Main And Vco Units - Icom IC-2720H Service Manual

10-2 MAIN AND VCO UNITS

MAIN UNIT(1)
HV
J2000
W2001
HV
GND
R2000
47k
13.77V
HV
IC2002
TA7805F
I O
G
EP2024
SP1
J2007 HV
+
-
R2102
4.7k
a
IC2001
S-80945CNMC-G9F-T2
J2005
1
OUT
2
VDD
3
b VSS
c
J2004
d
C2206
18p
Q2016
XP4213
1 6
2 5
3 4
IC2000
HN58X2464TI
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
VSS SDA
AFOUT
J2003
Q2018
DTC144EU
6 5
PSQL
DATA 4 3
DATAOUT
2 1
Q2019
PTTP DTA144EU
DATAIN
J2001
8V EP2000
MICU/D EP2001
EXTMIC EP2002
PTT EP2003
to Microphone MICE EP2004
MIC EP2005
GND EP2006
MICIN EP2007
J2006
CTHV EP2008
TXDATA EP2012
to CONTROL
RDATA R2278
unit J2
GND EP2013
MIC EP2010
MICE EP2011
13.7V
HV
5V
VCC
5VS
IC2003
8V
TA7808F
Q2000
2SB1132
I O
G
Q2002
R2105
2SA1588
NTCG20 R2161
TEMP
R2162
R2163
TX: 4.84V
D2048
RX: 4.79V
MA2S111
Q2003
DTC144EU
1
EP2015 2
EP2014 3
5 4
CD R2122 47k
5
4 6
NC
7
8
9
UMMUTE 10
11
12
MOD_SET_DATA 13
R2167 100 14
15
TX_MUTE R2169 330k 16
MIC_PTT R2170 100 17
SUB_SEL R2171 100 18
RPT_MUTE 19
X2001
C2057
CR-520 UTX_CTRL 20
68p
19.6608MHz VTX_CTRL 21
DTCS_SEL 22
23
R2172
24
R2088 100
1M 25
R2101
47k
R2100
R2109 R2108
10k P_PTT
4.7k 1k
P_MOD_MUTE
98_DATA
CM_MUTE
MIC_SEL
R2003
R_RSSI
1k
L_RSSI
P_SQL TEMP
REV_DET
R2191
100k
P_PTT
DATAIN
8V
R2116 1k
R2006
100k
R2004
1
HV
C2186
0.039
Q2028
R2007 4.7k
2SC4116
Q2014
XP4601
R2001 10k
WN_SEL
MATORIX_IN1
150k MATORIX_IN2
100
100
MATORIX_IN3
MATORIX_IN4
RES
XTAL
EXTAL
VCC1
MD1
MD0
NMI
STBY
VCC2(VCL)
KIN15/CIN15/A23/PA7
KIN14/CIN14/A22/PA6
IC2013
SCK0/P52
HD64F2144AFA20
RXD0/P51
TXD0/P50
VSS
WAIT/P97
EXCL/P96
IOS/AS/P95
HWR/P94
KIN13/CIN13/A21/PA5 P47/PWX1
KIN12/CIN12/A20/PA4 P46/PWX0
RD/P93 P45/TMRI1
IRQ0/P92 P44/TMO1
IRQ1/P91 P43/TMCI1
ADTRG/IRQ2/LWR/P90 P42/TMRIO/SCK2
R2035 100
R2036 100 R2034 100
R2040 100 R2033 100
R2166 100
R2174
100
R2173 R2019
100 100
EP2022
5VS
R2268 100
C2082 1
EP2023
R2120
27k [USA]
8.2k except [USA]
C2083 1
R2259
470k
R2016
2.2k
1 5
4
3
1 5
4 2
3
2
IC2006
TA75S01F
C2187
IC2014
0.1
Q2005
TA75S558F
2SC4116
C2188
1
HV
5V
VCC
5VS
8V
D2032 D2036 D2040 D2044
D2033 D2037 D2041 D2045
