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1-4. MONOCHROME ELECTRONIC VIEWFINEDER
SYSTEM ADJUSTMENT
1-4-1. Horizontal Slant Check
Mode
Playback
Signal
Alignment tape :
For checking operation
Monoscope section
Specified Value
± 1.5°
Adjusting method:
1)
Adjust RV904 (BRIGHT) (VF-129 board) so that the CRT can
be seen easily and clearly.
2)
Check that the difference between the horizontal line and the
tilt of black mask satisfies the specified value.
Holizontal line
Specified value : The image should be within ± 1.5 °
of the holizontal line.
Fig. 5-1-11.
Aberration adjustment
Centering adjustment
Fig. 5-1-12.
VF-129 BOARD
W901
RV904
F.B.T
(WR5-5NSP)
θ
± 1.5 °
θ
Focus adjustment
DY tightening screw
RV903
C909
SOL901
IC901
CN902
1-4-2. Centering Adjustment
Mode
Signal
Specified Value
Adjusting method:
1)
Use the centering adjustment ring and adjust so that the left,
light, top, and bottom sides of the display are uniform. (Refer
to Fig. 5-1-12.)
Note: As the centering position changes due to earth magnetism, rotate
it 360° in the horizontal direction, and adjust with the center
section of the modifying position.
± 4%
Adjustment value : ± 4%
1-4-3. Focus Adjustment
Mode
Signal
Adjusting method:
1)
Adjust the focus ring to obtain the optimum focus. (Refer to
Fig. 5-1-12.)
5-21
Playback
Alignment tape :
For checking operation
(WR5-5NSP)
Monoscope section
± 4%
± 4%
Fig. 5-1-13.
Playback
Alignment tape :
For checking operation
(WR5-5NSP)
Monoscope section
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