Denon DCD-660 - Tracking Offset and Focus Gain

20
4. Tracking offset
Connection
Oscilloscope
Main Unit
Terminal Pin: ToS +
Terminal Pin: GND[jO-——_—_—__—___—_0 --
Oscilloscope Adjust Check : Step
(DC range)
(Volume) (Oscilloscope)
0.1V/div 1~2 VR101 A
ms/div
A=B
5. Focus gain
1. Push [4 OPEN/CLOSEland load disc holder reference disk.
2. Push [4 OPEN/CLOSEland close disc holder.
3. Push| ® PLAY} to turn disc. (Displays track number f- )
4. Short (+) (-) of oscilloscope and check the base line.
5. Adjust VR101 [T-OFFSET] to equalize upper and lower
amplitude of the waveform.
Connection
Oscilloscope
Main
Unit
.
Counter
Terminal Pin: FOfS
Termianl Pin: FI [G;
Termianl Pin: FEI
Terminal Pin: GND
V (Volume) (Oscilloscope)
Pv
[|
towne
1.
Push
|
11
PAUSE|(Displays
track
number
GJ
)
2. Set oscillator to 750 Hz/1 Vp-p.
3. Switch oscilloscope input to X-Y mode.
e@
X-Y
mode
4.
Adjust
VR102
[F-GAIN]
to
symmetrize
Lissajous
figures
to
X and
Y
axes.
e DC range
Phase 90°
Waveform not right
X axis