Icom IC-7800 Service Manual page 150

8-18 MAIN UNIT
• TOP VIEW
S/P DIF S/P DIF
OUT IN
130
125
J901
4 GND
120
SPDI
GND
SPDO
1
115
to the LOGIC
unit J826
110
105
J411
1 CIVE
CIV 2
CIVE
VDD5
100
CIVE
NC
CV15V
LED0
9 LED1
10
GND
95 8 5
to the SCOPE
unit J906
90
1 4
85
8 5
80
J430
5 GND
PAT8
75
1 4
IDL
IDH
8 5
1
THML
70
to the PA200W
board J2
65
1 4
60
J410
1 DGND 55
DRES 2
DSPCK
SDR1
DFXS
DFRS
DXIS 50
FRWT
SYNCIO
DGND
SDAT
SCK
SST1 45
SPSO
SST2
AGND
+3R3V
+3R3V
-12V
40
+3R3V
+5V
AGND
AGND
T8V
+8V 35
SMUT
SATT
SSB
29
SSA
AGND
30
30
to the SCOPE
unit J4
25
J381
30 GND1T GND1T 29
GND1T GND1T
20
D1R2V_SENS_T D1R2C_T
D1R2V_T D1R2V_T
GND1T GND1T 15
D3R3V D3R3V
GND1T GND1T
FRWT DFXT 10
DVOX
DX1T
DAVOX DSPCK
CTFL DFRT 5
DSKY DSPR
DRES DSPCK
GND1T MCLK 0
0 5 10 15 20 25 30
2 GND1T GND1T 1
to the PA200W board J1
to the DSP-TX
board J961
2
J403
1
to the RXPLL-B unit J1701
T2LO
from the RXPLL-A unit J561
REF IO
from/to the OSC unit J71
REF
I/O
EXT
DC OUT METER
KEYPAD
5 4
8 1
5 4
8 1
35 40 45 50 55 60 65 70 75 80 85 90
PAI
DACK
from the RXPLL-B unit J681
16 1 39
J940
15 2
40
to the LOGIC unit J808
8 - 13
1 3
J404
SCPT
to the SCOPE unit J11 to the RXPLL-B
unit J1501
RELAY ALC
KEY
4
5
8
1
20
1
10 9
8
16 9
9
1 8
18 1
10 9
8
16 9
9
1 8
18 1
95 100 105 110 115 120 125 130 135 140 145
Horizontal
T1LO
from the RXPLL-A unit J421
39
1 2
J900
J361
2
40 1 to the DSP-B board J961
to the LOGIC unit J809
8
J440
to the VR-A board J2
2 22 2
J340
J360
1 21 1
to the DSP-B board J960 to the DSP-A board J960
SUB ACC (2) SUB ACC (1) MAIN ACC (2)
8
1 14
7 8 1
8 7
14 1
1
4 1 4 1
8
8 7
5
14 1
5 8 5 8
1 8
4
4 5
11 20 11
1 14
10 1 10
7 8
1 18
1
16
9 10
5 4
1 18
1 8 1
5 4
8 1
16
1 8 5 4
9 10
4 5 8 1
150 155 160 165 170 175 180 185 190 195 200 205
30 2
J341
1
29
to the DSP-A board J961
1 13 1 2
J451 J492
to the LOGIC unit J810
22 2 1
J142
to the LOGIC
unit J822
21
EXT-SP EXT-SP
SUB MAIN
MAIN ACC (1)
5 8 5
4 4
1
14 8
1 7
5 4
8 1
14 8
1 7
1
8
5
4
210 215 220 225 230 235 240 245 250 255 260
1 GND
J450
VDD5
GND
30 2 16
+3R3V
J400
+3R3V
+3R3V
+5V
+8V
+15V
+8V
-12V
12 GND
29 1 15
to the RXPLL-A
to the DC-DC
unit J1701
unit J2
to the CHASSIS
unit MF1