Dsp-A Board - Icom IC-756PROIII Service Manual

10-2 DSP-A BOARD

J2002 C2515 0.001
C2519 0.001
C2506 0.0047
DSKY
R2503 100
R2510 100 RTDT
MSL1
R2505 100
CTFL
R2512 100
TXS
R2507 100
R2514 100 DSFR
AMS
R2509 100
MDAT
R2516 100
R2511 100 DSRS
DSFW
R2518 100
ACKS
to MAIN-A R2513 100
unit J202
MCK
R2520 100
R2515 100 CALS
C2516 0.0047
FMNS
R2517 100
MODS
R2519 100
DSDR
R2526 100
DPGI
R2521 100
NSQO
R2523 4.7k
M5V_d
C2035 1
W2508
AGRS DFL3
3R3V_d DFL2
DFL1
DFL0
DA0
DA1
DA2
DA3
J2001
DA4
90dBµ input:158mVp-p
DA5
DA6
DRIF DA7
DTIF
D5VA DA8
DA9
L2502
DA10
HF50ACC322513-B
DA11
DA12
DA13
DMAF DA14
to MAIN-A DA15
unit J201 DTAF
AGC DA16
DRAF
L2503
HF50ACC322513-B
-8V
L2506
HF50ACC322513-B
-5V
FMTL
L2504
HF50ACC322513-B
8V
DBMS
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
R2054
100
IC2054B IC2054A
TC74VHC74FT 13 TC74VHC74FT
5
4 12 9 2
6 D Q D
8
11 8 10 3
IC2053B
CK Q 9 CK
TC74HC02AF
10
IC2053C
TC74HC02AF
DSP-A BOARD
M5V_d
3R3V_d
5VA
D-8A
D-5A
D8VA
C2001
0.1
C2002
0.1
C2003
0.1
1
TDI
2
TRST
3
VDD
4
TDO
C2004
5
TIMEXP
0.1
6
EMU
7
ICSA
8
FLAG3
9
FLAG2
10
FLAG1
11
FLAG0
12
GND
13
ADDR0
14
ADDR1
15
VDD
16
ADDR2
17
ADDR3
18
ADDR4
19
GND
20
ADDR5
21
ADDR6
22
ADDR7
23
VDD
24
ADDR8
25
ADDR9
26
ADDR10
27
GND
28
ADDR11
29
ADDR12
30
IC2001
ADDR13
31 ADSP-21061LKS-160
VDD
32
ADDR14
33
ADDR15
34
GND
35
ADDR16
36
ADDR17
37
C2005
ADDR18
38
0.1
VDD
39
VDD
40
ADDR19
C2006 41
0.1 ADDR20
42
ADDR21
43
GND
44
ADDR22
C2007
45
0.1 ADDR23
46
ADDR24
47 MEASUREMENT CONDITIONS
VDD
48
RX Antenna input 60dBµ
GND
49 USB display 14.300MHz
VDD
50 SG 14.301MHz
ADDR25
C2008
51 AM display 14.300MHz
0.1 ADDR26
52 SG 14.300MHz 1kHz 70% MOD
ADDR27
53 FM display 14.300MHz
GND
54 SG 14.300MHz 1kHz 3.5kHz DEV
MS3
55
TX MIC input 1m Vrms
MS2
56 MIC VR Center
MS1
R2001
57 Trans Freq 14.300MHz
MS0
10k
58
SW
59
BMS
60
ADDR28
M5V_d
C2054 0.1
IC2051
TC74VHC125FT
IC2052
1 14
TC7SET08FU
1 14
1G VCC
5 11 5 2 13
13 1
Q 1A 4G
12 4 3 12
4A
2 1Y
6
4 11
Q 2G 4Y
IC2053D
3 5 10
TC74HC02AF 2A 3G
6 9
7 4
2Y 3A
7 8
GND 3Y
DLRC
10 - 3
3.2V
180
GND
C2025
179
DATA0 0.1
178
DATA1
177
DATA2
176
VDD
175
DATA3
C2024
174
DATA4 0.1
173
DATA5
172
GND
171
DATA6 C2023
170
DATA7 0.1
169
DATA8
168
VDD
167
DATA9
C2022
166
DATA10 0.1
165
DATA11
164
GND
163
DATA12
162
DATA13
161
DATA14
160
VDD
159
DATA15
158
DATA16
157
DATA17
156
GND
155
DATA18
154
DATA19
