PG-C20XE (serv.man5). Section 2 - Service Manual Text - Sharp Projector Service Manual (repair manual). Page 21

Lamp assembly (bottom view)

Screw B

Screw A

Screw C

D

This adjustment is needed when any of the optical parts of the optical mechanism has been replaced.
1. Disconnect the flat cables from all the LCD panels.
2. Light up the lamp.
3. Project a white-light image and check to see if there is any color tint in any direction. If any, loosen the incident-light

fly-eye adjusting plate lock screws and readjust the fly-eye to get the image uniformly whitish. Tighten up the lock
screws.

4. If by any chance the above step 3 fails, use the M1, M4 and M5 adjusting levers.
5. Before moving the M5 adjusting lever, shield the G and B color beams. (For shielding them, use reflective sheets

that reflect the incident lights.)

6. Loosen the adjusting lever lock screws, make adjustments, and tighten up the lock screws.
7.  Before moving the M4 adjusting lever, shield the R and G color beams.

Front

M4 Adjusting lever

Lock screws
(yellow)

Shielding plate for B

Shielding plate for R

Shielding plate for G

M1 Adjusting lever

M5 Adjusting lever

Lock screws
(yellow)

Lock screws
(yellow)

Lock screws
(yellow)

incident-light fly-eye 
adjusting plate

If color irregularities are found at the right and left on a white-only screen after replacing the lamp, it is necessary to
readjust the optical axis of the new lamp. Take the following steps.
1. Open the lamp cover and loosen the screws A, B and C at the bottom of the lamp.
2. Using a screwdriver or the like, move the U-shaped groove at the window D in the arrow direction.
3. Temporarily fix the screws A, B and C, close the lamp cover, and check the white-only screen again for color

irregularities.

4. Repeat the above steps 1, 2 and 3 until there will be no color irregularities. Now tighten up the screws A, B and C.
5. Finally secure the lamp cover back in position.