Icom IC-718 Service Manual Addendum page 147

PLL unit
WS1B
P1
2LO
1
PLL unit J1
2
2LOE
1 2
P2
+
2nd Lo
Tx: 0V
J401
Q511
1 2 C511
q Rx: 3.5V
DTC114EE
100
w
e
r
t
R511
Q501
R402 D502 2.2k
R512
18 MA2S111 DTC114EE
4.7k
+
R401 R403
C502
R502
270 270 R513 Q503
0.0047
R514 C503 1k
R2312
33k DTC114EE
33k 0.47
t 4.7k
L501
D401
L401
L402 LS-469 7.8V
HSB88WS D501
LR-358 LR-395
DAN202K
y
R503
R304 C401
47k
1k 470p
C510 + R501 +
C504
C506 C507
C307 C501 1 1k
0.0047
47 0.1
0.0047 0.0047
Tx: 3.5V Rx: 0V
u
i
o
R1310 R1311
2.2k 2.2k
Tx: 0V Tx: 0V Tx: 0V
R1301 Rx: 1.1V Rx: 0.4V Rx: 1.9V
1k
R1304
FI1301
R1302
L1301 L1302 D1301 L1303 4.7k
CFWS455HT
220 C1307
LS-468 LS-468 MA77 LS-468
0.1
1 2
3 4 5
D1302
MA77
R1305
C1301
R1300 C1305 1.8k
0.1
0.1
100k
!0
14V
!1
R8V
Tx: 0V
Tx: 0V
Rx: 0.4V
Q1508 R1611
Rx: 5.8V Q1509 R1601
100
2SC4081 47
DTA114EE
!2 R1615
!3 12.0V Q1601 10k
C1602
2SC4081 0.001
Q1611
2SC4081
C1601
!4 R1603
Tx: 0V 0.1 27k L1601
Q1507 R1520 C1515
R1521 C1516 R1522
LS-450
Rx: 5.8V
2SC4081 6.8k 1k 0.1 0.1 220
R1519
R1610
+
100
7.2V 2.2k
C1513 D1503
47 MA2S111 R1602 Q1602
R1604
C1514 470 47k 2SK882
C1611
Q1506
0.1 0.1
NBS DTC114EE
DN
!5
!6
!7 8V
!8
!9
Q1802 Q1803
D1802 C1815
UMD6 UMD6 MA2S111 150p
@0
R1809
4 3 4 3 R1812 R1813
100
2.6V 3.3k D1803
15k
R1808
5 2 5 2
1SS375
15k
4.3V
R1810
6 1 6 1 R1815
C1805
1M
R1814 22k
0.47
1k
R1807
+ +
10k Q1805
C1804 C1813
C1802 C1803 2SC4081
0.1 0.0047
2.2 1 –4.5V C1814
@1
C1812
10
100p
+
@2
@3
@4
@5
@6
R2204 C2203 IC2201
100k PC5023 R2212 R2213 R2224
0.1
@7
220k 220k 4.7k
13 12
NC VCC
14 11 R2214
AVI SWC
@8 4.7k
R2206 C2205 15 10 R2223
C2204
AVO VCAC
180k 100p 16 VCAO 9 6.8k
1
@9 MUTE +
17
+ VCAI 8
#0 VOXO
18 7 R2216 C2213 R2215
VOXI SWO
R2209 19 BU1O 6 47k 0.1 10k
BU2O
100k C2208
20 BU1I 5 C2215 R2217 C2214
BU2I
470p 21 SWI 4 1 47k 0.1 R2219
#1 AMPO +
22 3 56
AMP– CMPO
23 CMPI 2
AMP+ R2218 D2202 D2201
R2211 C2210
24 1
10k DA221 DA221
82k 470p GND NC R2220 R2221
#2 + +
220k 22k
#3
C2212
C2211 R2222 C2217 C2216
W2201 10
10 6.8k 0.039 0.1
#4
AAFO AFGV PHO PHOE
#5
#6
#7
R2707
C2710
1 10 100
#8
VCC2 VCC 2.2
2 9
#9
IN+ VCAOUT
8 R2708 +
$0 3
IN– CTL
4 VCAIN 7 27k C2720
OUT +
5 NC 6 0.1
GND
C2721 IC2702
100 C2723
IC2701 R2709 TA7368F
47
2.2k
M5282FP R2720 1 10 +
+ +
$1 NC POUT
10k
2 9
VCC PWGND
C2704 R2705 C2705 3 8
NC PREGND
10 10
4.7k 4 7
C2709
VIN PHASE
+ +
10 5 NF 6
RIPPLE
+ C2703 + +
R2706 C2706 R2710 R2721 C2722
10 4.7k 10 8.2k 560 47
C2708
10
$2
$3
$4
$5
$6
MP25
13.5V 8.0V IC3501
L3501 C3513 R3503
PC1555G2
IC3401 1M 0.1 10k
R3501
8
TA7808S 180 7 VCC
6 DISCHARGE
5 VTH
RESET 4
I O VCONT
