Denon DCD-3520 - Mechanism Unit Adjustments; Turntable and Spindle Motor Adjustment

| MECHANISM UNIT ADJUSTMENT |
@ Turntable Height Adjustment
(1) Mount the spindle motor ass’y to the housing with 2
screws. (Refer to the illustration of ‘Laser Pick-up 2m/m \ Turtable
KSS-151A Removal’) See Shaft
(2) Set the Turntable to the shaft and insert the 2 mm (Jig)
spacer (jig) between the Turntable and the housing
as illustration shows.
(3) While lightly pressing the Turntable from the top
side, tighten screw G) with a hex. wrench,
«———— Housing
@ Spindle Motor Adjustment
(1) Disassemble Mechanism Unit in the first place, then detach the Spindle Motor Ass’‘y.
(2) Connect the adjustment wire connector (6P) to the measuring equipments as per illustration shows.
Spindle Motor Ass‘y
Oscilloscope
Constant Voltage
Power Supply
' Input Voltage Adjustment
Adjustment Wire Connector Volume Control
(3) Adjust the balance volume control VR1 and obtain
even amplitude for vertical (A) and horizontal (B).
(Rotating the VR causes shifting (B) amplitude.) CHI
(4) In case using a dual mode oscilloscope to execute Hbwineven
adjustment, set it to ALTER or CHOPPER mode amplitude
and apply a signal to CH1 and CH2. Then adjust
the balance volume control VR1 and obtain even
amplitude for both waveforms as illustration shows.
Note: Be noted that a greater input signal causing the saturation of waveform.
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