Panasonic LCD Projector PT-LX26HE Operating Instructions

							Replacement
ENGLISH - 61
Maintenance
 JLamp unit
The lamp unit is a consumable component. You can check the total usage time using Lamp runtime in the 
[Information] menu on page 57.
It is recommended to ask an authorized engineer to replace the lamp unit. Contact your dealer.
Consult your dealer to purchase a replacement lamp unit (ET-LAL100).
CAUTION:
■ Do not replace the lamp unit when it is hot. (Wait at least 45 minutes 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 J
The luminous source of the lamp is made of glass and may  z
burst if you hit it against a hard surface or drop it. 
Please handle with care.
A Phillips screwdriver is required for replacement of the  z
lamp unit.
When replacing the lamp unit, be sure to hold it by the  z
handle.
When replacing the lamp because it has stopped  z
illuminating, there is a possibility that the lamp may be 
broken.
If replacing the lamp of a projector which has been installed  z
on the ceiling, you should always assume that the lamp is broken, and yo\
u should stand to the side of the 
lamp cover, not underneath it. Remove the lamp cover gently. Small pieces of glass may fall out when the 
lamp cover is opened. If pieces of glass get into your eyes or mouth, se\
ek medical advice immediately.
The lamp contains mercury. Consult your local municipality or your dealer about correct disposal \
of used  z
lamp units.
Attention
Do not use other than designated lamp units. z
The part numbers of accessories and separately sold components are subject to change without notice. z
When to replace the lamp unit J
The lamp unit is a consumable component. Brightness decreases according \
to duration of usage, so 
periodical replacement of the lamp unit is necessary.
When the projection lamp of the projector reaches its end of life, the Lamp replacement icon appears on the 
screen and  indicator lights yellow. Replace the lamp with a new one promptly.
Lamp run timeOn screen
Lamp replacement icon
LAMP indicator
Over 3000 hours*
Over 3200 hours*
The message is displayed for 10 seconds. If you 
press any button within the 10 seconds, the message 
disappears.
If the power is turned on without replacing the lamp, 
the power automatically turns off after approximately 
ten minutes to prevent the malfunction of the projector.
Lights in yellow (even in  
stand-by mode).
* 3200 hours of use is a rough guideline, but is not a guarantee. The lamp run time differs depending on the 
setting of "Lamp power" menu.
Note
The Lamp replacement icon will not appear when the [Display] function is\
 set to [Off ] ( zÆpage 51), or during 
[Freeze] (Æpage 32), or [AV mute] (Æpage 32). 
						

							Replacement
62 - ENGLISH
Maintenance
 JReplacing the Lamp unit
CAUTION:
When the projector is mounted on a ceiling, do not work with your face close to the projector. z
Attach the lamp unit and the lamp cover securely. z
When you experience difficulty in installing the lamp, remove it and try again. If you use force to install the  z
lamp, the connector may be damaged.
Turn off the Power by following the procedure             1 ) 
in “Turning off the projector” (Æpage 29).            
Unplug the AC power cord. Wait at least 45            
minutes and make sure the lamp unit and              
surroundings are cool.
Use a Phillips screwdriver to loosen the 2 ) 
lamp cover fixing screw and remove the 
lamp cover.
Remove the lamp cover by pulling it slowly toward  z
the direction of the arrow.
Use a Phillips screwdriver to loosen the 3 ) 
two lamp unit fixing screws until the 
screws turn freely. Hold the used lamp unit 
by its handles, and pull it gently from the 
projector.
Insert the new lamp unit in correct direction. 4 ) 
Tighten the two lamp unit fixing screws 
securely with a Phillips screwdriver.
Attach the lamp cover, and tighten the lamp  5 ) 
cover fixing screw securely with a Phillips  
screwdriver.
Attach the lamp cover by pushing it slowly opposite   z
the direction of the arrow.
Resetting the Lamp Runtime J
Be sure to reset the [Lamp runtime] after replacing the lamp. (Æpage 55 " Lamp runtime reset")
Lamp cover
fixing screw
Lamp cover
Handles
Lamp unit
Lamp unit fixing screws 
						

							Replacement
ENGLISH - 63
Maintenance
Lamp unit fixing screws
Attaching the Lens Cap
When moving this projector or while not using it over an extended period of time, attach the lens cap.
Attach the lens cap according to the following procedures.
Thread the string through the hole on the              1 ) 
lens cap and then tie a knot in the string               
to secure it in place.
To pass the other end of the string into                2 ) 
the hole on the bottom of the projector                
and pull at it. 
						

