Icom IC-7800 Service Manual Addendum page 524

CI-V
RS-232C USB LAN
J907
GND
9 9
NC
8 8
NC
7 7
RX-
6 6
NC
5 5
NC
4 4
RX+
3 3
TX-
2 2
SCOPE UNIT
TX+
1 1
J908
GND
1 1
VBUS1
2 2
D-1
3 3
D+1
4 4
GND
5 5
to LOGIC unit J803
W131, W132
W178-W185 to LOGIC unit J825 W129, W130
W127, W128
W16
MAIN UNIT
W1
J825
MTXD1
1 1
MRXD1#
2 2
GND
3 3
CISEL
4 4
MTXD2
5 5
MRXD2#
6 6
GND
7 7
GND
8 8
W13 to SCOPE unit J909
W14 to SCOPE unit J908
W12 to SCOPE unit J907 J802
TX+
1 1
TX-
2 2
RX+
3 3
NC
4 4
NC
5 5
RX-
6 6
NC
7 7
NC
8 8
GND
9 9
J203 J805
GND GND
20 1
GND GND
19 2
LRXD LRXD
18 3
LTXD LTXD
17 4
NC NC
16 5
LG_PWR LG_PWR
15 6
NC NC
14 7
LG_RES LG_RES
13 8
+3R3V +3R3C
12 9
GND GND
11 10
GND GND
10 11
C15V C15V
9 12
C15V C15V
8 13
C15V C15V
7 14
NC NC
6 15
8V +8V
5 16
MSND MSND
4 17
GND GND
3 18
NC NC
2 19
VDD5V VDD5V
1 20
(VR-A BOARD)
FRONT UNIT
(DISPLAY BOARD)
to MAIN unit J440
MAIN ACC (1) MAIN ACC (2)
MAIN SUB
J1 J2
SP SP
OUT OUT
EXT MONITOR
J11 J808
W83, W84
SCPT
SCPT
J340 J341
J1 AGCDET_A 2 1 IFIN_A GND1A 1 GND1A
2
GND 4 3 GND GND1A 3 MCLK
4
SCPA
AFOUT_A 6 5 AGCOUT_A DRES 6 5 DSPCK
GND 8 7 GND RTDA 8 7 DSPR
J2 +A5VA 10 9 +A5VA NSQA 10 9 DFRA
GND 12 11 GND DULSA 12 11 VSQA
SCPB
-12V 14 13 -12V GND1A 14 13 DSPCK
GND 16 15 GND TNDA 16 15 DX1A
J3 +D5VA 18 17 +D5VA FRWT 18 17 DFXA
GND 20 19 GND GND1A 20 19 GND1A
SAD
+15V 22 21 +15V D3R3V 22 21 D3R3V
GND1A 24 23 GND1A
D1R2V_SENS_A 26 25 D1R2V_A
D1R2V_A 28 27 D1R2V_A
GND1A 30 29 GND1A
J921 J961
AGCDET_A 1 2 IFIN_A GND1A 1 GND1A
2
GND 3 4 GND GND1A 3 4 MCLK
AFOUT_A 5 6 AGCOUT_A DRES 5 6 DSPCK
GND 7 8 GND RTDA 7 8 DSPR
+A5VA 9 10 +A5VA NSQA 9 10 DFRA
GND 11 12 GND DULSA 11 12 VSQA
-12V 13 14 -12V GND1A 13 14 DSPCK
W15 GND 15 16 GND TNDA 15 16 DX1A
+D5VA 17 18 +D5VA FRWT 17 18 DFXA
GND 19 20 GND GND1A 19 20 GND1A
+15V 21 22 +15V D3R3V 21 22 D3R3V
GND1A 23 24 GND1A
D1R2V_SENS_A 25 26 D1R2V_A
D1R2V_A 27 28 D1R2V_A
DSP-A BOARD
GND1A 29 30 GND1A
to SCOPE unit J3
W17 W85, W86
J1301
SCPA
J421
T1LO
J561
T2LO
J681
T3LO
RXPLL-A
W2
J10
UNIT
M10M
J1002
HF RF IN
J1201
6m RF IN
J604
10
9
8
7
6
5
4
3
2
1
W3
LOGIC UNIT
J602
W9 W10
(CF BOARD)
10 - 2
SUB ACC (1) SUB ACC (2)
J3 J4
ALC SEND METER MEMO KEY
RELAY OUT KEY
MAIN UNIT
J360 J361 J380 J381
GND1B 1 GND1B GND1T 1
