JVC VF-P116E, Руководство по обслуживанию

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Measuring Measuring point ( * )
No. Item instruments & Adjustment parts (
-
) Adjustment procedure
Input signals Adjustment level (
+
)
Measuring Measuring point (
*
)
No. Item instruments & Adjustment parts (
-
) Adjustment procedure
Input signals Adjustment level (
+
)
1 V. amplitude
adjustment • Resolution chart or
Registration chart
1) Shoot the resolution chart or registration chart
so as to take the central circle of the chart as
large as possible.
2) Adjust the V. HIGHT control so that the central
circle of the chart shows a perfect circle.
3) If the central circle looks elliptical, fine adjust
the H.LIN control(L4) to correct it.
2.9 ADJUSTMENT OF V.AMPLITUDE (for 4:3)
1 Centering
adjustment 1) Set the BRIGHT and CONTRAST controls on
the front panel to the mechanical center posi-
tion respectively.
2.7 ADJUSTMENT OF CENTERING
-
V. HEIGHT(VR501)[VR]
-
BRIGHT(VR8)[VR]
CONTRAST(VR1)[VR1]
1) Reduce the raster part by tuning the H.LIN and
V. HEIGHT controls.
-
H. LIN(L4)[MAIN]
V. HEIGHT(VR501)[VR]
1) Adjust the DY centering magnet of the deflec-
tion yoke so as to position the raster part in
the center of the CRT.
-
DY centering magnet
[Deflection yoke]
1 H. linearity
adjustment • Resolution chart of
Registration chart
1) Shoot the resolution chart or registration chart
so as to take the central circle of the chart as
large as possible.
2) Adjust the H.LIN control so that the linearity of
the picture is aligned in both the sides.
2.8 ADJUSTMENT OF H.LINEARITY
-
H. LIN(L4)[MAIN]
1 Sub-brightness
adjustment 1) Set BRIGHT and PEAKING controls on the front
panel to the minimum position, while set the
CONTRAST control to the maximum position.
2) Adjust the SUB BRIGHT control so that the
raster is seen dimly.
2.10 ADJUSTMENT OF SUB-BRIGHTNESS
-
SUB BRIHT(VR7)[MAIN]
1 Focus
adjustment 1) Shoot an object by the camera.
2) Set the CONTRAST and PEAKING controls on
the front panel to the mechanical center posi-
tion respectively.
3) Turn up and down the brightness with the
BRIGHT control on the front panel while ad-
justing the FOCUS control to obtain the best
focus.
2.11 ADJUSTMENT OF FOCUS
-
FOCUS(VR6)[MAIN]
Raster part
CRT screen
Protecive glass of CRT
Fluorescent screen of CRT
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