Panasonic DLP Projector PT-DZ21K2 PT-DS20K2 PT-DW17K2 PT-DZ16K2 Operating Instructions

							Chapter 5 Maintenance — Maintenance/replacement
ENGLISH - 181
Maintenance/replacement
Before performing maintenance/replacement
 fMake sure to turn of f the power before maintaining or replacing the unit. ( x pages 58, 64)
 fWhen switching of

f the projector, make sure to follow the procedures in “Switching off the projector” 
(x
  page   64).
Maintenance
Outer case
Wipe off dirt and dust with a soft, dry cloth.
 fIf the dirt is persistent, soak the cloth with water and wring it thorou\
ghly before wiping. Dry of

f the projector with 
a dry cloth.
 f Do not use benzene, thinner

, or rubbing alcohol, other solvents, or household cleaners. Doing so may 
deteriorate the outer case.
 f When using chemically treated dust cloths, follow the instructions writt\
en on its packaging.
Lens front surface
Wipe off dirt and dust from the front surface of the lens with a soft clean clo\
th.
 fDo not use a cloth that is fluf

fy, dusty, or soaked with oil/water.
 fSince the lens is fragile, do not use excessive force when wiping the lens.
Attention
 f The lens is made of glass. Impacts or excessive force when wiping may scratch its surface. Handle with care.
Air filter unit
Perform maintenance of the air filter unit in the following cases.
 fThe air filter is clogged with dust, causing the filter replacement message to appear on the screen and the filter 
indicator  to light in red.
Attention
 f Make sure to turn of f 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 even if you drop it accidentally .
Removing the air filter unit
Air filter cover fixing screw
Air filter cover
Fig. 1 Tabs on the 
projector body
Tabs on the 
projector body
Air filter unit
Air filter unit compartment and the 
projector’s air intake port
Fig. 2 Fig. 3
1) Remove the air filter cover. (Fig. 1)
 fUse a Phillips screwdriver to turn the air filter cover screw counterclockwise until it turns freely , and then 
remove the air filter cover

.
 fLoosen the air filter cover fixing screw while putting your hand on.
2)

 
Pull out the air filter unit.
 fPull out the air filter unit frame from the tabs of the projector body while slightly pressing around the center 
of 

the frame at the front side (with the lens) inward as described with the arrow, and pull out the frame at the 
opposite side from the tabs to remove the air filter unit.  (Fig. 2)   
						

							Chapter 5 Maintenance — Maintenance/replacement
182 - ENGLISH
 fAfter pulling out the air filter unit, remove large foreign objects and dust from the air filter unit compartment 
and the air intake port of the projector body if there are any
. (Fig. 3)
Cleaning the air filter unit
Remove the air filter unit beforehand with the previously described procedure of “Removing the air filter unit”.
Fig. 1 Fig. 2
1) Wash the air filter unit. (Fig. 1)
i)  
Soak the air filter unit in cold or warm water and then lightly rinse it\
.
 fDo not use cleaning tools such as brushes.
 fWhen rinsing, hold the frame of the air filter unit without putting strong pressure on the filter unit.
ii)

 
Rinse the air filter unit two to three times using fresh water each time\
.
 fInsufficient rinsing may result in odors.
2)

 
Dry the air filter unit. (Fig. 2)
 fLet the air filter unit naturally dry of

f in a well-ventilated place where there is little dust and is not exposed to 
direct sunlight.
 f Do not dry using drying devices such as dryers.
 fAfter the air filter is dried, proceed to “Attaching the air filter unit” ( x

  page   182).
Attaching the air filter unit
Protrusion of the air filter unit Tabs on the projector body
Tabs on the projector body Groove on the projector body Protrusion of the air filter unit
Groove on the projector body
1) Attach the air filter unit to the projector .
 fThe air filter unit has no dif

ference between top and bottom, but is two-sided. Match the protrusion position 
of the air filter unit with the grooves on the projector body.
 f Hook the air filter unit frame at the air exhaust port side to the two tabs of the back side of the projector ’

s air 
filter unit compartment and perform Step  2) in “Removing the air filter unit” in the reverse order to attach.
 fConfirm that the tabs of the air filter unit compartment of the projector body are hooked to the air filter unit 
frame.
2)

