Samsung CS-21Z57MN Service Manual page 30

Alignment & Adjustment
3-6-2 Adjusting the Screen Voltage
1. Select "Power Off →Info → Menu → Mute → Power On" to enter Service Mode.
2. Initialize all settings to the values appropriate to the corresponding model.
3. Display the Toshiba pattern.
4. First check IBRM in "G2 Adjust" of Factory and adjust Screen VR until the color of IBRM item turns green.
3-16
SCREEN
VR
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