Apple Macintosh Performa 577 - Manual (Page 140)

Adjustments Video - 19
8 Use Display Service
Utility to display the
All-White Screen test
pattern.
9 Using the light meter,
adjust the sub-contrast
control (SC) until the
luminance measures 33
feet lamberts (± 3 foot
lamberts), which on the
light meter is
• Model R77: 25 on the
bottom scale
• Model L-248: middle
of the 10 scale
• Model 246: 25 on the
red scale
All-White Screen