153
DATA20
152
VDD
151
DATA21
150
DATA22
149
DATA23
148
GND
147
DATA24
C2021
146
0.1
DATA25
145
DATA26
144
VDD
143
VDD
142
DATA27
C2020
141
DATA28 0.1
140
DATA29
139
GND
138
DATA30
C2019
137
DATA31 0.1
136
DATA32
135
GND
134
VDD
133
VDD
132
DATA33 C2018
131
DATA34 0.1
130
DATA35
129
NC
128
GND
C2017
127
DATA36 0.1
126
DATA37
125
DATA38
124
VDD
123
DATA39
122
DATA40
121
DATA41
3R3V_d
IC2041
TC7SHU04FU
5 5 5
2 2 2
4 4 4
IC2042
3 3 3
TC7SH04FU
25nS
IC2353
X2041 CR-568
TC7SH04FU
1.6Vp-p R2041 1M
5VA
D-8A
D-5A
D8VA
L2001
C2061 R2063
D10F-A814AY-101K
0.1 100
M5V_d
5
1
4
DSDR
DDTO 2
IC2061
3
TC7SET08FU
IC2062
C2062
TC74VHC541FT
0.1
20 1
VCC G1
DSKY
19 2
G2 A1
DFLO 18 3
Y1 A2
17 4
A3
Y2
16 5
Y3 A4
15 6
MCK
Y4 A5
DCLK 14 7
DSFW
A6
Y5
DRFL 13 8
MDAT
Y6 A7
DRXD 12 9 DSFR
Y7 A8
DTFL 11 10
Y8 GND
R2071
100
IC2071
SC-1414
1 32
VPP VCC
DA16 2 31 DSFR
A16 A18
3 30
DA15 DSFW
A15 A17
DA12 4 29 DA14
A14
A12
DA7 5 28 DA13
A7 A13
DA8
DD0 DA6 6 27
A6 A8
DD1 DA5 7 26 DA9
A5 A9
DA4 8 25 DA11
A11
A4
DD2 DA3 9 24 DRD
A3 G
10 23 DA10
DD3 DA2
A2 A10
DD4 DA1 11 22 DBMS
E
A1
DA0 12 21 RDT7
A0 O7
RDT6
DD5 RDT0 13 20
O0 O6
DD6 RDT1 14 19 RDT5
O1 O5
DD7 RDT2 15 18 RDT4 1
O4
O2
16 17 RDT3 RDT0 2
VSS O3
RDT1 3
RDT2 4
RDT3 5
W2072
RDT4 6
RDT5 7
RDT6 8
RDT7 9
10
IC2461
L2461 BU9480F
100µH
1
8
VCC OUTR
ABCK 7 2
BCLK REF
DDAD 6 3
SDATA GND
DLRC 5 4
LRCLK OUTL
R2377 R2481
R2483
1.5k 3.3k 1.8k
4
C2378
2
0.1 - 1
3
+
IC2441A
11 NJM2058M
Q2213
UNR9211J
RX FM FIL1:4.4V
IC2352
TC7SHU04FU
5
14
2
4 2 5
1
3 2 4
3
7
3
IC2053A IC2474
R2353 1M
40.8nS
TC74HC02AF TC7SH04FU
R2366 100
3.3V
C2351 10p
A
B
M5V_d
C
D
E
F
G
H
R2102
100
5
DSRS 1
4
2
IC2101
TC7SH32FU
3
R2092
5
100
1
AVEN
4
2
IC2091
3 IC2092
S-80934CNMC-G84
TC7S02FU
1 5
CD
OUT
2
VDD
3 4
VSS NC
DPGI
C2066
0.1
5
1
4 RTDT
DFL2 2
IC2066
3
TC7SET08FU
C2065
IC2072 0.1
TC74VHC541FT
5
20
VCC 1
G1
CTFL
19 4
A1 G2 DFL1 2
18 DD0
A2 Y1
IC2065
17 DD1
3
Y2
A3 TC7SET08FU
16 DD2
A4 Y3
15 DD3
A5 Y4
14 DD4
A6 Y5
13 DD5
Y6
A7
12 DD6
C2063
A8 Y7
11 DD7 0.1
GND Y8
5
1
NSQO
4
DFL3 2
IC2063
3
TC7SET08FU
I
R2450
R2472
1k
150k
R2474
J
100k D-5A
6 K
- 7
5 RX SG input
+
90dBµ 0.25V
W2471
60dBµ 0.6V
IC2471B
30dBµ 0.95V
M5218AFP
IC2473
TC4W53FU
8
2
1
3
4
IC2471A
FM 380mVp-p
M5218AFP
AM 384mVp-p
USB 384mVp-p
C2478
1
L
D-8A
M
D8VA
N
R2485 100
M5V_d
O
P
C2476
0.1
5
1
4
2
FM:4.6V
3
IC2475
TC7SET08FU
Q
R
S