Rf Unit - Icom IC-7400 Service Manual

12-7 RF UNIT

RF UNIT 4 3 -7.55V
W532 W536 5 2
L290
W533 W537 LR-358
C542 C544 C546 C548 6 1
47p
C143 47p 47p 47p
J121 47p
from VRX Q541 UMD3N
PA unit 0V 7.7V EP549 -8V
D121 D122
P601(J601) L502 R8VL R8VL
1SS302 1SS302
92nH W502 R506 27 C513 1.5p C517 0.75p C521 0.001
C500 L506
Q502 92nH
100p 3SK177
40.9mV R509
100k
Q501
C290 R289
DTC114EE
C122 0.001 0.1 1k
L121 R122 C146 C528
39nH 0.001 0.001
330
C123 0.001
4.35V
D123 B9R
Q121 MA77
DTC114EE L122 R124 EP504 TNV2
1.2µH 470
5.0mV PR3S 0.706V EP502 PR3S
EP503
TNV1 TNV1
D124 R123 47 L129 R8V
MA77 1.2µH EP501 EP150
8VL
5V D181
MA77
IC151 D162 D163 T8V
C155 R163 4.7 R164 4.7
µPC1678G MA77 MA77 L151 -8VL
0.1 220µH
8 1
VCC IN D182
7 2 R153 MA77
GND GND C154 D161 R155 D151
6 3 0.1 MA77 18 18 1SV263
to J151 R160 10 W151 GND GND C171
YGR TXO 5 4 R162 R156 0.1
PA unit OUT GND 1k 330
P1(J1)
C157 P.AMP1 ON
0.1 D3 C153 9.99V
0.00V
MMBV3700LT1 0.1
PRE1
Q163 Q161
TX: 3.80V DTC114EE
D164 DTA114EE
Q162
DAN222
C2 DTC114EE
J1 R1 390 0.1 D165
from HRX DAN222 L14 R15
CTRL unit 220µH 470
P2(J2)
TX: 0V C5 0.0027 C6 0.0068
D4 RX: 10.77V
MMBV3700LT1
Q1 Q2 L11 L12
L1 L3 R12 C17 D11 P.AMP2 ON
DTC114EE DTC114EE 82 0.1 4.7µH 6.8µH MA77 10.2V
220µH 5.6µH
C13
390p
W2 R3 10 R6
C16 470
R2 0.22 8VL
56
PRE2
EP4
R7 B0 POFF
1.5k
T8V
RL1
AHY103 TX: 13.37V R5 R8V
4.7k L213
D91 RX: 74.8mV EP5
MMBV3700LT1 EP120 LR-395
EP6
ATTC
L92 L93 L94 C97 C98 D92
0.21µH 0.14µH 0.14µH 47p 47p MA77
L22 C23 D22
C90 C95 10µH 0.001 MA77
18p 18p D102
MA77 EP548
D21 D112
C93 MMBV3700LT1
18p MA77
B8 D111
MMBV3700LT1
B1
L102 C103
0.22µH 68p C112 C113 C114 C116 C117 R8VL
2
0.001 7p 0.75p 0.75p 7p 14V
3 1
D101
V3S
MMBV3700LT1 4 EP7
R8V
8VL
IC161 C118 EP9
TA4001F 0.0047 5V
T8V
D81
MMBV3700LT1 B8W 14VL
C110
L82 C83 D82 0.1
1µH 39p TX: 0.18V
MA77 B9T
RX: 7.96V
C109 B0 R335 10
0.1 L52 C53
D42 D52 B1 R336 10
MA77 2.2µH 150p MA77
B2 R337 10
B3 R338 10
D51 B4 R339 10
MMBV3700LT1 D62
D41 MA77 B5 R340 10
B7 B6 R341 10
MMBV3700LT1
B7 R342 10
L42 C43
2.7µH 300p
D61 B4
MMBV3700LT1
L62 C63
2.2µH 68p
D31
MMBV3700LT1 B3
C33
L32 B8 R351 10
