Philips LC4246, LC4242 manual Maintenance

9. Maintenance

Cleaning

Caution!

Switch off and disconnect the projector before cleaning.

1.When the cabinet is dusty, clean it by gently wiping with a soft cloth.

2.A chamois leather slightly moistened with water is sufficient for cleaning the housing.

3.Do not use cleaning agents as they may harm the housing.

Always keep the lens clean

1.When the lens is dirty or dusty, first blow the dust off and then gently wipe with a soft brush or lens cleaning paper. Never touch the lens with your fingers.

2.The lens is likely to become mouldy if left dirty.

Cleaning the dust filter

1.Press the STANDBY ON/OFF button to switch off the

projector.

–The standby indicator lights up red.

2.Wait until the cooling fan has stopped (about 3 minutes after the projector has been switched off) and disconnect the mains lead and all other cables.

3.Turn the projector over. Never place the projector on the side where the connections are located!

4.Unscrew and remove both horizontal adjusters.

5.Unscrew the screws at the bottom of the cover and remove the cover.

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6.Remove the filter from its compartment.

•Press both sides of the filter (a) until it comes loose from the clips (b).

•Move the handle to the left (c).

•Remove the handle from the catch and lift upwards (d).

•Carefully lift the filter out of its compartment.

b	b
a	a

c

8.Replace the filter:

•Press both sides of the filter (a) and place it back into its compartment.

•Loosen the sides of the filter so it will fall back in position under the clips (b).

•Position the handle under the clip (c).

•Slide the handle over the catch and click it back in position (d).

b	b
a	a
c

d

9.Replace the cover and tighten both the screws and the horizontal adjusters.

Notes: – We advise you to clean the filter every 100 hours.

–Operating the projector with a torn or damaged filter may cause damage to the projector.

–When the filter is damaged replace it with a filter of the same type (12 nc: 4822 480 10229).

–The projector power cannot be switched on again unless the filter holder is installed correctly.

Maintenance of your remote control

Your trackball on the remote control is very durable and will provide years of use. It has a self-cleaning ball-cage that helps prevent dust and lint built-up around the ball. If the screen cursor jumps or moves abnormally, we recommend that you clean the trackball manually.

To clean your trackball

1.Turn the retainer ring counter-clockwise to remove the ball.

2.Wipe the ball with a clean, lint-free cloth.

3.Blow carefully into the ball cage to dislodge dust and lint.

4.Look for a build up of dirt on the rubber rollers inside the ball cage. This build up usually appears as a stripe running around the middle of the roller.

5.If dirty, clean the rollers using a cotton swab moistened lightly with isopropyl (rubbing) alcohol. After cleaning, make sure the rollers are still centered in their channels.

6.Make sure that fluff from the swab is not left on the rollers.

7.Replace the ball and retainer ring.

d

7.While firmly holding the filter, gently remove any accumulated dust with a vacuum cleaner.

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