Mitsubishi Electric WD-57831, Service Manual, Page: 34 / 91

MODEL: WD-57831 / WD-65831 / WD-73831
Page 34
Prelminary
The only disassembly required to perform Optical Engine mechanical adjustments is the rear cover removal.
There are only two mechanical adjustments verical keystone and picture rotation. Adjustments are made using the
internal test pattern shown above.
Optical Engine Adjustments
Test Signal Activation
1) Press “MENU-2-4-5-7” (Service Mode)
2) Press “FF/FWD” (Test Pattern).
Required Tools
8MM Hex Wrenche
ROTATION
ADJUSTMENT
VERTICAL KEYSTONE
ADJUSTMENT
Red = 4% overscan
White = 5% overscan
Green = 6% overscan
Cyan = 7% overscan
Yellow = 10% overscan