3.3µH 0.001 B8W R352 10
D71 B5 B9R R353 10
MMBV3700LT1
B9T R354 10
L72 C73 D72 PRE1 R355 10
1.2µH 68p
MA77 PRE2 R356 10
POFF R357 10
ATTC R358 10
D32
B2 EP358
MA77
Frequency(MHz) Selected
B0 0.03000∼ 1.59999 12.00
B1 1.60000∼ 1.99999 12.00
B2 2.00000∼ 3.99999 12.00
B6
B3 4.00000∼ 7.99999 12.00
B4 8.00000∼ 10.99999 12.00
B5 11.00000∼ 14.99999 12.00
B6 15.00000∼ 21.99999 12.00
B7 22.00000∼ 29.99999 12.01
B8 50.00000∼ 53.99999 9.81
B8W 54.00000∼ 60.00000 9.80
B9R 108.00000∼174.00000 10.54 -8V
B9T 144.00000∼148.00000 10.55
12 - 7
W251 W254 W256 W255 W257 J262
R263 270 R262 18
2LO
L288 D272
0.15µH R261 270
D271 1SV271 L272 0V
L289
HSB88WS LS-424 Q271
LR-358 C292 56p
2SK882 L251 L252 D261
C272 L271 D251 LS-540 L261 L262 L263 from/to MAIN
R279 LS-483A HSB88WS J261 unit J250
390 0.001 0.56µH MA77 FI231A LR-317 LR-395 0.68µH
2IF
FL-315
C296 7p
C263 P261
D252
68p
R273 150 MA77
C312 R308 R307
0.0047 47 470 W304
L286 L285 C286
56nH 39nH 0.1 W305
W306
C288 D136 D137
6p MA77 MA77 D302 C318 D303 R316 L305 L304 D305 C305 R303 0.976V
W307
MA77 0.001 MA77 33 33nH 22nH MA77 0.001 4.7k
D211 C309 C307 Q301
MA77 D301 D306
D304 2p 6p 2SC4673
MA77 MA77 MA77
L211,L212
1.164V 9.4V 0.25-1.9-13TL
L181 Q181 L182 D183 L210
LR-395 2SK2171 4.7µH MA77 60nH L211 L212
L184 EP303 R305
LR-408A
47
C212 0.337V
L183 C234 EP305 L253
4.7µH D184 100p 33p L307 L306 EP301 D253
MA77 LS-540 L242
C181 Q182 C214 68nH 47nH C328 MA77
FI231B LS-484B
0.1 2SK2171 15p 0.001 FL-315
C316 C314
D254
5p 12p
MA77
1.164V 9.4V
R186 100
R194 W302 W303
C192 0.1 R192 680 C193 0.1 C195 0.1 1LO
39 C173 D171 EP302
10p MA77
IC191
C201
µPC1658G
C174 220p W201
8 1 0.1 MKR
BYPS GND
7 2 R241 47 1.06V 2.68V 11.43V
BYPS SETE C310 0.001
6 3 D172 11.8V C241
IN OUT MA77 Q241 L241
5 4 0.0047 3SK131
SETC VCC W231 LS-484B
C172 0.1 C229
L192 100µH
1.23V 12p
P.AMP OFF Q231
C245 W221
10.1V 2SK2171 0.0047
1.03V
W222
R212 4.01V R248 R249
W223
560 Q211 2SK1740 10.81V 47 2.2k
W224
EP242
C222 L215 14V
C217 R215 C247 W225
470 10p LS-544 R8VL Q243 Q242
0.1 DTC114EE 0.0047
R8V DTA114EE
C220
0.0047 11.76V V3S
L214 V3S
0.1µH
C218 0.1 C221 ALC
