Dsp-A/Dsp-B Boards - Icom IC-7800 Service Manual

11-18 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
C301 R302
GND
0.1 4.7k 1
C333 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
NJM5534MD
GND 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
V+ IC301
R372 C378 22p
NJM5534MD
100
1
R375
2 5
- 8 100
6
R373
3
2.7k
+
IC371
2.28V NJM5534MD 2.27V
ADS
A-12V
PD
IC1
TMS320C6713BFN
R11 1.5k
R201
0
D1R2V
D1R2V_SENS
PD
D3R3VL
Q1
DTC114EU
11 - 12
D3R3VL D3R3VL
IFIN
A5V
A15V
R412
4.7k
R504 100k
C506 47p
C403 C411 R503
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
R404 DGND BGND 47k
9 20
10
CAL DFS1
10 19 2
RSTN HPFE
11 18 R411 47k
SMODE2 DFS0
12 17 4 3
R406 SMODE1 MCLK
13 16 R410 47k
47k
LRCK FSYNC
14 15
SCLK SDATA
R407
1.5k
ADS MCLK_
A-12V A-12V
PD
1.43V 0.44V
3.15V
R12
D5V D5V
10k
IC551
AK4394
N1 MCLK_ 1
SCL0 DVSS CKS2/DZFR
L1 FSX1_ D5V 2
FSX1 DVDD CKS1
M2 DR1_ 3
DR1/SDA1 MCLK CKS0/DZFL
E1 /CAL R551 100 4
CLKS1/SCL1 PDN P/S
J1 DR0_ 5
DR0/AXR0 BICK VCOM
H2 DX0_ DX0_ 6
DX0/AXR1 SDATA AOUTL+
G1 7
TOUT0/AXR2 LRCK AOUTL-
G2 8
TINP0/AXR3 SMUTE/CSN AOUTR+
F1 9
TOUT1/AXR4 DF50 AOUTR-
L2 DX1_ 10
DX1/AXR5 DEM0/CCLK AVSS
M1 CLKR1_ 11
CLKR1/AXR6 DEM1/CDTI AVDD
M3 FSR1_ 12
FSR1/AXR7 DIF0 VREFH
H1 FSX0_ FSX0_ 13
FSX0/AFSX0 DIF1 VREFL
J3 FSR0_ 14
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
N20 BU9480F
ED8
P18 D3R3VL 8
ED9 VCC OUTR
P20 7
ED10 C772 BCLK REF
R19 6
ED11 0.1 SDATA GND
R20 5
ED12 LRCLK OUTL
T18
ED13
T20
ED14
T19
ED15
V4 D3R3VL
ED16
W4
ED17
Y3
ED18
V2
ED19
V1
ED20
U2
IC151
ED21
U1 TC7SHU04FU
ED22
U3 1 5
ED23
T1
ED24
T2 2
ED25
R3
ED26
R2 3 4
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
R3111N111A 4
1 5
OUT NC
2
VDD
3 4
VSS NC
D1R2V D1R2V
D1R2V_SENS D1R2V_SENS
PD PD
D3R3VL D3R3VL
IFIN IFIN
A5V A5V
A15V A15V
AGCDET AGCDET
8
IC501 V+
μPC4570G2
GND
4 IC452
SN74LVC1GU04DCKR
1 5 D3R3VL
NC VCC
2
A
3 4
GND Y
R451 1M
A-12V
4.63V
D5V
C607
0.0068
C608 22p
2.43V
1
28 2 5
-
C601 R602 R603 8
27 6
10 330 330
26 3
+
25 C553 10
IC601 C707 22p
24 C554 0.1
NJM5534MD
R701
23
680 1
22 2 5
- 8
C657
21 6
0.0068
2.70V
20 3
+
19
C658 22p R703 IC701
18
680 NJM5534MD
17
1
16 2 5
- 8
C651 R652 R653
15 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
+
C773
1
10 IC501
2 μPC4570G2 7
3 V+ IC601
NJM5534MD
4 GND
4
R171
100
A-12V
A15V A15V
IC171
TC7SH04FU
1 5 7 7
V+ IC701 V+ IC651
NJM5534MD NJM5534MD
2 GND GND
4 4
3 4
A-12V
J201
1.6V 0.3V
CLKIN
EA13 1 32
EA11 2 31
EA10 3 30
EA15 4 29
EA16 5 28
EA19 6 27
PD
C201 /AWE 7 26
0.1
D3R3VL 8 25
IC191 IC201
EA20 9 24
SN74AHC2G08HDCT AT29LV040A-20TC
EA18 10 23
8 1 8
EA17 11 22
EA14 12 21
7 2 7
EA9 13 20
R184 EA8 14 19
6 3 6
10k
EA7 15 18
EA6 16 17
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
GND to MAIN
HF50ACC322513
unit J360
A-12V -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
/ARE
RTTYOUT_ R963 100 RTD
EA12
DR1_ R971 100 DSPR
/CE1
NOISESQL_ R964 100 NSQL
ED7
FSR1_ R972 100 DFR
ED6
UNLOCK R965 100 DULS
ED5
VOICE_SQL_OUT R973 100 VSQ
ED4
to MAIN
GND1
ED3
unit J341
CLKX1_ R974 100 DSPCK
(DSP-A)
FM_TONE_DET R967 100 TNDB
ED2
DX1_ R975 100 DX1
to MAIN
ED1
FRWT_ R968 100 FRWT unit J361
ED0 (DSP-B)
FSX1_ R976 100 DFX
EA2
GND1
EA3 L962
GND1
EA4 HF50ACC322513
D3R3VL D3R3V
EA5
D3R3V
GND1
GND1
D1R2V_SENS D1R2V_SENS
D1R2V
L961
D1R2V
HF50ACC322513
D1R2V D1R2V
GND1
GND1