Panasonic PT-TW370 / PT-TX430 / PT-TX340 Service Manual ▷ View online
INF-4
SECTION 1 SERVICE INFORMATION
<TW370/TX430/TX340>
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.
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Vacuum dirt and dust from the air filter unit.
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Do not wash the air filter unit.
Attaching the air filter unit
1) Attach the unused air filter unit to the air filter cover.
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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.
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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.
with one hook.
2) Attach the air filter cover to the projector.
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Perform Step
1) in “Removing the air filter unit” of the operating Instructions in the reverse order.
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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 to select [Expand].
3) Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control, then
press to select [Filter counter].
4) Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control, then
press to select [Filter counter reset].
5) Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control.
2) Press the <MENU> button to display the main menu, then press to select [Expand].
3) Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control, then
press to select [Filter counter].
4) Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control, then
press to select [Filter counter reset].
5) Press the <INPUT/ENTER> button on the control panel or the <ENTER> button on the remote control.
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The [Filter counter reset ?] confirmation message is displayed.
6) Press to select [Yes], then press the <INPUT/ENTER> button on the control panel or the <ENTER> button
on the remote control.
on the remote control.
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The [
OK?] screen is displayed.
7) Press to select [Yes], then press the <INPUT/ENTER> button on the control panel or the <ENTER> button
on the remote control.
on the remote control.
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The filter counter is reset and the filter usage time becomes 0 hour.
Attention
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Do not disassemble the air filter unit.
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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.
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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
INF-5
SECTION 1 SERVICE INFORMATION
<TW370/TX430/TX340>
Note
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After cleaning the air filter, reset the filter counter. Otherwise, the actual filter usage time cannot be confirmed.
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Replace the air filter unit with the new optional Replacement Filter Unit (Model No.: ET-RFL300) if it is damaged or if the dirt
does not come off even after cleaning.
2. 2. Replacing the Unit
Lamp unit
The lamp unit is a consumable component. Refer to “When to replace the lamp unit” for details about the replacement cycle.
When purchasing the optional Replacement Lamp Unit (Model No.: ET-LAL510), consult your dealer.
Warning
Do not replace the lamp unit when it is hot. (Wait at least one hour after use).
The inside of the cover can become very hot, take care to avoid burn injuries.
Notes on the replacement of the lamp unit
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A Philips screwdriver is necessary when replacing the lamp unit.
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Since the luminous lamp is made of glass, it may burst if it drops or hit with a hard object.
Handle with care.
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Do not disassemble or modify the lamp unit.
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When replacing the lamp unit, be sure to hold it by the handle because its surface is pointed
and its shape is protruded.
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The lamp may rapture. Replace the lamp unit carefully so the glass fragments of the lamp do
not scatter. While attaching the projector to the ceiling, do not work right under the lamp unit
or do not conduct work while your face is near the lamp unit.
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The lamp contains mercury. When disposing of used lamp units, contact your local authori-
ties or dealer for correct methods of disposal.
Attention
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Panasonic takes no responsibility for any damage or malfunction of the product resulting from use of lamp units which are not
manufactured by Panasonic. Use only specified lamp units.
Note
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The model numbers of accessories and optional accessories are subject to change without prior notice.
When to replace the lamp unit
The lamp unit is a consumable component. Since its brightness gradually decreases over time, it is necessary to replace the
lamp unit regularly.
Please refer to the displayed time in [Lamp counter] of [Info.] about the usage time of lamp.
The estimated duration before replacement is 20 000 hours which is displayed in [Lamp counter], but the lamp may go off be-
fore the time above mentioned has elapsed depending on individual lamp characteristics, usage conditions, and the installation
environment. It is recommended that the Replacement lamp unit be prepared earlier.
The time which is displayed in [Lamp counter] is a total time when the real usage time in [ (Normal)], [ (Eco)] or [ (Quiet)]
is converted to the runtime in [ (Eco)]. Please note that they are not displayed individually.
The displayed time in [Lamp counter] = “Lamp runtime of [ (Normal)]” × 2 + “Lamp runtime of [ (Eco)]”
+ “Lamp runtime of [ (Quiet)]” × 2
The real usage time when the displayed time in [Lamp counter] is 20 000 hours means,
When [Lamp control] is constantly set to [ (Normal)] without switching to other modes = 10 000 hours
When [Lamp control] is constantly set to [ (Eco)] without switching to other modes = 20 000 hours
When [Lamp control] is constantly set to [ (Quiet)] without switching to other modes = 10 000 hours
If you continue to use the lamp unit after the displayed time in [Lamp counter] 22 000 hours has elapsed, the lamp turns off
automatically at approximately 10 minutes after turning on the power, as it will cause malfunction of the projector.
