Samsung MAX-440 - Page 30

8-3. CD section
TE CENTER
8-3-4. To Adjust Tracking gain (PLAY mode)
1) Connect;GND disconnector of the oscilloscope to VR and (+) disconnector to TP2.
2) Load and play the disc.
3)
While
the
disc
is
running
adjust
the
gain
with
NVR1704
as
shown
in
the
following
picture.
(Normal
frequency)
(Low
frequency)
(High
frequency)
FE CENTER
we bed
VOLT/DIV:
0.2V
VOLT/DIV:
0.2V
VOLT/DIV:
0.2V
TIME/DIV:
2mS
TIME/DIV:
2mS
TIME/DIV:
2mS
8-3-3. To Adjust Focus Gain (PLAY mode)
1) Connect; GND disconnector of the oscilloscope to VR and (+) disconnector to TP1.
2) Load and play the disc.
3) While the disc is running adjust the gain with NVR1703 as shown in the following picture.
(Normal frequency) (Low frequency) (High frequency)
Ps et ~250mv er
—100mv
—
50mv
ov
‘«
VOLT/DIV: OV VOLT/DIV: 0.1V VOLT/DIV: 0.1V
TIME/DIV: 2mS TIME/DIV: 2mS TIME/DIV: 2mS
MAX-440
8-3-2. To Adjust E/F Balance (PLAY mode)
1) Set TIME/DIV of the oscilloscope at 2mS.
2) Set Volt/DIV of the oscilloscope at 0.5V
3) At GND setting of the oscilloscope set the waveform at Ov
and then set it in the DC range.
4) Connect; GND disconnector of the oscilloscope t VR and
(+)disconnector to center of NVR1704.
8-3-1. To Adjust FOCUS BIAS (STOP mode)
ov
1)
Set
Volt/Div
of
the
oscilloscope
at
DC
100mV.
5)
Load
and
play
the
disc.
e
2)
In
GND
condition
of
the
oscilloscope,
set
the
waveform
at
OV,
6)
Turn
NVR1704
unclockwise
to
the
minimum
value.
and
then
set
it
in
the
DC
range.
7)
Raise
NVR1702
and
adjust
the
waveform
so
that
the
middle
of
A=B
3) Connect the GND disconnector of the oscilloscope at VR,
and(+) disconnector to center of NVR 1703.
4) By using NVR1701 set it at Omv.
wave comes to the GND of the oscilloscope or until the upper half
of wave form becomes symmetrical to the buttom half. (A=B)
8) Adjust NVR1704 in the arrow direction to achieve a normal sound
effect.
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