Icom IC-7800 Service Manual Addendum page 228

Aug. 2008
DSP-TX BOARD
DSP-TX BOARD
D3R3VL
AFIN
R304 100
R341
7 7
V+ IC301 V+ IC341
GND NJM5534MD GND NJM5534MD
4 4
R306 R342
100 100
R301 C345 R343
R371
1k 1 10k
100
7
R303 4.7k
V+ IC371
NJM5534MD
GND
C306
4
22p
C301 R302 R372
100
1 4.7k 1
2 5
- 8
6
3
+ R305 C375 R373
IC301 1k 1 10k
NJM5534MD
2.27V
3.15V
A-12V
PD
L1
HF50ACC322513
PD
L3
10μ
L2
SLF6028T
A2
VSS
A11
VSS
A14
VSS
A19
VSS
A20
VSS
B1
VSS
B4
VSS
B15
VSS
B20
VSS
C6
VSS
C8
VSS
C9
VSS
D4
VSS
D8
VSS
D13
VSS
D17
VSS
E2
VSS
E4
VSS
E17
VSS
F19
VSS
G4
VSS
G17
VSS
H4
VSS
H17
VSS
J4
VSS
J9
VSS
J10
VSS
J11
VSS
J12
VSS
K2
VSS
K9
VSS
K10
VSS
K11
VSS
K12
VSS
K20
VSS
L9
VSS
L10
VSS
L11
VSS
L12
VSS
M4
VSS
M9
VSS
M10
VSS
M11
VSS
M12
VSS
M17
VSS
N4
VSS
N17
VSS
P4
VSS
P17
VSS
P19
VSS
T4
VSS
T17
VSS
U4
VSS
U8
VSS
U9
VSS
U13
VSS
U17
VSS
U20
VSS
W1
VSS
W5
VSS
W11
VSS
W16
VSS
W20
VSS
Y1
VSS
Y2
VSS
Y13
VSS
Y19
VSS
Y20
VSS
FI101
EXCCET103U
R181 10k
R182 10k
D1R2V
D1R2V_SENS
PD
D3R3VL
D3R3VL
AFIN
A15V
100
R401
4.7k
R344 4.7k
C346 120p
C403
C348 22p 10
2.27V
IC401
AK5394A
1
R345 C405
2 5 1 28
- 8 100 10 VREFL+ VREFR+
6 2 27
VREFL- VREFR-
3 3 26
+ VCOML VCOMR
IC341 C406 0.22 4 25
AINL+ AINR+
NJM5534MD
5 24
AINL- AINR-
R404 R403 47k 6 23
ZCAL VA
10
R374 4.7k 7 22
VD AGND
C376 120p 8 21
DGND BGND
9 20
C378 22p CAL DFS1
R406
10 19
47k RSTN HPFE
2.27V 11 18
1 R375 SMODE2 DFS0
2 5 12 17
- 8 100 SMODE1 MCLK
R407 1.5k
6 13 16
LRCK FSYNC
3 14 15
+ SCLK SDATA
IC371
R414 220
NJM5534MD
CLKS0_
A-12V
PD
IC1
TMS320C6713BFN
R11 1.5k R201
0
D1R2V
D1R2V_SENS
PD
D3R3VL
D3R3VL
AFIN AFIN
A5V A5V
A15V A15V
R903
0 R412
4.7k
2.27V
R801 4.7k
C801 0.001
C411 10 C808 22p
1
C412 R802
5 2
10 100 8 -
6
R803
3
10k
+
C413 0.22 IC801
NJM5534MD
A5V IC451 2.27V
TC7S04FU
R831 4.7k
R409
5 1 C831 0.001
47k
C838 22p
2
R411 47k
R832 1
4 3 5 2
100 8 -
R410 47k 6
R833
3
+ 10k
IC831
NJM5534MD
A-12V A-12V
PD
4.57V
1.43V 0.44V
R12
D5V D5V
10k
N1
SCL0
L1 FSX1_ IC551
FSX1
AD1854JRSZRL
M2 DR1_
DR1/SDA1
E1 1 28
CLKS1/SCL1 DGND DVDD
J1 DR0_ MCLK_ 2 27 DX0_
DR0/AXR0 MCLK SDATA
H2 DX0_ 3 26 R551 220 CLKS0_
DX0/AXR1 CLATCH BCLK
G1 CWSTAT_ 4 25 FSX0_
TOUT0/AXR2 CCLK L/RCLK
G2 KEYIN_ 5 24 /CAL
TINP0/AXR3 CDATA PD/RST
F1 6 23
TOUT1/AXR4 384/256 MUTE
L2 DX1_ 7 22
DX1/AXR5 X2MCLK ZEROL
M1 CLKR1_ 8 21
CLKR1/AXR6 ZEROR IDPMO
M3 FSR1_ 9 20
FSR1/AXR7 DEEMP IDPMI
H1 FSX0_ D5V 10 19
FSX0/AFSX0 96/48 FILTB
J3 FSR0_ 11 18
FSR0/AFSR0 AGND AVDD
K3 MCLK_ 12 17
CLKS0/AHCLKR0 OUTR+ OUTL+
G3 13 16
CLKX0/ACLKX0 OUTR- OUTL-
F2 14 15
TINP1/AHCLKX0 FILTR AGND
H3 CLKS0_
CLKR0/ACLKR0
L3 CLKX1_
CLKX1/AMURE0
K18 ED0
ED0
K19 ED1
ED1
L18 ED2
ED2
L19 ED3
ED3
R905
M19 ED4
ED4 0
M20 ED5
ED5
N18 ED6
ED6
