Hitachi Cp-X251 Projector Users Manual

							


Setting up
Connecting your devices
CAUTION  ►Turn off all devices prior to connecting them to the projector. 
Attempting to connect a live device to the projector may generate extrem\
ely 
loud noises or other abnormalities that may result in malfunction and/or damage 
to the device and/or projector.
►Use the accessory cable or a designated-type cable for the connection. 
Some cables have to be used with core set. A too long cable may cause a 
certain picture degradation. Please consult with your dealer for details\
. For 
cables that have a core only at one end, connect the core to the project\
or.
►Make sure that you connect devices to the correct port. Incorrect connection 
may result in malfunction and/or damage to the device and/or projector. 
NOTE  • Whenever attempting to connect a laptop computer to the projector, be sure 
to activate the laptop’s RGB external image output (set the laptop to CRT display or to 
simultaneous LCD and CRT display). For details on how this is done, please refer to the 
instruction manual of the corresponding laptop computer.
• Secure the screws on the connectors and tighten.
• Some computers may have multiple display screen modes. Use of some of th\
ese 
modes will not be possible with this projector.
• For some RGB signal modes, the optional Mac adapter is necessary.
• When the image resolution is changed on a computer, depending on an input, 
automatic adjustment function may take some time and may not be complete\
d. In this 
case, you may not be able to see a check box to select “Yes/No” for the new resolution 
on Windows. Then the resolution will go back to the original. It might be recommende\
d 
to use other CRT or LCD monitors to change the resolution.
About Plug-and-Play capability
Plug-and-Play is a system composed of the computer, its operating system and 
peripheral equipment (i.e. display devices). This projector is compatible with VESA DDC 
B. Plug-and-Play can be achieved by connecting this projector to a compu\
ter is VESA 
DDC (display data channel) compatible. 
• Please take advantage of this function by connecting the accessory \
RGB cable to the 
RGB IN port (DDC B compatible). Plug-and-Play may not work properly if any other 
type of connection is attempted.
• Please use the standard drivers in your computer as this projector \
is a Plug-and-Play 
monitor. 
						

							


Setting up
Examples of connection with a computer 
* In the default setting, the AUDIO IN port is the audio port for the RGB IN, and the 
AUDIO IN port is the audio port for the RGB IN ports. To change the settings, refer to the 
AUDIO item in the SETUP menu. (36)
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
RGB IN2
R GB OU T 
Audio outRS-3CRGB out
Stereo mini audio cable 
RGB cable
RGB in
RGB cable
Audio out
Stereo mini audio cable 
RS-3C cable
Connecting to a monitor (output)
Connecting to a speaker with amplifier (output)
USB
RGB out
RGB cable
Audio in
USB cable
Stereo mini 
audio cable  
						

							
3

Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K

Setting up
Examples of connection with a VCR/DVD player
Audio (R) out
Video out
Audio cable 
Audio/Video cable 
Audio (R) out
S-Video outS-Video cable 
Audio (R) out  
Component video out
Audio cable 
Audio (L) out
Audio (L) out
Y
CB/PB
CR/PR
Audio (L) out  
Component video cable 
* In the default setting, the AUDIO IN3 L/R port is the audio port for the VIDEO, S-VIDEO 
and COMPONENT VIDEO ports. To change the settings, refer to the AUDIO item in the 
SETUP menu. (36)
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEOS-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
GSCART cable
SCART outVideo
B
R 
						

							
4

Connecting power supply
WARNING  ►Please use extra caution when connecting the power cord, as 
incorrect or faulty connections may result in fire and/or electrical shock.
• Only use the power cord that came with the projector. If it is damaged, contact 
your dealer to newly get correct one.
• Only plug the power cord into an outlet rated for use with the powe\
r cord's 
specified voltage range.
• Never modify the power cord. Never attempt to defeat the ground con\
nection 
of the three-pronged plug.
. Connect the connector of the power cord to the AC inlet of the projector.
. Firmly plug the power cord's plug into the outlet. 
Setting up
AC inlet
Connectorof the power cord 
						

