InFocus LP840 Projector User Manual

							41 4
Loosen the three captive screws on the lamp module.
WARNINGS: 
 To avoid burns, allow the projector to cool for at least 60 minutes before 
you replace the lamp.
 Do not drop the lamp module. The glass may shatter and cause injury.
 Do not touch the glass lamp screen. Fingerprints can obscure projection 
sharpness.
 Be extremely careful when removing the lamp housing. In the unlikely 
event that the lamp ruptures, small glass fragments may be generated. 
The lamp module is designed to contain most of these fragments, but 
use caution when removing it.
5
Carefully remove the lamp module by grasping and lifting the metal 
bail wire. Dispose of the lamp in an environmentally proper manner. 
6
Install the new lamp module, making sure that it is properly seated.
7
Tighten the three captive screws.
8
Replace the cover over the lamp module by inserting the tabs into the 
tab bays and pushing the rest of the cover down into place.
9
Plug in the power cable, press the power switch then press the Pow e r 
button to turn the projector back on.
10
Reset the lamp hour timer. See page 38 for more information.
Resetting the lamp timerIf the lamp timer has reached the maximum number of hours for the projec-
tor lamp, the LED on the projector ’s keypad will show a lamp error (see 
“LED Behavior” on page 46). To reset the lamp timer, simultaneously press 
the decrease volume button and increase volume button on the keypad for 
10 seconds. At that point the LED will turn green and you can power on the 
projector. You can also navigate to the Settings>Service menu and select 
Lamp Reset to reset the lamp timer. 
loosen the captive screws on lamp module
remove module using bail wire
reset lamp time in Service menu 
						

							42
Cleaning the dust filter1
Turn off the projector and unplug the power cable. 
2
Wait 60 minutes to allow the projector to cool thoroughly.
WA R N I N G: To avoid burns, allow the projector to cool for at least 60 
minutes before you clean or replace the dust filter.
3
Remove the dust filter grill door on the side of the projector by pulling 
down on the two tabs at the grill’s top. 
4
Press the tab on the center of the dust filter and lift it off.
5
Clean the filter using a vacuum set on low power.
6
Replace the dust filter and the dust filter grill door.
7
Reset the filter hour timer.
TroubleshootingIf the Temp and Lamp LEDs indicate a problem with the filter, check the fol-
lowing:
 Use a soft cloth to wipe the mirrors on the dust filter grill.
 Remove the dust filter and use a soft cloth to wipe the window behind 
the dust filter.
 Replace the dust filter and the dust filter grill.Using the security lockThe projector has a security lock for use with a cable lock system. See the 
Accessories catalog that came with the projector, or visit our website, for 
ordering information. Refer to the information that came with the lock for 
instructions on how to use it.
turn off and unplug
the projector
wait 60 minutes
remove dust filter grillremove dust filter
 
security lock 
						

							43
AppendixProjected image sizeNOTE: Visit our website for an interactive image size calculator.
Table 1: Projection sizes: Standard lens (1.5 - 2.2:1 throw ratio)
The image offset range for the standard lens is 10:1 (100%) to 1:1 (50%). Table 2: Projection sizes: Short Fixed lens (0.8:1 throw ratio)
The optimal offset setting for the fixed focus short throw lens is 50% (on 
axis). Minimum Image Maximum Image
Distance 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m)
Min Distance
3/0.91.7/0.52 1.46/.42 2.5/0.76 1.82/0.55
5/1.5 2.84/0.87 2.27/.69 4.17/1.27 4.55/1.39
10/3.0 5.68/1.73 4,55/1.39 8.33/2.54 9.09/2.77
20/6.1 11.36/3.46 9.09/2.77 16.67/5.08 13.33/4.06
30/9.1 17.05/5.2 13.64/4.16 25.0/7.62 20.0/6.10
40/12.2 22.73/6.93 18.18/5.54 33.33/10.16 26.67/8.13
Max Distance
45.5/13.925.85/7.88 20.68/6.20 37.92/11.56 30.33/9.25
Image Size
Distance (feet/m) Diagonal Image
(feet/m)Image Width 
(feet/m)
Min Distance
3/0.94.69/1.43 3.75/1.14
5/1.5 7.81/2.38 6.25/1.91
10/3.0 15.63/4.76 12.5/3.81
Max Distance 12/3.7 18.75/5.72 15.0/4.57 
						

