Panasonic KX-TA1232 Service Manual page 219

TO CN204
CN206
COMPARATOR
A
FG 1
2 R201A
3
2.2K
4
FG
R239A
7
2.2K
-15V 33
-15V
C202A
50V2.2
+15B 8
+15B
+15V 10 +15V
R200A 39
DG
11
12
C216A
50V2.2
HA 25
R238A
LA
26
39
Q203A
RLYA 27
BGA
28
TA 29
R207A
RA
30
6.8K
R210A
6.8K
C220A
0.039 µF
R275A R224A
56K 15K
R225A
33K
RING TRIP DETECT
B
R201B
2.2K
R239B
2.2K
C202B
50V2.2
R200B 39
CN206
C216B
50V2.2
HB 19
LB 20
R238B 39
Q203B
RLYB
21
BGB 22
TB
23
R207B
RB 24
6.8K
R210B
6.8K
C220B
0.039 µF
R275B R224B
56K 15K
R225B
33K
CN206
HC
C
13
LC
14
RLYC
15
BGC
16
TC
17
RC
18
CN205
HD
6 D
LD
5
RLYD
4
BGD
3
TD
2
RD
1
BREAK
CONTROL1 +15V
Q215
R285
1.2K
0
2
5
0
0
-2
IC203A
4
0.7
R276A
12
5
47
IC203A
9
R277A
7
VREF
47
10
Q201A
R234A 2.2K
+5V R235A 560
C217A 68P
R237A 560 C218A 68P
R236A 2.2K
Q208A
J250A
R205A R206A
0
+15V
22
68
J251A
Q300A
C204A 10 µ
R209A
Q204A R208A 22
-15V
68
Q301A
R212A
C222A 10µ
2.4K
R219A
110K
C205A
10 µ
R220A 110K
C206A
J256A 0 R222A
10 µ
300
J257A
-15V
R226A
Q205A
10K
R228A
D211A
12K
Q206A
-15V
-15V
HOOK DETECT
IC203B
4
R276B
12
5
47
IC203B
9
R277B
7
VREF
47
10
Q201B
R234B 2.2K
+5DT R235B 560 C217B 68P
C218B 68P
R237B 560
R236B 2.2K
Q208B
J250B
R205B R206B
0
+15V
22 68
J251B
Q300B
C204B 10 µ
Q204B R208B 22 R209B
-15V
68
Q301B
R212B
C222B 10 µ
2.4K
R219B
C205B 110K
10 µ
R220B 110K
C206B
J256B 0 R222B
10 µ
300
J257B
-15V R226B
Q205B
10K
R228B
D211B
12K
Q206B
-15V
-15V
SAME AS B
SAME AS B
+5V +5V
OL[1]
5 D220 5
OL[2]
Q214
R242
5
6.8K
Q213
OVERLOAD OVERLOAD
DETECT1 DETECT2
DR1A
+5V
11
DR1B
3
IC203A
8
6
-5V
DT1A
5
0
DT1B
CODEC
R330A
IC201A
R215A C208A
110K 0
R214A 0
1
RO+ DR
0
82K 3
PI DT
C299A
PDI
220P 0 FSR
4
R213A
PO- FST
0
3K 5
PO+ MCLK
C901A 56P
BCLKR
J260A
BCLKT
R901A
J252A
17
0
TG
R900A 91K
VDD
J253A
18
TI-
19
TI+
C900A
56P
20
VAG VSS
R221A
MU/A
16
91K
R902A
D212A
R229A
33K
D213A
R230A
+5V
10K
DR2A
+5V
DR2B 11
3
IC203B
8
6
-5V
DT2A
DT2B
R330B
IC201B
R215B C208B
R214B 110K 0
1
RO+ DR
82K 3
PI DT
C299B
PDI
FSR
220P
4
R213B
PO- FST
3K
5
PO+ MCLK
C901B 56P
BCLKR
J260B
BCLKT
R901B
J252B
0 17
TG
R900B 91K
VDD
J253B 18
TI-
19
TI+
C900B
56P
20
VAG VSS
R221B
MU/A
16
91K
R902B
D212B
R229B
33K
D213B
R230B
+5V
10K
CN206
34
+5V
5
-15
0
Q210
TO CN204
R246
Q211
1.5K
R241
47K
BREAK
-15V
CONTROL2
DT1A,DT1B,DR1A,DR1B
4
0
HWSB
8
HWRB
13
PD[1]
10
SYC[1]
7
14
C2M
11
9
12
5
0
+5V
6
15
5
MU/A
0
LCT[1]
5
HOOK[1]
0
BELL[1]
DT2A,DT2B,DR2A,DR2B
HWSB
8
HWRB
13
PD[2]
10
SYC[2]
7
14
C2M
11
9
12
+5V
6
15
MU/A
LCT[2]
HOOK[2]
BELL[2]
DT3A,DT3B,DR3A,DR3B
HWSB
HWRB
PD[3]
C2M
SYC[3]
MU/A
LCT[3]
HOOK[3]
BELL[3]
DT4A,DT4B,DR4A,DR4B
HWSB
HWRB
PD[4]
C2M
SYC[4]
MU/A
LCT[4]
HOOK[4]
BELL[4]
CN205 CN206
BR[1]
34 6
BR[2]
TO CN204
33
TO CN204
4
0
4
0