 
Attach the air filter cover to the projector and use a Phillips screwdri\
ver to tighten the air filter cover 
screw

.
 fAttach the air filter cover by performing Step  1)

 in “Removing the air filter unit” (x
  page   181) in the reverse 
order.
Attention
 f After washing the air filter unit, dry it thoroughly before attaching it back to the projector .  Attaching a wet unit will cause an electric shock or 
malfunction.
 f Do not disassemble the air filter unit.
 fT

ake care not to touch the radiator fin when removing dirt or dust.    
						

							Chapter 5 Maintenance — Maintenance/replacement
ENGLISH - 183
Note
 fMake sure that the air filter unit is properly attached before using the projector . If it is not properly attached, the projector will suck in dirt and 
dust causing a malfunction.
 f If you use the projector without attaching the air filter unit, the filter indicator  blinks in red and the message appears on the 
projected image for approximately 30 seconds.
 f Replace the air filter unit with the new optional Replacement filter unit (Model No.: ET-

EMF510) if it is damaged or if the dirt does not come 
off even after washing.
 f Air filter replacement is recommended after cleaning the unit two times. fThe dust-proof properties may be reduced after each cleaning.
Replacing the unit
Lamp unit
The lamp unit is a consumable component. Refer to “When to replace the lamp unit” ( x   page   184) for details 
about the replacement cycle.
When purchasing the optional Replacement lamp unit (Model No.: ET
-

LAD520 (1   pc), ET
-
 LAD520F (4   pcs)) and 
the optional Replacement lamp unit (for portrait mode) (Model No.: ET
-

LAD520P (1   pc), ET
-
 LAD520PF (4   pcs)), 
consult your dealer.
It is recommended that you request a qualified technician to replace the lamp unit. Consult your dealer .
WARNING
Replace the lamp unit after the lamp has cooled (after waiting at least\
 one hour).
The high temperature inside the cover will cause burns.
Checking the lamp unit to be replaced
1)  
Check the status of the lamp indicators /// \
of the projector
 .
 fThe lamp unit corresponding to the lamp indicator that is lit in red is required to be replaced.
Notes on the replacement of the lamp unit
 f A

 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 i\
ts surface is pointed and its shape is 
protruded.
 fThe lamp may rapture. Replace the lamp unit carefully so that the glass \
fragments of the lamp do not scatter

. 
While attaching the projector to the ceiling, do not work right under th\
e lamp unit or do not conduct work while 
your face is near the lamp unit.
 f The lamp contains mercury

. When disposing of used lamp units, contact your local authorities or d\
ealer for 
correct methods of disposal.
Attention
 f Panasonic 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.
 fFor the portrait setting, be sure to use the Replacement lamp unit (for portrait mode). fDo not use the Replacement lamp unit (for portrait mode) and normal lamp unit together . fUse the Replacement lamp unit (for portrait mode) only when installing the projector in the portrait setting.
Note
 fThe model numbers of accessories and optional accessories are subject to\
 change without prior notice.   
						

							Chapter 5 Maintenance — Maintenance/replacement
184 - ENGLISH
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. The estimated duration before replacement is 3
  000 hours, but the lamp may go 
off before reaching 3
  000 hours, depending on the characteristics of the individual lamp, usage conditions, and the 
installation environment. It is recommended that the replacement lamp un\
it be prepared earlier.
If you continue to use the lamp unit after 3
  000 hours has elapsed, the lamp turns off automatically after 
approximately 10 minutes, as it may cause malfunction of the projector .
The projector will go into standby mode in approximately 10 minutes after the runtime of all four lamp units 
exceeds 3
  000 hours.
On-screen display
REPLACE LAMP
Lamp indicator 
Over 2 800 hours The message is displayed for 30 seconds. Pressing 
any button on the control panel or remote control 
within 30 seconds will clear the message.
The indicator lights in red even during the standby 
mode. (Only the corresponding lamp lights on.)
Over 3
  000 hours The message remains displayed until you press any 
button.
Note
 f
To predict when to replace the lamp, check the lamp runtime displayed in [LAMP1] to [LAMP4] of [STATUS] (x   page   137). fThe runtime of 3
  000 hours is a rough estimate and is not guaranteed.
 fThe estimated duration before replacing the Replacement lamp unit (for portrait mode) is 1

