BLOCK DIAGRAM
SPEAKER
OUT
SPK
+
-
REC OUT BUFFER
DETECT
LINE DETECT
AMP
CLASS D
OUTPUT STAGE
NC500
CD
LINE1
LINE2
REC1
REC2
PHONO EQ AMP
NJU72322
BASS : 50Hz ±6dB
TREBLE : 20kHz ±6dB
+
-
+
-
UNBAL-BAL AMP
with DC servo
+30dB
+
-
+12.4dB
HP AMP
HEADPHONE
OUT
REC1
OUT
2018/3/8
T. Murayama
Rch
Rch INPUT SELECTOR
TOTAL GAIN
42dB
POWER
AMP
IN
REC2
OUT
OP amp
(NJM8080)
OP amp
(NJM8080)
PHONO
MC
HEADAMP
+40.0dB
+20.0dB
OP amp
(NJM8068)
TONE BUFFER
0dB
OP amp + Tr Buffer
(NJM2082)
+30.6dB
0dB
PM-12 BLOCKDIAGRAM
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
26