D2034 D2038 D2042 D2046
D2035 D2039 D2043 D2047
R2075
D2032-D2047 MA2S111
390
D2032: [EUR],[SEA],[EXP]
D2033,2036-2038,2041,2043: [KOR],[SEA]
D2034: [EUR],[ITR] D2035: [ITR],[KOR]
D2039: [KOR] D2040: [ITR]
D2042: [KOR],[EXP]
D2044: [EUR],[ITR],[KOR]
D2046,2047: except [EXP]
L400_SHIFT
R_RX800
Q2017
L_RX140
75 DTC144TU
P14/A4 L_RX220
74
P15/A5
R2177
73
100
P16/A6
72
P17/A7
71 R2137 100 R_AM
VSS CLONE_OUT
70 R2136 100 L_AM
VSS CLONE_IN
69 R2176 100
PB4/D4 L RX300 IC2009
68
PB5/D5 L_RX400 TC4S81F
67
P20/A8 1200_9600SEL 1
66
P21/A9 L_UNLOCK 2
65
P22/A10 3
64
P23/A11 R2128 100
63 R_UVCO_SEL
P24/A12
62 L_R5CTRL
P25/A13
61 AF_VOL_CK
P26/A14
60 AF_VOL_DATA
P27/A15
59
VCC1 R2124 100 IC2011
58 R_DET_MUTE
M62429FP
PB6/D6
57 L_DET_MUTE
PB7/D7 1
56 R_AF_MUTE VIN1
2
55 L_AF_MUTE VOUT1
3
54 GND
R2038 100 MM_MUTE 4
53 DATA
R2026 100 DA_STB
52
R2027 100 DA_CK
51
R2028 100 DA_DATA
5VS
IC2007
BU4066BCFV
1
I/O
RIPTMOD 2
O/I
P_MOD_MUTE 3
CLONE_IN O/I
4
Q2006
CLONE_OUT I/O
DTC144EU
5
FAN_CTRL CONT.B CONT.B
SUB_SEL 6
P_SQL CONT.C CONT.C
7
DTCS VEE
DTMF
L_WXALT
RPT_MUTE
R_WXALT
MM_MUTE
L_DTCS_IN
DTMF C2022 0.0033 R2107
L_SQL
R2264 R2048
R_DTCS_IN
4.7k 100k
R_SQL
IC2008
BU4066BCFV
1
I/O
2
C2085 1 O/I
1200_9600SEL 3
O/I
4
I/O
CM_MUTE 5
CONT.B
6
CONT.C
R2119
7
VEE
27k [USA]
8.2k except [USA]
Q2022
C2084 1
DTC144EU
R2117
R2051 100k
8.2k [USA]
Q2023 5.6k except [USA]
DTC144EU
R2118
8.2k [USA]
Q2007
5.6k except [USA]
DTC144EU
5VS
R2103 4.7k C2061 10
DATAOUT R2093
R2057 8.2k
DATAIN
AFOUT
Q2009
DTC144EU
10 - 2
BUS LINE1
BUS LINE2
HV
5V
5VS
8V
IC2012 C2044 R2077
LA4445
0.1 4.7
C2042 R2076
0.1 4.7
C2043 C2049
C2046 100
470 0.1
C2040 100
C2039
470
C2041
47
Q2010
2SC4213
R2056
33k
R2054
Q2008
R2053
2SC4213
33k
5
4
R2064
MAIN
10k
UNIT
Q2011
R2050
R2060 2SC4213 (2)
47k
33k
8
VIN2
7
VOUT2
6
VCC
5
CLK
14
VDD
13
CONT.A
12
CONT.D
11
I/O
10
O/I
9
O/I
8
I/O
47k MODIN
14
VDD
13
CONT.A
12
CONT.D
11
I/O
10
O/I
9
O/I
DATAMOD
8
I/O
2.2M
TX: 4.82V
C2066
RX: 4.77V
10
IC2010
BU4066BCFV
1 14
I/O VDD
2 13 VDETS
O/I CONT.A
3 12 UDETS
O/I CONT.D
4 11 VAFO
I/O I/O
5 10
CONT.B O/I
6 9
CONT.C O/I
7 8 UAFO
VEE I/O