Icom IC-756PROIII Service Manual page 101

A
B
C
R2306
R2309
10k
D
100
E 4
2
F 1 -
3
+
G
IC2301A
RX 90dBµ input:200mVp-p 8
BA15532F
TX AM : 1.2V
FM : 970mV
SSB :174mV R2329
150
H
C2321
0.0068
5V
10.42µS
ALRC
ABCK
ADSD
5V
162nS
AVEN
MSL1
CALS
IC2348
TC7SET08FU
Explanatory notes
ACKS
VOLTAGE LINE
TX LINE
RX LINE IC2341A
TC74VHC00FT
COMMON LINE
IC2341D
TC74VHC00FT
12
11
13
R2361
220
AGC IC2344A
I
TC74VHC74FT
1 14
J
D-5A
K
R2362
5 220
2
D Q
3 6
CK Q
7 4
C2340
0.0047
DSRS
DLRC
ABCK
DDAD
DRAF
L
IC2351
D-8A AD1854JRSZRL
M
D8VA
N
M5V_d
O
P
TXS
5VA
D-8A
D-5A
D8VA
Q
R
S
IC2291
TC4W53FU
IC2301B
R2304
BA15532F
10k R2302 C2301
C2308
R2308 10k 10
6
10k 10 1
7 -
2
5
+ W2302 W2301
3
4
2.2V
R2321 100
IC2321
3.7V
CS5396-KS
R2323
1 28 68
VREF AGND
27
2
VCOM AINR+
3 26
AGND AINR-
4 25
R2324
AINL+ AGND
4.6V
5 24 68
AINL- VA
6 23
ADCTL VL
7 22
R2325
MCLKA LGND
8 21
4.7
TSTO1 TSTO2
20
9
DACTL MCLKD
10 19
CAL CS/PON
11 18
VD CDIN/DFS
12 17
DGND CCLK/(S/M)
13 16
LRCK SDATA1
14 15
SCLK SDATA2
Q2321
2SJ381
R2327
Q2322
2.2k
2SJ381
C2328
100
4.6V
D8VA
D-5A
5VA
M5V_d
W2321
IC2342
C2345
5
TC74VHC4040FT 10
0.1
1 W2322 CLK
4
2
W2323 11
R2349
RST
56
3
W2324
W2504
14
1 W2509
3
2
W2510
R2340
56
7
W2511
W2472
W2463
R2344
IC2344B
R2347
100
TC74VHC74FT C2348 C2347 100
0.1 0.1
13
R2363 5
12 9 220 5
1
D Q 4 1
2 4
2
11 8 R2364
R2365
CK Q 3 220
56
3
10
IC2345
IC2346
TC7SH32FU
TC7SET08FU
C2346
0.1
R2394
100k
D2373
MA2S111
TX 4.2V
RX 0V
C2281
0.47
8
7
6
5
IC2281C IC2281D
NJM2058M NJM2058M
9
8 13
-
14
10 -
+
12
+
R2256 R2255
R2254
22k 22k
22k
13pin
C2218
R2221
0.0022
150k
16pin
C2220
R2223 R2222 R2219
10 6
W2201 7
- 82k 82k 390k
5
+
IC2211B
M5218AFP
R2346
8 6
100
1 5
CK Q
2 3
D Q
16
9
7 4
Q1
7
Q2
6
Q3 IC2343
5
TC7WH74FU
Q4
3
Q5
2
Q6 C2425
4 IC2341C
Q7 0.22
TC74VHC00FT
13
Q8
12 9
8
Q9
14 10
Q10
15
Q11
1
Q12
4
6
5
8
IC2341B
TC74VHC00FT
IC2347
TC74HC390AF
IC2302
TC4W53FU
C2480
10
R2350
27k
R2356 C2367 R2351
2.2k 1 10k
6
7
-
5
+
IC2371B
R2357 µPC4570G2
2.2k 8
2
1
-
3
+
IC2371A
R2360
4 µPC4570G2
2.2k
RX AM 320mVp-p
USB 340mVp-p
FM 170mVp-p
TX AM 200mV
780mV
TX 4.2V
USB 100mVp-p
RX 0V
FM 1Vp-p
5VA
D-8A
D-5A
D8VA
R2242 R2241 R2217
220k 10k 470k
IC2211A
IC2281B
M5218AFP
NJM2058M
R2253 R2252
R2244
8
6 2
22k 22k 6.8k
1
7 - -
5 3
+ +
4
Q2211
UNR9211J C2214 R2216
10 1.5k
R2257
1k
Q2202
UNR9211J
Q2201
UNR9211J
R2577
C2573
100
0.1
R2571 R2572 R2573
82k C2580
82k 82k
5
0.1
7
+
6
-
C2571
0.22
IC2472B
M5218AFP
IC2281A
IC2441B
NJM2058M
NJM2058M
R2442 R2443
4 6
2 - 7
10k 10k
1 5
-
+
3
+ R2445
R2444
10k
11 10k
C2311
0.22
C2387
C2383
0.0027
0.0015
R2385
R2384
C2395 R2382 R2383
13 1k
0.22 1k 1k 1k 14
-
12
+
IC2381D
µPC4574G2
TX FM
2µS
SSB
4Vp-p
W2401
AM
IC2372
BU4053BCFV
16
12 14
X0 X
R2403
13
X1
15k
15
2
Y0 Y
1
R2402
Y1
5 4
15k
Z0 Z
3
Z1
6
INH
11
A
10
B
9
R2404
C
22k
7 8
5VA
D-8A
D-5A
D8VA
10 - 4
TX FM/AM/SSB:30mVp-p
IC2201
BU4053BCFV
16
14
12
X0 X
13
X1
2 15
Y0 Y
1
Y1
C2211
5 4 DTAF
0.0047 Z0 Z
3
Z1
6
INH
11
A
10
B
9
C
7 8
W2202
D8VA
D-5A
RX SG
R2580
MOD 88.5Hz ±0.75kHz Dev
470k
400mVp-p
C2582
100p 8
R2575 R2581
3 11.3mS
1 FMTL
120k 100k +
2
-
IC2472A
4
M5218AFP
TX,SSB
R2448
100mVp-p
10k
IC2441C IC2441D
1mS
NJM2058M NJM2058M
R2447
R2453
9
10k
8 13
- 6.8k
10 - 14 DMAF
+ 12
+
R2446
10k
DTIF
R2388
10k
R2387
R2386 4
9 2
8 10k
1k - 6 - 1
10 7 3
-
+ +
5
+
11
IC2381C IC2381B IC2381A
µPC4574G2
µPC4574G2 µPC4574G2
2.4Vp-p
200mVp-p
2V
500mV
IC2401
MAX293CWE
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
DSP-A BOARD