KX-HDV230RU, KX-HDV230RUB - Panasonic PBX Service Manual Supplement (repair manual). Page 9

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9
KX-HDV230 Series 
4.2.3.
Reset Circuit
Reset Signal is output from IC401 and input into IC101-pin V12.
PDN is DC power down detect.
Detect  the AC and PoE power down signal. 
PDN
003:6D
R425
3.3V
C446
IC401
4
OUT
3
CD
1
VSS
2
VDD
C445
DG
DG
PWR_RST
C459
R426
DG
V12
RSTN
IC101
C329
PDN
R333
DG
DG
R334
F301
32
3
D301
DG
D302
C322
C318
DCIN
PoE_DC
D304
12V
12V
DC_JKP
DC_JKM
L306
1
4
3
2
from PoE 
from AC Adaptor 
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