Sanyo PLC-SU40 Service Manual

Also see for PLC-SU25: Owner's manual Specifications

-7-Circuit Protections● Warning temperature and power failure protectionThe projector will be automatically turned off when the internal temperature of the projector exceeds the normal oper-ating temperature, or the cooling fans stop, or the power supplies in the projector are failed.- If the TEMP WARNING indicator (red) is flashing, it may detect the abnormal temperature inside the projector.Check the following possible causes and wait until the WARNING TEMP indicator flashing stops, and then try toturn on the projector.- If both of the TEMP WARNING (red) and READY (green) indicators are flashing at the same time, It may defect thecooling fans and power supply circuits. Check fan operation and power supply lines referring to the chapter “Powersupply & protection circuit” in the Chassis Block Diagram section.Possible causes- Air filter is clogged with dust particles. Remove dust from the air filter by following instructions in the “Air filtercare and cleaning” below.- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots arenot obstructed.- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)Air filter care and cleaningThe removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror.Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may resultin internal heat build up and reduce the life of the projector.To clean up the air filters, follow the cleaning procedurebelow:1. Turn the power off, and disconnect the AC power cordfrom the AC outlet.2. Turn the projector up side down and remove air filter bypulling the latches of it upward.3. Clean the air filter with brush or wash out the dust andparticles.4. Replace the air filter properly. Make sure that the air fil-ter is fully inserted.CAUTION:Do not operate the projector with the air filter removed. Thedust is stuck on the LCD panel and the mirror, and it mayspoil the fine picture image.Do not put the small parts into the air intake vents. It mayresult in the malfunction of the projector. The air filters aresmall parts. Take care that children don’t eat or swallow it.RECOMMENDATIONWe recommend not to use the projector in dusty, smoky places. Using it in dusty place may cause the poor picturequality.When using under the dusty or smoky conditions, dust may accumulate on the LCD panel and lens inside it, andmay resultantly be projected on the screen together with the picture.When the above symptoms are noticed, please clean up the LCD panel and lens following to the “CleaningMethod”.Air filter