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 power cord is 
unplugged.----
Red
LightingOff
The power cord is 
plugged.----
The projector is in 
standby mode after the 
cooling is completed.
----
LightingLighting in redThe replacement time of the lamp unit is displayed. (Standby mode)
 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 time of the lamp unit and the projector is turned off automatically. 
 fThe indicator blinks when the usage time of the lamp unit reaches 6 600 hours (when [Lamp control] is set to  [  (Eco 1)]).
BlinkingOff
The projector inside is 
cooling down and after 
a while, the projector is 
turned off. (The projector 
will enter into the standby 
mode)
----
Power indicator 
Warning indicator  
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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 time of the lamp unit and the projector is turned off automatically.
 fThe indicator blinks when the usage time of the lamp unit reaches  6 600 hours (when [Lamp control] is set to  [  (Eco 1)]).
BlinkingOff
The power cord is plugged and the lamp is turned off. [Power management] is set to [Ready].
----
Orange
LightingOff
The projector detects an abnormal condition and cannot be turned on. (Warning)
--
 fIf the projector is turned off, unplug the AC power cord and contact the dealer.
LightingLightingThere is a problem in the contrast shutter circuit for iris. (Warning)
--
 fTurn off the projector,  unplug the AC power cord and contact the dealer.
BlinkingBlinking
The lamp or the power 
supply for the lamp 
detects an abnormal 
condition, the projector 
cannot be turned on. 
(Warning)
 fHave you turned on the power again immediately after turning it off?
 fWait a while until the luminous lamp cools off, and then turn on the power.
 fThere is a problem in the lamp circuit. Have the source voltage been changed? (Drop)  
 fTurn off the projector, and unplug the AC power cord, and consult your dealer.
BlinkingOff
Internal temperature is 
high. (Warning)
When the internal 
temperature rises further 
and the air filter warning 
icon  *1 
is displayed on the 
screen, after a while the 
projector can be turned off 
automatically.
 fIs the air intake/exhaust port blocked? fIs the room temperature high? fIs the air filter unit clogged?
 fRemove any objects that are blocking the air intake/ exhaust port. fInstall the projector in a location with an ambient temperature of 5 °C (41 °F) to 40 °C (104 °F). fDo not use the projector at high altitudes of  3 000 m (9 843’) or higher above sea level. fClean 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
 fIf the warning indicator  persists to light or blink after taking these measurements such as turn off the projector, 
unplug the power cord, please contact your dealer for repair services. 
 fIf the power indicator  persists to light or blink in orange after taking these measurements such as 
turn off the projector, unplug the power cord, please contact your dealer for repair services.\
 
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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 wiping. Dry off the projector with a dry cloth.
 fDo not use benzene, thinner, or rubbing alcohol, other solvents, household cleaners. Using them may cause deterioration of 
the outer case.
 fWhen using chemical treated dusters, follow its instruction.
Front glass surface of the lens
Wipe off the dirt and dust off the front surface of the lens with soft clean cloth.
 fDo not use a cloth that has an abrasive surface or a cloth that is moist\
, oily, or covered with dust.
 fDo not use excessive force when wiping the lens as it is fragile.
 fDo not use benzene, thinner or rubbing alcohol, other solvents or household cleaners. Using them may cause deterioration 
of the lens.
Attention
 fThe lens is made of glass. Impacts or excessive force when wiping may scratch its surface. 
Please handle with care.
Air filter unit
Perform maintenance of the air filter in the following cases.
 fIf the time which is set in [Expand] menu → [Filter counter] is elapsed, the filter warning icon  will be 
displayed. 
 fIf the air filter is clogged with dust, the power indicator  blinks in orange, or the filter warning icon 
 will be displayed and after a while the projector is turned off automatically.
Attention
 fMake sure to turn off the power before performing maintenance on the air filter unit.
 fMake sure that the projector is stable, and perform the maintenance in a\
 safe place where the unit will not be damaged even 
if you drop the air filter unit.
Removing the air filter unit
Air filter 
cover
Tabs
Fig.1
          
Fig.2
Hook Hook
Air filter cover
Air filter unit
1) Remove the air filter cover. (Fig.1)
 fPull out the air filter cover from the hook of the projector while slightly pushing upward the tabs of the air filter cover and open it in the direction of the arrow in figure.
2) Remove the air filter unit.
 fThe air filter unit is fixed by the three hooks. Grasp the fibre of the air filter unit near to the cover side with one hook and then pull the air filter unit out from the air filter cover as arrow direction shown. (Fig.2)
 fAfter removing the air filter unit, remove foreign objects and dust from the air filter compartment and the projector ’s air intake port if there are any.