INF-6
SECTION 1 SERVICE INFORMATION
<TW370/TX430/TX340>
The displayed time in
[Lamp counter]
On-screen display
<WARNING> indicator
Over 19 700 hours less than
20 000 hours
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The lamp replacement icon
is displayed for 10
seconds. If you press any button within 10 seconds, the
icon disappears.
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The lamp replacement icon
will display for 4 seconds
on the screen after switching the input source or turning
on the projector.
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Over 20 000 hours less than
22 000 hours
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The lamp replacement warning icon
is
displayed for 10 seconds. If you press any button within
10 seconds, the icon disappears.
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The lamp replacement warning icon
will
display for 4 seconds on the screen after switching the
input source or turning on the projector.
Lighting in red. (The indicator will
not light in the standby mode)
Over 22 000 hours
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The lamp replacement warning icon
is
displayed for 10 seconds. If you press any button within
10 seconds, the icon disappears.
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The lamp replacement warning icon
will
display for 4 seconds on the screen after switching the
input source or turning on the projector.
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The lamp automatically turns off at approximately 10
minutes after turning on the power.
Blinking in red. (The indicator will
not light in the standby mode)
Note
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The lamp replacement icon or lamp replacement warning icon will not be displayed when during “Freeze” or “AV mute”.
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The usage period of 20 000 hours which is displayed in [Lamp counter] is a rough estimate and is not guaranteed.
Replacing the Lamp unit
Attention
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When the projector is mounted on a ceiling, do not work with your face close to the projector.
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Do not remove or loosen the screws other than specified ones when replacing the lamp unit.
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Make sure to attach the lamp unit and the lamp cover securely.
1) Turn off the power by the procedure in "Powering Off the Projector" of Operating Instructions.
Remove the AC power plug from the wall outlet.
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Wait at least one hour and make sure the lamp unit and surroundings are cool.
2) Use a Phillips screwdriver to loosen the lamp cover fixing screw (×1) until it turns freely and remove
the lamp cover.
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Remove the lamp cover by pulling it slowly toward the direction of the arrow as the above figure shown.
3) Use a Phillips screwdriver to loosen the three lamp unit fixing screws (×3) until they turn freely.
4) Hold the used lamp unit by its handles, and pull it gently from the projector.
5) Insert the new lamp unit in correct direction. Tighten the three lamp unit fixing screws (×3) securely
with a Phillips screwdriver.
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When you experience difficulty in installing the lamp unit, remove it and try again. If you use force to install the lamp unit,
the connector may be damaged.
Lamp cover
Lamp cover
fixing screw
fixing screw
Handles
Lamp unit
fixing screws
fixing screws
AC IN
INF-7
SECTION 1 SERVICE INFORMATION
<TW370/TX430/TX340>
6) Attach the lamp cover. Tighten the lamp cover fixing screw (×1) securely with a Phillips screwdriver.
Perform step 2) in reverse direction to attach the lamp cover.
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.
2) While pressing the button on the control panel, press and hold the <INPUT/ENTER> button on the control
panel for eight seconds or more.
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The lamp counter is reset and the usage time of the luminous lamp becomes 0 hour. (At this time, there is displaying
nothing.)
3) Press the <INFO.> button on the remote control.
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The [
Info.] screen is displayed.
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Make sure that the display of the [Lamp counter] is [0 H].
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Please try step
2) again if the lamp counter has not been reset.
Air filter unit
When the dust remains after cleaning, the filter replacement timing has come.
The Replacement Filter Unit (Model No.: ET-RFL300) is an optional accessory. To purchase the product, consult your dealer.
Replacing the air filter unit
Attention
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Make sure to turn off the power before replacing the air filter unit.
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Make sure that the projector is stable, and perform the replacement in a safe place where the unit will not be damaged even if
you drop the air filter unit.
1) Remove the air filter cover.
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Refer to “Removing the air filter unit” of item in the Operating Instructions.
2) Remove the air filter unit.
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Refer to “Removing the air filter unit” of item in the Operating Instructions.
3) Attach the optional Replacement Filter Unit (Model No.: ET-RFL300) to the air filter cover.
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Refer to “Attaching the air filter unit” of item in the Operating Instructions.
4) Attach the air filter cover to the projector.
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Refer to “Attaching the air filter unit” of item in the Operating Instructions.
5) Reset the filter counter.
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Refer to “Resetting the filter counter” of item in the Operating Instructions.
Attention
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When using the projector, be sure to attach the air filter unit. If it is not attached, the projector will suck in dirt and dust caus-
ing a malfunction.
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The air filter unit to be replaced should be an unused product.
Note
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The time until the air filter is clogged varies greatly depending on the usage environment.
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When the projector is used without resetting the filter counter, the actual filter usage time cannot be confirmed.
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