Read Panasonic KX-TDA6381X / KX-TDA6381SX Service Manual online
16
KX-TDA6381X/KX-TDA6381SX
4.2.2.11. Power Failure Port
At the time of the power failure, for enabling a direct call to the extension phone, 4 lines out of 16 lines can be connected to the
SLT port, which provides a switching relay for power failure on the extension card, by a cable. Connecting CN3, CN4 with the
connectors for power failure on the extension card can call at the power failure.
SLT port, which provides a switching relay for power failure on the extension card, by a cable. Connecting CN3, CN4 with the
connectors for power failure on the extension card can call at the power failure.
4.2.2.12. Noise Rejection
It rejects the extrinsic noise that comes from the outside line with the coils L1A~H that are mounted on the Main Board between
T- R and the capasitors C1A~H that are mounted between T-R.
T- R and the capasitors C1A~H that are mounted between T-R.
It rejects the extrinsic noise that comes from the outside line with the filters L1I - P, L2I - P,L3I - P,L4I - P that are mounted on the
Sub Board between T - R and the capasitors C13I - P that are mounted between T - R.
Sub Board between T - R and the capasitors C13I - P that are mounted between T - R.
R[0]
T[0]
AG
+5V
DG
DG
DG
DG
DG
+5V
+5V
+5V
+5V
+5V
SFG
R
20A
PC5A
1
2
3
4
R
17A
D2A
R3
A
T1A
2
1
3
4
C1
A
C2
A
C4
A
C8A
D1A
D4
A
2V
R21A
R
11A
R
14A
R15A
R16A
R
18A
R
19A
R1
A
R22A
R2
A
R4A
R5
A
R6
A
J1A
RL
2
A
4
3
2
1
J4A
PC1A
1
23
4
PC2A
1
2
3
4
PC
4
A
1
2
3
4
L1A
1
2
3
4
C3
A
CN3 2
CN3 3
J7
A
C6
A
C7A
Q5A
E
C
B
ZN
R
2
A
CN2
1
26
D3A
1
2
3
4
TH1A
ZN
R
1
A
RL3A
4
3
2
1
D5
A
SA
1
A
12
3
Q4A
E
C
B
A
R[0]
T[0]
AG
+5V
DG
DG
DG
DG
DG
+5V
+5V
+5V
+5V
+5V
SFG
R
20A
PC5A
1
2
3
4
R
17A
D2A
R3
A
T1A
2
1
3
4
C1
A
C2
A
C4
A
C8A
D1A
D4
A
2V
R21A
R
11A
R1
4
A
R15A
R16A
R
18A
R
19A
R1
A
R22A
R2
A
R4A
R5
A
R6
A
J1A
RL
2
A
4
3
2
1
J4A
PC1A
1
23
4
PC2A
1
2
3
4
PC
4
A
1
2
3
4
L1A
1
2
3
4
C3
A
CN3 2
CN3 3
J7
A
C6
A
C7A
Q5A
E
C
B
ZN
R
2
A
CN2
1
26
D3A
1
2
3
4
TH1A
ZN
R
1
A
RL3A
4
3
2
1
D5
A
SA
1
A
12
3
Q4A
E
C
B
A
R[8]
T[8]
DG
DG
+5V
SFG
T[8]
R[8]
DG
+5V
DG
+5V
DG
AG
+5V
+5V
+5V
RING[8]
TIP[8]
PC5I
1
2
3
4
J1I
R3I
C1
I
C2
I
C4I
D2I
R
11I
R
14I
R1
5
I
R16I
R1
7
I
R
18I
R
19I
R1
I
D1I
D4
I
R
20I
R22I
R2
I
R4I
R5
I
R6I
J7
I
RL2I
4
3
2
1
ZN
R
1
I
C8I
R21I
L1I
L2I
J4I
PC1I
1
23
4
PC2I
1
2
3
4
PC
4
I
1
2
3
4
C3
I
C7
I
RL3I
4
3
2
1
T1I
2
1
3
4
C6
I
TH1I
ZN
R
2
I
Q5I
E
C
B
D3I
1
2
3
4
D5
I
SA
1
I
12
3
Q4I
E
C
B
L4I
L3I
C
13I
I
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