							
5

Putting batteries
WARNING  ►Always handle the batteries with care and use them only as 
directed. Battery may explode if mistreated. Do not recharge, disassembl\
e or 
dispose of in fire. 
And also improper use may result in cracking or leakage, which could res\
ult in 
fire, injury and/or pollution of the surrounding environment.
• Be sure to use only the batteries specified. Do not use batteries of different 
types at the same time. Do not mix a new battery with used one. 
• Make sure the plus and minus terminals are correctly aligned when loading a battery.
• Keep a battery away from children and pets. If swallowed consult a physi\
cian 
immediately for emergency treatment.
• Do not short circuit or solder a battery.
• Do not allow a battery in a fire or water. Keep batteries in a dark, cool and dry place. 
• If you observe a leakage of a battery, wipe out the flower and then replace a battery. 
If the liquid adheres to your body or clothes, rinse well with water immediately.
• Obey the local laws on disposing the battery.
. Remove the battery cover.  
Slide back and remove the battery cover in the direction of the arrow.
. Insert the batteries. 
 
Align and insert the two AA batteries according to their plus and minus   
terminals as indicated in the remote control.
3. Close the battery cover. 
 Replace the battery cover in the direction of the arrow and snap it back into place.
Remote control
Remote control 
						

							
6
Using the remote control
CAUTION  ►Be careful in handling the remote control.
• Do not drop or expose the remote control to physical impact.
• Do not get the remote control wet or place it on wet objects. It ma\
y result in 
malfunction.
• Remove the batteries from the remote control and store them in a safe place if 
you won’t be using the remote control for an extended period. 
• Replace the batteries whenever the remote control starts malfunctio\
ning. 
• When strong lights (such as direct sunlight) or light from an ext\
remely close 
range (such as from an inverter fluorescent lamp), hit the projector’s remote 
sensor, the remote control may cause to function. Adjust the direction of the 
projector to keep the light from directly hitting the projector’s remote sensor.
The signal settings for the remote control transmitter and the projector's remote sensor can be changed.If the remote control does not function properly try changing the signal\
 setting.
Changing the signal setting for the remote control transmitter()Setting  (FREQ. : NORMAL)Simultaneously press and hold the MUTE and RESET buttons for about 3 seconds.()Setting  (FREQ. : HIGH)Simultaneously press and hold the MAGNIFY OFF and ESC buttons for about 3 seconds.• Setting  is the factory default setting.• When the batteries are removed from the remote control, user-specified settings are saved for about half a day. If the batteries are removed from the remote control for longer than half a day, the remote will reset to Setting .
Changing the signal setting for the projector's remote sensorSwitch between Setting  and  using the SERVICE/REMOTE FREQ. item found in OPTION MENU. (43)If the remote control does not seem to function properly, try changing the settings for the remote control and the projector's remote sensor.The remote control will not function properly if the remote control tran\
smitter settings and 
the projector's remote sensor settings are not the same.
The remote control works with the projector’s remote sensor.
• The range of the remote sensor is 3 meters with a 60 degree range (30 degrees to the left and right of the remote sensor).• Also a remote signal reflected in the screen etc. may be available. If it is difficult to send a remote signal to the sensor directly, please try to use the reflected signal.•  Since  the  remote  control  uses  infrared  light  to  send  signals  to  the  projector  (Class  LED), be sure to use the remote control in an area free from obstacles that could block the remote control’s output signal to the projector.
Remote control
30º30ºapprox. 3 meters 
						