							44
Table 3: Projection sizes: Short Zoom lens (1.1 -1.51 throw ratio range)
The image offset range for the short throw lens is 10:1 (100%) to 1:1 (50%). Table 4: Projection sizes: Long Throw lens (2.2 - 4.2:1 throw ratio range)
The image offset range for the long throw lens is 10:1 (100%) to 1:1 (50%). Minimum Image Maximum Image
Distance 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m)
Min Distance
2/0.61.67/0.51 1.33/0.41 2.27/0.69 1.82/0.55
5/1.5 4.17/1.27 3.33/1.02 5.68/1.73 4.55/1.39
10/3.0 8.33/2.54 6.67/2.03 11.36/3.46 9.09/2.77
20/6.1 16.67/5.08 13.33/4.06 22.73/6.93 18.18/5.54
25/7.6 20.83/6.35 16.67/5.08 28.41/8.66 22.73/6.93
Max Distance
30.5/9.325.42/7.75 20.33/6.2 34.66/10.56 27.73/8.45
Minimum Image Maximum Image
Distance 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m)
Min Distance
4.2/1.31.28/0.39 1.02/.31 2.39/0.73 1.91/0.58
10/3.0 3.05/0.93 2.44/0.74 5.68/1.73 4.55/1.39
20/6.1 6.1/1.86 4.88/1.49 11.36/3.46 9.09/2.77
30/9.1 9.15/2.79 7.32/2.23 17.05/5.2 13.64/4.16
40/12.2 12.2/3.72 9.76/2.97 22.73/6.93 18.18/5.54
60/18.3 18.29/5.58 14.63/4.46 34.09/10.39 27.27/8.31
Max Distance
60/18.325.37/7.73 20.29/6.19 47.27/14.41 37.82/11.53 
						

							45
Table 5:  Projection sizes: Super Long throw lens 3.9 - 7.3:1)
The image offset range for the super throw lens is 10:1 (100%) to 1:1 (50%).Minimum Image Maximum Image
Distance 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m) Diagonal 
Image
(feet/m)Image 
Width 
(feet/m)
Min Distance
7.5/2.31.28/0.39 1.03/0.31 2.4/0.73 1.92/0.59
25/7.6 4.28/1.3 3.42/1.04 8.01/2.44 6.41/1.95
50/15.2 8.56/2.61 6.85/2.09 16.03/4.88 12.82/3.91
75/22.9 12.84/3.91 10.27/3.13 24.04/7.33 19.23/5.86
100/30.5 17.12/5.22 13.70/4.18 32.05/9.07 25.64/7.82
125/38.1 21.4/6.52 17.12/5.22 40.06/12.21 32.05/9.77
Max Distance
146.5/44.725.09/7,65 20.07/6.12 46.96/14.31 37.56/11.45 
						

							46
LED BehaviorLED color/behavior
Meaning
Power: blinking green
Te m p :  N / A
Lamp: N/AThe power switch has been toggled 
on and the software is initializing, or 
the projector is powering down and 
the fans are running to cool the lamp.
Power: blinking green (once)
Te m p :  N / A
Lamp: N/APower Save or Screen Save.
Power: solid green
Te m p :  N / A
Lamp: N/AThe power switch has been toggled 
on and the software has initialized or 
the projector has been powered off 
via the remote. 
Power: solid green
Temp: blinking red
Lamp: blinking redIf Temp and Lamp are flashing simulta-
neously, the filter hasn’t been cleaned 
in 100 hrs. 
If Temp and Lamp are flashing simulta-
neously (twice), the cooling air filter 
may be dusty. Please see “Cleaning 
the dust filter” on page 42.
If Temp and Lamp are flashing alter-
nately, the projector is below temper-
ature specifications. Please use the 
projector in an environment between 
0°C/32
°F to 35
°C/95
°F.  C o n t a c t  
Technical Support if the problem per-
sists.
Power : solid red
Te m p :  N / A
Lamp: blinking redLamp won’t strike (blinks one time)
Lamp has exceeded lamp hours limit 
(blinks two times)
Lamp has failed (blinks three times)
Lamp door is open (blinks four times)
Turn off the projector and wait one 
minute, then turn the projector on 
again. If the projector has exceeded 
its lamp life limit, replace the lamp 
and reset the lamp timer. Please con-
tact Technical Support if the problem 
persists.
Power : solid red
Temp: blinking red
Lamp: N/AFan failure. Make sure the vents aren’t 
blocked. Contact Technical Support if 
the problem persists.
Power : solid red
Te m p :  s o l i d  r e d
Lamp: N/AThe projector is overheating. Contact 
Technical Support if the problem per-
sists.
Power : solid red
Te m p :  N / A
Lamp: N/AUnidentified error. Please contact 
Technical Support. 
						

							47
RS-232 commands Communication ConfigurationVisit our website for additional RS-232 settings and information.
To control this projector via RS-232, connect a null modem cable and set the 
control system serial port settings to match the following communication 
configuration: Command FormatAll commands consist of 3 alpha characters followed by a request, all 
enclosed in parentheses. The request can be a read request (indicated by a 
?) or a write request (indicated by 1 to 4 ASCII digits).
A read request example: 
(AAA?) where
( starts the command
AAA denotes the command
? denotes the read request
) ends the commandA read command returns the range and the current setting, for example:
A write request example: 
(AAA####) where
(starts the command
AAA denotes the command
#### denotes the value to be written 
(leading zeros not necessary)
) ends the command
Some commands have ranges, while others are absolute. If a number greater 
than the maximum range is received, it is automatically set to the maximum 
number for that function. If a command is received that is not understood, a 
? is returned. With absolute settings, 0 is off, 1-9999 is on. The one excep-
tion is the Power command, where 0 is off and 1 is on.
To assure the projector can process a command, wait 3 seconds before enter-
ing the next command.
RS-232 Port Settings
Setting Value
Bits per second 19,200 
Data bits 8 
Parity None 
Stop bits 1 
Flow control None 
Emulation VT100 
Read Command Examples
Function Command Response 
Brightness (BRT?) (96-160,128)
Volume (VOL?) (0-32, 0) 
Lamp Hours (LMP?) (0-65534, 42)  
						

