Toshiba TDP-ST20E Service Manual page 48

Dim image
Substitute known good lamp.
Image brighter?
Substitute known good Main board.
Image brighter?
Replace the optical engine
Bad or missing tint or color.
Distorted image, excess noise, rolling, torn, frozen," Plaid" image, repeated single image or shifted image.
Make sure cables are good.
Check the color wheel delay index value in the service mode.
Image good?
Replace the Main Board
Yes
No
Yes
No
Yes
No
6-5
Chapter 6
Replace the lamp.
Replace the Main Board
Problem resolved