Service manual

UX-B700U
FO-B1600U
Analog signal block/RF interface 6/7
6 – 6
A A
B B
C C
D D
E E
F F
G G
H H
I I
6 6 5 5 4 4
3 3 2 2 1 1
RCVOL
SPMUTESIGMUTE
CNLIUA-4
BZOUT1
ICM
CNSP-1
CNDSS-9
TELOUT
(6-6C)
ICM
RCVOL DTMFMUTE
TELOUT1
DTMFMUTE
SIGTX
SIGRX
CNSP-2
W-TONE
(3-4A)
DPON
CNLIUA-6
CNLIUA-8
CNDSS-10
SPOUT
CNDSS-11
CNDSS-13
VRE
(6-5I)
(6-5A)
(6-5I)
F
CNDSS-12
PREA
VREF
PREA
RLYCONT
(I-3I)
PREB
(6-5H)
PREB
(6-2A)
(6-5F)
TELOUT
CML
CNLIUA-7
VREF
VOLB VOLC VOLA
(3-2A) (3-2A) (3-2A)
+3.3V
+3.3V
DG DG
DGDG DG
DG
+3.3V
+3.3V
+3.3V
+5V
+5V+3.3V
DG
+3.3V
+5V +5V
+3.3V
+3.3V
+3.3V
DG
DG
DG
DG
DG
DG
(6-2A)
IC15
DG
(1-1F)
DG
DG
(3-2H)
DG
DG
(3-5A)
DG
(3-5A)
(3-3H)
(6-5A)
RXIN
(3-5A)
SP+
(3-2H)
DSSIN
TXOUT
DG
DG
N.M.
DG
(3-4A)
DG
(6-2F
(6-6E)
)
TELOUT
(3-5A)
N.M.
DG
(3-3H
(3-4A)
)
(3-5A)
N.M.
(3-5A)
DSSOUT
TELIN
SIGRX
DG
DG
SIGTX
SP-
DSSRX
DSSTX
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
7
8 4
DGDG
14
IC11
N.M.
DG
N.M.
DG
N.M.
N.M.
RT1N141C
RT1N141C
12
13
8 4
4066
43
5
C167
0.1u/16V-K
R111
R130
20K
R140
C138
R200
BLM18HG102SN1D
R141
R4 220K
R204
C168
R142
R144
R179
C115
4700p/50V
C13 0.1u/50V
R152
R180
R202
R128
1k
R178 39k
R5 100K
R129
Q101
BC
E
A C
X0 X1 X2 X3 X4 X5 X6 X7
X B
VDD
GND
VEE
E-
IC3
16 7 11 10 9 6 313
14 15 12
1 5 2 4
8
R127
27k
+ -
IC11 A
3 2
1
84
Q103
B
C
E
R154 7.5k
+ -
IC11 B
5 6
7
IC15D
10 11
12
R203
C113
R153 3.9k
C187
1u/10V
R151
Q105
BC
E
R138
C123
R139
C121
IC14A
4
5 3
9
7
6
8
16
C191
C141
R155
1M
C142
IC15C
89
6
R181
R143
C189
R201
D102
1SS355
C124
R183
IC14B
15
1 2
10
7
6
8
16
C145
C137
1u/10V
IC10
2
1
53
4
- +
NJM2113
IC8
5
4 3 2
1
7
8
6
ZD100
C146
R131 120k
C144
R159
IC9
2 1
53 4
R160
Q104
B
C
E
C2
47u/25V
12
R112
C186
BLM18HG102SN1D
IC14C
14
12 13
11
7
6
8
16
C192
D104
1SS355
R161
R132
C116
0.01u/50V
C188
C166
0.1u/16V-K
R156 0
R184
C122
R110
Q102
B
C
E
R158
R182
C143
0
C14 220p/50V
R114
C190
C114
0.022uK/50V
C125
C184
1u/10V
R115 0 C147
R109
C139
R113
R157
IC15A/B