Sanyo PLC-XL51A, Руководство по обслуживанию, Страница: 7 / 146

- 7 -
Circuit Protects
The projector will be automatically turned off when the internal temperature of the projector is abnormally high, or the cool-
ing fans stop spinning, or the power supplies in the projector are failed.
- If the WARNING TEMP. indicator is flashing, it may detect the abnormal temperature inside the projector. Check the follow-
ing possible causes and wait until the WARNING TEMP. indicator stops flashing, and then try to turn on the projector.
- If the WARNING 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
- Air filters are clogged with dust particles. Remove dust from the air filters by following instructions in the “Air filter care and
cleaning” below.
- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are not
obstructed.
- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 40 ˚C or 41 to 104˚F)
Warning temperature and power failure protection
the projector is shut down and the WARNING tEMP.
indicator lights red.
When the projector detects an abnormal condition, it is auto-
matically 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, it may defect
the cooling fans or power supply circuits.
CAUtIoN
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER
CORD CONNECTED UNDER AN ABNORMAL CONDI-
TION. IT MAY RESULT IN FIRE OR ELECTRIC SHOCK.
Indicators
WARNING TEMP.
emit a red light
WARNING
TEMP.
WARNING
FILTER