akira PTV-50H08, Руководство по обслуживанию, Страница: 11 / 67

Focusing Case
cut-off G
cut-off R
cut-off B
Focus B
Focus G
Focus R
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Model No.: PTV-50H08
Version: 1.0
b. The Focusing Case
Adjustment procedure
Screen Control (CUT OFF) Adjustment (I2 BUS)
Preparation of Adjustment:
1 The pre-aging has been finished.
2 Turn shield grid potentiometers R, G and B respectively counterclockwise slowly to the status with a
dark picture. (Avoiding the burn of projection tube)
Adjustment Procedure:
1 Enter the “M” status with the remote controller: press Key Still on the remote controller to enter the
status of a bright line.
2 Adjust Clockwise slowly the red, green and blue screen control potentiometers on the focusing
assembly respectively until corresponding bright red, green and blue lines are emerging slightly on
the screen.
3 Press Still to exit the status of a bright line.
4 Press the channel plus key on the front panel to exit the “M” status.
Adjustment on Raster Inclination
Preparation of Adjustment:
1 Place the TV set with its face to the east or west.
2 Let the TV set receive the pane signal of PAL system.
3 Set the contrast to maximum with others medium.
4 Turn on the TV set with Key SK01 pressed to enter the status of under convergence and display the
convergence mesh.