Casio Projector XJ-A 251 User Manual

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Connecting to an Image Output Device
Connect the projector’s COMPUTER terminal to the RGB terminal of a computer as shown in the 
illustration below.
Important!zAlways turn off the projector and the computer before connecting them.
zTake care so the volume level of the computer is not set too high.
Connecting the Analog RGB Output of a Computer to 
the Projector
Bundled mini D-Sub cable
Audio cable (commercially available) AV terminal
To monitor terminal
(analog RGB output terminal) COMPUTER terminal
To line output terminal
Projector Computer 
						

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The projector supports projection and output of HDMI video and audio output from a computer or 
video device.
Important!Turn off the projector and the computer or video device before connecting them.
zYou will need to obtain a commercially available HDMI cable with a connector that matches the 
terminal of the output device on one end and a connector that matches the projector’s HDMI port 
(HDMI Type A Socket) on the other end.
zFor information about HDMI video signal supported by the projector, see page 54.
zThe projector supports L-PCM 32kHz, 44.1kHz, and 48kHz HDMI audio signals.
Connecting the HDMI Output of a Video Device or 
Computer to the Projector
Projector
HDMI port
To HDMI output terminal
Computer or video device
HDMI cable (commercially available) 
						

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The projector is able to project images from the composite video output or component video output of 
a connected video device.
Important!Always turn off the projector and the video device before connecting them.
Connection to a composite video output
zYou can use the bundled special AV cable to connect to a pin jack (RCA) type video output terminal. 
When connecting a video camera or other video device with a special video output terminal, use the 
special cable that comes with the video device. For details, see the documentation that comes with 
the video device.
Connection to a component video output
zComponent video output terminals come in 3-terminal sets: Y·Cb·Cr or Y·Pb·Pr. Be sure to match 
the colors of the plugs on a component video cable with the colors of the terminals (Green: Y; 
Blue: Cb/Pb; Red: Cr/Pr).
zNote that connection only to an analog component video output terminal is supported.
Connection to a digital output terminal is not supported.
Connecting to a Video Device
Video device
Bundled special AV cable
Projector
Yellow Red To video output
terminalTo audio output 
terminals
White AV terminal
Projector
COMPUTER terminal AV terminal
Bundled special AV cable Component video cable (commercially available)To component video
output terminalsTo audio output 
terminals
Video device
Yellow 
(Not connected)
Red
White 
						

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Operation During Projection
Turning on the projector initially causes the same input source that was selected the last time it was 
turned off to be selected.
To select a different input source
1.Press the [INPUT] key.
zThis displays the input source selection screen.
2.Use the [T] and [S] keys to select the name of the input source you want to 
select and then press the [ENTER] key.
zThe name of the input source you select appears in the upper right corner of the projection 
screen for a few seconds.
zThe message “No signal input.” will appear if no input signal can be selected.
Resolution
Depending on the projector model, its video resolution will be fixed at XGA (1024 × 768 pixels) or 
WXGA (1280 × 800 pixels). Images may appear coarse, text and other figures may be difficult to read 
or a moire pattern may appear when the input signal from a computer does not match the projector’s 
video resolution. If this happens, try doing the following.
zChange the computer’s output resolution setting so it matches the projector’s video resolution.
For information about the video resolution of your projector, see the “DLP chip” item of the 
“Specifications” (page 55). See the user documentation that comes with your computer for details 
about changing its settings.
zChange the “Aspect Ratio” setting to “True” (Applies only to models that support WXGA video 
resolution).
With the “True” setting, the projector projects the input signal at its actual size (1 input source dot 
equal to one projector output pixel dot).
For information about configuring the Aspect Ratio setting, see “Changing the Aspect Ratio of the 
Projected Image” (page 19).
Selecting the Input Source 
						

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You can perform the following operations while projecting an image.
zImage brightness adjustment
zManual keystone correction
zColor mode selection
zImage zooming
zMomentarily blanking the image and muting the audio
zImage freeze
zPointer display in the projected image
zAspect ratio switching
Adjusting Image Brightness
Note(for USB port model users)
Use the setup menu (page 25) to adjust image brightness when the input source is an external 
device connected to the USB port or via the wireless adapter.
1.Press the [BRIGHT] key.
zThis displays the brightness adjustment window.
2.Use the [W] and [X] keys to adjust image brightness.
3.To hide the window, press the [ESC] key.
To use manual keystone correction
The projector has a keystone correction feature that prevents 
distortion of the projected image when projecting from an 
angle. The projector detects when it is at a vertical angle to the 
screen and performs keystone correction automatically.
You can use the [KEYSTONE +] and [KEYSTONE –] keys to 
adjust keystone correction manually.
Image Operations During Projection
B 
						

