Sharp SL-550 Guia de Resolução de Problemas descarregar pdf (Página 16)

Set-up/Operation • A-16 •

Before replacing the projection lamp, it is a good idea to make sure that the bulb is

indeed burned out. There are several places where the power to the bulb can be-

come disrupted, making it appear that the bulb has blown. First check to see that the

projector itself is plugged in and that there is power. The side lamps and daily motion

drive should be able to work even if the projector bulb is burned out. Next check the

back of the projector and make sure that the smaller plug that provides power to the

projector head is plugged into the back of the projector. (This plug will occasionally

become tangled in the projector wire and might become loosened when the projector

is rst unpacked.) Next, look at the head of the projector and make sure the two “ba-

nana plugs” that carry the power from the top of the projector to the projector lamp

housing are plugged in tightly. (These sometimes are loosened when the protective

netting is removed from the projector head.) Refer to the accompanying graphics.

If all of the plugs are secure, rst reseat the existing bulb to make sure that a con-

nection problem is not the cause. Remove the old lamp from its socket by pulling it

straight up. With your ngers, straighten the two wire leads on the old bulb and set

them so that they are about 4 mm (5/32 inch) apart. Shine a ashlight straight down

into the empty projector head. You will see four slots, two with metal sleeves and

two without. Slowly insert the wire leads into the two metal-lined slots in the projec-

tor head. They should slide in about  inch. Stop when you feel resistance. MAKE

CERTAIN THAT YOU DO NOT BEND THE LEADS!

When the bulb is properly seated, the top of the bulb should extend about 1mm

above the top of the projector head. Plug in the projector again and turn on the

power. If the bulb still does not light, turn off the projector, remove the old bulb and

discard it. Do not put it back into the yellow accessory box! Take a fresh bulb out of

the accessory box. Each projector bulb is stored inside a small red plastic cap with

a white foam plug in the end. Slowly pull out the foam plug. It will have the two wire

leads from the new bulb embedded in it. Remove the bulb from the foam plug and

straighten the leads with your ngers. Insert the new bulb into the projector head the

way you did before and test the bulb by turning on the projector. If the bulb still does

not light, go to troubleshooting tips on page 33.

Changing the Fuse on the Standard Projector

On the STARLAB Standard Projector, the fuse is located at the rear of the projector

next to the small black knurled fuseholder cap with the label “1 Amp.” To access the

fuse, unscrew the cap by turning it counterclockwise. The old fuse should come out

with the cap.

Replace the old fuse with a new one (available from Radio Shack Part #270-1021 1

Amp, 250V. 1” x ”). Then push the cap back onto the fuseholder base. Push it in

slightly while turning clockwise to screw the fuse and cap back into place.

The banana plugs should be plugged

in tightly.

The projector lamp plug shown up

close on right.

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