R3504
R3502
G
100k
180
+ +
C3501
C3402 C3403 C3404
+
+
C3401 0.1 0.1 100 47
100
C3502
C3503 C3504 C3505 C3506
0.1 22 0.1 0.0047 0.1
$7
$8
$9
AM ON: 0.6V AM ON: 0.6V
except AM: 3.4V except AM: 3.5V
8V
5V
T8V
ALC
WCNT
R509 R602 R604
R504 R505
10k 33k 4.7k
22k I O
100
FI611
R605 R614
R611 FL-65
4.7k
10k 10k
R603 D601 D605
Tx: 0V
C508
33k DAP202K DAP202K
1.1V R613
0.1 Rx: 6.5V
100
Tx: 3.4V
D503
Rx: 0V
R612
DAN202K
C601
5.6k
R506
0.1 C611 C612
10k
D602 6.8V D606
0.1 0.1
C509
R507
DAN202K DAN202K
0.0047 OP FILTER
4.7k
R601
OP FILTER Select: 4.8V
R510
10k
10k Select: 4.6V Unselect: 0.6V
Unselect: 0.6V
Q502
R508
R624
2SK882 R621 CP1621 CP1622
103KCT 3.3k
3.3k
3.0V
R623
100
1.1V R622
5.6k
C621 C622
C1309
0.1
L1304 0.1 0.1
R1307
330H D603 D607
6.8k
Tx: 0V DAP202K DAP202K
Rx: 6.4V
R1306
470k
W1311 C631 R633
R631 1k
0.1 R635
Q1301 10k
10k
3SK131
Tx: 0V
Rx: 6.9V
R634
R632
100
C1308 R1308 C602
C1310 D604 D608
5.6k
220 0.1 C632 C633
0.1 0.1 DAN202K DAN202K
0.1 0.1
14V
8V
R8V
C1615
2.2 +
Tx: 0V
C1613
Rx: 6.0V
R1610 0.1
R1624
R1625
10k 470
R1621 470k
2.8V R1631
Tx: 0V
L1611 100 Q1603 10k
LS-450 Tx: 0V Rx: 2.9V
R1612 3SK131
332KCT Rx: 1.4V
D1631
R1622
L1621
C1625
2.2k DAN202K
LS-450
0.1
C1632
R1617
Tx: 0V C1624 0.1
332KC R1623
0.1
Rx: 2.1V R1626
560
220k
C1621
C1623 C1631
0.1
R1627 R1632
R1614 0.1 0.1
332KC 10k
4.7k
14V
8V
5V
ALC
R2001
R1904
C1905 100
47 IC2001
0.0047
C2002 L2001
TA4101F
100p
C2001 100H
C1904 5 BASE 4
R1905 0.1
BASE
0.1
100k 6 OSCIN 3
BASE
C1901 7 VCC 2
R1901 R1903 GND
3.3 8 1
10k 1k COLECT IFOUT
D1901
+ R1907 1SS375
1k +
C2003 C2004 C2007
R2002 C2005
0.1 0.1 0.1
R1902
C1902 22k 1
C1903
47k
R1906
0.0047 0.0047 C2006
56k
0.0047
SSBAF
8V
IC2351A
+
C2354 L2301
R2352 NJM2904M
10 R2307 100H
W2351 56k +
3
8
4.7k
+ 1 C2312
R2319
C2304 C2303
R2353 47k 2
0.47 560
10 0.1
–
4
C2219
C2352
8.1V Q2381
0.47 C2353 R2318
0.0022
2SC4081R R2300
IC2351B 390P 560
560 +
R2381
NJM2904M
D2381 8.2V
100k
5 1SS375 C2305 C2306
0.1V
+ R2387 R2386
7 10 0.1
R2384 10k 10k
6
Q2383 Q2384
–
1k
R2301
R2383 DTC114EE DTC114EE
R2317
1k
22k
+ + + 1k
R2382 C2383
C2381 C2384
R2385 AM Tx: 9.2V
470k C2382 C2380 10
10
10k AM ON: 0V 1
0.1 0.1 except AM Rx: 0V
SPS AFMS ESPO SPE
14V
8V
5V
–5V
R2722 R2903
47k 3.3
R2803
10k
D2701 L2901
5 4
DAP202K LR-270
1 2
R2804 C2904 +
3
C2905
IC2801 IC2901
10k 0.1
1000
TC4S66F LA4425A R2902
C2902
C2906 4.7
10 1 5
470
+ 4 +
C2801 2
R2805
0.1 C2901 C2903 R2901 C2907
3
1k
0.047 0.1
470 0.1
R3505
100
D3502
R3506
1 DA221
GND 100 L3502
TRG 2
1M –5V
OUT 3 +
C3507
C3509 C3510 C3511 C3512
47
C3508 0.1 10 0.1 47
+ +
47
+
