Block Diagram - Yamaha PX-2 Owner's Manual

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BLOCK DIAGRAM
TONEARM CONTROL CIRCUIT
Angle
Sensor
Tanearm | Tonearm
Feeder (Tracking, Right, Left A Stop)
: a
Reference T
O
Voltage
Serva Bat
Reference "LON
Voltage li ef Left Arm Right
Limit Position Limit
EN Clock
Regulation
= Gain
e
; x
mayi
Contro
=) PAO eo
HOLD
Voltage
Band-Pass l :
Pre
Arm-Up
Detector
Tonearm
(UP & DOWN)
YOD CR R L LL P3 P2 PI AL M
YAMAHAH YM-294
LR LIF L25L30M. MR MD AI AZ AS UL Vss
rt
PLL
DD Motor I
Pe) HO Ae) HH OE
' DC MOTOR SERVO CIRCUIT
Lock Indicator .
Disturbance
For Positive-torgue Genaration
IC2 VC4046
5,5296MH2
Crystal Frequency
E L oschlator
| Platter |
2560. 3456
Freguency FV S
45: 67.5Hz
Divider i
33. 50Hz
Frequenc
Wave Shaper vider'
Rega von Rotation
Detector
Frequency
ki Generator i
29/33 Start/Stop