							48 Error Conditions
Not all commands are supported for all projectors. If an unsupported com-
mand is issued, the command will be ignored. If a command is received that 
is not understood, a ‘?’ character will be returned indicating the command 
was not understood.LimitationsThe projector cannot respond to commands coming in at a high-rate. There-
fore, a delay must occur between commands to ensure that the command 
gets properly executed. To assure the projector can process a command, 
wait 3 seconds before entering the next command. 
The Step column refers to increasing or decreasing the menu bar position 
since the On-screen Display is not an exact match of values. For example, 
Step 2 changes the data by 2 through the CLI (Command Line Interface). 
The menu bar is up (or down) by 1.
Write Command Examples
Function Command Response 
Brightness (BRT140) Sets the brightness to 140
Power (PWRO) Turns power off 
Power (PWR1) Turns power on 
Function
Com-
mand
Min
Max
De-
fault
Step
Auto Power
0: disable
1: enableAPO at RW 0 1 0
Aspect Ratio
0: Native 
1: 16:9 
2: 4:3ARZ at RW 0 2 2  
Auto Source
0: disable
1: enableASC at RW 0 1 1
Balance  BAL at RW 0 100 50 1
Blue Gain BCG at RW 0 100 50 2
Brightness BRT at RW 96 160 128 1
Blank Screen
0: black
1: blue 
2: whiteBSC at RW 0 2 1
Blank
0: off
1: onBLK at W 0 1  -1
Ceiling
0: disable
1: enableCEL at RW 0 1 0
Color CLR at RW 65 191 128 1 
						

							49
Function
Com-
mand
Min
Max
De-
fault
Step
Contrast CON at RW 96 160 128 1
Color Space 
0: RGB 
1: SMPTE240 
2: REC709 
3: REC601 
7: AutoCSM at RW 0 7 7
Green Gain GCG at RW 0 100 50 2
Vertical Keystone DKC at RW 78 178 128 1
Horizontal Keystone DKH at RW 78 178 128 1
Display Messages
0: disable
1: enableDMG at RW01 11
Power-up Source
0: computer 1
1: computer 2
2: video 1
3: video 2
4: video 3
5: computer 3DSC at RW 0 5 0
Startup Logo
0: blank screen 
1: default
2: capturedDSU at RW 0 2 1
Function
Com-
mand
Min
Max
De-
fault
Step
Effect
0: blank 
1: mute 
2: aspect ratio 
3: source 
4: auto image 
5: freeze 
6: zoom 
7: PiP SourceEFK at RW08 71
Horizontal Position HPS at RW def:
-50def: +50 auto 1
Language 
0 = English
1 = French
2 = German
3 = Spanish
4 = Traditional Chinese
5 = Japanese
6 = Korean
7 = Portuguese
8 = Russian
9 = Norwegian
10 = Simplified Chinese
11 = ItalianLAN at RW 0 11 0 1
Time In Hours Last 
Bulb1 LastedLB1 at R 0 32766 0
Time In Hours Last 
Bulb2 LastedLB2 at R 0 32766 0 
						

							50
Function
Com-
mand
Min
Max
De-
fault
Step
Time In Hours Last 
Bulb3 LastedLB3 at R 0 32766 0
Lamp Lit
0: not lit
1: litLML at R 0 1
Lamp Hours LMP at R 0 65534 0 1
Lamp Reset
0: not reset
1: resetLMR at RW 0 32766 0
Lamp Total On Time 
(All Bulbs)LMT at R 0 214748
3646
Low Power
0: disable
1: enableLPE at RW 0 1 0
Menu
0: disable
1: enableMNU at RW 0 1 0
Phase MSS at RW 0 31 18 1
Mute
0: disable
1: enableMTE at RW 0 1 0
Tracking MTS at RW def:
-128def:
+128auto 1
Function
Com-
mand
Min
Max
De-
fault
Step
Menu Navigation 
0: up 
1: down 
4: selectNAV at W 0 4 -1
NND
0: disable
1: enableNND at RW 0 1 1
Unit Total Time On ONL at R 0 214748
36460
Overscan
0: disable
1: enableOVS at RW 0 1 0
Presets 
0: presentation 
1: photography 
2: film 
3: video 
10: user 1 
11: user 2 
12: user 3PST at RW 0 12 c: 0
v: 3
Power Save
0: disable
1: enablePSV at RW 0 1 0
Power
0: disable
1: enablePWR at RW 0 1 0
Red Gain at RW RCG at RW 0 100 50 2