+-
JK300
1
2
3
4
5
JK301
1
2
3
4
5
L301
L302
D300
1
2
3
4
T300
1
2
4
56
7
10
9
8
DG
R301 270
R302 22
R303 22
D301
1
2
3
VDD33
VDD33
DG
VDD33VDD33
DG
R309
1.2kR310
120
R311 1.8k
DG
DG
Q303
Q304
1
E1
2
B1
3
C2
4
E2
5
B2
6
C1
C303
1000p 50
C302
1000p
50
VCC33
VDD33
VCCA33
C301
NC
L
H
TR
H-D
L-D
C305
1u 10
C304
1u 10
R306
8.2k
R307
5.6k
R308 12k
C306
0.1u
10
C310
0.1u
10
C311
0.1u
10
Q301
1
E1
2
B1
3
C2
4
E2
5
B2
6
C1
R319 8.2k
R320 5.6k
R305 1.8k
R304 1.8k
C312
1000p
C313
1000p
C307
1000p
C308
1000p
C325
1u 10
R322
5.6
DG
DG
R542
NC
R541
10k
R545
NC
DG
C555
NC
C557
0.1u
16
C558
150u
25
R546
NC
R540
NC
C556
0.1u
50
3.3V
R547
27k
R548
3.9k
L222 0
L220 0
L221 0
D315
C551
0.1u
50
3.3V
DG
R321 27
R560 0
PG
PG
C309
1u50
PG
PG
PG
C332
1u
50
C331
1u
50
R342 560
R343 330
VDD33
DG
DG
DG
C330
0.1u
10
R340 100
R341 100
R312 1.2k
R313 1.2k
Q332
1
E1
2
B1
3
C2
4
E2
5
B2
6
C1
DG
C33
7
1u
50
R348 330
R349
560
DG
VDD33
DG
C333
0.1u
10
DG
C334
NC
VDD33 VDD33
C335
0.1u
10
DG
C336
0.1u
10
DG DG
R350 4.7k
R351 4.7k
R352 15k
R353
5.6k
R354
6.8k
R355
10k
DG
R537
620k
R556
750k
C552
0.015u
16
C533
8200p
R539
18k
R538
10k
C554
100p
IC510
1
BOOT
2
VIN
3
EN
4
SS/TR
5
RT/CLK
6
PWRGD
7
VSENSE
8
COMP
9
GND1
10
PH
11
GND2
L309 220u
D532
D533
L303
L304
Q331
1
B1
2
E
3
B2
5
C1
4
C2
Q330
R554
7.5k
R552
100k
C550
220u
50
R345470
R346
4.7
R347
4.7
1608 50V 1u
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
KX-DT543/KX-DT546 MAIN BOARD NO.1 (2/2)
(11) DPT - PBX signal (Receiving signals)
(12) DPT - PBX signal (Transmitting signals)
(12) DPT - PBX signal (Transmitting signals)
(12) DPT - PBX signal (Transmitting signals)
(16) DXDP signal (Receiving signals)
(17) DXDP signal (Transmitting signals)
(17) DXDP signal (Transmitting signals)
(17) DXDP signal (Transmitting signals)
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