							64 - ENGLISH
Maintenance
Troubleshooting
Please check following points. For details, see the corresponding pages.\
ProblemCauseReference 
page
Power does not turn 
on.
The power cord may not be connected. z—
No electric supply is at the wall outlet. z—
The circuit breakers have tripped. z—
Is the  indicator,  indicator, or  z
 indicator lit or blinking?
26, 58
The lamp cover has not been securely installed. z—
No picture appears.
The video signal input source may not be connected to a terminal  z
properly.
24
The input selection setting may not be correct. z31
The [Brightness] adjustment setting may be at the minimum setting. z43
The input source which is connected to the projector may have a problem. z—
The [AV MUTE] function may be in use. z32
The picture is fuzzy.
The lens focus may not have been set correctly. z30
The projector may not be at the correct distance from the screen. z20
The lens may be dirty. z13
The projector may be tilted too much. z—
The color is pale or 
grayish.
[Color] or [Tint] adjustment may be incorrect. z43
The input source which is connected to the projector may not be adjusted  z
correctly.
—
RGB cable is damaged. z—
No sound from the 
internal speaker
The input terminals may not have been correctly connected. z24
The volume may have been set to the minimum level. z33
The [AV MUTE] function may have been turned on. z32
The [MUTE] function may have been turned on. z33
The remote control 
does not operate.
The batteries may be weak. z—
The batteries may not have been inserted correctly. z18
The remote control signal receptor on the projector may be obstructed. z15
The remote control unit may be out of the operation range. z15
Strong light such as fluorescent shine onto the signal receptor. z15
When different codes are set on the projector and on the remote contro zl.54
The control buttons 
of the projector do 
not operate.
The control panel is not available if the control panel is locked at [Ke\
y  z
lock] under [Security] of [Setting] section.
54
The picture does not 
display correctly.
There may be a problem with the VCR or other signal source. z
A signal which is not compatible with the projector is being input. z
—
69-71
Picture from a 
computer does not 
appear.
The cable may be longer than the optional cable. z—
The external video output from a laptop computer may not be correct.  z—
The image is 
distorted or runs off.
Check [PC adj.] or [Screen] and adjust them. z40,46
Note
If the problem persists, after confirming the contents of the table, please consult your dealer. z 
						

							ENGLISH - 65
Appendix
Technical Information
Serial terminal
The  terminal conforms to the RS-232C interface specification, so that the projector can be 
controlled by a personal computer which is connected to this connector.
 JConnection
 JPin assignments and signal names
D-Sub 9-pin (male)
Outside viewPin No.Signal nameContents
—NC
RXDReceived data
TXDTransmitted data
—NC
GNDEarth
—NC
—NC
—NC
—NC
 JCommunication conditions
Signal levelRS-232C-compliantCharacter length8 bits
Sync. methodAsynchronousStop bit1 bit
Baud rate19200 bpsX parameterNone
ParityNoneS parameterNone
Note
When [AMX D. D.] function is set to [On] under the [Setting] menu, the B\
aud rate will change to 9600 bps  z
automatically.
D-Sub 9-pin (female)
D-Sub 9-pin (male)
Connecting terminals  
on projector
Communication cable
Computer 
						

							Technical Information
66 - ENGLISH
Appendix
 JBasic format
Transmission from the computer begins with STX, then the command, paramet\
er, and ETX are sent in this 
order. Add parameters according to the details of control.
STXC1C2C3 : P1 P2Pn ETX
When sending commands without parameters, a colon (:) is not necessary\
.: 
 JBasic format (with sub command)
STX C1C2C3 :  ETX
S1S2S3S4S5 EP1P2P3P4P5P6
When transmitting a command which does not need a parameter, the operation (E) and parameter are not : 
necessary.
End  
(1 byte)Parameter  
(undefined length)
Colon   
(1 byte)
3 command  characters   (3 bytes)Start  
(1 byte)
Parameter (6 bytes)
Symbol “+” or “-” (1 byte) and set value or 
adjustment value (5 bytes)
Operation (1 byte)
“=” (Value specified using parameter is set)
Same as basic format
Sub command (5 bytes) 
						

							Technical Information
ENGLISH - 67
Appendix
 JCable specifications
[When connected to a computer]
Projector
1NCNC1
Computer (DTE 
specifications)
22334NCNC45566778899
 JControl commands
When controlling the projector from a computer, the following commands are available:
[Projector control command]
CommandControl contentsRemarks
PONPower [ON]
POFPower [OFF]
IISINPUT selection
(Parameter)
VID = Video
SVD = Computer 1 (S –video) 
RG1 = Computer 1 (RGB)
RG2 = Computer 2 (RGB)
SCT = Computer 1 (Scart)
OSHAV MUTE function
Turning off the projection and sound temporarily.
Sending the command switches [ON]/[OFF].
Do not switch [ON]/[OFF] in a short period of time.
OFZFreezeSending the command switches [ON]/[OFF].
AUUVolume up
AUDVolume down
DZUD.ZOOM up
DZDD.ZOOM down
QPWPower query000 = Standby
001 = Power on
Q$SLamp condition 
query
(Call back)
0 = Stand-by
1 = Lamp ON control active
2 = Lamp ON
3 = Lamp OFF control active 
						

