Icom IC-7800 Service Manual Addendum page 65

Dec. 2009
SECTION X BOARD LAYOUTS
• MAIN UNIT
(TOP VIEW)
S/P DIF S/P DIF
OUT IN
J496
IC495
J901
4 GND
SPDI
J495
J491
GND
1 SPDO REF IO
to the LOGIC
TO OSC J71
unit J826
2
J901
TO LOGIC J826
J411
1 CIVE
EP421
CIV 2
CIVE
VDD5
CIVE
NC
CV15V
LED0
9 LED1 EP417
GND 10
to the SCOPE
J411
L504
IC503
unit J906
TO SCOPE J906
T3LO
J501
TO RXPLL-A J681
C583 R837
J430
IC502
5 GND
PAT8
IDL
IDH
1 THML
to the PA200W
board J2
IC501
J430
TO PA200W J2
R487
J410
R410
1 DGND
DRES 2
DSPCK
SDR1
R414
DFXS
DFRS
DXIS R416
FRWT
SYNCIO
R485
DGND
SDAT
SCK R418
SST1
SPSO
R420
SST2
AGND
+3R3V
L410 C410
+3R3V
-12V
+3R3V
+5V
L412 C412
AGND
AGND
T8V
+8V
SMUT EP414
SATT
SSB
R422 C415
29 SSA
AGND 30
R423 C980
C816
to the SCOPE
J380
C813 R812
unit J4
R813
C814
J410 R814
J381 R816
TO SCOPE J4 R810
30 GND1T GND1T 29
Q805
GND1T GND1T
R811
D1R2V_SENS_T D1R2C_T
D1R2V_T D1R2V_T
J802 TRV
GND1T GND1T C406
D3R3V D3R3V
GND1T GND1T
FRWT DFXT
TO BPF J107
DVOX DX1T
7
DAVOX DSPCK
J403
CTFL DFRT
DSKY DSPR
DRES DSPCK TO RXPLL-B J1701
GND1T MCLK
GND1T
2 GND1T 1
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
J9
J6 J7
2A
J490
R58 R57
F2 F3 F1 Q52
TO RXPLL-A J561
J502
T2LO
R538
C544
FI501
R538 L508 FI503
FI502
L507
L505
MP502
J808
Q502
TO SCOPE J11
TSCP
C847
MP511
Q503
C846
Q806
R839
R840
R841 L527
C845 R852
L518
R572
R820 C821
C820
C838
R570
L521 L522
C837
C819
R831
R612 D613
C818 R830
R614
C697 L647 R823 C823
C698
C824
C745
C760
C684 C700 C716 C732
C750 C826
C685 C701 C717 C733
C751 C827
L821
L649
L628 L633 L638 L643
C829 C828
C761
C830
C692 C708 C724 C740
C756
C693 C709 C725 C741
C832
C833
C759
C835 R827
L651 R828
C834
R825
L803
DSP-TX
C802
R801
C807 R817 R231
R462
R466
R233 C235
C801
C804
Q801
R807 C233
C405
C407
C230 J940
YGR
J801
TO PA200W J1
J403
B5969K
TO LOGIC J808
16 1 39
J940
15 2 40
to the LOGIC unit J808
64
1 3
J404 J360
SCPT to the RXPLL-B
to the SCOPE unit J11
unit J1501
RELAY ALC
KEY
R50
TO
J5 RXPLL-B J1501
J404
J404
3
C550 C545
C51
R550
R559
R549
R493
J8
J360
R88 C198
C222
R197
Q62
R89
R69 R79
R228 C226
C225
C351
R199
R81 50M
R851 Q60
R75 R76
L512
R218 C216 C215
D351 R352
R176 R82
R351
AM
C460
Q61
IC460
R93
R73
R87 C61
R476 R468
C62
CP82 R469
R474
R566
L517
J503
IC201
C563 T1LO
C204
TO
R513
R204
RXPLL-A J421
L515
Q507
IC330
4
L250
C260
R381
IC310
IC260
DACK C250
J399
TO
IC290
RXPLL-B J681
IC250
DSP-B
J381
J361
CP81
J940
J900 6
FOR
J900
CP495
CP496
SR8V
CP496 CP495
MR8V
TO LOGIC J809
TO FRONT J2
1 39 2
J900
J361
2 40 1
to the LOGIC unit J809 to the DSP-B board J961
8
J440
to the VR-A board J2
2 22 2
J340
1 21 1
to the DSP-B board J960 to the DSP-A board J960
J4 J3 J2
L14
L7
L17
C39
C38
R43
R41
R42 R40
R39
J340
C212
R221 R211
C46 IC101
C221
R31
C106
C33
R32
C214
C211
C45
C32
C200 C469 C29 C28
C201
R470
R472 R108
C464 C461
IC5 IC3
C118 C113
R463 R201 R25 R29
C470
C203
C249
R471 R23 R27
R44 R30
R331 R330 R129
R128
C41 C40 C110
R127
R126
IC331
R183
C194
R184
R240 R187
R185
C183
C244 R188
R186
C332
C195
C184
C186 C180
C115
C185
C189
L180
C310
C188
R156
C116
R192
C207
C206 C190
C193
C344
L290
J341
C442
TO MF1(CHASSIS)
DIP
C364
J451
J440
J440 J451
TO LOGIC J810
30 2
J341
29 1
to the DSP-A board J961
1 13 1 2
J451
J492
to the CHASSIS
to the LOGIC unit J810
22 2 1
J142
to the LOGIC
unit J822
21
EXT-SP EXT-SP
SUB MAIN
J140
J141
L142
L141
J1
L143
L4
C37
J401
C36
1
R38
R36
R37 R35 J142
R34
RL141
J142
TO RX PLL-A J1501
IC100
C101 TO LOGIC J822
IC1
R584
R494
C145
R496
R103
R146 R145
R147
IC140
C117
C151
Q131
C133
R134
R137
C144
C124 C127
C142
IC105
C123 C128
R135
R136
C136
Q132
C141
R140
C152
R245
R155
C208
R243
L456
C140
R241
R151
D241
DSP-A
L453
L452
C242
L451
C494 C498
J400
5
J400
R495
TO RXPLL-A J1701
J450 1 GND
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
unit MF1