Denon DP-S1 Service Manual

fmm OP-S1
8. Tracking gain
Connection
Oscilloscope
3U-2415-1
P.W.B.
:
Counter
TP101- @ (FEO) O
TP101 - © (TENO
TP101 - © (GND)O
@
Caution:
Connect
oscillator
after
PP
pushed
and
servo
tunction
started.
Counter Osilloscope Check Step
Vv H (Volume) (Oscilloscope) 1. Push PP .
Y axis 2. Connect oscillator.
| 3. Set oscillator to 1.8 kHz/3 Vp-p
@
DC
range
VR104
es
4.
Switch
oscilloscope
input
to
X-Y
mode.
@X-Y
mode
_|
(3U-2415-1)
Ee,
Xaxis
|
5.
Adjust
VR104[T-GAIN]
to
symmetrize
@
1.8
KHz
4.8
KHz
Lisaajous
figures
to
X-Y
axes.
(+
120|
(+
120
Hz)
i
‘
Hz)
|
Phase
90°
@
If
the
focus
gain
is
not
properly
sauisted
|
@
3
Vp-p
|
the
waveform
becomes
as
per
the
lef:
(+
0.1V)
Waveiorm
nor
right
figure.
|
fi :
See. X axis |
!
Y ais |
X axis
Y axis
9. Tracking offset adjustment check
(1) Adjust tracking offset again.
(2) Push STOP button and stop disc.
(3) Push PLAY button and check disc turns.
Note: If disc does not turn, push PLAY button again and check track number G2 is displayed.
(4)
Check
oscilloscope
waveform
upper
and
lower
amplitude
are
same
to
base
line.
(Difference
of
verticai
amplitude
should
be
within
the
range
of
5%
to
the
base
line.)
(5) In case the height of waveform differs adjust the with the VR101.
(6) Push STOP button and stop disc.
22

Denon DP-S1 Specifications

General

Brand	Denon
Model	DP-S1
Category	Farm Equipment
Language	English