Align The Focus - Samsung HL67A750A1FXZA Service Manual

※ Even when those screws are loosened, the board does not separate it can be moved within the adjustable range because there
are spring screws at the center holding it.
※ When adjusting the screen, it is better for two people to work together.
One person should adjust the picture position while the other person looks at the screen.
※ The movement direction of the board and the picture are opposite.
- When the board is lifted upward, the screen descends down.
- When it is tilted to the left, the screen tilts to the right.
※ When the picture adjustment is completed:
First, tighten the two screws on the left of the DMD board and then slowly tighten the one screw on the bottom right.
Be careful not to touch the board while tightening the screws.
(When using an electric-powered screwdriver, be careful that the torque is not too high.)
■ Align the Focus
1. Remove the 2 screws.
: TH,B,M4.L15,BLK,SWRCH18A
3. Adjust the Lens Focus
Samsung Electronics
Focus Alignment
Focus Alignment
1) Input a Crosshatch pattern or enter service mode and use
the internal generated patterns.
2) Insert your hand/finger into the unit as shown in the figure
and adjust the focus alignment dial of the Projection Lens
Clockwise or Counter Clockwise (See picture in step 4) until
the picture is clear.
3) Since the alignment is done from the rear use a mirror or
a second person to confirm the adjustment is complete or
remove the side port and view the screen through the port
on the side for Focus Alignment.
Troubleshooting
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