Service manual

FO-2970MU
6 – 6
1
2 6
4
3
5
BDEFG
I
HCA
BDEFG
I
HCA
1 2
6
4
3
5
–
+
–
+
–
+
–
+
C400
0.1
DG
C405
1000P
N.M.
N.M.
R396
BLM11A102
R397
BLM11A102
DG
N.M.
C401
N.M.
R391
44.2K
+5VA2
C129
1
C7
10/50
C397
R388
6.2K
C395
0.1(K)
IC1A
NJM2902M
–
+
+24VA
2
1
4
11
3
DGDGDG
C391
1000P
R387
10K
C394
1
R393
3.3K
R385
10K
VREF (2.5V)
R386
0
+5V
5
14
7
4
3
C411
1
+5VA2
C
B
E
C
B
E
DGDGDG
TEL OUT
R394
1K
MIC MUTE
Q104
DTC114
Q105
2SC2412
R395
4.7K
C392
DG
R330
3.3K
C56
DG
DG
C55
N.M
N.M
C54
N.M
N.M
N.M.
C390
N.M.
IC2B
BU4066
C409
0.1
9
10
8
4
11
TXOUT
R175
3.3K
DGDG
TXA2
R389
22K
+5VA
DGDG
R392
1K
R180
44.2K
C166
330P
C396
0.1(K)
GAINC
0
1
16
9
4
8
5 3
EXTSIG
RXIN
R176
3K
R182
62K
R214
R215
0
N.M.
R177
0
+5V
DG
C35
0.1
DG
IC7A
HCF4053
IC1C
NJM2902M
+24VA
C1
4.7/50
DG
6 5
4
7
11
+24VA
DG
C130
470P
R137
62K
C133
0.1
+5VA
D101
1SS355
K A
SIGRX
+5VA
R328
10K
R329
10K
DG
VREF (2.5V)
RCVOL
DG
13 12
4
14
11
+24VA
DG
C100
1000P
R101
47K
R327
3.3K
R100
1.5K
TELIN
C131
1
R138
1.5K
IC1B
NJM2902M
IC1D
NJM2902M
0
1
16
10
15
8
2 1
+5V
DG
IC7B
HCF4053
0
1
16
11
14
8
12 13
+5V
DG
IC7C
HCF4053
R183
27K
R218
11K
C197
0.1(K)
SPKRP
C165
0.1(K)
+5V
14 13
12
7
R212
390K
+5V
BZCONT
VOLC
14 12
11 10
7
14 6
89
7
DG
VOLB VOLA
R150
1M
R148
120K
R149
33K
IC2A
BU4066
IC2D
BU4066
IC2C
BU4066
C196
0.1(K)
C15
47/16
DG
+5V
R245
100K
4 2 3
C13
4.7/50
C12
1/50
DG DG DG
C230
330P
R244
150K
5
871
6
R367 R352
SP+
SP–
SPMUTE
BZOUT
C231
4700P
DG
R247
2K
DG
C199
0.01(K)
R217
20K
INH
VDD
VEE VSS
6
16
7 8
IC7D
HCF4053
DG
+5V
C36
0.1
DG
R178
10K
+5V
TP600
R179
10K
R246
20K
R213
3K
IC9
NJM2113
(9-2E) (9-1E)
(1-1C)
(1-6E) (1-6E) (1-6E)
(2-1C)
(1-1D)
(9-4A) (9-5A)
(9-5A)
(5-5H)
(5-3H)
(1-1C)
(5-2H) (1-1D)
(9-5A)
TXA1
(5-2H)
(1-1D) (9-5A)
Analog block 6/9