  000 hours. The on-screen message for replacing 
the lamp appears after 800 hours.
How to replace the lamp unit
Attention
 f When the projector is mounted on the ceiling, do not conduct work while \
your face is near the lamp unit. fDo not remove or loosen the screws other than specified ones when replacing the lamp unit. fUse the same type of lamp unit for all four lamps.
Note
 fWhen you replace the lamp unit with new one, the projector resets the ru\
ntime of the lamp unit automatically . fY
ou will feel a jam when removing or attaching the lamp case, but that is\
 because of the stopper for drop prevention and not a problem.   
						

							Chapter 5 Maintenance — Maintenance/replacement
ENGLISH - 185
Removing the lamp unit
WARNING
When replacing the lamp unit with the projector installed upward in the vertical direction, make sure to support the lamp unit 
cover with your hand while loosening the lamp unit cover fixing screw.
The lamp unit cover may open on its weight and may drop off, causing a serious accident or injury.
Lamp unit cover
Lamp unit cover fixing 
screw
Lamp unit fixing screw
Lamp unit Lamp case handle
Lamp unit handle
Guide pin and guide hole
Lamp unit
Lamp unit 1
Lamp unit 2
Lamp case R
Lamp case handle
Lamp case L Lamp unit 3
Lamp unit 4 Fig. 1
Fig. 4
Fig. 5 Fig. 2
Fig. 3 Lamp case R
Lamp case L
Lamp case fixing screw
Lamp case handle
Lamp unit handle
1) Set the  switch to  and disconnect the power plug from \
the power outlet.
 fW

ait at least one hour and check if the lamp unit has cooled down.
2)
 
Remove the lamp unit cover
 . (Fig. 1)
i)
 
Use a Phillips screwdriver to turn the lamp unit cover fixing screw (x1) counterclockwise until it turns freely , 
and open the lamp unit cover slowly in the direction of the arrow

.
 fOpening the lamp unit cover quickly may result in damage to the cover .   
						

							Chapter 5 Maintenance — Maintenance/replacement
186 - ENGLISH
 fIf you loosen the lamp unit cover fixing screw with the projector installed upward in the vertical direction, the 
lamp unit cover may open on its weight and may drop of
f. Support the lamp unit cover with your hand when 
you loosen the lamp unit cover fixing screw.
ii)
 
Hold the lamp unit cover securely and slide it in the direction of the arrow , and then remove it by pulling it out 
backwards.
 f Since the fan and other components are attached to the lamp unit cover

, handle the removed lamp unit 
cover with care.
3)
 
Pull out the lamp case.
i)

 
Use a Phillips screwdriver to turn the lamp case fixing screws (x2 each) on the side where the lamp unit to be 
replaced has been attached counterclockwise until they turn freely . (Fig. 2)
 fDo not remove the black screws other than the lamp case fixing screws.
 fIf you loosen the lamp case fixing screws with the projector installed upward in the vertical direction, the 
lamp case may drop of

f on its weight. Take extra care by holding the lamp case handle when loosening the 
lamp case fixing screws.
ii)
 
Hold the handle of the lamp case on the side where the lamp unit to be replaced has been attached and pull 
out the lamp case backwards. (Fig. 3)
 f When pulling out the lamp case, make sure that the projector is stable, \
and perform the replacement in a 
safe place even if you drop it accidentally

.
4)
 
Remove the lamp unit. (Fig. 4, Fig. 5)
i)

 
Use a Phillips screwdriver to turn the lamp unit fixing screws (x2) counterclockwise until they turn freely , and 
then remove the lamp unit from the lamp case.
 f Hold the handles of the lamp unit and remove it straight.
 fDo not remove screws other than the lamp unit fixing screws.
Attaching the lamp unit
(a)
(b)
i) ii)
Lamp case R
Lamp case L
Lamp case fixing screw
Lamp case handle Groove for the guide to attach the lamp case
Fan power connector
Guide to attach the lamp case
Fig. 1 Fig. 2
1) Attach the lamp unit.
 fSlowly insert a new lamp unit into the lamp case. 