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Selecting the Color Mode
You can select from among various different color mode settings in accordance with image contents 
and projection conditions.
Important!The color mode cannot be selected in the following cases.
zWhen “Off” is selected for the Eco Mode setting (page 23)
To change the color mode
1.Press the [COLOR MODE] key.
zThis displays the color mode selection window. The currently selected color mode is the one 
whose button is selected (filled in).
2.Use the [T] and [S] keys to move the highlighting to the color mode you want to 
select, and then press the [ENTER] key.
zThis will select the button next to the highlighted color mode name.
zFor details on what each color mode does, see “Color Mode” (page 34) under “Image 
Adjustment 1 Main Menu”.
3.To hide the window, press the [ESC] key.
Zooming an Image
1.Press the [D-ZOOM +] key.
zThis will enlarge the center of the projected image one step.
2.To zoom in on the center of the projected image more, press the [D-ZOOM +] 
key again. To zoom out, press the [D-ZOOM –] key.
zEach press of [D-ZOOM +] zooms in (increases the zoom factor), while [D-ZOOM –] zooms 
out. Holding down either key continuously scrolls the zoom factor.
3.While an image is zoomed, use the [S], [T], [W], and [X] keys to scroll the view 
to other parts of the image.
4.To exit the zoom operation, press the [ESC] key. 
						

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Momentarily Blanking the Image and Muting the Audio
1.Press the [BLANK] key.
zThis temporarily blanks the image (projecting a black screen) and mutes the audio.
2.To resume normal image and sound, press the [BLANK] key (or [ESC] key).
NoteYou can specify projection of a black screen or blue screen, or a logo. For details, see “Blank 
Screen” (page 37) under “Screen Settings Main Menu”.
Freezing an Image
Pressing the [FREEZE] key freezes the projected image.
To freeze the projected image
1.While an image is being projected from an input source, press the [FREEZE] key.
zThis will capture the image that is on the screen at the moment you press [FREEZE] and stores 
it in projector memory. That image remains projected on the screen.
2.To restore projection of the image from an input source, press the [ESC] key.
B 
						

							18
Displaying a Pointer in the Projected Image
You can select from among different pointer styles, including various arrow styles, for display in the 
projected image. Pointers can be used during a presentation to indicate or highlight a specific part of 
the image.
NoteDepending on the pointer style you are using, the pointer may not display properly when you are 
using keystone correction. If this happens, use the [KEYSTONE +] and [KEYSTONE –] keys to 
change the keystone correction value to zero.
To display a pointer in the image
1.Press the [POINTER] key.
zThis will cause a pointer to appear in the image.
zYou also can use the setup menu to specify the pointer type that appears first when you press 
the [POINTER] key. For details, see “Pointer” (page 40) under “Option Settings 2 Main Menu”.
2.Use the cursor keys to move the pointer to the location you want.
zHolding down a cursor key moves the cursor at high speed.
3.To modify the pointer as described below, press the [STYLE] key.
To select the pointer type
1.Press the [POINTER] key to display the pointer.
2.Keep pressing the [POINTER] key until the pointer you want is displayed.
zEach press of the [POINTER] key cycles through the available pointer types.
To clear the pointer from the image
Press the [ESC] key.
For this pointer type:Pressing [STYLE] will change it like this:
  
J     J     J  
  
J     J     J  
  
J     J     J  
  
J     J     J  
Toggle between flashing and not flashing 
						

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Changing the Aspect Ratio of the Projected Image
Press the [ASPECT] key to cycle through the aspect ratio settings for the projected image.
Available settings depend on your projector model as shown below. For details about the meaning of 
each setting, see “Aspect Ratio” (page 36) under “Screen Settings Main Menu”.
XJ-A241/XJ-A246/XJ-A251/XJ-A256
Pressing the [ASPECT] key will cycle through settings in accordance with the current input source as 
shown below.
XJ-A141/XJ-A146
Pressing the [ASPECT] key will toggle between settings in accordance with the current input source as 
shown below.
NotezFor details about how the aspect ratio setting affects the projected image, see “Aspect Ratio 
Setting and Projection Image” (page 51).
zYou also can change the aspect ratio setting using the setup menu. For details, see “Aspect 
Ratio” (page 36) under “Screen Settings Main Menu”.
Important!Note that enlarging or reducing the size of an image using the [ASPECT] key for commercial 
purposes or public presentation may infringe on the legally protected copyright of the copyright 
holder of the original material.
Input SourcePressing [ASPECT] will cycle through these settings:
Video, Component, HDMI (DTV) Normal J 16:9 J 4:3 J Letter Box
RGB, HDMI (PC) Normal J Full J 4:3 J True
Input SourcePressing [ASPECT] will toggle between these settings:
Video, Component, HDMI (DTV) Normal 
 16:9
RGB, HDMI (PC) Normal 
 Full
B 
						

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You can use the remote controller keys to adjust the volume level of the audio that is output from the 
projector’s speaker or the AV terminal.
To adjust the volume level
1.Press the [VOLUME] key.
zThis causes the [Volume] screen to appear on the projected image.
2.Press the [X] key to increase the volume, or the [W] key to lower the volume.
3.After the setting is the way you want, press the [ESC] key.
zThis causes the [Volume] screen to disappear.
NoteYou also can use the setup menu to adjust the volume level. For details, see “Volume 
Adjustment Main Menu” on page 35.
To mute the audio
1.Press the [VOLUME] key.
2.Press the [ENTER] key.
zThis stops output from the speaker.
3.To restore the audio, press the [VOLUME] key again.
Adjusting the Volume Level
B