N19 ED7
ED7
N20
R904
ED8
P18 0
ED9
P20
ED10
R19
ED11
R20
ED12
T18
ED13
T20
ED14
T19
ED15
V4 D3R3VL
ED16
W4
ED17
Y3
ED18
V2
ED19
V1
ED20
U2
IC151 IC171
ED21
U1 TC7SHU04FU TC7SH04FU
ED22
U3 1 5 1
ED23
T1
ED24
T2 2 2
ED25
R3
ED26
R2 3 4 3
ED27
P1
ED28
P2
ED29
X151
P3
ED30 CR-754
N3
ED31
Y6 EA2
EA2
R152
V7 EA3
EA3 1M
W7 EA4
EA4
V8 EA5
EA5
W8 EA6
EA6
Y8 EA7
EA7
CLKIN
V9 EA8
EA8
Y9 EA9
EA9
V10 EA10
EA10
W13 EA11
EA11
V14 EA12
EA12
W14 EA13
EA13
Y14 EA14 PD
EA14
W15 EA15
EA15
Y15 EA16
IC181
EA16
V16 EA17 SN74AHC2G08HDCT
EA17
Y16 EA18 1
EA18
2
R183
3
10k
IC203
4
R3111N111A
1 5
OUT NC
2
VDD
3 4
VSS NC
D1R2V D1R2V
D1R2V_SENS D1R2V_SENS
PD PD
D3R3VL D3R3VL
AFIN
A5V
A15V
R804 100 R874 100
7 7
V+ IC801 V+
IC871
GND NJM5534MD NJM5534MD GND
4 A-12V 4
R805 R875
100 100
ANVOX
C803
R834
10
100
A5V A-12V
7
R871 4.7k
V+ IC831
NJM5534MD
GND
C875
A-12V
4
22p
R835 R872
100
1 4.7k
5 2
8 -
6
3
C833 +
10 IC871
NJM5534MD
A-12V
D5V
C607
0.0068
C608 22p
1
2 5
C601 R602 R603 - 8
2.17V
6
1 330 330
3
+
IC601 C707 22p
NJM5534MD
R701
680 1
2 5
- 8
C657
6
0.0068
3
+
C658 22p R703 IC701
680 NJM5534MD
1
A5V 2 5
- 8
C651 R652 R653
6
1 330 330
3
+
IC651
NJM5534MD
2.22V
A5V A5V
A15V
7
V+ IC601
GND NJM5534MD
4
A-12V
R171
100
A15V A15V
7 7
V+ IC701 V+ IC651
GND NJM5534MD GND NJM5534MD
5 4 4
4 A-12V
IC452
SN74LVC1GU04DCKR
1 5 D3R3VL
NC VCC
2
A
3 4
GND Y
C452
0.001
R451 1M
J201
CLKIN
EA13 1 32 /ARE
EA11 2 31 EA12
1.6V 0.3V
EA10 3 30 /CE1
EA15 4 29 ED7
EA16 5 28 ED6
EA19 6 27 ED5
PD
C201
/AWE 7 26 ED4
0.1 IC201
D3R3VL 8 25 ED3
IC191 AT29LV040A-20TC
EA20 9 24
SN74AHC2G08HDCT
EA18 10 23 ED2
8 1 8
EA17 11 22 ED1
EA14 12 21 ED0
7 2 7
EA9 13 20 EA2
R184 EA8 14 19 EA3
6 3 6
10k
EA7 15 18 EA4
EA6 16 17 EA5
5 4 5
D1R2V
D1R2V_SENS
D3R3VL
3.15V
67
J921
AFIN
ANVOX
GND
1.2mV
GND
TX36K
GND
CP3 GND
4.56V
L924
GND
HF50ACC322513
A5V +A5VT
+A5VT
CP1 GND to MAIN
L922 unit J380
GND
HF50ACC322513
-12V
-12V
CP4 GND
L921
GND
HF50ACC322513
D5V +D5VT
+D5VT
CP2 GND
L925
GND
HF50ACC322513
A15V +15V
+15V
R901
0
Explanatory notes
VOLTAGE LINE
TX LINE
MESUREMENT CONDITIONS
voltage at RX
frequency: 14.1 MHz
mode: J3E(USB)
ANT(RX): no input
Digital tester
range: input impedance
200mV: 100MΩ
2V: 11MΩ
20V,200V,1000V: 10MΩ
J961
GND1T
GND1T
GND1T
R969 100 MCLK
/RESET R962 100 DRES
CLKR1_ R970 100 DSPCK
KEYIN_ R963 100 DSKY
DR1_ R971 100 DSPR
CWSTAT_ R964 100 CTFL
FSR1_ R972 100 DFRT
ANTIVOXOUT_ R976 100 DAVOX
CLKX1_ R973 100 DSPCK
VOXOUT_ R967 100 CVOX
DX1_ R974 100 DX1T
FRWT_ R968 100 FRWT
to MAIN
FSX1_ R975 100 DFXT unit J381
GND1T
L962
GND1T
HF50ACC322513
D3R3VL D3R3V
D3R3V
GND1T
GND1T
D1R2V_T
D1R2V_T
D1R2V_SENS DIRV_SENS_T
D1R2V_T
L961
GND1T
HF50ACC322513
D1R2V GND1T
GND1T
GND1T