Icom IC-7800 Service Manual page 200

SCOPE UNIT (3)
D40M
RESET
+3R3L
1.29V
D201
+3R3V_
1SR154
IC201
SI-3012KS
+1R2V
IC505
2.49V
AD1582BRT
+3R3L +2R5V
I O
ADJ
+2R5V
+5VLD
3.21V
L502
R500
0
SCOPE
UNIT (1)
48
NC
47
NC
46
D40M
NC
45
RESET
NC
44
RESET
NC
S3IF+ 43
IN+
42 AD7650AST
NC
41
NC
40
NC
GND 39
IN-
38
REFGND
+2R5V 37
+3R3V_ REF
+3R3L
+5VLD
S3IF+
GND
0.0V
RESET
3VH
3VH
CLKX1
CLKX1
DR1
DR1
FSX1
FSX1
DX1
DX1
FSR1
FSR1
+2R5V
+2R5V
+3R3L
+1R2V
D40M
RESET
R622
0
+3R3L
J671
A11 1 32
A9 2 31 A10
A8 3 30
+1R2V A13 4 29
A14 5 28
6 27
7 26
8 25
IC671
9 24
AT49BV001AN-55TI
A16 10 23
A15 11 22
A12 12 21
A7 13 20 A0
A6 14 19 A1
A5 15 18 A2
A4 16 17 A3
+1R2V
Explanatory notes
VOLTAGE LINE
MESUREMENT CONDITIONS
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
ANT(RX): no input
(TX): no modulation
SCOPE ATT: 0dB
Digital tester
range: input impedance
R501
5VD
100 3.1V
0.4V
13 R503 10k IC604 3VH
D4/EXT/INT 14
TC7SH04FU
R504 10k
D5/INVSNC 15
10k
R505 5 1
D6/INVSCLK 16
10k TOUT1
R506 2
D7/RDC/SDIN 17
4 3
OGND 18
IC501
OVDD 19
C665 0.1
5VD
DVDD 20
DGND 21
DR0
D8/SDOUT 22
CLKX0 CLKX0
D9/SCLK 23
FSX0
D10/SYNC 24
D11/RDERROR
DR0
FSX0
R507
100
5 1
2
RESET 4 3
IC502
TC7S04FU CNVST
DVDD
3VH
CLKX1
DR1
FSX1
DX1
FSR1
+3R3L
+1R2V
11 - 16
D40M
40M
RESET
DVDD
D7
D6
D5
D4
D3
D2
D1
D0
Y18
EA20
W17
EA19
A16 Y16
EA18
A15 V16
EA17
A14 Y15
EA16
A13 W15
EA15
A12 Y14
EA14
A11 W14
EA13
A10 V14
EA12
A9 W13
EA11
A8 V10
EA10
Y9
A7
EA9
A6 V9
EA8
A5 Y8
EA7
A4 W8
EA6
A3 V8
EA5
A2 W7
EA4
A1 V7
EA3
A0 Y6
EA2
N3
ED31
P3
ED30
P2
ED29
P1
ED28
R2
ED27
R3
ED26
T2
ED25
T1
ED24
U3
ED23
U1
ED22
U2
ED21
V1
ED20
V2
ED19
Y3
ED18
W4
ED17
V4
ED16
T19
ED15
T20
ED14
T18
ED13
R20
ED12
R19
ED11
P20
ED10
P18
ED9
N20
ED8
D7 N19
ED7
D6 N18
ED6
M20
D5
ED5
D4 M19
ED4
D3 L19
ED3
D2 L18
ED2
D1 K19
ED1
D0 K18
ED0
TOUT1 F1
TOUT1
40M R635 F2
TINP1
3VH 47 G1
TOUT0
R609 10k G2
TINP0
E1
CLKS1
M1
CLKR1
CLKX1 L3
CLKX1
M2
DR1
DR1
FSX1 L2
DX1
DX1 M3
FSR1
FSR1 L1
FSX1
40M K3
CLKS0
H3
R636 47
CLKR0
CLKX0 G3
CLKX0
DR0 J1
DR0
H2
DXO
J3
FSR0
FSX0
DVDD
+3R3L
FI501
EXCCET103U
VSS
+3R3L
+3R3L
+1R2V
D40M
40M
1
2
3
GND1
DVDD
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
IC601
VSS
TMS320C6711DGDP200
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
DVDD
CVDD
+3R3L
+3R3L
+1R2V
D40M
IC607 DVDD
R3111N111A
5
OUT NC
VDD
4
VSS NC
VSS VSS
DVDD
IC602
SN74LVC1G04DCK
4 3 4 3
40M
2 2
5 1 5 1
IC603
CVDD SN74LVC1G04DCK
R610
1M
VSS
M12
M11
M10
M9
L12
L11
L10
L9
K12
K11
K10
K9
J12
J11
J10
J9
Y19
Y13
Y2
Y1
W20
W16
W11
W5
W1
U20
U17
U13
U9
U8
U4
T17
T4
P19
P17
P4
N17
N4
M17
M4
K20
K2
J4
H17
H4
G17
G4
F19
E17
E4
E2
D17
D13
D8
D4
C9
C8
B20
B15
B11
B4
B1
A20
A19
A14
A11
A2
A1
L552
+3R3L
L551
SLF6028T
VSS
+3R3L +3R3L
+3R3L
+1R2V