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DZ1200 audio output circuit block diagram
Fig 5
MAIN
IC18
+7 V power supply
Three-terminal
regulator
IC14
Scratch microcomputer
DSC25
LRCK
DATA
BCK
SCK
Digital output enable signal
X6
11.2896MHz
DZ1200 turntable control circuit block diagram
Fig 6
MAIN
Clock
IC2
UI microcomputer
Serial
M30622
communication
Torque switching
IC14
Scratch microcomputer
DSC25
+5 V for audio
IC33
DAC
IC35
PCM1734
Operation
Analog
amplifier
Analog
audio
M5218A
Serial communication
IC2
UI microcomputer
M30622
IC4
DIGITAL
AUDIO
TC9271
IC15
Gate
7W08F
JACK
TT.PWM
IC2003
Motor controller
X2001
AN6680
4.193MHz
Brake
adjustment
VR2001
IC2007
IC2008
Analog SW
Motor ON/OFF
Turntable FREE
Forward/reverse switching signal
Refer to the item "Signal flow", CD, SD audio flow.
JACK
IC2004
Operation
amplifier
audio
M5218A
IC2002
VR2002
Operation
H.PHONE
amplifier
VR
M5218A
MUTE signal
MUTE
circuit
Digital
IC2006
audio
7WU04F
Buffer
+20V
+10V
Q2008
+20 V power supply
Transistor
IC2005
Motor driver
AN6675
ECR
EC
Q2009
FG
AMP
Analog
audio
LINE
OUT
Q2004
Q2005
H.PHONE
Q2006
audio
H.PHONE
Q2007
OUT
T2001
Digital
Isolation
audio
DIGITAL
transformer
OUT
Refer to the item "Signal flow", turntable.
Turntable
Motor
Three-phase signal
FG signal
FD coil
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