							Technical Information
68 - ENGLISH
Appendix
Other terminal
Pin assignments and signal names of  terminal
Outside viewPin No.Signal names
 : Not assigned
 - , ,  : GND terminals
R/PR/S-C
G/G - SYNC/Y/S-Y
B/PB
+5V
DDC data
HD/SYNC
VD
DDC clock
Pin assignments and signal names of   J
terminal
Outside viewPin No.Signal names
, , , ,  : Not assigned
 - ,  : GND terminals
R/PR
G/G  SYNC/Y
B/PB
HD/SYNC
VD 
						

							Technical Information
ENGLISH - 69
Appendix
List of compatible signals
The following table specifies the types of signals compatible with the projectors.
Format :   V = VIDEO, S = S-VIDEO, C = COMPUTER, Y = YPBPR.
Mode
Display 
resolution *1 
(dots)
Scanning 
frequencyDot clock 
frequency 
(MHz)
Picture 
quality *2PnP
Format
H (kHz)V(Hz)P T-
LW25HE
P T-
LX30HE
P T-
LX26HECOMPUTER
480p640 x 48031.4759.8825.2AAA
C/Y
480i640 x 480i15.73460.0012.2727
576p768 x 57631.2550.0029.5AAA
576i768 x 576i15.62550.0014.75AAA
720p1280 x 72037.5050.0074.25
45.0060.0074.25
1035i1920 x 1035i33.7560.0074.25AAA
1080/50i1920 x 1080i28.12550.0074.25AAA
1080/60i1920 x 1080i33.7560.0074.25AAA
VGA
640 x 480
31.4759.8825.149AAA○
C
37.8674.3831.50AAA○
37.8672.8131.50AAA○
37.5075.0031.50AAA○
43.26985.0036.00AAA
640 x 40031.4770.0925.175AAA
720 x 40031.4770.0928.322AAA
SVGA800 x 600
35.15656.2536.00AAA○
37.8860.3240.00AAA○
46.87575.0049.50AAA○
53.67485.0656.25AAA○
48.0872.1950.00AAA
37.9061.0340.02AAA
34.5055.3836.432AAA
38.0060.5140.128AAA
38.6060.3138.60AAA
32.7051.0932.70AAA
38.0060.5140.128AAA
MAC1280 x 96075.0075.08126.00AAA○
1280 x 102480.0075.08135.20AAA○
MAC 13640 x 48035.0066.6730.24AAA○
MAC LC13640 x 48034.9766.6031.33AAA○
MAC 16832 x 62449.7274.5557.283AAA○
MAC 191024 x 76860.2475.0880.01AAA○
MAC 211152 x 87068.6875.06100.00AAA○
SXGA+11400 x 105063.97060.190107.990
SXGA+21400 x 105065.35060.120122.850
SXGA+31400 x 105065.12059.900122.430
“i” added to the resolution value indicates an interlaced signal.*1 : 
Picture quality is indicated by the following symbols.*2 : 
AA: Maximum picture quality can be obtained.
A: Signals are converted by the image processing circuit. 
						

							Technical Information
70 - ENGLISH
Appendix
Mode
Display 
resolution *1 
(dots)
Scanning 
frequencyDot clock 
frequency 
(MHz)
Picture 
quality *2PnP
Format
H (kHz)V(Hz)P T-
LW25HE
P T-
LX30HE
P T-
LX26HECOMPUTER
XGA
1024 x 768
48.3660.0065.00AAAAA
C
68.67784.97794.504AAAAA○
60.02375.0378.75AAAAA○
56.47670.0775.00AAAAA○
60.3174.9279.252AAAAA
48.5060.0265.179AAAAA
44.0054.5859.129AAAAA
63.4879.3583.41AAAAA
62.0477.0784.375AAAAA
61.0075.7081.00AAAAA
46.9058.2063.03AAAAA
47.0058.3061.664AAAAA
58.0372.0074.745AAAAA
1024 x 768i36.0087.1747.30AAAAA
35.52286.9644.90AAAAA
SXGA
1152 x 86464.2070.4094.560AAA
1152 x 900
61.2065.2092.00AAA
71.4075.60105.10AAA
61.8566.0094.50AAA
1280 x 96060.0060.00108.00AAA○
1280 x 1024
62.5058.60108.00AAA
63.9060.00107.35AAA○
63.3459.98108.18AAA
63.7460.01109.497AAA
71.6967.19117.004AAA
81.1376.107135.008AAA
63.9860.02108.00AAA
79.97675.025135.00AAA
63.3760.01111.520AAA
76.9772.00130.08AAA
63.7960.18108.19AAA
91.14685.024157.5AAA
1280 x 1024i
50.0086.0080.00AAA
50.0094.0080.00AAA
46.4386.7078.745AAA
“i” added to the resolution value indicates an interlaced signal.*1 : 
Picture quality is indicated by the following symbols.*2 : 
AA: Maximum picture quality can be obtained.
A: Signals are converted by the image processing circuit.