Icom IC-7800 - Page 230

Aug. 2008
69
VOLTAGE LINE
Explanatory notes
40MHZ
12p C827
0.1
C731
0.1
C734
10
R841
0.1
C703
DTC114EU
Q872
S3LO
0.1C738
1kR724
0.0047
C726
0.01
C803
270p
C770
0.1C737
L801
0.1
C730
2SC5226
Q842
RESET
1kR726
L841
1kR802
270
R810
0.1C721
270
R720
47
R812
L720
220
R845
0.0047
C828
SST1
0.0047
C760
0.0047C720
1k
R727
0.0047
C849
10k
R702
2SC5226
Q843
0.0047
C812
6.8k
R848
0.001C830
+8VLP
270
R766
47
R704
SDAT
2.7k
R852
S2LO
SCOPE
UNIT (1)
GND
0.0047
C811
LMX2306TM
IC801
1
FLO
2
CPO
3
GND
4
GND
5
FIN
6
FIN
7
VCC1
8
OSCIN
9
GND
10
CE
11
CLOCK
12
DATA
13
LE
14
PO/LD
15
VCC2
16
VP
100C832
0.1
C736
0.001C843
120p
C854
0.001
C769
0.0047
C810
10C722
270
R764
0.1
C813
150
R722
1SV232
D822
3.3kR849
0.0047
C801
0.0047C844
0.1C733
0.0047C847
22
R701
E526GN
L822
1kR723
270p
C768
270R847
0.1C742
1SV232
D821
150
R705
3.3k
R843
SCK
0.0047
C807
1kR725
+5VLP
0.1
C740
L825
0.0047
C842
10C802
270
R823
2SK210
Q821
0.0047
C862
1kR801
0.1C739
1kR803
0.0047
C727
L842
1
C805
0.1
C701
100
R703
0.0047
C846
100k
R821
18
R765
SST2
27p
C826
0.0047
C851
220
R854
220
R851
56pC822
0.1
C702
3.9k
R853
100p
C825
0.1C741
D40M
47C845
0.0047C831
0.0047
C850
0.0047
C848
100k
R822
220
R842
150
R813
390
R850
2.2M
R809
AD9857AST
IC820
1
D13
2
D12
3
D11
4
D10
5
D9
6
D8
7
D7
8
DVDD
9
DVDD
10
DVDD
11
DGND
12
DGND
13
DGND
14
D6
15
D5
16
D4
17
D3
18
D2
19
D1
20
D0
21
PS1
22
PS0
23
CS
24
SCLK
25
SDIO
26
SDO
27
SYNCIO
28
DGND
29
DGND
30
DGND
31
DVDD
32
DVDD
33
DVDD
34
NC
35
AVDD
36
AGND
37
AVDD
38
AVDD
39
AGND
40
AGND
41
NC
42
AGND
43
AVDD
44
AGND
45
IOUT
46
IOUT
47
AGND
48
AVDD
49
DAC_BP
50
DAC_RSET
51
NC
52
NC
53
AGND
54
AVDD
55
PLL_FILTER
56
AGND
57
NC
58
AVDD
59
AGND
60
DIFFCLKEN
61
AGND
62
REFCLK
63
REFCLK
64
AVDD
65
AGND
66
DPD
67
RESET
68
PLL_LOCK
69
CIC_OVRFL
70
DGND
71
DGND
72
DGND
73
DVDD
74
DVDD
75
DVDD
76
DGND
77
DGND
78
DGND
79
PDCLK/FUD
80
TXENABLE
CP720
47R735
0.01
C750
3.9k
R734
47R729
10k
R730
CP725
47R736
3.9k
R732
CP721
1.5k
R731
CP724
0.1C724
0.0047C723
10C725
L721
+3R3VLP
CP722
TC74HCT7007AF
IC803
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
GND
8
4Y
9
4A
10
5Y
11
5A
12
6Y
13
6A
14
VCC
0.0047
C808
L802
10C809
L722
SCOPE UNIT (2)
SMUT
68p
C762
39p
C764
12p
C766
150p
C761
270p
C763
300p
C765
220p
C767
CP723
SPS0
1kR737
SYNCIO
0.01
C751
3.9k
R739
L761 L762
L763
L764
27p
C821
5pC823
L821
L823
560
R855
4.7k
R806
3.3k
R814
22k
R808
0.0068
C806
0.5p
C829
6.8k
R844
10k
R721
10k
R811
L851
L701
L852
82p
C852
33p
C853
12p
C855
47p
C856
270
R856
18
R857
100
R858
33
R859
470
R860
470
R846
10
C833
47k
R738
2SC4081
Q841
0
R741
0R742
0R744
0
0
R745
R748
0
R767
0
R771
0
R861
2SC4406
Q810
2SC4406
Q701
2SC4406
Q720
SCK
SST1
SDAT
SCK
SDAT
20pC824
RESET
SST2
SST1
RESET RESET
RESET
SCK
SCK
SDAT
SDAT
SST2
SST2
SPS0
SMUT
SMUT
SPS0
SYNCIO
SYNCIO
5V
8V
8V
40MHz
40MHz
GND
S2LO
S3LO
3R3V
5V
8V
3R3V
5V
8V
8V 8V
3R3V
5V
3R3V
5V
5V
5V 5V
3R3V3R3V
D40M
D40M
D40M D40M
D40M
3R3V 3R3V 3R3V
D40MD40M
3R3V
3R3V
5.25V
3.03V
1.68V
4.55V
0.75V
2.20V
3.17V
2.98V
Display ON: 2.37V
OFF: 0.00V
Display ON: 5.32V
OFF: 7.68V
2.58V
6.68V
3.69V
4.95V
3.25V
6.02V
2.88V
1.28V
0.77V
4.57V
1.27V
1.88V
range: input impedance
MESUREMENT CONDITIONS
SCOPE ATT: 0dB
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
Digital tester
ANT(RX): no input
(TX): no modulation