Toshiba P503DL service manual Light Engine Block, DLP Engine adjustment

6.LIGHT ENGINE BLOCK

CAUTION

Be careful to prevent the ESD (Electro Static Discharge) before touching the DLP Engine. If ESD happened, important key components including DMD device may easily damaged. This electro-static destruction will not be covered by Texas Instruments guarantee.

For ESD prevention, use conductive wrist strap and connect the wire to the metal frame of the projection engi ne.

The light engine is Placed on the mechanical Adjustment platform.

When adjustments for

5 0 ? ? ? ? ? ?

50-pin connector

Lamp Ballast connector

? ? ? ? ? ? ? ?

? ? ? ? ? ?

Power connector

3 0 ? ? ? ? ? ?

30-pin connector

? ? ? ? ? ? ? ? ?

Lamp power connector

picture position or distortion are necessary, electronics adjustments will not compensate the image.

To perform, mechanism adjustments are necessary. The adjustment table (platform) needs to be adjusted at the right place but before doing this adjustment, it is important to set

an electronic position adjustment should be at the center.

Lamp power selection à switch locates here

Light Engine
placement
guide pins	at bottom

ADJUSTMENT

. 1. DLP Engine adjustment

When DLP E ngine is replaced, most of occasion, following adjustments are needed.

New DLP engine may have some position displacement. The engine mount base has limited adjustment range but enable to cover most of position adjustment.

1)Loosen and release the screw tension which are used to fasten engine mount

base (E) (I) (J) (K), to avoid any displacement during transportation.

(A)

2) Lens Focus Adjustment

Before doing mechanical position adjustment,

Check if optical focus is out or not.

If the displayed picture, possibly using internal

Test signal, cross -hatch, did not appear sharp,

Then lens focus needs to re-touched

? ? ? ? ? ( ? ? ? ? ? ? )	(H)	(I)
(D) (E)

(C) (F)	(B)	(K) (J)
	?	? ? ?

focus adjustment knob

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