Icom IC-756PRO III Service Manual page 86

J2002 C2515 0.001
C2519 0.001
M5V_d
3R3V_d
C2506 0.0047 5VA
D-8A
R2503 100 DSKY D-5A
RTDT
R2510 100 D8VA
MSL1
R2505 100
CTFL
R2512 100
TXS
R2507 100
DSFR
R2514 100
AMS
R2509 100
R2516 100 MDAT
DSRS
R2511 100
R2518 100 DSFW
C2001
ACKS
to MAIN-A R2513 100
0.1
unit J202
R2520 100 MCK
CALS
R2515 100
C2516 0.0047
C2002
FMNS
R2517 100
0.1
MODS
R2519 100
C2003
R2526 100 DSDR
0.1
DPGI
R2521 100
NSQO
R2523 4.7k
M5V_d
C2004
C2035 1
0.1
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
C2005
DRAF 0.1
L2503
HF50ACC322513-B
C2006
-8V
0.1
L2506
HF50ACC322513-B
C2007
-5V
0.1
FMTL
L2504
HF50ACC322513-B
8V
C2008
0.1
R2001
10k
DBMS
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
R2054
100
IC2054B IC2054A
13 1 14
TC74VHC74FT TC74VHC74FT
5
4 12 9 2 5
6 D Q D Q
8
11 8 10 3 6
IC2053B
CK Q 9 CK Q
TC74HC02AF
10
IC2053C 7 4
TC74HC02AF
DLRC
DSP-A BOARD
1
TDI
2
TRST
3
VDD
4
TDO
5
TIMEXP
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
ADDR18
38
VDD
39
VDD
40
ADDR19
41
ADDR20
42
ADDR21
43
GND
44
ADDR22
45
ADDR23
46
ADDR24
47 MEASUREMENT CONDITIONS
VDD
48 RX Antenna input 60dBµ
GND
49 USB display 14.300MHz
VDD
50 SG 14.301MHz
ADDR25
51 AM display 14.300MHz
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
57
Trans Freq 14.300MHz
MS0
58
SW
59
BMS
60
ADDR28
M5V_d
C2054 0.1
IC2051
TC74VHC125FT
IC2052
TC7SET08FU
1 14
1G VCC
11 5 2 13
13 1 1A 4G
12 4 3 12
2 1Y 4A
4 11
2G 4Y
IC2053D
3 5 10
TC74HC02AF 2A 3G
6 9
2Y 3A
7 8
GND 3Y 25nS
10 - 3
L2001
D10F-A814AY-101K
3.2V
180
GND
C2025
179
DATA0 0.1
178
DATA1
177
DATA2
176
VDD
175
DATA3
C2024
174
0.1
DATA4
173
DATA5
172
GND
171
DATA6
C2023
170
0.1
DATA7
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
DD0
DATA16
157 DD1
DATA17
156
GND
155 DD2
DATA18
154 DD3
DATA19
153 DD4
DATA20
152
VDD
151 DD5
DATA21
150 DD6
DATA22
149 DD7
DATA23
148
GND
147
DATA24 C2021
146
DATA25 0.1
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
4 2 4 2 4 2
IC2042
3 3 3
TC7SH04FU
X2041 CR-568 IC2353
TC7SH04FU
40.8nS
1.6Vp-p R2041 1M
5VA
D-8A
D-5A
D8VA
C2061 R2063
0.1 100
M5V_d
5
1
4 DSDR R2102
DDTO 2 100
DSRS
IC2061 3
TC7SET08FU
IC2062
C2062
TC74VHC541FT
0.1
20 1
G1
VCC
DSKY
19 2
G2 A1
DFLO 18 3
A2
Y1
17 4
Y2 A3
16 5
A4
Y3
15 6 MCK
1
Y4 A5
DCLK 14 7
DSFW
A6 2
Y5
DRFL 13 8
MDAT 3
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
DA15 3 30
DSFW
A17
A15
DA12 4 29 DA14
A12 A14
DA7 5 28 DA13
A13
A7
DA6 6 27 DA8
A6 A8
DA5 7 26 DA9
A9
A5
DA4 8 25 DA11
A4 A11
DA3 9 24 DRD
G
A3
DA2 10 23 DA10
A2 A10
DA1 11 22 DBMS
E
A1
DA0 12 21 RDT7
A0 O7
RDT0 13 20 RDT6
IC2072
O0 O6
TC74VHC541FT
RDT1 14 19 RDT5
O1 O5
RDT2 15 18 RDT4 1 20
O2 O4 G1 VCC
16 17 RDT3 RDT0 2 19
VSS O3 A1 G2
RDT1 3 18
A2 Y1
RDT2 4 17
A3 Y2
RDT3 5 16
W2072 A4 Y3
RDT4 6 15
A5 Y4
RDT5 7
14
A6 Y5
RDT6 8 13
Y6
A7
RDT7 9 12
A8 Y7
10 11
Y8
GND
IC2461
L2461 BU9480F
100µH
1
8
VCC OUTR
ABCK 7 2 R2474
BCLK REF
100k
3
DDAD 6
SDATA GND
DLRC 5 4
LRCLK OUTL
W2471
R2377 R2481 R2483
1.5k 3.3k 1.8k
2 8
1
3
4
4
C2378
2
0.1 - 1
3 IC2471A
+
IC2441A M5218AFP
11 NJM2058M
Q2213
UNR9211J
RX FM FIL1:4.4V
C2476
IC2352
0.1
TC7SHU04FU
5
14 5
4 2 2 5 1
1 4
3 2 4 2
3
7 3
3
IC2053A IC2474 IC2475
R2353 1M
TC74HC02AF TC7SH04FU TC7SET08FU
R2366 100
3.3V
C2351 10p
A
B
M5V_d
C
D
E
F
G
H
5
1
4
2
IC2101
TC7SH32FU
3
R2092
5
100 1
AVEN
4
2
IC2091
S-80934CNMC-G84 3 IC2092
TC7S02FU
5
OUT CD
VDD
4
VSS NC
DPGI
C2066
0.1
5
1
4 RTDT
DFL2 2
IC2066
3
TC7SET08FU
C2065
0.1
5
1
4 CTFL
DFL1 2
DD0
IC2065
DD1
3
TC7SET08FU
DD2
DD3
DD4
DD5
DD6 C2063
DD7 0.1
5
1
NSQO
4
DFL3 2
IC2063
3
TC7SET08FU
I
R2450
R2472
1k
150k
J
D-5A
6
K
7
-
5 RX SG input
+
90dBµ 0.25V
60dBµ 0.6V
IC2471B
30dBµ 0.95V
M5218AFP
IC2473
TC4W53FU
FM 380mVp-p
AM 384mVp-p
USB 384mVp-p
C2478
1
L
D-8A
M
D8VA
N
R2485 100
M5V_d
O
P
FM:4.6V
Q
R
S