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RX-504VBK/RX-504VLBK
RX-505VTN/RX-505VLTN
GND
RECT. FILTER
OUTPUT
AMP
OUT
OUTPUT
AMP
GAIN
SUMMING
AMP OUT
RECT. FILTER
CONTROL GAIN
BUFFER OUT
voo&
BUFFER IN
NOISE RED. ING
INPUT AMP OUT
NR AMP DECOUPLE
INPUT AMP GAIN
HE 1TA7317P (IC901) : Protector
Muting IN
Vec
'
I
Over Current
Schmitt
Detector
!
DC Detect pe
a
ee
ee
de ee
IN
Discharge IN
Substrate
M MN1281(P.Q) (1C491): Reset IC
Reference
Voltage
(1)
Power supply
Bi comparator
Level
o
Conversion
utput
Circuit
A
Circuit
B 'comparator
Reset signal output : Low level is output when
resetting
: High level is output
when cancelling the
reset.
Reference
Voltage
(2)
5
1-30 (No.20220)
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