Sony SLV-286EE - Adjustments after Replaceing

4-1-10. Adjustments after Replaceing the Drum
(Video head)
Purpose: Co-relative height, X-value and other factors of
the drum will deviate from those of the guide
roller. If the drum in replaced properly, these
deviations are extremely small.
Precaution : Turn off the auto tracking and set the manual
tracking mode.
=
Measuring
instrument
/jig
Measuring
point
Adjustment
locations
Alignment tape (JVC-MH-1 1kHz),
blank tape
Oscilloscope
CH-1: PB RF pin of connector for RF
board check
CH-2: RF SWP pin of connector for RF
board check
Roller post (Section 4-1-7)
X-value (Section 4-1-9)
Switching position (See the Service Man-
ual)
Before performing this adjustment, Track-
ing Preset Adjustment must be always
performed. Turn off Auto Tracking and
set to Manual mode.
[Adjustment method]
Playback blank tape
Is there any curl or
wrinkie near roller post
No
Playback the alignment]
tape (Hi-Fi 400Hz)
Section 4-1-9.
X-Value Adjustment
Switching position
adjustment (See the
service manual)
RF output:ls the RF
Output at maximum
when tracking is set at
the center position ?
Section 4-1-9.
X-Value Adjustment
Check/adjustment
completed.
Section 4-1-7. Roller
Post Height Adjustment
Before performing this adjustment, tracking
preset adjustment must be always performed.
Turn off auto tracking and set to manual mode.
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