AGCDET_B 2 1 IFIN_B 2 AFIN 2 1 ANVOX 2
GND GND GND1B 3 MCLK GND1T 3
4 3 4 GND 4 3 GND 4
AGCOUT_B DRES 6 5 DSPCK DRES 6 5
AFOUT_B 6 5 TX36K 6 5 GND
RTDB 8 7 DSPR DSKY 8 7
GND 8 7 GND GND 8 7 GND
NSQB 10 9 DFRB CTFL 10 9
+A5VB 10 9 +A5VB +A5VT 10 9 +A5VT
GND GND DULSB 12 11 VSQB DAVOX 12 11
12 11 GND 12 11 GND
-12V -12V GND1B 14 13 DSPCK -12V DVOX 14 13
14 13 14 13 -12V
GND GND TNDB 16 15 DX1B GND FRWT 16 15
16 15 GND 16 15
+D5VB +D5VB FRWT 18 17 DFXB +D5VT GND1T 18 17
18 17 +D5VT 18 17
GND GND GND1B 20 19 GND1B GND D3R3V 20 19
20 19 20 19 GND
+15V +15V D3R3V 22 21 D3R3V +15V +15V GND1T 22 21
22 21 22 21
GND1B 24 23 GND1B D1R2V_T 24 23
D1R2V_SENS_B 26 25 D1R2V_B D1R2V_SENS_T 26 25
D1R2V_B 28 27 D1R2V_B GND1T 28 27
GND1T
GND1B 30 29 GND1B 30 29
J921 J961 J921 J961
AGCDET_B 1 2 IFIN_B GND1B 1 GND1B AFIN 1 2 ANVOX GND1T 1
2 2
GND 3 4 GND GND1B 3 4 MCLK GND 3 4 GND GND1T 3 4
AFOUT_B 5 6 AGCOUT_B DRES 5 6 DSPCK TX36K 5 6 GND DRES 5 6
GND 7 8 GND RTDB 7 8 DSPR GND 7 8 GND DSKY 7 8
+A5VB 9 10 +A5VB NSQB 9 10 DFRB +A5VT 9 10 +A5VT CTFL 9 10
GND 11 12 GND DULSB 11 12 VSQB GND 11 12 GND DAVOX 11 12
-12V 13 14 -12V GND1B 13 14 DSPCK -12V 13 14 -12V DVOX 13 14
GND 15 16 GND TNDB 15 16 DX1B GND 15 16 GND FRWT 15 16
+D5VB 17 18 +D5VB FRWT 17 18 DFXB +D5VT 17 18 +D5VT GND1T 17 18
GND 19 20 GND GND1B 19 20 GND1B GND 19 20 GND D3R3V 19 20
+15V +15V
+15V 21 22 D3R3V 21 22 D3R3V 21 22 +15V GND1T 21 22
GND1B 23 24 GND1B D1R2V_T 23 24
D1R2V_SENS_B 25 26 D1R2V_B D1R2V_SENS_T 25 26
D1R2V_B 27 28 D1R2V_B GND1T 27 28
DSP-B BOARD DSP-TX BOARD
GND1B 29 30 GND1B GND1T 29 30
to SCOPE unit J2
W18
to DC-DC unit J2
J1501 P70
DIFB
1 1
GND
2 2
J681
DACK
RXPLL-B
UNIT J10
W147, W148
S10M
J1002
HF RF IN
OSC
J1201
6m RF IN
UNIT
W4 W11
10
9
8
7
6
J1 J2
5
4
J51
3 +3R3V 1 30 +3R3V +3R3V 1 40 +3R3V
2 VCC TCK +3R3V 2 29 A22 CE01 2 39 +3R3V
1 2
1 TDO TDI A21 3 28 A20 CE00 3 38 CE11
3 4
4 27
TMS GND A19 A18 CE02 4 37 CE10
5 6
5 26 5 36
A17 A16 CE21 CE12
6 25 6 35
A15 A14 CE20 CE31
7 24 7 34
A13 A12 CE22 CE30
8 23 8 33
A11 A10 VPEN CE32
9 22 9 32
A9 A8 RP# WE#
10 21 10 31
A7 A6 OE# STS
11 20 11 30
A5 A4 D15 D7
12 19 12 29
A3 A2 D14 D6
13 18 13 28
A1 A0 D13 D5
14 17 14 27
A23 GND D12 D4
15 16 15 26
GND GND D11 D3
16 25
