Panasonic LCD Projector Pt Tw343 Operating Instructions

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Chapter 6   Maintenance
This chapter describes methods of inspection when there are problems, ma\
intenance, and 
replacement of the units.  

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Power/Warning Indicators
When an indicator lights up
If a problem should occur inside the projector, the power indicator  and the warning indicator 
 will inform you by lighting or blinking. Check the status of the indicators and remedy the indicated problems as 
follows.
Attention
 fBefore you take a remedial measure, follow the procedure of switching the power off indicated in “Powering Off the 
Projector” (x page 36).
Power indicator 
 
Warning  
indicator
 
StatusCauseSolution
OffOffThe...

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Power indicator 
 
Warning  
indicator
 
StatusCauseSolution
Green
LightingOffProjecting.----
LightingLighting in redThe replacement time of the lamp unit is displayed. (Projecting)
 fIs the lamp 
replacement warning 
icon  
displayed when turn 
on or turn off the 
projector?
 fThe indicator lights 
up when the usage 
time of the lamp unit 
reaches  
6 000 hours (when 
[Lamp control] is set to  
[  (Eco 1)]).
 fReplace the lamp unit.
LightingBlinking in red
It has exceed the replace-ment...

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Maintenance/replacement
Before performing maintenance/replacement
 fWhen you perform maintenance or replacement of the parts, make sure to turn off the power and disconnect the power plug 
from the wall outlet. (x page 36)
 fBe sure to observe the procedure “Powering Off the Projector” (x page 36) when performing power supply operation.
Maintenance
Outer Case
Wipe off dirt and dust using a soft dry cloth.
 fIf the dirt is persistent, soak the cloth with water and wring it thorou\
ghly before...

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Cleaning the air filter unit
Remove the air filter unit beforehand according to the previously described procedure in “Removing the air filter unit”.
1) Clean the air filter unit.
 fVacuum dirt and dust from the air filter unit.
 fDo not wash the air filter unit.
Attaching the air filter unit
1) Attach the new air filter unit to the air filter cover.
 fThere is a distinction between the inside and outside of the air filter unit. Align the red mark on the air filter unit with the red mark on...

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Attention
 fDo not disassemble the air filter unit.
 fWhen attaching the air filter unit, make sure that the projector is stable, and work in an environment that is safe, even in the 
event of the air filter unit dropping.
 fMake sure that the air filter unit is properly attached before using the projector. If it is not attached, the projector will suck in 
dirt and dust causing a malfunction.
Note
 fAfter cleaning the air filter, reset the filter counter. Otherwise, the warning icon  will...

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The displayed time in [Lamp counter]
On-screen display indicator
Over 5 700 hours 
less than 6 000 
hours 
 fThe lamp replacement icon  is displayed for 10 
seconds. If you press any button within 10 seconds, the 
icon disappears.
 fThe lamp replacement icon  will display for 4 seconds 
on the screen after switching the input source or turning on 
the projector.
--
Over 6 000 hours 
less than 6 600 
hours 
 fThe lamp replacement warning icon  is 
displayed for 10 seconds. If you press any...

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Resetting the lamp counter
Be sure to reset the lamp counter after replacing the lamp unit.
1) Connect the power plug, press the power  button on the control panel or on the remote control.
2) While pressing the ▲ button on the control panel, press and hold the  button on the 
control panel for eight seconds or more.
 fThe lamp counter will be reset to 0. (At this time, there is displaying nothing.)
3) Press the  button on the remote control.
 fThe [Info.] screen is displayed.
 fTo make sure...

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Troubleshooting
Please check following points. For details, see the corresponding pages.
ProblemCauseReference 
page
Power does not turn on.
 fThe power cord may not be connected.
 fNo electric supply is at the wall outlet.
 fThe circuit breakers have tripped.
 fIs the power indicator  or the warning indicator 
 indicator lit or blinking?
 fThe lamp cover has not been securely installed.
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—
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No picture appears.
 fThe video signal input source may not be connected to a terminal...

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Chapter 7   Appendix
This chapter describes specifications and after-sales service for the projector.