Icom IC-7800 Service Manual Addendum page 227

Aug. 2008
DSP-A/DSP-B BOARDS
DSP-A/B BOARD
D3R3VL
IFIN
IC331
TC7W53FK
1 8
COM VCC
2 7
INH CH0
3 6
VEE CH1
4 5
GND A
R343
2.7k
R301 C345
0 0.1
R332
2.2k R303 4.7k
C332 C306
7
10 22p
V+ IC301
C301 R302
GND
C333 0.1 4.7k 1 R305 C375
2 5 4
-
0.1 8 0 0.1
6
3
+
IC301
NJM5534MD
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
IFIN
A5V
A15V
R341 100
7
R401
V+ IC341
4.7k
GND NJM5534MD R344 820
ADS 4 C346 820p
R342 C348 22p
100
2.27V
1
R345
2 5
- 8 100
6
R371
3
100 +
IC341
NJM5534MD
7
V+ IC371
NJM5534MD
GND R374 820
4 C376 820p
R372 C378 22p R404
NJM5534MD
100 10
1 R375
2 5
-
8 100
6
R373 R406
3
2.7k + 47k
IC371
2.28V 2.27V
NJM5534MD
R407
1.5k
ADS
A-12V
PD
IC1
TMS320C6713BFN
R11 1.5k
R201
0
D1R2V
D1R2V_SENS
PD
D3R3VL
Q1
DTC114EU
66
D3R3VL D3R3VL
IFIN IFIN
A5V A5V
A15V A15V
AGCDET
R412
4.7k
R504 100k
C506 47p
IC501
C403 C411 R503 μPC4570G2
10 10 330 2
IC401 1 -
3
AK5394A
+
C405 C412
1 28 IC501
10 VREFL+ VREFR+ 10 μPC4570G2
2 27
VREFL- VREFR-
3 26
VCOML VCOMR
C406 0.22 4 25 C413 0.22
AINL+ AINR+
5 24
AINL- AINR-
R403 47k 6 23 C417 0.0022 A5V IC451
ZCAL VA
TC7S04FU
7 22
VD AGND R409
8 21 5 1
DGND BGND 47k
9 20
CAL DFS1
10 19 2
RSTN HPFE
11 18 R411 47k
SMODE2 DFS0
12 17 4 3
SMODE1 MCLK
13 16 R410 47k
LRCK FSYNC
14 15
SCLK SDATA
ADS MCLK_
A-12V A-12V
PD
4.63V
1.43V
3.15V 0.44V
R12
D5V D5V
10k
IC551
AK4394
N1 MCLK_ 1 28
SCL0 DVSS CKS2/DZFR
L1 FSX1_ D5V 2 27
FSX1 DVDD CKS1
M2 DR1_ 3 26
DR1/SDA1 MCLK CKS0/DZFL
E1 /CAL R551 100 4 25 C553
CLKS1/SCL1 PDN P/S
J1 DR0_ 5 24 C554
DR0/AXR0 BICK VCOM
H2 DX0_ DX0_ 6 23
DX0/AXR1 SDATA AOUTL+
G1 7 22
TOUT0/AXR2 LRCK AOUTL-
G2 8 21
TINP0/AXR3 SMUTE/CSN AOUTR+
F1 9 20
TOUT1/AXR4 DF50 AOUTR-
L2 DX1_ 10 19
DX1/AXR5 DEM0/CCLK AVSS
M1 CLKR1_ 11 18
CLKR1/AXR6 DEM1/CDTI AVDD
M3 FSR1_ 12 17
FSR1/AXR7 DIF0 VREFH
H1 FSX0_ FSX0_ 13 16
FSX0/AFSX0 DIF1 VREFL
J3 FSR0_ 14 15
FSR0/AFSR0 DIF2 BVSS
K3 MCLK_
CLKS0/AHCLKR0
G3 CLKX0_ CLKX0_
CLKX0/ACLKX0
F2
TINP1/AHCLKX0
H3 CLKS0_
CLKR0/ACLKR0
L3 CLKX1_
CLKX1/AMURE0
K18 ED0
ED0
K19 ED1
ED1
L18 ED2
ED2
L19 ED3
ED3
M19 ED4
ED4
M20 ED5
ED5
N18 ED6
ED6
N19 ED7 IC771
ED7
BU9480F
N20
ED8 C773
P18 D3R3VL 8 1
ED9 VCC OUTR 10
P20 7 2
ED10 C772 BCLK REF
R19 6 3
ED11 0.1 SDATA GND
R20 5 4
ED12 LRCLK OUTL
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
V9 EA8 CLKIN
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
IFIN
A5V
A15V
AGCDET
8
V+
GND
4 IC452
SN74LVC1GU04DCKR
1 5 D3R3VL
NC VCC
2
A
3 4
GND Y
A-12V
R451 1M
A-12V
D5V
C607
0.0068
C608 22p
2.43V
1
2 5
-
C601 R602 R603 8
6
10 330 330
3
+
10
IC601 C707 22p
0.1
NJM5534MD
R701
680 1
2 5
- 8
C657
6
0.0068
2.70V 3
+
C658 22p R703 IC701
680 NJM5534MD
1
2 5
- 8
C651 R652 R653
6
10 330 330
3
+
IC651
NJM5534MD
4.55V
A5V A5V
R801 56k
AGCOUT AGCOUT
C507 47p
R802
A15V
R805
100k
6 150
-
7
5
+
IC501
μPC4570G2 7
V+ IC601
NJM5534MD
GND
4
R171
100
A-12V
A15V A15V
5 7 7
V+ IC701 V+ IC651
GND NJM5534MD GND NJM5534MD
4 4
4
A-12V
J201
1.6V 0.3V
CLKIN
EA13 1 32 /ARE
EA11 2 31 EA12
EA10 3 30 /CE1
EA15 4 29 ED7
EA16 5 28 ED6
EA19 6 27 ED5
PD
C201
/AWE 7 26 ED4
0.1
D3R3VL 8 25 ED3
IC191 IC201
EA20 9 24
SN74AHC2G08HDCT AT29LV040A-20TC
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
J921
AGCDET
IFIN
GND
14.3mV 2.1V
GND
AFOUT
AGCOUT
CP3 GND
L924
GND
HF50ACC322513
to MAIN
A5V +A5V
unit J340
+A5V
(DSP-A)
CP1 GND
L922 to MAIN
GND
HF50ACC322513 unit J360
-12V
(DSP-B)
-12V
CP4 GND
L921
GND
HF50ACC322513
D5V +D5V
+D5V
CP2 GND
L925
GND
HF50ACC322513
A15V +15V
+15V
R901
0
Explanatory notes
VOLTAGE LINE
RX 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
GND1
GND1
GND1
R969 100 MCLK
/RESET R962 100 /DRES
CLKR1_ R970 100 DSPCK
RTTYOUT_ R963 100 RTD
DR1_ R971 100 DSPR
NOISESQL_ R964 100 NSQL
FSR1_ R972 100 DFR
UNLOCK R965 100 DULS
VOICE_SQL_OUT R973 100 VSQ
GND1 to MAIN
unit J341
CLKX1_ R974 100 DSPCK
(DSP-A)
FM_TONE_DET R967 100 TNDB
DX1_ R975 100 DX1 to MAIN
FRWT_ R968 100 FRWT unit J361
(DSP-B)
FSX1_ R976 100 DFX
GND1
L962
GND1
HF50ACC322513
D3R3VL D3R3V
D3R3V
GND1
GND1
D1R2V_SENS D1R2V_SENS
D1R2V
L961
D1R2V
HF50ACC322513
D1R2V D1R2V
GND1
GND1