
EDT
5V
IC1815
Vcc
11
Ao11
MCK 12
Ao12
13
Do
75 MDT ST7 ST7 14
LD
74 MDT 15
CLK
73 16
DI
72 17
RTCIRQ
Ao1
71
PWS_8 18
Ao2
70 A0 19
GND
69 A1 20
68 A2 D7 R2A20169SA
R1875 220k
67
A3 D6
R1876 220k
66 A4 D5
R1877 220k
65 A5 D4
R1878 220k
64 A6 D3
R1879 220k
63
A7 D2
R1880 220k
62 D1
R1881 220k
61 A8 D0
R1882 220k
60
59 A9 A2
R1991 220k
58
A10 A19
R1883 220k
57 A11 A18
R1884 220k
56 A12 A17
R1885 220k
55 A13 A16
R1886 220k
54
A14 A15
R1887 220k
53 A15 A14
52 A16 A13
R1889 220k
51 A17 A12
R1890 220k
A11
R1891 220k
A10
R1892 220k
A9
R1893 220k
A8
R1894 220k
A7
R1895 220k
A6
R1896 220k
A5
R1897 220k
A4
R1898 220k
A3
R1899 220k
A1
*R1900
A0
*R1901
IC1812
L1804
A11 1 32 RD
A11 OE
A9 2 31 A10
10U A9 A10
A8 3 30 CS0
A8 CS1
Q1806 4
A13 29 D7
A13 DQ7
WR 5 28 D6
WE DQ6
Q1811 6 27 D5
CS2 DQ5
2SA1586 A15 7 26 D4
A15 DQ4
8
25 D3
VCC DQ3
9 24
NC GND
A16 10 23 D2
R1872 A16 DQ2
J1802 A14 11 22 D1
A14 DQ1
12
HU1632 A12 21 D0
A12 DQ0
2.2k
13 20
A7 A0
A7 A0
A6 14 19 A1
A6 A1
18
A5 15 A2
CP1808 A5 A2
A4 16 17 A3
A4 A3
CF20OPEN
R1LP0108ESA
IC1817
1 20
ENA VCC
2 19
A1 ENB DRFS_3
3 18 (DAS) IC1819
YB4 YA1
4 17 1
A2 B4 GND FOUT
CF20
5 16 2
DCLK
YB3 YA2 CP1809 NC NC
6 15 3
A3 B3 DSA NC
7 14 DTXD ECK 4
YB2 YA3 SCL NC
8 13 EDT 5
A4 B2 SDA /IRQ
9 12 6
DTFS_3
YB1 YA4 /BM NC
CP1810
10 11 7
GND B1 FOE VDD
R2002 CF20
SN74AHC244PW RX-8571SA
5V to 3.3V (FOE) (BM)
10k R2003
RTCIRQ
0
*: Refer to the PARTS LIST for the value and name of component.
3DST
3DST
1DST
1DST
MDT
MDT
MCK
MCK
EXRE
BST
BST
ST8
ST8
ST9
ST9
DT
DT
CK
CK
STR
STR
ECK
ECK
EDT TO DSP
EDT
1CNO
*R2005
A0
*R2006
A1
ICCV
VrefU AUXG
10
Ao10 VCT5
9
Ao9 VCT4
8
Ao8 DRVC
7
Ao7 ID4V
6
Ao6 ID3V
5
Ao5 ID2V
4
Ao4 ID1V
3
Ao3 REFV
2
VrefL POCV
1
DSHS_6 R1915 220
DSHS
DSKY_6 R1943 220
DSKY
CWST_8 R1917 220
CWST
ALE1_8 R1918 220
ALE1
ALE2_8 R1919 220
ALE2
TRFD_8 R1920 220
TRFD
VSQL_8 R1921 220
VSQL
3.3V
R1914
100k
2
R1926
1
FANV
3
IC1814 470
NJM2904V
8
C1851
V+
GND
0.0022
4
R1925
IC1814
560k
NJM2904V
R1911 10k
6
R1931
7
R1912 10k
5
4.7k
IC1814
NJM2904V
R1932
IDV
0
ICH R2037
ICL
RL1
0
RL1
R2038
(FOUT)
CP1811 0
CP06S
MP1010
14
13
12
2590
11
10 DRES
DRES
9
DRFS_3
L1818 DRFS_3
8 DCLK
DCLK
DRXD TO DSP
100U DRXD
DTXD
DTXD
HSK0
HSK0
DTFS_3
DTFS_3