PT-VX505NU, PT-VX505NE, PT-VX505NEA, PT-VW435NU, PT-VW435NE, PT-VW435NEA (serv.man2) — Panasonic Projector Service Manual (repair manual). Page 8

View Panasonic PT-VX505NU / PT-VX505NE / PT-VX505NEA / PT-VW435NU / PT-VW435NE / PT-VW435NEA (serv.man2) Service Manual online

-8-
Circuit Protections
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.
Warning temperature and power failure protection
The projector is shut down and the WARNING indicator lights red.
When the projector detects an abnormal condition, it is automatically shut down to protect the inside of the projector 
and the WARNING 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. 
WARNING
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD CONNECTED UNDER AN 
ABNORMAL CONDITION. IT MAY RESULT IN FIRE OR ELECTRIC SHOCK.  
Note:
- 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” and "Fan control circuit" in the  
  Chassis Block Diagram section.
When the temperature inside the projector reaches a certain level, the projector will be automatically shut down to 
protect the inside of the projector and the WARNING and ON(G)/STANDBY(R) indicators start blinking. When the 
projector has cooled down enough (to its normal operating temperature), the ON(G)/STANDBY(R) indicator stops 
blinking and lights red, The projector can be turned on again by pressing the  
button.
Note:
The WARNING indicator continues to blink even after the temperature inside the projector returns to normal. When 
the projector is turned on again, the WARNING indicator stops blinking.
Check items
- Remove dust around  the air filter.  
  
- 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.
The projector is shut down and the WARNING indicator is blinking red.
LED indicator
WARNING 
indicator
ON(G) / STANDBY(R)
indicator
Page of 127
Display

Click on the first or last page to see other PT-VX505NU / PT-VX505NE / PT-VX505NEA / PT-VW435NU / PT-VW435NE / PT-VW435NEA (serv.man2) service manuals if exist.