Denon DCD-3520 - Detailed Adjustment Procedures (Cont.); Super Linear Converter Adjustment

11. Super Linear Converter
@ Required Measuring Equipments
(1) Distortion Meter: To be able to measure up to 0.001%.
(2) Amplifier: Gain 60 dB, distortion — Jess than 0.1% (electronic VTVM, etc.).
(3) DENON TECHNICAL DISC: 100 Hz /0 dB, 1 kHz / -60 dB.
(4) Oscilloscope
Note: Because the unit is precisely adjusted by the factory, do not attempt to adjust the unit easily if the above equip-
ment are not on hand.
Connection Diagram
Oscilloscope
(Fig. 1)
Distortion
CD Player O Meter
FIX
OUTPUT
Oscilloscope
Distortion
Distorted Component
Monitor Output
Distortion Meter jAdjustment Point Confirming Matter Adjustment Procedure
SLC Volume | Oscilloscope . Connect as per Connection Diagram (Fig. 1).
. Playback DENON TECHNICAL DISC 100 Hz/0dB
(L ch) 100Hz OdB
oN tone.
\
LPF “ON VR501 OEE . Adjust the SLC volume controls (1), ), 3), 4)
consecutively and obtain minimum distorted
Observe the dislorted waveform on the scope.
component of this
portion . Re-adjust step 3.
Oscilloscope (ch2) . Connect as per Connection Diagram (Fig. 2).
. Playback the Test Disc 1 kHz / -60 cB tone.
wo Sw . Adjust the SLC volume control @) for minimum
SLC Volume distorted waveform on the scope.
e Adjust the VRs . Apply the above adjustments for both channels.
consecutively to
obtain the peak
portions of
distorted com-
ponent become
smooth.
Trigger CH1