Attach the lamp unit so that the guide pins fit into the 
guide holes of the lamp unit.
 f If you are having difficulty attaching the lamp unit, remove it first and then push it in again slowly . Pushing it 
in quickly or forcibly may break the connector

.
2)
 
Use a Phillips screwdriver to firmly tighten the lamp unit fixing screws\
 (x2 each).
 fMake sure to attach the lamp unit securely

.   
						

							Chapter 5 Maintenance — Maintenance/replacement
ENGLISH - 187
3) Attach the lamp case. (Fig. 1)
 fSlowly insert the lamp case into the projector along the grooves for the\
 guide to attach the lamp case, then 
firmly tighten the lamp case fixing screws (x2).
 fIf the projector is installed upward in the vertical direction, the lamp\
 case may drop of

f on its weight when 
fixing it. Take extra care by holding the lamp case handle when tightening the lamp case fixing screws.
 f If you are having difficulty attaching the lamp case, remove it first and then push it in again slowly . Pushing 
it in quickly or forcibly may break the connector

.
 fMake sure to attach the lamp case securely

.
4)
 
Attach the lamp unit cover
 . (Fig. 2)
i)
 
Align the mark (a) with the mark (b) ( E

 and A) and attach the lamp unit cover as shown by the arrow.
ii)
 
Slide the lamp unit cover as shown by the arrow to fit it in the project\
or
 .
 fAttach the lamp unit cover so that the connector on the lamp unit cover is inserted to the fan power 
connector securely

.
iii)
 
Use a Phillips screwdriver to firmly tighten the lamp unit cover fixing screw (x1).
 fMake sure to attach the lamp unit cover securely

.
Air filter unit
If dirt does not come off even after the unit is maintained, it is time for the unit to be repla\
ced.
The Replacement filter unit (Model No.: ET
-
EMF510) is an optional accessory. To purchase the product, consult 
your dealer.
Replacing the air filter unit
Attention
 f Make sure to turn of f the power before replacing the air filter unit. fWhen attaching the unit, make sure that the projector is stable, and per\
form the replacement in a safe place even if you drop it accidentally .
1) Remove the air filter unit.
 fRefer to “Removing the air filter unit” ( x

  page   181).
2)
 
Attach the optional Replacement filter unit (Model No.: ET-
 EMF510) to the projector.
 fThe air filter unit has no dif

ference between top and bottom, but is two-sided. Match the protrusion position 
of the air filter unit with the grooves on the projector body.
 f Refer to “Attaching the air filter unit” (

x   page   182).
Attention
 f When switching on the projector , make sure that the air filter unit is attached. If it is not properly attached, the projector will suck in dirt and 
dust causing a malfunction.
 f If you use the projector without attaching the air filter unit, the filter indicator  blinks in red and the message appears on the 
projected image for approximately 30 seconds.
Note
 f The replacement cycle of the air filter unit varies greatly depending on the usage environment.   
						

							Chapter 5 Maintenance — Troubleshooting
188 - ENGLISH
Troubleshooting
Review the following points. For details, see the corresponding pages.
ProblemsPoints to be checked Page
Power does not turn on.
 f Is the power plug firmly inserted into the outlet? ―
 fIs the  switch set to ? 64
 fIs the wall outlet supplying electricity? ―
 fHave the circuit breakers tripped? ―
 fAre the lamp indicators /// or the 
temperature indicator  lit or blinking? 179
 f
Is the lamp unit and the lamp unit cover attached securely? 184
 fIs the power supply voltage proper (AC 200

  V - 240   V)?215
No image appears.
 f Are connections to external devices correctly performed? 52
 fIs the input selection setting correct? 71
 fIs the [BRIGHTNESS] adjustment setting at a minimum? 84
 fIs the external device that is connected to the projector working properly? ―
 fIs the shutter function in use? 72
 fIf the power indicator  is blinking in red, consult your dealer. ―
 fIs the lens cover still attached to the lens? 59
Image is fuzzy

