Icom IC-E2820 Service Manual page 49

MAIN UNIT (2)
HV
8V
5V
5VS
L5V To VCO
MOD_DA C;4.9V
MODSEL
R_LV
L_LV
VTX_C
UTX_C
AMOD
DA_STB
DA_CK
DA_DATA
DA2_STB
DA3_STB
L_LV
R_LV
L_LO_SW
R_VVCO_SEL
R_UVCO_SEL
VMMUTE
UMMUTE
L_VCO_SHIFT
PLLDATA
PLLCK
L_PLLSTB
R_PLLSTB
L_PLLSW
R_PLLSW
L_UNLOCK
R_UNLOCK
C;4.9V
Q43
L_R5C L_R5
UNR911NJ
Q44
R_R5C R_R5
UNR911NJ
Q45
R_AMC R_AM
UNR9114J
Q46
L_AMC L_AM
UNR9114J
L_R5C
R_R5C
R_AMC
R256 R;3.7V
L_AMC
6.8K
R400_S
C355
C358
R;0.8V
0.0039 0.0018
IC11
C367 R277 R283 R288
1
COM
4 3 2
0.033 39K 22K 12K IN H
3
VEE
R_RX800 5 2 4
GND
6 1 TC7W53FU
Q50
UNR9213J
R;1.9V
L_WN_SEL
100K
L_DET_MUTE
L_DA_SEL
R253
R;1.2V
R276 R278 R285
L_AFFILSEL
R_AFFILSEL
68K 68K 68K
IC13
0
1
100K COM
2
R246 R265 INH
L_DTCS_IN R293
3
VEE
4
10K GND
100K R282
TC7W53FU
R279 10K
L_WXALT
DAFOUT
VDET
UDET
C;7.9V
R257
6.8K
R_WN_SEL
C356 C359
R_DET_MUTE
0.0039 0.0018
R280
R_DA_SEL IC12
R284 R290
C371
1
COM
4 3 2
0.033 39K 22K 12K INH
3
VEE
5 2 4
GND
6 1 TC7W53FU
VAFO
UAFO
Q49
UNR9213J
R_DET_MUTE
R_AFFILSEL
R_DA_SEL
100K
Q42
R263
XP4601
3 4
R286 R294
R281
UDET
2 5
68K 68K 68K
R_WXALT
1 6
100K R270
R_DTCS_I 100K
L_SQL R249 10K
R295
L_RSSI
R_SQL
I
R_RSSI
LMV321IDCK
R810 5
IC53
1
C876
4
100K
3
10 EEE-S
2
R807
220K
IC8
24
1
VIN1 VIN8
R_SQL 2 23
VOUT1 VOUT8
3 22
VOUT2 VOUT7
4 21
VIN2 VIN7
5 20
VDD GND
6 19
LD RESET
7 18
CLK VDAREF
8 17
DI DO
9 16
VIN3 VIN6
10 15
VOUT3 VOUT6
11 14
VOUT4 VOUT5
12 13
VIN4 VIN5
M62363FP
L_SQL
R305
10K
R;3.5V
Q56
UNR9113J
8
VCC
7 Q53 FI1
CH0
6 UNR9113J LT450HW
MA2S111
CH1 C932 C930 D84 0.1
5
A I O
D82 0.1 0.1 C437
MA2S111
Q54
MA2S111 C933 C931 D85
UNR9210J
I O
D83 0.1
0.1 FI2 MA2S111
LT450EW
R;4.4V(MODE:AM)
R301
100
R328
C427
180K 0.01
Q55
XP6501
Q57
8 XP6501
VCC
7
CH0 R303 R306
6
CH1
C429
5
A 18K 1.5K
R310 22P
470K
R307 R317
C418
82K 10K 220P
C419
220P
470P
8
VCC
7
CH0 C402
6
CH1
5
A R302 R308 R315
0 470 0
L_SQL
L_RSSI
R329
0
R_SQL
R_RSSI
R296
10K
10 - 3
L_VCO8
GND
VMMUTE
L_VCO_SHIFT
C466 MOD
L_VCO_MO D PLLCK
PLLDATA
2.2 LREFCON
L_PLLSTB
L_R5C
L_2ndLo
L_LO_SW
8V
L_REF_MOD
R368
C453
1 MSVA 18K
REF_MOD
L_PLLSW
L_UNLOCK
L_LV
8V
R_UVCO_SEL
R_VVCO_SEL
R_MOD
UMMUTE
2.2 UMMUTE
R_VCO_MOD
C877
1 MSVA R298
R_REF_MOD
C394 18K
R_REFMOD
RREFCON
5VS
R_2ndLo
R_R5
R_UNLOCK
R_UNLOCK
PLLCK
PLLCK
PLLDATA
PLLDATA
R_PLLSTB
R_PLLSTB
R _ PLLSW
R_PLLSW
R_LV
R_LV
R_2ndLo
VT;0V
UT;4.6V
R;4.7V
L_R5
0.001
0.01
C467
R399
C472
Q66 2
330
2SC4406 4
R;4.4V(MODE:AM)
R351 UNR9113J
Q69 UNR9113J
100
Q71
Q70
R376
C471
U NR9210J
180K 0.01 D93
M A2S111
Q63
XP6501 Q67
XP6501
R352
C477
1.5K D94
22P
R358 M A2S111
470K C487
0.1
C486
0.1
R372
C475
Q59
UNR9213J
82K 10K 220P
R388
470P C476
C459
220P
IC16
1 8
COM VCC R367
2 7
INH CH0
3 6
VEE CH1 0 R375 R389
4 5
GND A
470 Q117 0
TC7W53FU R811 C884
0.1
3.3K
UNR9213J
MAIN UNIT (4)
(PLL circuit for Left band)
R140_R5
R800_R5
R400_R5
MAIN UNIT (5)
(PLL circuit for Right band)
100K
C868
R444 R447 R453
0.01
220 220
617DB R790
IC19
FL-408 1 6
G1 G2 100
2 5
D1 S1
3 4
R416 R791
OUT GND C507 C514 D2 S2
3
GND IN
1 SPM5001
0 0.001 L122 100
12P
FI5 C869
0.01
R;3.4V
FI3
LT450HW
C927 C926 D95
I O
0.1 0.1 MA2S111
FI4
LT450EW
C929 C928
I O
0.1 0.1 D96
MA2S111
VT;4.7V
C495 UT;0V
R;4.6V
0.1
0.001
FL-409
C517
0.01
R794 Q75 C523
R439
2SC4406
OUT GND R452 C548
22K 2 3
220 GND IN
4 1
0.01
0
JTB450C24
X3 FI6
R415
3.3K
10 MSVA
HV
8V
L5V L5V
5V
L5V
VHFYGR
VHFYGR
L_RXLO
L_RXLO
GND DAN222
VTX_C
L220_R5
L_VR5
UTX_C
L_UR5
L140_R5
D112
DAN222
L300_R5
L400_R5
D113
5VS
R140_R5
R800_R5
R400_R5
R_Lo
5VS
UT8
UT8
UHFYGR
UHFYGR
DA_STB
DA_CK
DA_DATA
DA3_STB
L_R5
L127
C555
VVIF
0.1
C556
UUIF
0.001
617DB
5VS
R_R5
R400_S
5V
UAGC
VAGC
L140_R5
R140_R5
R464 R467
L220_R5
220 220
L300_R5
L_R5
R_R5
R400_R5
L400_R5
R_RX800
IC20
1 6
G1 G2
R800_R5
2 5
D1 S1
3 4
D2 S2
SPM5001
VAGC
UAGC