Sharp UX-B20 - Page 78

UX-B20U/UX-B20C/B25C
6 – 12
2. LIU PWB Circuit (2/3)
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
HSDG
Vref A
DG
Vref A
DG
DG
DG
Vref A
Vref B
DG
DG
DG
DG
DG
DG
Vref B
Vref A
DG
Vref A
DG
24VA
DG
DG
DG DG
CNLIU-12
CNLIU-8
CNHJ-1
CNLIU-7
TELOUT
CNLIU-6
CNHJ-2
IN/OUT
CNLIU-13
TELOUT
CNHJ-4
CNHJ-3
CNLIU-9
TX-
( 1-1D)
RX-
TELMUTE
RXIN
TX+
TELOUT
MICMUTE
TELIN
TELOUT
TXOUT
RX+
TELOUT
(1608&2125)
(1608&2125)
L1
R117
16k
C104
JP3
JP
R116
3.3k
R11
100(1/4W)
C123
33p
R132
C130
R106
C125
220p
C139
Q2 KTC3198GR-AT
B
CE
C138
ZD6
C128
R114
3.3k
R113
15k
R128
10k
C135
2200p
R112
22k
C122
0
C113
2200p
C124
1000p
C105
0
R130
3.3k
D4
R129
13k
ZD4
HZ9C3
R133
620
R126
3.3k
R107
R122
82k
R111
24k
C137
N.M.
R118
1k
E
Q105
RT1N436C
B
C
JP9
JP
R121
0
C129
R109
0
+
C11
C107
0
R12
150(1/4W)
C108
N.M.
N.M.
C115
1000p
C106
0.1u/16V(k)
+
C12
C141
2200p
R110
39k
R127
11k
+
C10
N.M.
C136
2200p
L2
C127
2200p
R119
8.2k
L9
C102
+
C16
22u/16V
C126
0.1u/16V(k)
+
C17
4.7u/25V
R131
13k
D3
1N4148
R105
C116
1u
R19
E
Q104 RT1N436C
BC
C142
R134
1k
C114
220p
C109
820p
Q103
RT1P141C
B
CE
IC101A
LM2902
Ð
2
+
3
O
1
C112
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
IC101B
LM2902
Ð
6
+
5
O
7
C110
33p
C132
C131
IC101C
LM2902
Ð
9
+
10
O
8
R115
0
R125
82k
IC101D
LM2902
Ð
13
+
12
O
14
R108
620
+
C2
N.M.
JP2
JP
C140
N.M.
LIU PWB Circuit
2/3