Service manual

FO-IS125N
6 – 13
13. Handset Codec Block (12/12)
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
DG
+3.3V +3.3V
+3.3V
+3.3V
DG
DG
DG
DG
ADG
+3.3V
VREF
ADG
ADG
ADG ADG
ADG
ADG
ADG
+24VA
ADG
DG
ADG
ADG
+3.3V
VREF
ADG
ADG
ADG
+3.3V
ADG
VREF
ADG
ADG
ADG
ADG
+3.3V
+24VA
ADG
+24VH
ADG
+24VA
DG
+3.3V
ADG
ADG
SDIB_P SDIB_N
(10-4E) (10-4E)
SVC (12-3B)
SVC
TELIN
TELOUT nRHS(1-6D)
(12-4H) (12-5I)
TELOUT (12-2F)
TELMUTE (10-2D)
TELIN (12-1F)
TELINMUTE(10-2D)
C1224 10u (2012)
R1224
1K
TP1206
R1214
3.01K-F(1608)
C1207
0.1u
R1208 3.3K
C1222 0.1u
C1215
N.M.
R1200
2.2K
C1200 10u (2012)
C1217
N.M.
C1206
N.M.
R1207
39K
R1233
1K
R1211 82K
C1209 2200pF
TP1201
C1203
2.2u (1608)
C1227 0.1u
TP1205
R1217 13K
R1210
0
C1218
N.M.
R1225
4.7K
R1218 N.M.
C1210
0.1u
C1220
2200pF (1608)
R1205
10K
C1226 N.M. (1608)
C1213
0.1u
C1230
0.1u
2 3
1
+ -
IC1201A
HA17358AFEL
C1223
0.1u
TEST
12
DIBN
16
PWR
15
AVDD
2
DIBP
14
DVDD
1
VC
3
EP
17
EIF
9
EIO
10
RXI
6
EIC
11
TAC
5
RAC
4
TXO
8
TXF
7
GPIO
13
IC1200
CX20548-12Z
6 5
7
+ -
IC1201B
HA17358AFEL
R1215
39K
C1221
10u (2012)
TP1200
C1219
2.2u (1608)
R1219
0
R1234
N.M. (3216)
C1212
N.M.
Q1200 KTC3198GR-AT
R1235 N.M. (3216)
C1225 0.1u
R1227 0 (1608)
R1209
N.M.
C1216
1u-K (1608)
C1202
N.M.
R1206
3.01K-F(1608)
6
1
4
3
C
1 0
IC1202A
TC7PA53FU
R1202
510
B
E
C
Q1201
RN1406
R1229 10K
TP1203
R1226 0 (1608)
VDD
5
GND
2
IC1202B
TC7PA53FU
R1231
0 (3216)
R1204
150K-F (1608)
C1204
N.M.
C1208
N.M.
R1201 470K
R1212 1K
AK
D1200
1SS352
VDD
8
VSS
4
IC1201C
HA17358AFEL
R1213
3.3K
C1205
0.01u (1608)
C1233
0.1u
1 2 3 4 5
CNTEL
A2001WV2-5P
C1211 390p
R1237
0
C1228 N.M. (1608)
TP1204
C1201 22p
R1203
10K
+
C1231
10u/50V
R1232 100 (3216)
TP1202
C1214
1u/50V (2012)
R1220
150 (3225)
R1221
0 (1608)
Handset Codec Block
12/12
HANDSET CODEC