Denon DCD-660 - Servo System Adjustments; Tracking Gain and Offset Check

7. Tracking gain
Connection
Oscilloscope
Main Unit
Counter
Terminal Pin: TO
Terminal pIn: TI[S
Terminal Pin: TE!
Terminal Pin: GND
* Caution: Connect oscillator after | 1! PAUSE] pushed and servo function started.
(Volume) (Oscilloscope) . Push |tt PAUSE]. (Displays track number 94)
. Connect oscillator.
(4120 Hz) | 2.2 kHz . Set oscillator to 2.2 kHz/3 Vp-p.
@3 Vp-p (+120 Hz) @ DC range . Switch oscilloscope input to X-Y mode.
(+0.1V) @ X-Y mode _ Adjust VR104 [T-GAIN] to symmetrize Lissajous
figures to X-Y axes.
@ 2.2 kHz
Phase 90°
Waveform not right
X axis
8. Tracking offset adjustment check
(1) Adjust tracking offset again.
(2) Push [m STOP and stop disc.
(3) Push and check disc turns.
Note:
if
disc
does
not
turn,
push
again
and
check
track
number
Uc’
is
displayed.
(4) Check oscilloscope waveform upper and lower amplitude are same to base line.
(5) Push and stop disc. a
(6)
Push
and
remove
the
reference
disc.
rads