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KX-TDA6178X, KX-TDA6178XJ (serv.man8) - Panasonic PBX Service Manual Supplement (repair manual). Page 4

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4
KX-TDA6178X/KX-TDA6178XJ
2.2.
Power Supply
Change from the Original Service Manual Section 5.2.6.
NM
KXTDA6178X
KXTDA6178XJ
TA
RA
C313A
CN201
2
DIAG_T
RL201A
6
7
5
CN201
3
DIAG_R
RL201A
3
2
4
C313B
DG
C302A
C303A
C302B
C303B
VBATa
J300A
DG
DG
R310A
R308A
R309A
R308B
R309B
D
305A
C
304A
DG
D
304A
FG
C
305A
C
321A
C3
1
0
A
R315A
R316A
C3
0
9
A
L300A
DG
DG
R314A
D
301A
1
2
C308A
L301A
+40V
DG
Q300A
S
1 2 3
G
4
D
5 6 7 8
Q301A
S
D
G
CN200
26
1
C307A
IC300A
TIPa
1
SRINGDCa
5
SRINGACa
6
STIPACa
7
STIPDCa
8
SVBATa
11
SDCHa
20
SDCLa
21
DCDRVa
22
DCFFa
23
DCFFb
24
STIPDCb
38
STIPACb
39
SRINGACb
40
SRINGDCb
41
RINGa
59
R319A
R318A
R313A
R306A
R306B
R307A
R307B
RL200A
9
10
8
RL200A
4
3
5
R317A
R260A
R261A
m
b
m
b
b
m
m
b
SDCL
SDCH
DCDRV
TIP
(Port1-8)
0
-45V
RING
(Port9-24)
-26V
Voltage and current generated by the SLIC is supplied to the phones.
Preset voltage is -45V(port1-8), -26V (port9-24) (On-hook).
Current is set as 26mA (Off-hook).
5.2.6.     Power Supply
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