Pll Unit - Icom IC-756PROIII Service Manual

10-5 PLL UNIT

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
DA6
14
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
CFEC10.8MD11
C116 C117
0.1 0.1 W122
2
3 4
C118
0.1
C152
33p
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
IC101
Q4MA
SC-1246A
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
R130
10
R304 L301
33 10µH
EP151
MMZ1608Y102B
IC382
5.0V
TA78L05F
5V
8V 1LOA 5V PLLA
I 0
G
R155
180
Q151
2SK210
C161 5p
C156 R156 C163 R159
150p 47k 0.0047 15
Q152
2SC4081
C395
0.01
R161 R160 W155 C381
82 15 0.0047
5V
8V
32MHz_REF
C150 R202
0.1 560
6 5 4 L206
1812CS.
122XKBC
Q126
UMD3N
C201
0.0047
1 2 3
L126 10µH
VA1S
R222
33
6 5 4
L226
1812CS.
122XKBC
Q123
UMD3N
1 2 3
L123 10µH
VA2S
R252
270
6 5 4
L256
1812CS.
Q122
122XKBC
UMD3N
1 2 3
L122 10µH
VA3S
R272
560
6 5 4
L276
Q121
1812CS.
UMD3N
122XKBC
1 2 3
L121 10µH
VA4S
5V
Q124 7.5V
L124
UMD3N 10µH
1 6 Q301
2SC4403
2 5
3.3V
3 4
8V L125 C302
39p
10µH
R309 560
L181 Q181
3.6V
10µH 2SC4081
W181
5.0V
R181
1k
4.3V
C311
0.0047
R394 L382
1.8k HF50ACC322513-B
W392
L303
C393 47nH
0.0047
C380
IC381
1
LMX2306TM
C305
1 16
7p
FLO VP
2 15
CPO VCC2
3 14 ULPA
R380 10k
GND FO/LD
4 13 PST2
R387 1k
GND LE C307
5 12 R385 1k PDATA
12p
FIN DATA
6 11 PCKA
R386 1k
FIN CLOCK
7 10
VCC1 CE
W385
8 9
OSCIN GND
4.8V 7.7V
L205
1812CS. C203
122XKBC 0.0047 C206
1p
D202 KV1770S
C202 Q201
20p 2SK508
R203
560
D201 KV1770S
L225
1812CS. C223
122XKBC 0.0047 C226
1p
D222 KV1770S
C222 Q221
56P 2SK508
R223
470
D221 KV1770S
L255
1812CS. C253
122XKBC 0.01 C256
1p
C252 Q251
150p 2SK508
R253
560
L275
1812CS. C273
122XKBC 0.0047 C276
1p
C272 Q271
100p 2SK508
R273
560
R301 R275
1.8k 47
4.0V C324 0.0047
BELOW 7.999999MHz 0V
ABOVE 8.000000MHz 4.6V
C326 0.1
IC320
C320 C322 L329 µPC1678G R323
R321
39p 10
0.0047 56n
10
1 8
IN VCC
2 7
L328 GND GND
3 6
56n
GND GND
4 5
Q351
GND OUT
DTA114EE
R351
2.7k
L351 L352 L353
56nH 82nH 82nH
C352 C354
3p 2p
D301 C355 D351
MA77 10p MA77
10 - 12
A
5V
B
8V
C
D
E
EP204
VA4S
Unselectde 0V
Selected 0.7V
C207
0.0047
Q202
2SC4213
EP224
VA3S
Unselectde 0V
Selected 0.7V
C227
0.0047
Q222
2SC4213
EP254
VA2S
Unselectde 0V
Selected 0.7V
C257
0.0047
Q252
2SC4213
EP274
VA1S
Explanatory notes
Unselectde 0V
Selected 0.7V
VOLTAGE LINE
C277
0.0047
Q272
2SC4213
BELOW 7.999999MHz 4.6V
ABOVE 8.000000MHz 0V
EP321
MMZ1608Y102B
5V 1L0A
R361
4.7k
L355
4.7µH
R363
4.7k
C358 C360 C361 R353
D361
56P 56P 1SV307 0.0047 15
D362 R352
1SV307 270
Q361
R362
DTC114EE
100
F