GRUNDIG ST 55-998 DOLBY
Manual de Servicio

Abgleich / Alignment

CUC 2103/M, 2121/M

Alignment 9. Line Sharpness

Preparations Colour video generator: Feed in a convergency test pattern. Contrast: maximum Set the screen brightness so that the black background of the test pattern just starts to brighten.

Alignment Process With focus control UF, adjust the vertical lines approx. 5cm from the right and left picture edge to minimum horizontal width. The sharpness in the middle must not seem to be worse than the sharpness at the edges. If necessary, take an average. Adjust according to the test pattern using button or .

10. Vertical position of the picture (Vertical Shift) 10.1 Vertical Amplitude 10.2 Vertical Linearity

Colour video generator: Feed in a geometry test pattern. Call up the "Vertical Shift" menu via " " (DIALOG CENTER) �> "OK" �> SERVICE �> "OK" �> Service Code "8500" �> "GEOMETRY" �> "OK". Call up the menu "Vertical Amplitude". Call up the menu "Vertical Linearit.".

Set the vertical amplitude using button

or

. or .

Adjust according to the test pattern using button

10.3 Horizontal position of the picture (Horizontal Shift)

Call up the menu "Horizontal Shift".

Adjust according to the test pattern using button

or

.

Go back to the "SERVICE" menu with " " and terminate the dialog line "End" "with mem" �> "OK".

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GRUNDIG Service