Technics SL-QX300

m@ BLOCK DIAGRAM
IC30]
AN6682
Pitch control
22
mM
0.238psec
(4,193MHz)
524.1kHz
Reference
!
frequenco
VRS
VR302
Pitch
control
Stabilizer
I5V
Reset
1C302
MN4011B
Pitch control
on/off select
5V
9
aD 21 pl! 490kHz~ 55g 2kH2
8
13 (1C302)
5
ro 4
C4 ah
3 6
$30!
Close:Pitch O% 524.1kHz
a
33rpm, 2Omsec
45rpm, |4msec
F.G coil
1c201
AN6683
Reference signal generation,
F.G_amplifier, speed and phase
control
Stabilizer
Arm switch
Storobe
drive
+o
S201
I5V
$201, 202:
Speed selector Switch
Strobe
D204 D203
MP’
SS I5V
—Start/stop
Ell
Bl S|
ot IL
Power AC
Cl Line
Regulator
I5V
33rpm,!Omsec
IC1Ol
AN6637
Turntable drive
HIO1 f | HIO2 Between A3ZandA4
prevention
circuit
Hall element
signal process
ing circuit
Between Al and A2