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VIII. Alignment after Light Engine Assembly Replacement
After the light engine replacement, check and adjust the mechanical lens position,
mechanic
al lens focus, & electrical picture position if necessary:
Adjustments after Light Engine Assembly Replacement
Adjustment
1. Mechanical Position
2. Mechanical Focus
3. Elec
trical Horizontal Position
4. Electrical Vertical Position
Procedure:
1. Connect a cross hair generator to a video input – use the TV's full view mode as
shown below in figure 53.
2. If the horizontal and vertical cross hairs are not parallel with the bezel frame
(figure 53), perform the mechanical position adjustment (steps 3-5) after you
have rechecked the chassis mounting position. Otherwise, skip the positioning
steps 3-5 and proceed to the mechanical focus adjustment (steps 6-8).
Mechanical position adjustment:
3. Refer to figure 53. Remove the access-port cover, located behind the decorative
co
ver. Two screws hold
4. Refer to figure 54. Loosen the four lens mounting-screws inside the port
(circled).
5. Position the lens by grasping its bottom and wiggling the assembly to achieve the
best alignment of the horizontal and vertical cross hairs with the notches on the
frame (figures 53 & 54).
Front panel access port
Front panel access port
Remote
Remote
Frame
Notches
Figure 53 - Mechanical position adjustment
the cover in place.
Using
Cross hair pattern generator
Cross hair pattern generator
Cross hair pattern generator
Cross hair pattern generator
Frame
Notches
Access port (cover removed)
55
Test Equipment
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