D3503
MA8051
23
AMS
8V
L4501 HF50ACC322513-B
ESPO
5V
T8V C4501
0.0047
SPE
C4502
1.1V 0.001
L4651 HF50ACC322513-B
8V
3.1V
L4652 10H
STRT
L4653 HF50ACC322513-B
SEND
14V L4654 HF50ACC322513-B
AAFO L4656 10H
2N3K
L4657 10H
AMOD
R606
10k C4651 C4653 C4654 C4655 C4656
0.0047 0.0047 0.0047 0.0047 0.0047
L4658 100H
SQLS
2NOP
L4659 10H
FSK
L4660 10H
KEY
2NTH
L4661 100H
BAND
1.1V
Q4601
2SD1619T
SNDS
R4227 C4648 C4659 C4660 C4661
10k C4662 0.0047 0.0047 0.0047 0.0047
0.0047
DAS
C603 L5101 1H
DOT
0.1
L5102 1H
C5101 C5102
0.0047 0.0047
L4801
100H
EALC
C4801 RL4801
L4802
0.0047
AHY103
HF50ACC322513-B
D4801
MA2S111
14V
Q4801
C4802
DTC114EE
0.0047
C4803
T8V
0.0047
C802
0.1
Tx: 3.4V
Rx: 0V
C4411–C4414, C4416, C4417 0.001
R8V
T8V
14V
8V
5V STRT
5V
SNDS
D1632 8V
R1633
HV
100k MA77
14V
C2010 R2003
FSK W4401
0.1 100
MICE
MIC
SEND
SQLS
R2004 SQLS
C2008
R2005
220
0.1 +
470 C4403–C4410
0.0047
C2009 SPS
R2006
10
330
PHOE
PHO
–5V
R2313
R2320 R2007 C2309
8.2k 2.2k 0.1 10k T8V
C2313 R2008 IC2301
0.1 R2308 2.2k
NJM1496V
332KC
C2310
1 V– 14
C2301 VS+
R2306
2 NC 13 0.1
0.1 VCS
330
3 VO– 12
VCS
4 NC 11 KEY
VS–
R2305
5 VC– 10
BIAS KEY C4401
1k
R2302 6 NC 9
VO+ 0.0047
7 VC+ 8 R2310
47k NC
1k
R2304
D2301
47k
MA2S111 +
R2303
R2321
C2315 C2314
4.7k
220k
0.47 0.1
C5001
Q2302 0.001
AMS AM ON: 0V
DTC114EE
except AM: 7.5V
T8V
R8V
AMS
FOR D4220 MA2S728
DOT R4226 1k
DAS
R4225 1k
VOX R4224 3.9k
AVX R4223 1k
SM R4222 1k
ALM R4221 1k
REF R4220 1k
FOR R4219 1k
PAT R4218 1k
BEE R4217 1k
DN W4216
RX R4215 1k
TX R4214 1k
SBS R4213 1k
KDS
DSP R4211 1k
DSS R4210 1k
SST R4209 1k
DIN
R4208 1k
DRE R4207 1k
AST R4206 1k
MST R4205 1k
FST R4204 1k
BST R4203 1k
MC R4202 1k
MDA R4201 1k
POWS
MC
C4200
MC MDA
0.0047
MC MDA
MC MDA
MC MDA
MAIN UNIT
MDA
MC
MDA
HV
J4501
ESPO
EXT SP
SPE
J4502 P1
SP1
SPO +
1 1
SPE
2 2
–
J4651
8V 1
GND 2
BDT 4
4 3 2 1
SEND 3
13.8V 8
8 7 6 5
7
AFO 12
12 11 10 9
13
MOD 11
ACC
SQLS 13
10
FSKK
KEY 9
5
BAND
ALC 6
J5101
GND
W4801
ELEC-KEY
W4802
W4803
EP4801
J4801
ALC
ALC
SEND
SEND
BFO
J2001
P5
BFO BFO
1 1 PLL unit
BFOE BFOE
J2
2 2
PLL unit
WS2
J4401
STRT
30
5V 29
SNDS
28
8V
27
8V
26
HV
25
14V
24
14V
23
FSKK
22
MICE
21
MIC
20
SEND
19
SQLS
to
18
SEND
17 LOGIC
SEND
unit
16
SEND J6
15
SPS
14
PHOE
13
PHOE
12
PHO
11
PHO
10
GND
9
GND
8
GND
7
GND
6
CIVE
5
CIV
4
ALMS
3
NC
2
KEY
1
C4402
0.0047
J5001
CIV
REMOTE
CIVE
J4201
GND
30
DOTK
29
DASK 28
VOXL
27
AVXL
26
SML
25
ALML
24
REFL
23
FORL
22
PATL
21
BEEP
20
to
DNB
19
LOGIC
RXS
18
TXS unit
17
J7
SBSY
16
KDS
15
DSPS
14
DSST
13
SSTB
12
DINT
11
DRES
10
ASTB
9
MSTB
8
FSTB
7
BSTB
6
MCK
5
MDAT
4
POWS
3
GND
2
GND
1