0.1 L216 1µH
0V 5V_CAL
R213 C225 Q212 C224
560 EP304
0.001 2SK1740 0.1
0V
3.98V 10.81V
J401
Q328 L401
100µ
DTC114EE EP401
V3S D307
R8V DAN222
8VL
EP8
5V
T8V
DRIV
L5
7.88V 4.99V TX: 7.95V IC323 IC321 C321 0.1
100µH
RX: 0V TD62783AF BU4094BCFV 16
EP306
18 1 B0S 4 1
01 IN1 Q1 STR
17 2 B1S 5 2
02 IN2 Q2 D
16 3 B2S 6 3
03 IN3 Q3 CLK J2
15 4 B3S 7 15
04 IN4 Q4 OE
14 5 B4S 14 RMCK
05 IN5 Q5
13 06 IN6 6 B5S 13 Q6 RMDT
12 7 B6S 12 RBST
07 IN7 Q7
11 8 B7S 11 RDRS
08 IN8 Q8
10 9 DRIV
GND VS L6 11.81V
100µH Q303 9 RSKY
R325 DTC114EE QS
10 RTXS
4.7 -132mV QS
TNV1
C327 Q302 8 TNV2
0.001
DTA114EE AGC
ALC
IC324 IC322 GND
TD62783AF BU4094BCFV 5V
18 1 16 GND
17 01 IN1 2 B8S 4 1 R8V
02 IN2 Q1 STR
16 3 B8WS 5 2 GND
03 IN3 Q2 D
15 4 B9S 6 3 T8V
04 IN4 Q3 CLK
14 5 R321 10k PR1S 7 15 GND
05 IN5 Q4 OE
13 6 R322 10k PR2S 14 8V
06 IN6 Q5
12 7 PR3S 13 GND
07 IN7 Q6
11 8 ATTS 12 14V
08 IN8 Q7 CP15
10 9 11 -8V
GND VS Q8
R324 Q324
DTC114EE 9
10k QS
10
QS
1.89V
8
-7.63V
Q325 Q323 EP10 EP11
DTC114EE
0V
-8V
1LO
MKR
8V 8V
5V 5V
CLK CLK
L1201
R1202 1812CS.
0.674V 2.26V
R1101 2k 47 122XKBC
R1147 R1139
220 47k
R1102
2k
1.941V
C1122
L1203
0.0047
R1104 Q1103 1812CS.
2k 122XKBC
2SC4081
C1161 0.0047
R1106
2k C1162 0.0047
L1221
R1108 C1163 0.0047 R1222 1812CS.
2k 47 122XKBC
C1164 0.0047
R1110 1 75
2k VSS ETCO0 C1165 0.0047
2 74 1.938V
SYSCLKO ETCO1
3 73 L1223
D255 VDD ETCO2 C1166 0.0047
R1112 4 72 1812CS.
MA77 2k VDD VSS 122XKBC
5 71
VSS ETCO3 C1167 0.0047
6 70
R1114 DA0 ETCO4
7 69
2k DA1 VSS
8 68
DA2 ETCO5
9 67 L1241
R1116 DA3 ETCO6 R1242 1812CS.
10 66 C1141 0.0047
2k VSS ETCO7 47 122XKBC
11 65 C1112 0.1
12 DA4 VSS 64 C1111 0.1
DA5 VDD
R1118 13 IC1101 63 C1110 0.1
2k DA6 Q4MA
14 SC-1246A 62 1.946V
DA7 Q16MA
15 61 C1191 0.1 L1243
VSS VSS
R1120 16 60 1812CS.
2k VSS FCK 122XKBC
17 59 5
DA8 RC
18 58 1
R1122 DA9 REF_OSC 4
19 57 2
2k DA10 VDD
20 56 IC1102
DA11 PDTRI 3 TC7S08F R1142
C1102 0.1 21 55 D1241
R1124 VDD VSS 1k
C1103 0.1 22 54 ULD KV1470
2k TE1 PD0
C1104 0.1 23 53
TE2 VD0
24 TE3 PD1 52 R1262
FI1101 25 51 R1138
CFEC10.8MD11 VDD PD2 15 47
C1105 0.1 1.923V
W243 C1106 0.1 L1263
C1107 0.1 1812CS.
