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9. Vertical Center Input signal: Crosshatch Measuring instrument: Pattern generator/PAL 9-1. Set the TV to the "Normal I" mode. 9-2. Choose V. Shift from the menu screen. 9-3. Adjust the "Vol +/-" buttons on the remote control so that the dot mark at the center of crosshatch is positioned at the vertical center of screen.
10-2. S-Correction 1) Choose V. S Cor from the menu screen. 2) Perform adjustment in the same way as with 6-1 Slope. * Repeat adjustments 10-1 and 10-2 so that A=B=C is available. 10-3. Amp 1) Choose V. Amp from the menu screen. 2) Adjust the "Vol +/-" buttons on the remote control so that the dot mark at the center of crosshatch is positioned at the vertical center of screen, the circle is a perfect circle, and each crosshatch is square. * If vertical center is not correct, perform adjustment in 5. Vertical Center again.
CRT center mark
Fig.9-1
A
10. Vertical Size Input signal: Crosshatch (with circle) Measuring instrument: Pattern generator/PAL Set the TV to the "Normal I" mode for adjustment items 10-1 _ 10-3. 10-1. Slope 1) Choose V. Slope from the menu screen. 2) Adjust the "Vol +/-" buttons on the remote control so that the vertical length of each square is equal (A=B=C).
A
Fig.10-2
B
11. AGC Input signal: Color bar (ANT RF=Input) Measuring instrument: Pattern generator/PAL Test point: 1501 6 pin RF AGC 11-1. Receive the pattern generator frequency at Pr91. 11-2. Connect an oscilloscope to the test point. 11-3. Choose AGC from the menu screen. 11-4. Use the "P " button on the remote control so that the voltage at the test point is 2.5 VDC.
