Technics SU-V300M2

X1
Rch
AN6558F
IC451
PHONO EQ AMP
NJU7312AL
IC401
INPUT SELECTOR
M5218AP
IC402
BUFFER AMP
UPC4570C
IC471
TONE AMP
M37470M2536S
IC801
MICRO COMPUTER
Rch
-B
+B
-B +B1
-B +B1
-B +B1
+B2
RIAA
PHONO
TUNER
CD
2
(6)
1
(7)
3
(5)
4
8
2
(27)
3
(26)
4
(25)
X2
X3
5
(24)
28114
2
(6)
3
(5)
48
VR501-1
(VOLUME)
VR502
(BALANCE)
1
(7)
3
(5)
2
(6)
1
(7)
48
S401
(TONE)
defeat
on
Q505
(Q506)
Q815
20
P31/INT
Q803
13 17
VREF
Vcc
8
(21)
23
24
25
13
15
16
P40
P41
P00
AUX
TAPE2
PLAY(IN)
TAPE1
REC(OUT)
TAPE2
REC(OUT)
TAPE1
PLAY(IN)
6
(23)
7
(22)
9
(20)
10
(19)
11
(18)
X4
X5
X6
X7
X8
MODE
SELECTOR
D818,819
Q813,814
28
29
14
15
XOUT
XIN
P03
P04
S801~806,
808,809
Q804~809 D809~814
LED
DRIVE
18
11
12
32
3
4
5
6
7
RESET
P21/IN1
P20/IN0
P07
P15/S OUT
P14/S IN
P13/T1
P12/T0
P11
P10
8
HEADPHONES
27 26
P02 P01
treble
bass
NF
MUT-
ING
BIAS
SHORT
DET.
POWER
ON/OFF
Drive Power
10
(14)
11(13)
4
(1)
Q601
RL601 A
SPEAKERS
B
Q602
RL602
6
2
RSN3502C
IC601
POWER AMP
[ L ch ]
12
(17)
+B2
Vss
16
D807D806 D803
+B3
D821
+B2
X801
(4MHz)
P17/SRDY
1
POWER
TRANSFORMER
+B2
+B3
+B1
-B
D705
D701~704
Q751
RL751
D751,752
T1
D707,708
D710
D712
D706
8
3
9,12 7
Q812,816
+B2
D817
(OPERATION)
Q603~606
+B2
Q702
MUTING
CONT.
RESET
21
P32/CNTR0
S807
(POWER)
LED
DRIVE
Q507
(Q508)
(MUTING)
(MUTING)
RELAY
DRIVE
RELAY
DRIVE
PROTECT/
OVER LOAD
REGULATOR
RELAY
DRIVE
SWITCHING
(STANDBY)
Q818
SWITCHING
(STANDBY)
D826
D825
Q817
+B2
LED
DRIVE
D802D801
AC IN
F1
L1
LED
DRIVE
Q810
D816
(STANDBY)
D820
P30/INT0 +B3
19
D804
D808
D824
D823
D754
D756
D604
D608
D607D606
NOTES : PHONO SIGNAL LINE
: REC OUT SIGNAL LINE
( ) indicates pin No. Right channel.