Panasonic KX-DT543-B Service Manual page 45

(12) DPT - PBX signal (Transmitting signals)
R305
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
PG
C308
1000p
1.8k
1 6
VDD33
E1
C1
D301
2 B1 5
B2
1
2
3 C2 4
E2
Q301
DG
C307
1000p
R304 1.8k
VDD33 VDD33
(12) DPT - PBX signal (Transmitting signals)
DG
R311 1.8k
DG DG
R340 100
R341 100
C313
1000p (17) DXDP signal (Transmitting signals)
R312 1.2k
1
DG
2 B1
C312
1000p
3 C2
R313 1.2k
(17) DXDP signal (Transmitting signals)
VDD33 VDD33
DG
R350 4.7k
DG DG DG
R560 0
C556
0.1u
50
IC510
11
1 BOOT 10
PH
2 VIN 9
GND1
GND2
3 EN 8
COMP
4 SS/TR 7
VSENSE
5 RT/CLK 6
PWRGD
DG
1000p 50
C305 C303
1u 10
1608 50V 1u
T300
R302 22
1 10
2 9
VDD33
8
3
DG
4 7
R303 22
5 6
C304 C302
1u 10 1000p
50
VDD33
Q330
50
1u
Q331
DG
C331
3 B2 C2
4
2 E
1 B1 C1
5
DG
DG
6
E1 C1
5 VDD33
B2
4
E2
50
C333
1u
Q332 0.1u
C337
10 DG
NC
C334
DG
DG
R319 8.2k
R320 5.6k
PG
R321 27
PG
3.3V
3.3V
L309 220u L221
L220
L222
DG
KX-DT543/KX-DT546 MAIN BOARD NO.1 (2/2)
45
KX-DT543/KX-DT543-B/KX-DT546/KX-DT546-B
(11) DPT - PBX signal (Receiving signals)
(12) DPT - PBX signal (Transmitting signals)
L
JK300
D300 L301
2
4
3
4 1
5
2
L302
- +
1
DG
3
NC
C301 H
R T
PG
(16) DXDP signal (Receiving signals)
(17) DXDP signal (Transmitting signals)
L-D
JK301
L303
4
3
5
L304
2
1
DG
H-D
Q303
PG
VDD33
0
VCCA33
0
VCC33
0