Icom Ic-2820H Service Manual page 48

MAIN UNIT (3)
8V
C;7.85V
R8
VTX_C
L5V 1K
L9
VHFYGR VHFYGR
47N
VTX_C
UTX_C
UTX_C
Q13
UNR9213J
UT8
UHFYGR
DA3_STB
DA_STB
DA_CK
DA_CK
DA_DATA
DA_DATA
R_BPF3
R_BPF4
IC1
1 20
VSS GND
R_RX400 2 19
AO3 AO2
R_RX140 3 18
AO4 AO1
PL_U 4 17
AO5 DI
TX_MUTE 5 16
AO6 CLK
PCON_ U 6 15
AO7 LD
PCON_V 7 14
AO8 DO
UATTC 8 13
AO9 AO12
9 12
AO10 AO11
10 11
VDD VCC
M62352GP
R400_R5
UU1
T;0V
R;4.73V
UUI UUIF
F
VVI
HVC375B
F
5VS
C32
L6
1 6
0.5P
4.7U
10K
2 5
R873
3 4
L400_R5
5V
VU2
T;0V
R;4.05V
1 6
C38
R874
2 5
0.5P
L400_S
10K
4
3
R3
0
R800_R5
UU1
UAGC
VAGC R28
MA2S728
VU2
R14 LQW18AN6N8C00 82K
MA2S728 D3
D2 VV
15
UV
UUIF
D9
V220
MA2S077
MA2S728 D6
VU1
Q3
U NR9114J
L_RX140 L140_R5
L140_R5
R_RX140 R140_R5
VATTC
U NR9114J
Q5
L_RX220 L220_R5
Q14
L220_R5 2SC4738
UNR9114J UATTC
Q6
L_RX300 L300_R5
L_R5
L_R5
R_R5
R_R5
UNR9114J
VD5C Q7 VD5
Q8
UNR9114J
UD5C UD5
R_RX400 R400_R5
UNR9114J Q10
L_RX400 L400_R5
R800_R5
R_RX800
Q11
UNR9114J
R800_R5
R33 R59
L11 0.001
18 39 C81
47N
C87 R77
R47 7P
15 3P C123
22
Q26
Q22
2SC3357
2SC5085
M PZ1608S221A
B2B-ZR-SM4-TF
EP1
CHASSIS unit
FANC
J1
1
2
R44
10K D169
MA8075
R35
47
(375–550 MHz)
1.5P
C96 C114
0.5P
C97 1K
L21 0.5P L32
4.7U 4.7U
Q19 R94
3SK324
47
(375–550 MHz)
R38
C49
C100 C115
8P 0.3P 1.5P
Q20
3SK324
R;3.59V
R70
LQW18AN6N8C00
C53 C57 R40 82K D22
1P 1P 39 1SV308
Q18
2SC5231
Q23
2SC5624
(810–1000 MHz)
VT8
R105 R116
15 15
MA742
C164
0.001
D39
UT8
IC2
S-AU82L
AS100340
R106 L50
18
MA742
D42
R152
MMZ1608Y102BT
EP4 100
U NR9113J
R125 R133
R853
0 330K
Q31
PRF18
UHFLPF
T;0V
R;4.76V
5VS
L_R5
R_R5
L140_R5
VV
C187
VT;4.20V
UT;0V
0.5P
R;4.18V
33P
C188
0
2P
C133
R103
0.001
C148 L42
0.1U
R140_R5
UV
C182
0 0.5P
R101
D35
MA2S077
R856
100
V220
R;4.73V
J23
(174–260 MHz)
41-002AA-R
0.001
22
MA2S077 C167
J22
41-002AA-R
D36 R144
L300_R5
VT;0V VU1
UT;4.45V
R;4.41V
(260–375 MHz)
15
R143
Q29
3SK324
UD5
LQW18ANR15G00D
VD5
VT;7.81V
UT;0V
R;0V
0.001
C227
0.001
C212
VT;0V
UT;7.73V
R;0V
L61 D62
AS080440 L709CE
MA742
22K
C265
R166 15K
R178 0.001
D52
8V
R205
33K
Q36
UNR9113J
R877
C952 L69 L73
4P 12.1N
0 AS080440
R204
L164
LQW18ANR15G00D
10
(118–174 MHz)
C294
0.001
3SK318
Q33
T;0V
R;4.75V
LQW18AN82NG00D
C258
0.75P
L74
C285
33P
64N 8P
C236
8P C262
UATT
(118–174 MHz)
R199
2.2K
C234 3P
C255 D56
3.5P M A2S077
R192
100K
R;4.72V
C253
3.5P
R160 R191
100K 100K
C288
4P
VATT
UATT
10 - 4
AS080647
AS080547
L92 L96
AS080340
C296 C308 L108
6P 6P
100P
AS080747
L89
1.5P 1.5P
C337 C340
VT;0V
UT;3.90V
R;3.85V
6P
C309
Q40
2SC4738
Q37
3SK318
LQW18AN82NG00D
120
C295
J20
3008L-8P8C
0.001 R223
1
RL2
ATQ206SA
10K
R225
C300
220P
L79 D72
1U
1SV308
L82 L90 L93 L103 L106
57.2N 37.5N 45.5N 8.6N 18.3N