Icom ic-r20 Service Manual page 47

Aug. 2009
1CVCO
L2
R4
33nH
1k 2.3V
C6
6
0.001
5
L4 L1 C3 C4
4
0.22µH 18nH 15p 10p
R1
Q1
C33 C2 D1
47
R2
FH102A-E
2p 18p 1SV314 F R3
C5
10k
12p 1k
C1
0.33
APS
PLLCSTB
PLLDATA
PLLCK
R13 R12 R11
1k 1k 1k
C18
47p
C19
47p
IC1
C20 MB15E03SLPFV1-G-BND-E1
47p
9 CLK FIN
XFIN 8
10 DAT
GND 7
11 LE
DO 6
12 PS
VCC 5
R22 R14 13 ZC
VP 4
330 10 14 L/F
OSCO 3
15 P
OSCI 2
16 R
1
R15
820 C27
0.001
C21
4.7
Explanatory notes
VOLTAGE LINE
1DVCO
R4
1k
2.3V
C6
6
0.001
5
R1 L4 L1 C3 C4
4
47 0.22µH 22nH 22p 12p
Q1
C2 D1 R2
FH102A-E
56p HVC305B 47k R3
C5
27p 330
C1
0.33
BPS
PLLDSTB
PLLDATA
PLLCK
R13 R12 R11
1k 1k 1k
C18
47p
C19
47p
IC1
MB15E03SLPFV1
C20
47p
FIN
CLK
9
XFIN
DAT
10
GND
LE
11
DO
PS
12
R22 R14 ZC VCC
13
330 10 L/F VP
14
OSCO
P
15
OSCI
R
R15 16
C27
820
0.001
C21
4.7
Explanatory notes
VOLTAGE LINE
Q4
2.4V 3.0V
J1
2SC4617
A _ R3V A _ R3V
1
GND
2
APS
3
C _ VCO _ OUT
4
GND
R21 5
C30
C31
1k
C32
0.001 0.001
10
C _ VCO _ OUT
1
L3
C7
2
22nH
4p
3
C8 R10
1p 100
C9 C10
5p 5p
1.7V
J2
APS
PLLCSTB
PLLCSTB
1
PLLDATA PLLDATA
2
PLLCK PLLCK
3
+3V
4
C17 R9
GND
5
5p
56 OSC
6
A _ R3V
+3V
C16
470p
3.0V
R19
2.3V
1k
C25
0.001
C23
R18
0.01
1k R17
180k
C22 R16
0.01 1k
C24
C26
0.01
0.1
0.7V
Q3
2SC5277A 2-E
2NDCVCO BOARD
Q4
3.0V
2.4V
J1
2SC4617
B _ R3V B _ R3V
1
GND
R21 2
BPS
3
1k
D _ VCO _ OUT
4
GND
5
L2
C30 C31
47nH 0.001 C32
0.001
10
D _ VCO _ OUT
1
C7 L3
2
10p 22nH
3
R10
C8
100
4p
C9 C10
8p 8p
1.7V
J2
BPS
PLLDSTB PLLDSTB
1
PLLDATA PLLDATA
2
PLLCK PLLCK
3
+3V
4
C17 R9
GND
5
5p 220
OSC
6
B _ R3V
+3V
C16
470p
3.0V
8
R19
2.3V
7
1k
6
C25
5
0.001
4 R18
C23
3
1k 0.01 R17
2
180k
C22 R16
1
0.01 1k
C24
C26
0.01
0.1
0.7V
Q3
2SC5277A 2-E
2NDDVCO BOARD
to
RF unit
HJ5
2.8V
RF _ IN
GND
2.2V
R32
1k
R31
C49
R30 1k
0.01
180k
Q6
R29 C47 2SC5277A 2-E
0.7V
0.01
1k
R20
10
to
RF unit
HJ4
R19
820
C23
4.7
R18
330
L6
0.22µH
C22 C21 C40
0.33 470p 4p
to
RF unit
HJ9
C37 R22 R27
470p 4.7k 4.7k
D8
1SV308 F
D7
C30
1SV308 F
2p
C39
1p
R23
4.7k
to
RF unit
HJ8
C43
470p
R5
4.7k
C4 C3 C2
8p 6p 8p
D1
1SV308 F
R4
4.7k L2 L1
8.2nH 8.2nH
C41 C42
15p 12p
DOWNCONV BOARD
RF _ IN
GND GND
C53
0.01
C51
C48
470p
0.01
PLLCK
IC4
PLLDATA
PLLESTB
MB15E03SLPFV1-G-BND-E1
1 16
OSCI R
2 15
OSCO P
2.8V
3 14
VP L/F
4 13
VCC ZC
5 12
DO PS
R16
6 11
GND LE 2.3V
7 10 150
XFIN DAT
8 9
FIN CLK
C50
C52 R15 R14 C16
470p
C18 C17
470p
220 56k 470p
470p 470p
C15
470p
R17
1k
C26 Q2
0.1
2SC5006
+3V
2.8V
C14
R10 C19
2.6V
47 470p 0.1
R13
C12 15
10
C8
L3
C10
2p
0.82µH
1p
D3 C13 L4
Q1 R12
C9 R7
1SV245 F 22p 12nH
10
2p 330
2SC5006
R33
R11
1k
15
R9
C11 C58 R8
4.7k
0.001 0.1 10k
Q5
XP1113
4 3
C54 C55
2
R25 R26 47p 47p
C38
1k 1k
470p 5 1
C34
C35
470p
L7 L8 470p
1.5nH 6.8nH
R21
D6
R28 C36 27k
10 2p 1SV308 F
D5 C27
C29 C28
1p 1p 1SV308 F 10p
C32 C31
22p 12p Q4
2SC5624-E
L10 L9
2.2nH 3.9nH
1001 MHz or 2002 MHz LO
2.8V
DOWN _ CONV 3V
C56 R2
1.7V
47p 470
IC2
µPC2749TB C44
470p
3 GND 4 3 4
OUT 5 LO PS 5
2 GND 2
GND 6 GND VCC 6
1 IN 1
VCC RFI IFO
C1
C7 L11
IC3
10p 1p 6.8nH
µPC2757TB
C6 C45
2.4V 470p 3p
C5
470p
*: Refer to the PARTS LIST for the value and name of component.
27
RF _ IN
RF _ IN
8
GND
7
OSC
6
PLLCK
to
5
PLLDATA RF unit
4
PLLESTB HJ10
3
GND
2
IF _ OUT
1
J1
+3V
+3S
Q3
UNR9111G0
+3S
6
+3V
5
DOWN _ CONV to
4
RF unit
2GLO
3
HJ11
1GLO
2
GND
1
J2
R6
4.7k
D2
1SV308 F
C46 R3
3p 4.7k
Explanatory notes
VOLTAGE LINE