.
 fIs the lens focus set correctly? 65
 fIs the projection distance appropriate? 34
 fIs the lens dirty? 22
 fIs the projector installed perpendicular to the screen? ―
Color is pale or grayish.
 f Are [COLOR] and [TINT] adjusted correctly? 84
 fIs the external device connected to the projector adjusted correctly? 52
 fIs the RGB cable damaged? ―
Remote control does not 
respond.
 f Are the batteries depleted? ―
 fIs the polarity of the batteries set correctly? 30
 fAre there any obstructions between the remote control and the remote control 
signal receiver of the projector? 25
 f
Is the remote control being used beyond its ef

fective operation range?26
 fAre other forms of light, such as fluorescent light, af

fecting the projection?26
 fIs the [REMOTE CONTROL] setting in [CONTROL

 DEVICE SETUP] set to 
[DISABLE]? 151
 f
Is the  terminal used for contact control? 206
 fIs the ID number setting operation correct? 75
Menu screen does not 
appear

.
 f Is the on-screen display function turned of

f (hidden)?11 9
Buttons on the control 
panel do not operate.
 f Is the [CONTROL

 PANEL] setting in [CONTROL DEVICE SETUP] set to 
[DISABLE]? 151
 f
Is the  terminal used for contact control? 206
Image does not display 
correctly

.
 f Is the [SYSTEM SELECT

OR] selection set correctly? 89
 fIs the [RGB1 INPUT

 SETTING] setting made correctly? 11 3
 fIs there a problem with the video tape or other image sources? ―
 fIs a signal which is not compatible with the projector being input? 209
Image from a computer 
does not appear

.
 fIs the cable too long? (For D

- Sub cables, the cable length should be 10   m (32'10") 
or shorter.) ―
 f
Is the external video output on the laptop computer set correctly? (Ex.:  The external 
output settings may be switched by pressing the “Fn” + “F3” or “Fn” + “F10” 
simultaneously

. Since the method varies depending on the computer type, refer to 
the user manual provided with your computer.) ―
Image output from DVI
- D 
of the computer does not 
appear.
 f Is the [EDID SELECT] setting in [DVI-D IN] set to [EDID3] or [EDID2:PC]? 11

4
 fThe graphics accelerator driver of the computer may need to be updated t\
o the 
latest version. ―
 f
The condition may be improved by making the [EDID SELECT] setting in [DVI-D IN] 
and then restarting the computer

. 11 4
Video from HDMI 
compatible device does 
not appear or it appears 
jumbled.
 f Is the HDMI cable connected securely? 52
 fT

urn the power of the projector and the external device off and on. ―
 fIs a signal which is not compatible with the projector being input? 209   
						

							Chapter 5 Maintenance — Troubleshooting
ENGLISH - 189
ProblemsPoints to be checked Page
Lens shift cannot be 
adjusted.
 f Perform [LENS CALIBRA

TION]. 140
 fIs the fixed-focus lens (Model No.: ET-

D75LE50) attached?―
Cannot control the 
projector with Art-Net.
 f Are the connections between the twisted-pair-cable transmitter and an external 
device, and between the twisted-pair-cable transmitter and projector correctly done? ―
 f
Is [Art-Net SETUP] set to other than [OFF]? 157
 fAre [NET], [SUB NET], [UNIVERSE], and [ST

ART ADDRESS] set correctly?157
The DIGITAL LINK input 
image is not displayed.
 f Are the connections between the twisted-pair-cable transmitter and the projector or 
an external device correctly done? ―
 f
Is [DIGIT

AL LINK MODE] set to [AUTO] or [DIGITAL LINK]? Is it set to 
[ETHERNET]? 154
 f
Is a signal which is not compatible with a twisted-pair-cable transmitter being input? ―
3D function is not working.
 f Is the [3D INPUT

 FORMAT] setting of [3D SETTINGS] correct? 104
 fCheck the 3D eyewear settings. ―
 fIs a signal which is supported by the projector being input? 212
Left and right images are 
reversed (not showing 
properly).
 f Is it synchronized? Check the 3D eyewear settings. ―
 fChange the [LEFT/RIGHT

 SWAP] setting of [3D SETTINGS]. 104
Image in the 3D eyewear 
flickers.
 f Are you within the reception range? ―
3D eyewear is not 
functioning.
 f Is the battery for 3D eyewear dead? Charge the battery for the rechargeable 3D 
eyewear

. Change the battery for the battery type. ―
 f
Is the [3D SETTINGS] setting correct? 103
Attention
 fIf problems persist even after checking the preceding points, consult yo\
ur dealer .   
						

