Sharp SL-550 Guia de Resolução de Problemas descarregar pdf (Página 24)

Set-up/Operation • A-24 •

Changing the Arc Lamp Projector Bulb

The main projector bulb is located in the rear of the projector in a pull out drawer that

is secured with locking screws. The light from this bulb is transferred to the projector

head via a ber optic cable that runs from the back of the projector to the projector

head and looks like a corrugated metal cable. The replacement projector bulb looks

similar to the type of bulb found in an overhead or slide projector.

Before attempting to change the projector bulb, disconnect the projector from the

power supply and remove the small black motor plug from the back of the projector.

(This plug provides power to the motor that rotates the cylinder plate.) It is also helpful

to have a second person assist you in changing the bulb. Loosen both locking screws

on the sides of the metal plate on the back of the projector.

Once these knobs have been loosened, carefully slide the drawer out of the back of

the projector. The bulb is located behind the circuit board and is held in place by

two U-shaped metal locking tabs and a metal locking bar. To release the bulb from its

housing, gently pull the two metal tabs toward you from the top and slide the metal

locking bar up and over the tabs. Once the locking bar has been removed, gently

push back on the two U-shaped metal locking tabs and the bulb will begin to slide

back out of its cylindrical housing. When the front of the bulb is clear of the housing,

lift it up and out of the projector by the ceramic base. Two wires will be attached to

the back of the bulb via a black plastic connector. Pull the connector from the back

of the bulb and plug in the replacement bulb. Please note that the plug polarized so

that the connector on the back of the bulb will only attach in one direction. You might

have to rotate the bulb 180 degrees to get it to plug back in correctly.

When you have plugged in the replacement bulb, push back on the two metal tabs

again and slip the new bulb into the back of the housing.

Note

Go slowly! Do not force the bulb in place or you may crack its ceramic hous-

ing!

Once the new bulb is properly seated inside the cylindrical housing, pull the two

metal tabs forward again and ip the metal locking bar over them securing the

bulb. Slowly slide the drawer back into the projector making sure you don’t catch

any loose wires in the drawer. When the drawer is all the way back in position, you

should hear a slight click. Tighten the two screws on the drawer. Replace the plug for

the motor drive and plug the projector back into the power supply. Turn the projector

on to test the bulb.

If the bulb does not light, it may be because the drawer has not been pushed back

in all the way. There is an inter-lock in the drawer that disconnects the power and if

it is not properly set, the power will not go to the bulb. (This is the click that you hear

when you push the drawer back.) To test this, loosen the locking screw and push the

drawer back in again. Then re-tighten the screw. If the bulb still doesn’t light, the bulb

may have been damaged when you put it in the housing. Call Science First/STARLAB

at 1-800-537-8703 for assistance.

Changing the Fuse on the FiberArc Projector

On the STARLAB FiberArc Projector, the fuse is located inside the assembly where

the power cord attaches to the back of the projector. To access the fuse, you must

unplug the power cord from both the wall outlet and the back of the projector. Don’t

misplace the cord because you will need it to operate the projector later! With the

cord removed, look inside the power outlet and you should see a small horizontal slot

Shown above is the pull out drawer with two

locking screws.

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 35 36

Comentários a estes Manuais

Sem comentários

Sharp SL-550 Guia de Resolução de Problemas Página 24

Comentários a estes Manuais

Manuais e produtos relacionados com Projetores de dados Sharp SL-550