Hitachi CP-S235 Multimedia Projector Logo
John Lane Posted on Feb 20, 2007
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Hitachi cp-s235 projector- red lights and projector turns off

I use my projector for my classes and lately it has been coming up with two red lights for the power and lamp indicators. The projector then turns off the lamp and doesn't show anything on the screen. I have replaced the lamp and the filter and reset the timers on both of those to zero. I have looked in the manual and there is nothing about this error. Does anyone know what these red lights mean? Does anyone know how to fix this? Thank you.

  • glowy Dec 08, 2008

    The lamp on my projector doesn't come on nor does the lamp indicator light.

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Chris Goulet

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  • Posted on Feb 04, 2009
Chris Goulet
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There is a small tab on the lamp cover that should press into an "L" shaped slot on the lamp housing. This tab may break off, and not press into slot far enough to make the lamp dectection switch click. When the lamp heats up, the plastics expand and the detection switch opens. The projector quits as if no lamp is installed. The fix is to make an extension for the tab. I cut a small piece of sheet metal and crazy-glued it to what was left of the plasic tab.

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  • Posted on Jan 21, 2009
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Look on p.40 of the manual. It discusses this problem with the possibility that the lamp is not properly fitted into the unit. If adjusting the placement of the lamp doesn't work (I would actually take the lamp out and put it back in,) it could have an issue with a dirty air filter or overheating due to debris caught in the air cooling fan.

Here's the manual online:

http://www.hitachi-homeelectronics.us/supportingdocs/forhome/DisplayTechnologiesGroup/lcdprojectors/SupportingDocuments/01CP-S235-OG-ENG.pdf

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Anonymous

Www.touchboards.com/hitachi/pdf/01CP-S235-OG-ENG.pdf Have a look at page 40 this will give you some idea and the light problem. bye

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Flashing red light for lamp

There could be several causes for this. Does the cooling fan come on, it may be defective. There could be something blocking the heat sensor. Is it possible the connector didn't get fully attached when you installed the new lamp?
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My projector will not come on. the power light blinks green, then goes to red. the "lamp" light looks like it is coming on dimmly (red)

you need a new lamp:

http://www.shopvsc.com/Replacement-Lamps-for-Hitachi-Projectors-s/291.htm?searching=Y&sort=9&cat=291&show=50&page=1&f-CP-X201=105087
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To replace a bulb in the Hitachi CP-S235 LCD Projector, do I just unscrew the two screws under the plate underneath the machine? Are there any precautions I should take, like not handling the bulb? I have...

Yes to replace the lamp you need to remove the 2 screws. You can touch the lamp but I try not to. After the lamp is in you need to reset the hr timer for the lamp. to do this you need to look in manual on page 34.
If you do not have the manual you can get it here at link below.

http://www.aboutprojectors.com/pdf/hitachi-cp-s235-manual.pdf

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The change filter light keeps coming on

In the manual, it says you have to go in the menu to the OPTION submenu. Go down to FILTER TIME and hold the right arrow down for 3 seconds. It will then go into a mini-submenu that, when you press the up arrow, will reset the filter time to 0. The key is to hold down the right arrow initially for THREE+ SECONDS to get into the reset filter time menu. This is NOT the submenu that has RESET - EXECUTE. That is a different thing that doesn't reset filter & lamp time.

Here's the manual online:

http://www.hitachi-homeelectronics.us/supportingdocs/forhome/DisplayTechnologiesGroup/lcdprojectors/SupportingDocuments/01CP-S235-OG-ENG.pdf
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Hitachi cp-s235

Did you clean the air filter? You should vacuum it or use an air dusting can to clean it out.

Afterwards, reset the time in the menu. In the manual, it says you have to go in the menu to the OPTION submenu. Go down to FILTER TIME and hold the right arrow down for 3 seconds. It will then go into a mini-submenu that, when you press the up arrow, will reset the filter time to 0. The key is to hold down the right arrow initially for THREE+ SECONDS to get into the reset filter time menu. This is NOT the submenu that has RESET - EXECUTE. That is a different thing that doesn't reset filter & lamp time.

Here's the manual online:

http://www.hitachi-homeelectronics.us/supportingdocs/forhome/DisplayTechnologiesGroup/lcdprojectors/SupportingDocuments/01CP-S235-OG-ENG.pdf
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