How to open and clean your Hitachi PJ-TX200

Intro

I found a tiny howto on the AVS Forum, this however was oriented on the PJ-TX100. I decided to photograph and explain my steps for those who wish to do the same.

The tools

The bare minimum is a philips screwdriver. You'll be better of having a few sizes of it, and some plain non-philips screwdrivers. If these are not magnetic, make sure you have something else which is. Otherwise you might spend an hour trying to get a fallen screw back out. Tools to open the PJ-TX200
Tools to open the PJ-TX200

Removing the cover

First off, we'll need to remove the cover to get to the inner workings. You'll also remove the lightbulb, as dust may collect their as well. The bottom of the PJ-TX200
The bottom of the PJ-TX200

Remove the lightbulb

Remove the cover that houses the lightbulb. Remove the 2 screws holding the lamp, and pull the lamp straight up, using the plastic grips.
After removal, clean it using your pressurized clean air. The cover of the lightbulb
The cover of the lightbulb

Remove the 2 screws
Remove the 2 screws

The lightbulb removed
The lightbulb removed

Unscrewing the cover

On the bottom of the beamer, you'll find 4 screwholes with black screws. and 1 silver screw. Remove the 4 black ones and unscrew the silver one (it won't go out).
Get the beamer back up on it's feet, and remove 2 screws on the back. You'll need to remove the most upperleft and upperright ones. Leave the other ones in place. The 2 screws holding the cover in place removed
The 2 screws holding the cover in place removed

Lifting the cover

Now we'll actually remove the cover. Beware, the controls on the top are attached internally, as depicted (the blue wires) - you'll need to detach it before lifting the cover entirely. You'll have to lift the back (where the connectors are), and lift it up & forward. In my case, I had to shift the lens upwards using the shift-controls on the top. Otherwise the downward facing lens held the cover stuck. The connector for the controls on the top
The connector for the controls on the top

Removing the logic board

The logic board covers the actual lens and displays. We'll need to disconnect all connectors and unscrew the logic board.
Do not remove the 4 screws on the logic board before removing the connectors; otherwise you won't be able to apply the force needed to remove them.

Detaching the logicboard from the case

The logic board is connected to the back of the casing with 2 screws. These are located underneath the video-connector and control-connector. The following picture show the before/after. Do NOT remove any other screws on the back, as you'll probably remove an internal cover. If you do so, this image will show you how this should have been positioned. The 2 screws still attached
The 2 screws still attached

The 2 screws removed
The 2 screws removed

Detaching the connectors

Detach all the connectors. The 3 connectors in the center, holding the ribbon-cable require you to first pull back the brown clips on the side. The logic board with all connectors still in place
The logic board with all connectors still in place

The 2 brown clips pulled back, to remove the ribbon cable
The 2 brown clips pulled back, to remove the ribbon cable

Unscrew the logic board

You can now remove the 4 screws holding the logic board.
Afterwards, lift the logic board upwards. Be carefull not to pull any wires to pieces if they cling to the board. The logic board ready for removal
The logic board ready for removal

Removing the final cover

We can now remove the final cover, thus exposing the inner workings. This is held in place with 4 plastic thingies. You'll also remove the thingie that holds the 3 ribbon cables in place.

Remove the ribbon cable thingie

You can remove the thingie that holds the 3 ribbon cables in place by squeezing the latches to the center, and pulling it upwards. The thingie holding the ribbon cables in place
The thingie holding the ribbon cables in place

And after removal
And after removal

Remove the final cover

4 plastic thingies hold the final cover in place. You can remove these using your nails; just pull upwards.
Then, just pull the final cover upwards; there should be no resistance. The 4 plastic thingies holding the final cover in place
The 4 plastic thingies holding the final cover in place

Remove the lens

To remove the lens, and be able to clean the actual inside of the displays and filters, you'll need to remove 2 screws.

Detaching the lens case

The 2 screws are located on the top, easily viewable; they are on the left and right of the respectively left and right ribbons; don't remove any of the very small screws. The 2 remaining screws
The 2 remaining screws

The 2 remaining screws removed
The 2 remaining screws removed

Removing the lens ring

Unfortunatly, I have no photos of this step. if you have removed the previous 2 screws, you should be able to pull the lens and lens case upwards; it will however be held back by the black metal ring near the end of the lens. I had some trouble removing this; the metal isn't so sturdy, and unscrewing the screws requires some force.
I was able to remove these screws eventually using a plain screwdriver (not philips) and turning it using some pliers.

Removing the lens case

We can finally remove the lens and lens case. Just pull it upwards; it should come out easily. The lens removed
The lens removed

Cleaning the inside

DO NOT TOUCH ANYTHING!
Only use clean, pressurized air. You may be wise to clean everything multiple times, saving you the effort of having to open it up again. The inside of the PJ-TX200; showing the filters and fan
The inside of the PJ-TX200; showing the filters and fan

The inside of the PJ-TX200; full view
The inside of the PJ-TX200; full view

The inside of the PJ-TX200; 2 of the 3 filters
The inside of the PJ-TX200; 2 of the 3 filters

The inside of the PJ-TX200; the fan
The inside of the PJ-TX200; the fan

The inside of the PJ-TX200; full view
The inside of the PJ-TX200; full view

Closing up

Don't waste time; after cleaning, close up quickly to prevent new dust from entering.
Don't forget to clean the airfilter on the side, and the lightbulb & inside of the lightbulb.

Useful links

Michiel Roding, 2007