Icom IC-756PRO III Service Manual page 95

5V PLL UNIT
P351
J351
1LOA
to RF-B
unit J1301
P651
J651
to RF-B
unit J1101
R101 2k
R102 2k
R104 2k
R106 2k
1
VSS
2
SYSCLKO
3
R108 2k VDD
4
VDD
5
VSS
6
DA0
7
R110 2k DA1
8
DA2
9
DA3
10
VSS
11
R112 2k DA4
12
DA5
13 IC101
DA6
14 SC-1246A
DA7
15
R114 2k VSS
16
VSS
17
DA8
18
DA9
19
R116 2k DA10
20
DA11
21
VDD
22
TE1
23
R118 2k TE2
24
TE3
25
VDD
R120 2k
R122 2k
R124 2k
R127 1M
IC102
TC7S04F
FI101
1 5
C116 CFEC10.8MD11 C117
0.1 0.1 W122
2
3 4
C118
0.1
C152
33p
R155
180
C120
0.1
C155
150p
L152 D152
LB-343
HSM88AS
R132
47k
D153
1.8V
HSM88AS
R141
Q102
0.6V 100
2SC4081
C119 R131
0.0047 100
32MHz_REF
IC191
TC7S08F
1 5
2
3 4 MKRSS
C191
0.1
R139
47k
Q103
2SC4081
C124 0.0047
C123 0.0047
75
ETCO0
74
ETCO1
73
ETCO2
72
VSS
71
ETCO3
70 PAPS
ETCO4
69
VSS
68
PAMT
ETCO5
67 DULS
ETCO6
66 MKRS
ETCO7
65
VSS
64
VDD
63
Q4MA
62
Q16MA
61
VSS
60
FCK
59
RC
58 MKRSS
REF_OSC
57
VDD
56
PDTRI
55
VSS
54
PD0
53
VDD
52
PD1
51 ULDA
PD2
R142
1k
R147
1k
DRES
5V
R130
10
R304 L301
33 10µH
EP151
MMZ1608Y102B
8V
IC382
5.0V
TA78L05F
5V
L181
10µH
8V 1LOA 5V PLLA
I 0
G
Q151
2SK210
C393
C161 5p
0.0047
IC381
C156 R156 C163 R159
LMX2306TM
150p 47k 0.0047 15
1
FLO
2
Q152
CPO
2SC4081 3
GND
4
GND
5
FIN
6
C395 FIN
7
0.01
VCC1
8
OSCIN
R161 R160 W155 C381
82 15 0.0047
4.8V 7.7V
5V
8V
32MHz_REF
C150 R202
0.1 560
D202 KV1770S
6 5 4 L206
1812CS.
122XKBC
Q126
UMD3N
C201
0.0047 D201 KV1770S
1 2 3
L126 10µH
VA1S
R222
33
D222 KV1770S
6 5 4
L226
1812CS.
122XKBC
Q123
UMD3N
1 2 3
L123 10µH D221 KV1770S
VA2S
R252
270
6 5 4
L256
1812CS.
Q122
122XKBC
UMD3N
1 2 3
L122 10µH
VA3S
R272
560
6 5 4
Q121 L276
1812CS.
UMD3N
122XKBC
1 2 3
L121 10µH
VA4S
R301
1.8k
Q124 L124 7.5V
UMD3N 10µH
1 6
Q301
2SC4403
2 5
3.3V
3 4
C302 C320
L125 R321
10µH 39p 39p
10
R309 560
Q181
3.6V
2SC4081 W181
5.0V
R181
1k
4.3V
C311
0.0047
R394 L382
1.8k HF50ACC322513-B
W392
L303
47nH
C380
1
C305
16
7p
VP
D301
15
VCC2 MA77
14 ULPA
R380 10k
FO/LD
13 R387 1k PST2
LE C307
12 PDATA
R385 1k 12p
DATA
11 R386 1k PCKA
CLOCK
10
CE
W385
9
GND
L205
1812CS. C203
122XKBC 0.0047 C206 EP204
1p
C202 Q201
Unselectde 0V
20p 2SK508
Selected 0.7V
C207
R203 0.0047
560
Q202
2SC4213
L225
1812CS. C223
122XKBC 0.0047 C226
EP224
1p
C222 Q221
Unselectde 0V
56P 2SK508
Selected 0.7V
C227
R223 0.0047
470
Q222
2SC4213
L255
1812CS. C253
122XKBC 0.01 C256 EP254
1p
C252 Q251
Unselectde 0V
150p 2SK508
Selected 0.7V
C257
R253 0.0047
560
Q252
2SC4213
L275
1812CS. C273
122XKBC 0.0047 C276 EP274
1p
C272 Q271
Unselectde 0V
100p 2SK508
Selected 0.7V
C277
R273 0.0047
560
Q272
2SC4213
R275
47
4.0V C324 0.0047
BELOW 7.999999MHz 0V
BELOW 7.999999MHz 4.6V
ABOVE 8.000000MHz 4.6V
ABOVE 8.000000MHz 0V
C326 0.1
IC320
L329 µPC1678G R323
C322
0.0047 56n 10
1 8 5V 1L0A
IN VCC
2 7
L328 GND GND
3 6
56n
GND GND
4 5
Q351
GND OUT
DTA114EE
R351
2.7k
L351 L352 L353 C358 C360
56nH 82nH 82nH 56P 56P
C352 C354
3p 2p
C355 D351
10p MA77
10 - 12
A
5V
B
8V
C
D
E
VA4S
VA3S
VA2S
VA1S
Explanatory notes
VOLTAGE LINE
EP321
MMZ1608Y102B
R361
4.7k
L355
4.7µH
R363
4.7k
D361 C361 R353
1SV307 0.0047 15
D362 R352
270
1SV307
Q361
R362
DTC114EE
100
F