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GD-1220/1221 © 2006 - 2008 TOSHIBA TEC CORPORATION All rights reserved
ELECTRICAL CIRCUITS
4 - 12
4.2.6 Line monitor circuit
NA/TW models
Fig. 4-12
CN10
Lb
La
Line
NCU board
SPVOL0
4
3
3
5
3
SPVOL1
SPVOL2
15
3
TONESEL 59
57
24
58
1
1
2
3
6
112
267
3
1
13
7
5
6
2
4
15
14
9,11 10
3
6
2
11
10
9
TXOUT1
RXIN1
9,10
RING/TONE 2311
CML1 27
ATT3DB1 62
SP+
SP-
Speaker
IC10
Analog
switch
IC10
IC9
Analog
switch
AG
SG
T1
IC53
IC52
AG
CN9
CN252
0
1
0
8
121
4
9
0
1
0
1
0
1
IC51
Analog
switch
RLY2
CML relay
FAX board
AG
Q51
+12V
R273
[
R31
]
R272
[
R30
]
R59
R71R67
R271
[
R29
]
R270
[
R32
]
R268
[
R35
]
R267
[
R33
]
R266
[
R36
]
[
R37
]
IC53
25RING
[
SPKCLK
]
12
[
2
]
32
[
29
]
28,29
[
25,26
]
IC2
MODEM
CN264
R66
R68
IC23
ASIC
IC23
ASIC
IC53
SoC
CN5
MAIN board
CN5
59
57
24
58
25
23
27
62
152
150
149
151
A5
153
144
142
13
[
4
]
14
[
2
]
15
[
5
]
12
[
1
]
1
[
12
]
5
[
15
]
2
[
14
]
4
[
13
]
08/08