PT-LW375, PT-LW335, PT-LB425, PT-LB385, PT-LB355, PT-LB305 (serv.man3) — Panasonic Projector Service Manual (repair manual). Page 14

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INF-4
SECTION 1 SERVICE INFORMATION
<LW375/LW335/LB425/LB385/LB355/LB305>
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.
  ● Vacuum dirt and dust from the air filter unit.
  ● Do not wash the air filter unit.
Attaching the air filter unit
1) Attach the unused air filter unit to the air filter cover.
  ● 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 mark on the air filter cover.
  ● Insert the air filter unit to the side with the two hooks and then press the other side of the air filter unit into the 
     cover side with one hook.
2) Attach the air filter cover to the projector.
  ● Perform Step 1) in “Removing the air filter unit” of the operating instructions in the reverse order.
  ● Make sure that the air filter cover is closed tightly.
Resetting the filter counter
Be sure to reset the filter counter after cleaning the air filter unit.
1)  Connect the power plug, press the power < v/b> button.
2)  Press the <MENU> button to display the main menu, then press 
as to select [Expand].
3)  Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control, then  
press as to select [Filter counter].
4)  Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control, then  
press as to select [Filter counter reset].
5)  Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control.
 
f
The [Filter counter reset ?] confirmation message is displayed. 
6)  Press as to select [Yes], then press the <INPUT/ENTER> button on the control panel or the <ENTER> button on 
the remote control.
 
f
The [OK?] screen is displayed.
7)  Press as to select [Yes], then press the <INPUT/ENTER> button on the control panel or the <ENTER> button on 
the remote control.
 
f
The filter counter is reset and the filter usage time becomes 0 hour. 
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.
Inside (Smooth fibre)
Outside (Cotton-like fibre)
Air filter cover
Air filter cover
Air filter unit
Red mark
Red mark
Hook
Hook
Air filter unit
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