Icom IC-2730A Service Manual page 47

• MAIN UNIT (2/8)
HV
8V
R_UAGC
R_UR8
PCON_V
PCON_V
PCON_U
PCON_U
R_UR8 C27
R_UR8
L_UR8 R_URF
L_UR8
15P
R_VR8
R_VR8
L_VR8
L_VR8
8.12V
8VS
L_UAGC
L_UR8
C28
L_URF
10P
D1
R_VAGC
R_AGC
DB2S31400
R_UAGC
R_VAGC
R_VR8
L_VAGC
L_AGC
L_UAGC
R_VRF
Q10
R_UR8
R_UR5C
LDTA114YE
LDTC144EE
Q11
L_UR8
L_UR5C
LDTA114YE
Q2
L_VAGC
L_VR8
L212
LDTC144EE
Q14 L_VRF
R_VR8
R_VR5C
LDTA114YE C885
Q5
LDTC144EE
Q15
L_VR8
LDTA114YE
Q6
4.99V
5VS
DA_STB1
DA_CK
DA_DATA
R:4.70V
T: 0V
R:7.83V
L100 C63 R:4.63V
10
0.22U
8P Q17 R:2.52V
R35
R:1.16V
3SK293
R:4.70V
T: 0V
R:7.83V
L102 C65 R:4.62V
10
0.22U 8P Q18 R:2.51V
R36
C96
R:1.15V 6P
3SK293
T: 0V
R:7.89V
R:4.72V
0.5P
C46 C69 C84
15P 0.001
Q19
3SK293
R:1.17V
C70
33P
T: 0V
R:7.89V
R:4.68V
0.5P
15N C47 C71 C86
15P 0.001
2P
Q20
3SK293
R:1.18V
33P
C74
MMZ1005Y102CT
EP6
Vcc VrefU
TX_MUTE 11 10 RBPF1
Ao11 Ao10
FANC 12 9 RBPF2
Ao12 Ao9
13 8
RBPF3
Do Ao8
14 7
RBPF4
LD Ao7
15 6
RATTC
CLK Ao6
16 5 LATTC
DI Ao5
LBPF1 17 4 LBPF4
Ao1 Ao4
LBPF2 18 3 LBPF3
Ao2 Ao3
19 2
R262 GND VrefL
20 1
100k
IC1 R2A20169SA
10-3
D35
DB2S31400
U-R (375-550)
L99
C139 C147
0.22U 3P 3P
D36
DB2S31400
U-L (375-550)
L101
C140 C148
0.22U 3P 3P
R80
1.8k
D37
DB2S31400
R:4.66V V-R (118-174)
10 R:2.54V
R53 0.75P
R268
C103 C125 L32 C141 C152
10P 47N
0 8P 0.001
33P
C126
D38
DB2S31400
V-L (118-174)
R:4.68V
10 R:2.55V
R54 0.75P
C104 R269 C127 C142 C153
10P 0
8P 0.001
33P
C128
R75
Q21
2SC4738
47k
2SC4738
R76 Q22
47k
R:5.41V
UHF
R:2.96V
R:5.35V 10
R97
Q23
C182
3SK293
R:1.65V
0.001
R:6.68V
VHF
R94
R:3.04V
0 R:4.79V 10
R106
Q24 C188 C197
3SK293
R:1.80V 220P 18P
ATTOFF:0V
ATTMAX:1.48V
ATTOFF:0V
ATTMAX :1.48V
*: Refer to the PARTS LIST for the value and name of component.
HV
8V
FANHV
R123
0