Icom IC-7700 Service Manual page 100

R1221
100
7
V+ I C1221
GND
NJM5534MD
R1224
4
R1222 820
C1225
820P
100
C1226
22P
R1223
2
R1225
6
2.7k
3
100
IC1221
R1231
NJM5534MD
100
7
V+
I C1231
GND NJM5534MD
R1234
4 820
R1232 C1251
C1235
820P 10 I C1251
100 C1252
1
C1236 VREFL+
10 2
VREFL-
22P C1254 3
VCOML
R1233
2 0.22 4
R1235 AINL+
6 5
2.7k AINL-
3
R1252 6
100 ZCAL
IC1231 47K 7
VD
NJM5534MD 8
DGND
9
CAL
/CAL R1253 100 10
RSTN
47K
R1254 11
SMODE 2
R1255 47K 12
SMODE 1
FSR0_ 13
LRCK
14
CLKS0_
SCLK
AK5394AVS
R1256 1.5K
-A12V
+D5V
C1404 R1401
4.7K
10
C1405
C1401 I C1401 C1421
1 28
0.1 C1402 10 C1422 10
R1402 VREFL VREFR
0.1 2 27 0.1
GNDL GNDR R1451
C1403 3 26 C1423
4.7K VCOML VCOMR
0.22 4 25 0.22 C1424
AINL+ AINR+ 100
C1406 0.0022 5 24 0.0022
AINL - AINR- R1452
R1408 6 23
R1407
ZCAL VA
C1407 47K 7 22 C1425 C1426 C1453 4.7K
10 VD AGND
0.1 8 21 0.1 10 0.1
DGND BGND
9 20 C1463
C1408
CAL TEST
10 R1409 10 19
/CAL R1421 0.1
RST H PFE
R1462
R1410 100 11 18 R1422 47K
SMODE 2 DFS
R1411 47K 12 17 47K
SMODE 1 MCLK 4.7K
FSR0_ 47K 13 16 R1423
LRCK FSYNC
CLKS0_ 14 15 47K R1461
SCLK SDATA
100
AK5383VF
R1481
100
C1512
MCLK12M
0.0018
R1512 R1513
1K
I C1501
1 28
DGND DVDD
C1522
2 27 DX00_
MCLK SDATA
3 26 R1501 CLKX0_
CLATCH BCLK
4 25
220 FSX0_
CCLK L/RCLK
5 24 /CAL
CDATA PD/RST
6 23
384/256 MUT E
7 22
X2MCLK ZEROL R1522 R1523
8 21
ZEROR IDPMO
9 20
DEEMP I DPMI 1K 1K
10 19
96/48 FILTB
11 18
AGND AVDD
12 17
OUTR+ OUTL+
13 16
OUTR- OUTL-
14 15
FILTR AGND
AD1854JRSZRL
R1578
100
NJM5534MD
R1571 R1573
I C1571
R1579
3
4.7K 220
6
100
2
C1578 7
V+
22P I C1571
R1574 R1575
C1573 V- NJM5534MD
220 820P 4
4.7K R1576
R1631
4.7K
R1612 100
+A5V
4.7K
R1613
220
R1616
220 R1617
100
I C1611
C1613
1 8
2 7 D ET_OUT
820P
3 6
4 5
AGC_OUT
BA15532F
R1624
R1627
330 330
R1626
R1641
1.5K
100
+A15V
+A5V
D3R3V R1312
4.7K
C1311
0.001
C1312
22P
R1313
2
R1311
6
3
100
I C1311
NJM5534MD
NJM5534MD
R1322
4.7K
C1321
C1261
0.001
10
C1262 C1322
28
VREFR+ 22P
27 10
VREFR-
26 C1264
VCOMR
25 0.22 C1265 2
AINR+ R1321
24 6
0.0022
AINR-
3
23
VA 100
22 C1266 C1267 I C1321 R1325
AGND
21 0.1 10 NJM5534MD
BGND
20 R1261
DFS1
19 R1262
47K
HPFE
18 R1263 47K
DFS0
17 47K NJM5534MD
MCLK
16 R1264
FSYNC
15
47K
SDATA
12.288MHz
IC1431
R1453 4.7K 5 1
2
4 3
R1454 4.7K
C1454 10 TC7S04FU
C1455 0.1
