IF 増幅 MPX レシオ検波 Hiroshi Kitaguchi Date: Rev: 18-Oct

A
B
C
E
+12V
F
+12V
IN
GND
OUT
IF 増幅
IN
OUT
1
レシオ検波
MPX
PC
Rout
Lout
GND
STEREO
IF
AFC
1
2
3
4
5
6
7
8
+12V
VCC
IN
FRONT-END
1
D
S
X
E
R804
33k
E
R803
10k
R802
10k
R801
10k
2
3
C802
0.47u/50V
Q803
TA7504
C805
22u/25V
R806
33k
D801
R821
VR2k
Q802
C1740
D802
R214
33k
C804
10u/16V
C212
2.2u/50V
Q108
C1815
R812
2.7k
R222
330
19kHz
C219
2.2u/50V
2
R220
33k
T-METER
3
R822
390
C806
0.01
C807
0.01
R814
5.6k
R810
33k
R811
33k
4
R221
270k
+12V
R813
2.2k
同調ノブに手を触れている時: 0V
同調ノブから手を放している時: 1.7~2.8V
R215
4.7k
R809
10k
-12V
-12V
3
C803
6 3300P
+12V
16
15
14
13
12
11
10
9
R805
4.7M
C801
0.47u/50V
7
19KI
NCAFC-???
19KO
T
IF
1
+B
E
+12V
4
F
2
+12V
QUARTZ LOCK UNIT
5
Tuning Knob
VCO
HA11223
Q806
C1583
4
R816
4.7k
-12V
A
B
C
D
E
Date:
ONKYO T-408
QuartzLock
Rev:
18-Oct-2015
Hiroshi Kitaguchi
F