122XKBC
C1108 0.1
R1148
W242 C1109 0.1
1k
LDRS
0.651V 2.32V 2.48V
W241 R1159
D1261
CP1101 1k
DIVOUT KV1470
R1127 R1128 C1118 C1120 C1119
100 47k C1155
0.1 0.1 0.0047
47p
Q1101 Q1102
2SC4081 2SC4081 0.207V
5V 2V
8V
Q1051
2SC4081
R1303 100 R1304 150
R1308 R1309 C1311 R1311
100 220 0.0047 15
7.49V
[KEY]
C1301 C1304 -0.602V Q1301
33p 150p 2SK210
0.303V
C1310 R1307
D1302 10p 47k
5V_CAL L1301 HSM88AS
LB-343
CLK 3.11V
5V
C1308
8V Q1302
150p
D1303 HSM88AS 2SC4081
0.645V
5V_CAL
CLK
5V
J1001 8V
CON2 R1000 1k CON2 Q1003
PCK R1002 1k PCK 4 3 UMD3N
PDAT R1003 1k PDAT
to
PST5 R1004 1k PST5 5 2
MAIN
unit PST4 R1005 1k PST4
J100 PST3 R1006 1k PST3 6 1
R1904
PST2 R1007 1k PST2
PST1 R1008 1k PST1 47k
LDRS R1009 1k LDRS
D1003
GND DAN222
to
MAIN UNLC UNLC
unit GND 0V
J160 CP1012 EP1010
GND EP1031
5V
5V R1924
5V D1004 1k
7.88V
GND R1020 47k DAN222
8V
CP1013
8V
7.92V
GND 13.63V
L1908
14V CP1014 EXCCL3225U
14V
FCNT
W1001 W1002 W1003 W1004
1LO
MKR
8V Q1521 108.00000-174.00000 MHz
7.78V
5V UMD3N
4 3
0.030000
-7.99999 MHz L1401
4.7µH 0.01V C1411 5 2
C1203 0.963V L1402
R1405 3.3k 0.0047
0.0047 V1AS EP1201 LR-317 D1401 R1407
C1206 1.5p 1SS315 47 W1407 6 1
W1408
L1204
Q1201
2SK508 10µH L1406 R1418
D1403 C1408 18
1SS315 0.0047 0.68µH
C1202
100p 10.6mV
Q1561 0.03000-29.99999 MHz
0.706V Q1401 7.78V
UMD3N
2SC4426 0.1V
Q1202 4 3
2SC4213 8.00000
-21.99999 MHz
DBLS 5 2
C1223 1.018V L1224
EP1401
0.0047 V2AS 10µH EP1221 L1408 Q1402
100µH DTA114EE 6 1
C1226 1.5p D1402
W1404
Q1221 MA77
2SK508
W1405 C1412
C1425 C1429 L1410 C1426
100p 100p 0.0047 39nH 0.0047 Q1581
C1222 UMD3N
330p 11.2mV
C1423 15p 4 3
0.705V L1412
0.18µH
Q1222 5 2
2SC4213 22.00000
-39.99999 MHz
6 1
C1243 0.965V L1244
0.0047 V3AS 10µH EP1241
IC1001
C1246 1.5p BU4094BCFV
Q1241 R1025 1k 1 16 5V
2SK508 STRB VDD
R1026 1k 2 15
DATA OENA
40.00000 R1027 1k 3 14 LOF1 D1505
-60.00000 MHz CLK Q5 DAN222
C1242 V1S 4 13
39p 10.6mV Q1 Q6
V2S 5 12 LOF2
0.703V EP1242 Q2 Q7
V3S 6 11
Q3 Q8
Q1242 V4S 7 10 LOF3
2SC4213 Q4 Q'S
8 9 LOF4
VSS QS
L1261 C1263 1.042V L1264 EP1261
PCK
LW-25 0.0047 V4AS 10µH
PDAT
C1266 1p
PST5
Q1261
2SK508
C1262
27p 11.4mV
0.703V
IC1801
3.49V L1806 C1806
Q1262 MC145170D2R2
2SC4213 0.56µH 0.0047
1
OSCIN
R1805 10M 2
7.65V L1802 OSCOUT
3
C1819 47nH C1807 100p REFOUT
