Apple macintosh plus 服务手册
![Apple](https://files.manualsbrain.com/attachments/2c022a7d1a76dcd8f02c04aa8d97faf41b63902f/common/fit/150/50/8a691e9df6162751590e2cef93a951cf3a39c94b6949421016232655b22d/brand_logo.png)
Adjustments
Video - 15
Brightness and
Contrast
Contrast
1 Turn the external
contrast control fully
clockwise.
2 Turn the brightness
control fully counter-
clockwise so that white
lines are visible. Turn
the brightness control
clockwise until the white
lines just disappear.
3 Turn the external con-
trast control 1/8 of a
turn counterclockwise.
Brightness
External
Contrast
Control
Control