R1455 C1456
10K 10
I C1451
1 14
2 13
R1491
3 12 R1492 0
4 11 0
5 10
R1472 C1472
6 9
R1471
7 8
4.7K 1
4.7K
NJM2058V
R1463 C1464
C P1471
R1482
10K 10
CP08VR
100
CP1472
CP08VR
+A5V
C1441
0.1
1
NC VCC
2
C1514
A
22P 3
GND
R1514
2
I C1441
680 6
SN74LVC1GU04DCKR
3
C1533
R1441
I C1511 22P
1K R1535
NJM5534MD IFOUT 1M
R1531
2
100
6
1.5K
R1533
3
I C1531
1.5K
NJM5534MD
C1524 22P
0.0018
R1524
2
680 6
3
I C1521
NJM5534MD
7 7 7
I C1511 V+ I C1521 V+ I C1531 V+
NJM5534MD GND NJM5534MD GND NJM5534MD GND
4 4
4
RxAF_OUT
D3R3V
TLV1117CDC Y
R1653
I C1651
R1652 1.5
I
AD J
1. 5
10
MICIN
C1314
10K
R1315
100
7
I C1311 V+
GND
4
R1316
R1331
100
4.7K
C1331
22P
R1332
2
R1323 C1324
6
4.7K
3
10K 10 IC1331
NJM5534MD
R1333
100
100
7 7
I C1321 V+ I C1331 V+
GND NJM5534MD GND
4 4
R1326
R1334
100 100
R1701
0
5
4
Y
RXIF_
MICIN
RXIF_ (36KHz)
AGC_DET
MICIN
ANVOXIN
IFOU T (36KHz)
RXAF_OUT
RXAF_OU T
AGC_OUT
DACK_ (12.288MHz)
+A15V
+A15V
+A5V
+D5V
+D5V
D3R3V
-A12V
-A12 V
GND
To MAIN-1
CLKR1_
CLKR1_
CLKX1_
CLKX1_
FSR1_
FSR1_
FSX1 _
FSX1 _
D R1_
D R1_
DX1_
DX1_
/RESETD
/RESETD
UNLOCK
UNLOCK
KEYIN
KEYIN
FRWT_
FRWT_
NOISESQL _
NOISESQL_
VOICE_SQL
VOICE_SQ L
RTTYOUT_
RTTYOUT _
FMTONE_DET
FMTONE_DE T
VOXOU T
VOXOUT
ANVOXOUT
ANVOXOUT
CWSTA T
CWSTA T
HSK0
HSK0
HSK1
HSK1
D ET_OUT
To MAIN-1
O
R1651
120
MAIN UNIT (MAIN-4)
IC701
1 SPDI
OUT GND Y
2 C701 3 4
GND L701 B
3 0.1 2 D3R3V
VCC A VCC
47U 1 5
SN74LVC1G08DCKR
J701
TORX178S
1
C702
GND L702
2 0.1
VCC
3
47U SPDO
IN
J702
TOTX178S
J711
L711
KEY
100U
LGR4609-7000
RL721
R722
R724
+15V
10K
10
J721
EXRL1
OMR-109F
Q721
DTC114TU
IC721
EXRL2
Q722
DTC114TU
R725
JPJ2042-01-110
+5V
390
PS7122A L
J731
6 L731
1:RTTY 7 EP731 MPZ1608S221A 100U +15V
6 7
2:GND 1 L732 RTYK
3:SEND 8 L733 100U
4:MOD 3 EP732 100U SEND
1 8 3
4 MPZ1608S221A
5:AF L734 AMOD
6:SQLS 2 100U
5
7:13.8V 4 5 L735
8:ALC
2
100U
TCS4480-0141577
J741
6 L741
7 100U
1:8V
6 7
1 EP742
2:GND
MPZ1608S221A
3:SEND
3
4:BAND 1 3
4 L742
5:ALC
2 100U
6:TRV
4 5 5
7:13.8V
2
TCS4470-0141577
EP751
J751
SPE
MPZ2012S331A
LGY6501-0600C EP752
SPO
MPZ2012S331A
I NTSP
1
REF I/O
J761 J762
01K1971-10 TMP-J01X-V6
10 - 10
SPDI
D3R3V
+5V
SPDO
KEY
EALC
+15V
EXRL1
EXRL2
SQLA
Q731
DTC114TU
+15V
RTYK
SEND
AMOD
TRV
+8V
BAND
IC741
TA78L08F
O I
G
R762
C761
15K
100
Q761
AAF
2SC408 1
C762
10
REF8V