Service manual
UX-B700U
FO-B1600U
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
DG
DG
DG
DG
DG
DG
Vref A
Vref A
Vref A
Vref A
Vref B
Vref B
DG
DG
DG
DG
DG
HSDG
+24VAVref A
DG
DG
CNLIUA-8
CNHJ-3
CNLIUA-3
CNHJ-4
CNLIUA-6
CNHJ-1
CNHJ-2
CNLIUA-4
CNLIUA-5
CNLIUA-7
IN/OUT
TELOUT
TELOUT
RXIN
RX+
TXOUT
RX-
TX+
TX-
( 1-4E)
MICMUTE
TELOUT
TELIN
TELMUTE
TELOUT
(2-3D)
(1608 & 2125)
TELOUT
(1608 & 2125)
L9
R-5C
R126
16k
C119
R131
3.3k(2125)
JP8
JP
C118
33p
R130
N.M
C115
C109
N.M
R122
N.M
C111
220p
C117
N.M
Q2
KTC3198GR-AT
B
C
E
C121
N.M
ZD10
N.M
C116
220p
R136
3.3k
R135
15k
R114
8.2k
R137
22k
C129
0
C125
2200p
C112
1000p
C127
1u(2125)
R115
3.3k
R108
13k
ZD11
HZ9C3
R119
1.5k
R116
3.3k
R123
R128
3.6k
R133
24k
R120
1k
E
Q102
RT1N436C
B
C
JP9
JP
R117
1K
C122
N.M
R127
0
C110
N.M
+
C9
N.M
R15
150(1/4W)
C131
1u(2125)
C126
N.M
C124
1000p
C130
0.1u/16V
C108
2200p
R111
8.2k
R138
39k
+ C11
47u/16V
L7
N.M
R132
8.2k
L8
N.M
C120
+
C17
22u/50V
+
C14
22u/50V
C104
1SS355
R107
220k
R124
R113
N.M
C123
1u
E
Q103
RT1N436C
BC
R125
1k
R14
100(1/4W)
C113
220p
JP10
N.M
C133
820p
Q104
RT1P141C
B
CE
IC101A
-
2
+
3
O
1
C128
N.M
C132
33p
HA17324A
-
6
+
5
O
7
C106
N.M
-
9
+
10
O
8
R134
0
R121
82k
-
13
+
12
O
14
R129
620
+
C12
N.M
+
C16
N.M
HA17324A
IC101B
IC101C
HA17324A
IC101D
HA17324A
TEL/LIU PWB circuit 2/3
6 – 11