Warning Temperature And Power Failure Protection - Sanyo PLV-Z1X Service Manual

Circuit Protections
● Front cover switch (Door switch)
When the front cover is closed, the ready indicator lights
orange and the projector cannot be turned on.
While operating the projector, if the front cover is closed,
turn off the projector.
● 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.
- If the WARNING indicator is flashing, it may detect the abnormal temperature inside the projector. Check the fol-
lowing possible causes and wait until the WARNING 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.
- 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 35 ˚C or 41 to 95˚F)
How to check lamp used time
The LAMP REPLACE indicator will light when the total
lamp used time reaches 3,000 hours. This is to indi-
cate that lamp replacement is required.
The total lamp used time is calculated by using the
below expression;
=
T
Total lamp used time
T
eco: used time in the Eco mode
T
normal: used time in the Normal mode
You can check the lamp replace counter following to
below procedure.
1
Press and hold the POWER ON-OFF button on the
projector or the remote control unit for more than 20
seconds.
+
T
eco normal x (1.5)
2
The projector used time and lamp used time will be
displayed on the screen briefly.
Counter
Projector
Lamp
Normal
Total lamp used time
-6-
Door SW (inside the cabinet)
Projector used time
525H
100H
Eco 375H
Total 525H