							Chapter 5 Maintenance — Self-diagnosis display
190 - ENGLISH
Self-diagnosis display
There is a self-diagnosis display on the side of the projector. Self-diagnosis display will automatically display the 
value of the input supply voltage, or details of errors or warnings when they occur. (x
  page   28)
The following list shows the alphanumeric symbol that is displayed when \
an error or a warning has occurred and 
its details. The input supply voltage is displayed only with the numeric value.
Error/warning display Details Measure
U04 Air filter clogging
 fClean the air filter unit.
U

11 Intake temperature warning
 fThe operating environment temperature is too 
high. Use the projector in an appropriate operating 
environment temperature
*1.
U12
Optical module temperature warning
U13 Exhaust air temperature warning
 fThe operating environment temperature is too 
high, or the air exhaust port may be blocked. 
Use the projector in an appropriate operating 
environment temperature
*1. Or remove any objects 
that are blocking the air exhaust port.
U14 Low temperature warning
 fThe operating environment temperature is too 
low

. Use the projector in an appropriate operating 
environment temperature
*1.
U21 Intake temperature error
 fThe operating environment temperature is too 
high. Use the projector in an appropriate operating 
environment temperature
*1.
U22
Optical module temperature error
U23 Exhaust air temperature error
 fThe operating environment temperature is too 
high, or the air exhaust port may be blocked. 
Use the projector in an appropriate operating 
environment temperature
*1. Or remove any objects 
that are blocking the air exhaust port.
U24 Low temperature error
 fThe operating environment temperature is too 
low

. Use the projector in an appropriate operating 
environment temperature
*1.
U30 Installation angle error
 fUse the projector at an angle not exceeding ±15° 
from the horizontal plane.
U31 Portrait installation angle error
 fInstall the projector with the connecting terminals 
down.
U32 Used lamp unit error
 fT

o install in portrait, use the Replacement lamp unit 
(for portrait mode).
U33 Used lamp unit mix-up error
 fA

 different type of lamp unit is attached. Check the 
model number displayed on the lamp unit and use 
a lamp unit with the same model number.
U35
*2Non-compatible lamp warning f The lamp unit for portrait mode is attached. 
Replace the lamp unit with one compatible with the 
projector
.
U41 Lamp 1 runtime warning
 fIt will reach the lamp replacement time. Replace 
the lamp unit.
U42
Lamp 2 runtime warning
U43 Lamp 3 runtime warning
U44 Lamp 4 runtime warning
U51 Lamp 1 error
 fFailed to light the lamp. 

Turn on the power again 
after the lamp is cooled. If the lamp still does not 
light, consult your dealer.
U52
Lamp 2 error
U53 Lamp 3 error
U54 Lamp 4 error
U61 Lamp 1 runtime has exceeded 3
  000 hours
*3
 fIt has reached the lamp replacement time. Replace 
the lamp unit.
U62
Lamp 2 runtime has exceeded 3
 
000 hours*3
U63
Lamp 3 runtime has exceeded 3   000 hours*3
U64Lamp 4 runtime has exceeded 3   000 hours*3
U71Lamp 1 not installed
 fAttach the lamp unit.
U72
Lamp 2 not installed
U73 Lamp 3 not installed
U74 Lamp 4 not installed
U76 Air filter unit not installed
 fAttach the air filter unit.
U78 Clog sensor error
 fClean or replace the air filter unit. ( x

  page   181)
U81 Low AC voltage warning (below 170
  V)
 fThe input supply voltage is low

. Use electric 
wiring that can sufficiently withstand the power 
consumption of the projector.