Q1281 56p 4
R1281 L1281 C1292 L1291 FIN
V3S 47 10µH 2SC4405 3 82p 0.18µH 5
C1803 6 DIN
IC1802 10p
R1809 C1816 µPC1678G L1801 7 ENB
R1282 10 0.0047 0.33µH CLK
1 8 8
1.8k IN VCC DOUT
2 7 C1814 D1801
GND GND 15p MA77
8V 3 6 C1802
GND GND 0.0047 L1805
LKAV 4.23V 4 5
GND OUT 100µH
L1051
10µH
R1051
1k
5.01V
IC1051
TA78L05F
5V_PLL
I O
G Q1801 R1822
UMD3N C1817 R1821
0.0047
4 3 R1820
5 2
6 1
Fan lotation Voltage(V)
Setting
CLK OFF 0.00
L 1.32
M 3.41
8V
H 4.98
7.42V
R1905 L1905 C1923 L1904 C1925
L1901 100 10µH C1926 1p LS-509 0.0047
LB-146 0.0047
1.523V Q1904
2SC4403
X1901 7.38V C1917 3.61V L1903
CR-337A Q1901 0.0047 LS-509
C1919
2SC4403 0.0047 7.19V
4.08V R1913 1.877V
X1902 47k
1.136V
CR-338 R1908 L1902 C1916 R1922 C1918
1.585V
470 LS-508 W1902 0.0047 220 0.0047
Q1902
C1904 C1906 2SC4081 2.9V
47p 0.0047 Q1903
0.655V 2SC4081
OPTION
CLK
FCNT
1LO
MKR MKR
EP1501 EP1502 CP1500 C1503
0.0047
C1522 C1524 C1531 L1522 L1523
15p 9p 18p 27nH 22nH C1602 R1601 2k
0.1
C1526 C1528 R1603
3p 5p 2k
LDRS
R1621
R1605
1k 2k
R1562 L1561 L1562 L1563 R1607
C1603
1k 0.1µ 0.1µ 0.1µ 0.1 2k
34 22
VSS DA8
35 21
C1563 C1565 UL DA7 R1609
36 20
10p 7p P1 DA6 2k
37 19
TREE DA5
D1502 D1504 38 P2 VSS 18
1SV237 1SV237 C1604 39 17 R1611
VDD IC1601 DA4 2k
1 4 3 2 0.1 40 SC-1287 16
VSS DA3
2 3 4 1 PST3 R1622 1k 41 15
STRB DA2
PDAT R1623 1k 42 14 R1613
DATA DA1 2k
R1582 L1581 L1582 L1583 PCK R1624 1k 43 13
1k 56nH 82nH 82nH CON_CLK DA0
R1506 44 12
1k VDD VSS R1615
C1583 C1585 2k
C1605
7p 5p 0.1 C1601
10 R1617
2k
30.00000-60.00000 MHz
7.79V
R1627 R1619
47k R1626 2k
5V 0.657V
270
CLK
Q1601 2.29V
R1632 220 C1606
2SC4081
0.0047
L1602 L1603 C1615 C1617
330µH 390µH 270p 270p
C1610 C1612
CP1801 J1601 P1601
82p 33p W1605 W1601 W1604 3LO
from MAIN
unit J400
16
VDD
15
V
14
R
13
PDOUT
12
VSS 11 R1818
LD 1.2k
10
FV
9
FR
ULP
1k PCK MEASUREMENT CONDITIONS
1k PST2 frequency:14.1 MHz USB
RX(RF: no input)
1k PDAT TX(AF: no input)
Digital tester
PAFS_
Range Input resister
200mV 100MΩ
2V 11MΩ
20V 10MΩ
Voltage at RX(No disignation)
R2005 33k
FANL
Q2003
DTA144EU
R2006 5.6k
FANM
FCNT Q2004
DTA144EU
W2001 FANH
Q2005
DTA144EU
2LO
J1901
P1901
2LO 2LO
R1081 C1081 EP2
100 0.1
CP1081
R1082
EP1081 5
MKRS 1 W1081 W1082 2.2k MKR
4
DIVOUT 2
EP1082 3
CLK IC1081
TC7S08F
RF UNIT