PT-TW342, PT-TX402, PT-TX312 (serv.man2) - Panasonic Projector Service Manual (repair manual). Page 9

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Power indicator  
<ON (G)/ 
STANDBY (R)>
Warning 
indicator  
<WARNING>
Status
Cause
Solution
Green
Lighting
Off
Projecting
--
--
Lighting
Lighting in red
The replacement time of 
the lamp unit is displayed. 
(Projecting)
 Is the lamp replacement 
warning icon 
 
displayed when turn on or turn 
off the projector?
 The indicator lights up when 
the usage time of the lamp unit 
reaches 6 000 hours (when 
[Lamp control] is set to
     [ 
 (Eco 1)]).
Replace the lamp unit.
Lighting
Blinking in red
It have exceed the 
replacement time of the lamp 
unit and the projector is turned 
off automatically. 
 The indicator blinks when the 
usage time of the lamp unit 
reaches 6 600 hours (when 
[Lamp control] is set to
     [ 
 (Eco 1)]).
Blinking
Off
The power cord is plugged 
and the lamp is turned off. 
[Power management] is set to 
[Ready].
--
--
Orange
Lighting
Off
The projector detects an 
abnormal condition and 
cannot be turned on. 
(Warning)
--
 If the projector is turned off,  
unplug the AC power cord 
and contact the dealer. 
Lighting
Lighting
There is a problem in the 
contrast shutter circuit for iris. 
(Warning)
--
Turn off the projector,
   unplug the AC power cord
   and contact the dealer.
Blinking
Blinking
The lamp or the power 
supply for the lamp detects 
an abnormal condition, the 
projector cannot be turned on. 
(Warning)
Have you turned on the power
   again immediately after turning 
   it off?
Wait a while until the 
   luminous lamp cools off, 
   and then turn on the power.
There is a problem in the lamp 
   circuit. Have the source voltage 
   been changed? (Drop)
Turn off the projector, and 
   unplug the AC power cord, 
   and consult your dealer.
Blinking
Off
Internal temperature is high. 
(Warning)
When the internal temperature 
rises further and the air filter 
warning icon 
*1
is displayed on the screen, 
after a while the projector can 
be turned off automatically.
 Is the air intake/exhaust port 
blocked?
 Is the room temperature high?
 Is the air filter unit clogged?
 Remove any objects that 
are blocking the air intake/ 
exhaust port.
 Install the projector in a 
location with an ambient 
temperature of 5 °C 
     (41 °F) to 40 °C (104 °F).
 Do not use the projector at 
high altitudes of 3 000 m 
(9 843') or higher above 
sea level.
 Clean the air filter unit or 
replace it. 
*1 Regardless of the time which is set in [Expand] → [Filter counter], the air filter warning icon 
 is displayed due to the 
     internal temperature rising, and it will be displayed 10 seconds every five minutes if the temperature does not go down.
Note
 
If the warning indicator <WARNING> persists to light or blink after taking these measurements such as turn off the projector,  
 
 unplug the power cord, please contact your dealer for repair services.
 
If the power indicator <ON(G)/STANDBY(R)> persists to light or blink in orange after taking these measurements such as turn  
 
 off the projector, unplug the power cord, please contact your dealer for repair services.
Circuit protections
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