Bang & Olufsen BeoVision 10-40, Service Manual

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Adjustments 3.5
Picture adjustments
Correct adjustment of all parameters can only be obtained by using special test
signals and equipment for light measurement.
Before entering the Service Menu you must first apply the signal you want to
adjust. The ADC Adjustments, Picture Offsets and Scaler menu allow you only to
adjust the signal currently applied. To adjust e.g. VGA you must apply a VGA
signal and select it to be displayed on the TV before entering the Service Menu.
Before changing any values in the Service Menu, we strongly recommend that you
write down the old values.
Adjustment of the specific parameters is not described.
Picture settings (TV – MENU – PICTURE)
Brightness Contrast Colour
Middle position Middle position Middle position
Picture adjustments
1. Check the picture quality.
2. If adjustment is necessary, insert default factory values.
3. Confirm the picture quality.
Default factory values
Area Default factory Actual
ADC adjustments YPbPr D-sub
Red offset 000 001
Green offset 015 001
Blue offset 000 001
Red gain 058 093
Green gain 054 092
Blue gain 057 091
Auto black level 001 001
Video AGC 001 001
Clamp delay 001
PLL phase 000
White point adjustments
Red gain 255
Green gain 254
Blue gain 243
Red offset 032
Green offset 032
Blue offset 032
Blue stretch 001
Picture offsets
CVBS/YC/TV
BV10-40 BV10-46
Brightness 0032 0030
Colour 0030
Contrast 0030