Question about Hitachi CP-X275 Multimedia Projector
Hi i just replaced my projector with a new bulb but it keeps turning itself off after about 4 minutes,when the fan turns on.i do think it's because i need to clean them but don't know how to,please could you help,thanks
Air flter is on the left of the projector; just click the plastic cover off and then vacuum the filter: if this doesn
Posted on Sep 06, 2010
You have thermal protection issues.
On some projectors, once the thermal protection has been activated once, it will activate again at a lower temperature!!!
Inside your Sanyo there are several temp sensors (they are actually temperature-sensitive resistors, called thermistors). I have seen this many times as an electronic technician working on multimedia projectors. For the techs out there, they are actually NTC thermistors (NTC= negative temperature coefficient, meaning as temp goes up resistance goes down).
Once a thermistor has activated to save your machine form heat damage, it may activate again at a lower temperature. The only solution is to take your projector to an authorized Sanyo warranty repair depot, and have the thermistors replaced in your machine.
Typically, there is a thermistor to monitor lamp temperature, and a thermistor to monitor optical block temperature. Better quality machines may have more thermistors, some machines only have one to monitor the lamp temperature.
Posted on Mar 30, 2009
SOURCE: Projector Reset
Hi Here is the info for you :: Caring For The Air Filter The air filter should be cleaned about every 100 hours. If the indicators or a message prompts you to clean the air filter, clean the air filter as soon as possible. If the soiling will not come off the air filter, or it becomes damaged, then it needs to be replaced. Please replace the air filter as soon as possible. memoWhen you replace the lamp, please replace also the air filter. Turn off the projector, and unplug the power cord. Allow the lamp bulb to cool for at least 45 minutes. Apply a vacuum cleaner to the top of the filter cover and the air filter to clean. If the soiling will not come off the air filter, or it becomes damaged, it needs to be replaced. If the air filter needs to be replaced, contact your dealer to prepare a new air filter. Tell the dealer your air filter type. Turn on the projector power, and reset the filter timer. (1) While the projector running, press the MENU button to open the menu. (2) Choose the ?OPTION? on the menu using the / button, then press the button or ENTER button. (3) Choose the ?FILTER TIME? using the / button, then press and hold theRESET button for 3 seconds. (4) Choose the ?RESET? using the button. memo Incorrectly resetting of the filter timer (resetting without replacement, or neglect of resetting after replacement) will result in incorrect message functions. Here is the link to the users manual :: http://www.aboutprojectors.com/Hitachi-CP-X1250-projector.html Further Questions ?? Email Me firstname.lastname@example.org Have a great evening.
Posted on May 05, 2007
With most projectors there is a foam air filter behind a grill that is the opening to the cooling channels. A fan ensures air flow to cool the lamp, etc. This filter prevents dust from gumming up the works (and depending on design) may prevent dust getting into the optics. As the filter gets dirty it gradually cuts off the air and at some point a protective circuit kicks in and turns off the lamp.
If the projector is on you will feel a stream of hot air coming out of the exit vent. Projectors vary in terms of amount of air flow, so its difficult to define what is normal for a specific model. However, you can simply hold a hand in front of the vent and see if there is air flow (It will be hot air so, careful). If there is a "good" stream of air things are fine, but if only a very light flow is felt the filter may be dirty.
If the filter has not been cleaned or replaced recently make sure the projector is turned off and cooled down then take off the inlet cover and remove the filter. Clean or replace per the instructions for the projector (and periodically as defined .. but taking into account the operating conditions). Once cleaned turn on the projector and feel the "normal" air current for future reference.
Heat is one of the major causes of projector failure, so make sure cooling vents (inlet and outlet) are not obstructed and filters are kept clean
Posted on May 19, 2008
does the "lamp/cover"-led light up? i had the same thing happening, the lamp either broke or is about to break and the projektor won't turn it on again to protect itself. if its very urgent, open the projector pull the lamp out and put it in again, it might work for 1 or 2 more times, but it is very likely to explode (usually not breaking the projector but for sure not good for it).
Posted on Aug 04, 2009
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Posted on Jan 02, 2017
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