D10 D2
17 24
D9 D1
18 23
D8 D0
19 22
GND BYTE#
GND 20 21 GND
MEMORY BOARD
to PA unit MF1
SP1
DC REF X-VERTER RXANT RXANT RXANT RXANT
OUT I/O INA OUTA INB OUTB
W2 W2
ACC UNIT
J505
J490 J108
J103 J104 J105 J504
J492
RX-ONLY
DFAN 1 1
J506
GND 2 2
RX-B
GND1T J107
J802
MCLK W99, W100
TRV-TX
TRV-TX
DSPCK
DSPR
J440
DFRT
DSPCK
MICI
1 1
DX1T
MICE 2 2
DFXT
PHOS
3 3
GND1T
PHE
4 4
D3R3V
PHOM 5 5
GND1T
PHE J106
6 6
D1R2V_T
AFO
7 7 BPF RX-ANT
D1R2C_T
AFE
8 8
GND1T
GND1T
J451 UNIT
5
RXMREC
1 1 4
RXMRECE
2 2 3
RXSREC
3 3 2
GND1T
RXSRECE
4 4 1
MCLK
MPLAY
5 5
DSPCK
MPLAYE P2
6 6
DSPR
SPLAY
7 7
DFRT
SPLAYE
8 8
DSPCK
MICREC
9 9
DX1T
MICRECE
10 10
DFXT
MICPLAY
11 11
GND1T
MICPLAYE
12 12
D3R3V
GND
13 13
GND1T
D1R2V_T
D1R2C_T
GND1T J142
GND1T
SPO
1 1
SPE
2 2
W106, W107
to PA 200W unit J1
to PA 200W unit J2 W101-W105
W108-W118
P51
J501
1
RF OUT-B 2
DIGISEL 3
4
UNIT 5
6
7
8
J1
9
RF OUT-A
10
to MAIN unit J142
W5 W6
LOGIC UNIT
J2
GND W1
11 11 W22
VDD5 H8V
10 10 10
GND H8V
9 9 9
+3R3V GND
8 8 8
+3R3V GND
7 7 7
+3R3V GND
6 6 6
+5V DC-DC UNIT GND
5 5 5
+8V C15V
4 4 4
+15V C15V
3 3 3
-12V LG_PWR
2 2 2
GND GND
1 1 1
to MAIN unit J450
J3
W176, W177
RX-ONLY
J2
W143, W144
RX-B
MF3
ANT1
J51
TUNER UNIT
J61 ANT2
5 5 5
4 4 4
3 3 3
2 2 2
1 1 1
ANT-SW
P53
MF2 MF1
UNIT
J4
J71 ANT3
TFAN 1 1
2 2
3 3
GND 4 4
NETWORK
J2
BOARD
TUIN
J1 ANT4
J81
TX/RX-A
J3
TUOT
W26
J301
J252
TX/RX-A
TUOT
J53 W27
J905
J251
GND GND
1 1 1 1
GND GND
TUIN 2 2 2 2
STB STB
3 3 3 3
CK CK
4 4 4 4
J351
DATA DATA
5 5 5 5
OE OE
RX-ANT 6 6 6 6
ANT4R ANT4R
7 7 7 7
+15V +15V
8 8 8 8
J52 W161-W170 J902
CTRL
GND GND
1 1 1 1
2M 2M
BOARD 2 2 2 2
J2
3R5M 3R5M
3 3 3 3
T15V 5M 5M
1 4 4 4 4
PW 18M 18M
2 5 5 5 5
PX 14M 14M
3 6 6 6 6
PY 24M 24M
4 7 7 7 7
PZ 10M 10M
5 8 8 8 8
T15V 7M 7M
6 9 9 9 9
AW 50M 50M
7 10 10 10 10
AX
8
AY
9
AZ
10 FILTER
J101
J904
W24
CTIN CTIN
UNIT
to MAIN unit J801
W7
PA200W
BOARD
J2
THML
1 1
IDH
2 2
IDL
3 3
PAT8
4 4
GND
5 5
J5
+15V
1 1
+15V
2 2
to MAIN unit J451
GND
3 3
GND
4 4
W171-W174
W1 EP501
+48V
1 1
+48V
+48V
2 2
1 NC 1 NC GND
3 3
7 NC 7 NC GND GND
4 4
2 H8V 2 H8V EP502
8 GND 8 GND
3 H8V 3 H8V
9 GND 9 GND
4 C15V 4 C15V
10 GND 10 GND
REG
5 C15V 5 C15V
11 GND 11 GND
UNIT
6 LG_PWR 6 LG_PWR
12 GND 12 GND
PA
UNIT
to LOGIC unit J824
MF1