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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 the air filter cover. 
Air filter unit
Inside (Smooth fibre)
Outside (Cotton-like fibre) Air filter cover
Red mark
 fInsert 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.
Hook Hook
Air filter cover
Air filter unit
Red mark
2) Attach the air filter cover to the projector.
 fPerform Step 1) in “Removing the air filter unit” (x page 94) in the reverse order.
 fMake 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  button on the control panel or on the remote control.
2) Press the  button to display the main menu, then press as to select [Expand].
3) Press the  button on the control panel or the  butto\
n on the remote control, 
then press as to select [Filter counter].
4) Press the  button on the control panel or the  butto\
n on the remote control, 
then press as to select [Filter counter reset].
5) Press the  button on the control panel or the  butto\
n on the remote control.
 fThe [Filter counter reset ?] confirmation message is displayed. 
6) Press as to select [Yes], then press the  button on the control panel or the 
 button on the remote control.
 fThe [OK?] screen is displayed.
7) Press as to select [Yes], then press the  button on the control panel or the 
 button on the remote control.
 fThe filter usage time is 0 after reset.
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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 appear on screen.
 fReplace 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.
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-LAL500), 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 inj\
uries.
Notes on the replacement of the lamp unit
 fA Phillips screwdriver is necessary when replacing the lamp unit. fSince the luminous lamp is made of glass, it may burst if dropped or hit\
 with a  hard object. Handle with care. fDo not disassemble or modify the lamp unit. fWhen replacing the lamp unit, be sure to hold it by the handle because its  surface is pointed and its shape is protruded. fThe lamp may rapture. Replace the lamp unit carefully so the glass fragm\
ents  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. fThe lamp contains mercury. When disposing of used lamp units, contact your  local authorities or dealer for correct methods of disposal.
Attention
 fPanasonic takes no responsibility for any damage or malfunction of the p\
roduct resulting from use of lamp units which are not manufactured by Panasonic. Use only specified lamp units.
Note
 fThe 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 (x page 73).
The estimated duration before replacement is 6 000 hours which is displayed in [Lamp counter], but the lamp may go of f 
before the time above mentioned has elapsed depending on individual lamp\
 characteristics, usage conditions, and the 
installation environment. It is recommended that the Replacement lamp un\
it be prepared earlier.
The time which is displayed in [Lamp counter] is a total time when the real usage time in [  (Normal)], [  (Eco 1)] or [  
(Eco 2)] is converted to the runtime in [ (Eco 1)]. Please note that they are not displayed individually.
The displayed time in [Lamp counter] = “Lamp runtime of [  (Normal)]” × 1.2 + “Lamp runtime of [  (Eco 1)]” 
+ “Lamp runtime of [  (Eco 2)]” × 0.6The real usage time when the displayed time in [Lamp counter] is 6 000 hours means, 
When [Lamp control] is constantly set to [  (Normal)] without switching to other modes = 5 000 hours 
When [Lamp control] is constantly set to [  (Eco 1)] without switching to other modes = 6 000 hours 
When [Lamp control] is constantly set to [  (Eco 2)] without switching to other modes = 10 000 hours
If you continue to use the lamp unit after the displayed time in [Lamp counter] 6 600 hours has elapsed, the lamp turns of f automatically at approximately 10 minutes after turning on the power, as it will cause malfunction of the projector.
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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 button within 10 
seconds, the icon disappears.
 fThe 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 6 600 hours
 fThe lamp replacement warning icon  is displayed for 10 seconds. If you press any button within 10 seconds, the icon disappears. fThe lamp replacement warning icon  will display for 4 seconds on the screen after switching the input source or turning on the projector. 
 fThe 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
 fThe lamp replacement icon or lamp replacement warning icon will not be displayed when during “Freeze” or “AV mute”.
 fThe usage period of 6 000 hours which is displayed in [Lamp counter] is a rough estimate and is not guaranteed.
Replacing the Lamp unit
Attention
 fWhen the projector is mounted on a ceiling, do not work with your face close to the projector.
 fDo not remove or loosen the screws other than specified ones when replacing the lamp unit.
 fMake sure to attach the lamp unit and the lamp cover securely. 
