Warning Temperature And Power Failure Protection - Sanyo PDG-DXL2000 Service Manual

Circuit Protections

Warning temperature and power failure protection

The projector will be automatically turned off when the internal temperature of the projector is abnormally high, or the
cooling fans stop spinning, or the power supplies in the projector are failed.
- I f both of the POWER and WARNING TEMP. indicators are flashing, it may detect the abnormal temperature inside
the projector. Check the following possible causes and wait until the POWER indicator stops flashing, and then try
to turn on the projector.
- I f the WARNING TEMP. indicator lights red, it may defect the cooling fans or power supply circuits. Check fans
operation and power supply lines referring to the chapter "Power supply & protection circuit" in the Chassis Block
Diagram section.
Possible causes
- A ir filters are clogged with dust particles. Remove dust from the air filters by following instructions in the "Air filter
care and cleaning" below.
- V entilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are
not obstructed.
- C heck if projector is used at higher temperature place (Normal operating temperature is 5 to 40 ˚C or 41 to 104˚F)
the projector is shut down and the WArNING
teMP. indicator lights red.
When the projector detects an abnormal condition, it is au-
tomatically shut down to protect the inside of the projector
and the WARNING TEMP. indicator lights red. In this case,
unplug the AC power cord and reconnect it, and then turn the
projector on once again to verify operation. If the projector
cannot be turned on and the WARNING TEMP. indicator still
lights red, unplug the AC power cord and contact the service
station.
CAutION
DO NOT LEAVE THE PROJECTOR WITH THE
AC POWER CORD CONNECTED UNDER AN AB-
NORMAL CONDITION. IT MAY RESULT IN FIRE
OR ELECTRIC SHOCK.
Indicators
WARNING TEMP.
emit a red light
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