Denon DCD-3300 - Page 21

(7) Adjustment of Focus Offset
@ Adjust it in the same condition as to focus gain,
push play button (» PLAY) to activate all servo
for adjustment except the measuring equipment
connections.
@ Connection of measuring equipment
Note: Audio oscillator should be connected dur-
ing the servo operation.
@ Connect the respective measuring equipments
to the test points TP-201 of servo main P.W.B.
(KU-6040) and TP-401 of servo pre P.W.B.
(KU-6050) as per illustration.
Oscilloscope
HF
Pin @ of TP-401
Pin @ of TP-401
Pin @ of TP-201
Pin @ of TP-201
Audio Oscillator
Set to 1.1 kHz 3.0 Vp-p
Frequency Counter
8) Adjustment
@
Set
the
output
of
audio
oscillator
to
1.1
kHz,
@
A
waveform
to
observe
in
this
time
called
3.0
Vp-p (40.1
V).
“Eye
Pattern’”’.
@ Select oscilloscope input mode at CH-1 and set @ Adjust VR-402 for a minimum jitter amount.
it to 50 mV/DIV or 20 mV/DIV (use 10:1
probe).
Observe by setting the sweep time to 0.2 or
0.5 us/DIV range.
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a ee es &
vty
—
Adjust the waveform for most fine line. :