PT-TW371R (serv.man3) - Panasonic Projector Service Manual (repair manual). Page 25

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INF-15
SECTION 1 SERVICE INFORMATION
<TW371R>
Power indicator 
<ON(G)/STANDBY(R)> 
Warning  
indicator
<WARNING> 
Status
Cause
Solution
Green
Blinking
Off
The power cord is plugged 
and the lamp is turned off. 
(Ready state)
 
f
[Power management] is set to [Ready].  
If a video signal is input in Ready mode, or when you 
press any button other than the power  
<v/b> button, the luminous lamp turns on and the 
projector enters the projection state. Pressing the 
power <v/b> button during the Ready state will enter 
the standby state. 
Orange
Lighting
Off
The projector detects an 
abnormal condition and 
cannot be turned on. 
(Warning)
--
 
f
If the projector is turned 
off, unplug the AC 
power cord and repair 
it.
Lighting
Lighting
There is a problem in the 
contrast shutter circuit for 
iris. (Warning)
--
 
f
Turn off the projector, 
unplug the AC power 
cord and repair it.
Blinking
Blinking
The lamp or the power 
supply for the lamp detects 
an abnormal condition, the 
projector cannot be turned 
on. (Warning)
 
f
Have you turned on the 
power again immediately 
after turning it off?
 
f
Wait a while until the 
luminous lamp cools 
off, and then turn on the 
power.
 
f
There is a problem in 
the lamp circuit. Have 
the source voltage been 
changed? (Drop)  
 
f
Turn off the projec-
tor, and unplug the AC 
power cord, and repair 
it.
Blinking
Off
Internal temperature is 
high. (Warning)
When the internal tem-
perature rises further and 
the air filter warning icon 
 *1 
is displayed on the screen, 
after a while the projector 
can be turned off automati-
cally.
 
f
Is the air intake/exhaust 
port blocked?
 
f
Is the room temperature 
high?
 
f
Is the air filter unit 
clogged?
 
f
Remove any objects 
that are blocking the air 
intake/ exhaust port.
 
f
Install the projector in a 
location with an ambient 
temperature of 5 °C (41 
°F) to 40 °C (104 °F).
 
f
Do not use the projector 
at high altitudes of  
2 700 m (8 858') or 
higher above sea level.
 
f
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
 
f
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 repair it. 
 
f
If the power indicator <ON(G)/STANDBY(R)> persists to light or blink in orange after taking these measurements such as turn off the pro-
jector, unplug the power cord, please repair it. 
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