Sony Video8 CCD-F501 Service Manual page 234

8-5-2. Centering Adjustment 8-5-4. Horlzontal Amplitude Adjustment (VF-26 Board)
Mode Playback Mode Playback
Alignment tape for checking operation Alignment tape for checking operation
Signal (WRS-SNSP) Signal (WRS-SNSP)
Monoscope portion Monoscope portion
Specified Value See Fig. 8-52. | Adjustment Element | C905
Specified Value 6+ 3%
Adjustment method: :
1) Tum the centering adjustment rings to provide an image Adjustment method:
with even right, left, upper and lower margins. (See Fig.
8-51.)
Note: Since the centering position is affected by the earth
magnetism, tum the equipment over 360° horizontally,
and make adjustments at the orientation which exhibits
median displacements of the image.
Centering adjustment rings
1) Line up the upper and lower sections of the monoscope
image with the upper and lower edges of the screen by
rotating volume array @ (V SIZE). (See Fig. 8-50.)
2) Rotate volume array © (BRIGHT) to set the brightness to
the normal level.
3) Short or open thé pattem [A
of the H size adjustment
capacitor (C905) to provide horizontal overscans of 6 + 3%
(total of left and right).
(See Fig. 8-54.)
100% ———+|
3%—+| Le +b 3%
oO
: d
7 t
Hl Hl
H ii
? —
ie -
12.5% 12.5%
Fig, 8-53.
1
901
NY
=a
Fig. 8-51.
gel acl a a See 1
t 1
' 1
1 1
1 1
' 1
fi 1
1 1
t 1
24% se: eae ee a
Adjustment value: + 4% £4%
Fig. 8-52.
8-5-3. AFC Adjustment (VF-26 Board)
Mode E-E or Camera standby
Signal Color bar
Measurement Point C915 @ side
F Digital voltmeter or oscilloscope
Measuring Instrument (DC range)
'Adjustment Element | Volume array ® (AFC)
Specified Value 2.6 + 0.2 Vde
Adjustment method:
1) Adjust volume array ® (AFC) for 2.6 + 0.2 Vdc. (See Fig.
8-50.)
pe pee tie ed a
VF-26 Board
(conduuctor side)
Asection H size
Open Large
Short Small
Fig, 8-54,
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