Lamp cover
Lamp cover 
fixing screw
AC IN Handles
Lamp 
unit fixing  screws
1) Turn off the power by following the procedure in “Powering Off the Projector” (x page 36). Remove 
the AC power plug from the wall outlet. 
 fWait at least 1 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.
 fRemove 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 proj\
ector.
5) Insert the new lamp unit in correct direction. Tighten the three lamp unit fixing screws (×3) securely 
with a Phillips screwdriver.
 fWhen 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.
6) Attach the lamp cover. Tighten the lamp cover fixing screw (×1) securely with a Phillips sc\
rewdriver.
 fPerform step 2) in reverse direction to attach the lamp cover.
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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 that the display of the [Lamp counter] is reset to [0 H].
 fPlease 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
 fMake sure to turn off the power before replacing the air filter unit.
 fMake 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. 
 fRefer to “Removing the air filter unit” (x page 94). 
2) Remove the air filter unit.
 fRefer to “Removing the air filter unit” (x page 94). 
3) Attach the optional Replacement Filter Unit (Model No.: ET -RFL300) to the air filter cover.
 fRefer to “Attaching the air filter unit” (x page 95).
4) Attach the air filter cover to the projector.
 fRefer to “Attaching the air filter unit” (x page 95).
5) Reset the filter counter.
 fRefer to “Resetting the filter counter” (x page 95).
Attention
 fWhen using the projector, be sure to attach the air filter unit. If it is not attached, the projector will suck in dirt and dust 
causing a malfunction.
 fThe air filter unit to be replaced should be an unused product.
Note
 fThe replacement cycle of the air filter unit varies greatly depending on the usage environment.
 fAfter replacing the air filter, reset the filter counter. Otherwise, the warning icon  will appear on screen.
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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.
—
—
—
92
97
No picture appears.
 fThe video signal input source may not be connected to a terminal properl\
y.
 fThe input selection setting may not be correct.
 fThe [Brightness] adjustment setting may be at the minimum setting.
 fThe input source which is connected to the projector may have a problem.\
 fThe AV mute function may be in use.
30
38, 48
52
—
40
The picture is fuzzy.
 fThe lens focus may not have been set correctly.
 fThe projector may not be at the correct distance from the screen.
 fThe lens may be dirty.
 fThe projector may be tilted too much.
372815—
The color is pale or grayish.
 f[Color] or [Tint] adjustment may be incorrect.
 fThe input source which is connected to the projector may not be adjusted\
 correctly.
 fRGB cable is damaged.
53
—
—
No sound from the internal speaker.
 fThe input terminals may not have been correctly connected.
 fThe volume may have been set to the minimum level.
 fThe AV mute function may have been turned on.
 fWhen the VARIABLE AUDIO OUT is plugged-in, the projector's built-in speaker is not available.
 fThe Mute function may have been turned on.
31
41, 57
40
30
41, 57
The remote control does not operate.
 fThe batteries may be weak.
 fThe batteries may not have been inserted correctly.
—24
 fThe remote control signal receptor on the projector may be obstructed.21
 fThe remote control unit may be out of the operation range.21
 fStrong light such as fluorescent shine onto the signal receptor.21
 fIs the operation of the remote control set to disabled in [Key lock] of the [Setting] menu?57
 fWhen different codes are set on the projector and on the remote control.42
The control buttons of the projector do not operate.
 fIs the operation of the control panel set to disabled in [Key lock] of the [Setting] menu?57
The picture does not display correctly.
 fThere may be a problem with the VCR or other signal source.
 fA signal which is not compatible with the projector is being input.
 fIs the setting of the computer output correct?
—
105
—
Picture from a computer does not appear.
 fThe cable may be longer than the optional cable.
 fThe external video output from a laptop computer may not be correct. 
—
—
Picture from a HDMI device does not appear or picture is not stable.
 fIs the HDMI cable securely connected?
 fTurn off the power of the projector and the connected devices. Then turn the power of the projector and the connected devices back on.
 fIsn't unsupported signal cable connected?
30 
—
105
No sound is output from a HDMI device.
 fSet the sound channel of the attached device to Linear PCM.—
 fConnect the computer to the  terminal through the HDMI-DVI conversion cable, set [Sound] of [HDMI Setup] to [Computer], and then input the  analog audio signal to the  terminal.   32, 58
The  mark appears 
on the screen.
 fTo inform that the projector cannot execute the operation. Check the connections 
and the input signals, then operate correctly.—
Attention
 fIf the problem persists, after confirming the contents of the table, please consult your dealer .
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Chapter 7   Appendix
This chapter describes specifications and after-sales service for the projector.