Panasonic LCD Projector Pt Tw342 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
 
f Before you take a remedial measure, follow the procedure of switching the power of f indicated in “Powering Off the 
Projector” (x page 36).
Power indicator 
  Warning 
 
indicator
  Status
CauseSolution
Off...

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Power indicator 
  Warning 
 
indicator
  Status
CauseSolution
GreenLighting
OffProjecting. ----
Lighting Lighting in red The replacement time of 
the lamp unit is displayed. 
(Projecting)  
f Is the lamp 
replacement warning 
icon 
 
displayed when turn 
on or turn off the 
projector?
 
f The indicator lights up 
when the usage time of 
the lamp unit reaches   
6 000 hours (when 
[Lamp control] is set to   
[ 
 (Eco 1)]).  
f Replace the lamp 
unit.
Lighting Blinking in red It has exceed...

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Maintenance/replacement
Before performing maintenance/replacement
 
f When you perform maintenance or replacement of the parts, make sure to turn of f the power and disconnect the power plug 
from the wall outlet. (x page 36)
 
f Be 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.
 
f If the dirt is persistent, soak the cloth with water and wring it thorou\
ghly...

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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.
 
f Vacuum dirt and dust from the air filter unit.
 
f Do not wash the air filter unit.
Attaching the air filter unit
1)  Attach the new air filter unit to the air filter cover.
 
f There 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...

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Attention
 
f Do not disassemble the air filter unit.
 
f When 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.
 
f Make 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
 
f After cleaning the air filter, reset the filter counter. Otherwise, the warning...

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The displayed time in [Lamp  counter] On-screen display
 indicator
Over 5 700 hours  less than 6 000  hours   
f The lamp replacement icon 
 is displayed for 10 
seconds. If you press any button within 10 seconds, the 
icon disappears.
 
f The 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   
f The lamp replacement warning icon 
 is 
displayed for 10 seconds. If you...

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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 < v/b> 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.
 
f The lamp counter will be reset to 0. (At this time, there is displaying nothing.)
3)  Press the  button on the remote control.
 
f The [Info.] screen is displayed....

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

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