							
7
Power on/off
Power on/off
WARNING  ►When the power is on, a strong light is emitted. Do not look into 
the lens of projector. Also do not peep at the inside of projector through a hole.
NOTE  • Turn the power on/off in right order. Please power on the projector prior 
to the connected devices. Power off the projector later than the connected devices.
Turning on the power
. Make sure that the power cord is firmly and correctly connected to the projector and the outlet.
. Remove the lens cover, and set the power switch to the ON position.  The power indicator will light up in steady orange. Then wait several seconds because the buttons may not function for these several seconds. 
(1) When AUTO ON in the OPTION menu is set to TURN ON:(40)The lamp will only be automatically turned on when the Power switch is turned on after the power was turned off by Power switch last time. Afterwards the POWER indicator will begin blinking in green. When the power is completely on, the indicator will stop blinking and light in green.
(2) When AUTO ON in the OPTION menu is set to TURN OFF please see step 3.
3. Press the STANDBY/ON button on the projector or the remote control. 
To display the picture, select an input signal according to the section "Selecting an input signal" (18).
Turning off  the power
Please pay special attention to below two points when you do:
() Please do not turn the projector on again for at least 0 minute in this case. Neglect could shorten the lifetime of the lamp.() During use or immediately after use, do not touch around the lamp and\
 vents of the projector (4 ê) It could cause a burn.
. Press the STANDBY/ON button on the projector or the remote control.The message "Power off?" will appear on the screen for about 5 seconds.
. Press the STANDBY/ON button on the projector or the remote control again while the message appears. The projector lamp will go off, and the POWER indicator will begin blinking in orange. 
Then the POWER indicator will stop blinking and light in steady orange when the lamp cooling is complete.
3. Make sure that the power indicator lights in steady orange, and set 
the power switch to the OFF position. The POWER indicator will go off. Attach the lens cover.
POWER
(Steady orange)
POWER (Blinking in green)
POWER
(Steady green)
HOME PAGE UP PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE OFF ON MAGNIFY ASPECT AUTO BLANK 
MUTE VOLUME 
KEYSTONEMY BUTTONPOSITION 1 2
ESC ENTER MENU 
RESET 
STANDBY/ON button
POWER indicator
 Power off ?
POWER
(Blinking in orange)
POWER
(Steady orange) 
						

							
8

Operating
Operating
Adjusting the volume
. Press the VOLUME button on the remote control. 
A dialog will appear on the screen to aid you in adjusting the volume.
. Use the cursor buttons ▲/▼ to adjust the volume.
To close the dialog and complete the operation, press the 
VOLUME button again. Even if you don’t do anything, the 
dialog will automatically disappear after a few seconds. 
Temporarily muting the sound
. Press the MUTE button on the remote control.  
A dialog will appear on the screen indicating that you have muted the sound. 
To restore the sound, press the MUTE or VOLUME button. 
Even if you don’t do anything, the dialog will automatically 
disappear after a few seconds.
Selecting an input signal
. Press the INPUT button on the projector.  
Each time you press the button, the projector switches its 
input port as below.
             RGB IN          RGB IN  
          VIDEO  S-VIDEO  COMPONENT VIDEO
. Press the RGB button on the remote control to select an 
input port for the RGB signal. 
Each time you press the button, the projector switches its RGB 
input port as below.
RGB IN  RGB IN
● If the RGB button is pushed (when switching from VIDEO to RGB signals) 
when TURN ON is selected for the AUTO SEARCH item in the OPTION menu 
the projector will check the RGB IN1 port first. If no input is detected at the port, 
the projector will check the RGB IN port.
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET 
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET 
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET  
						

							
9

Operating
Adjusting the zoom and focus
. Use the zoom ring to adjust the screen size.  
. Use the focus ring to focus the picture.
Selecting an aspect ratio 
. Press the ASPECT button on the remote control.   
Each time you press the button, the projector switches the mode for aspe\
ct 
ratio in turn. 
 For an RGB signal
NORMAL  4:3  6:9  SMALL 
  
 For a video signal, s-video signal or component video signal
4:3  6:9  4:9  SMALL 
  
 For a no signal 
4:3 (fixed)
● The NORMAL mode keeps the original aspect ratio of the signal.
● Performing the automatic adjustment initializes the aspect ratio setting.
Searching an input signal
. Press the SEARCH button on the remote control.
The projector will start to check its input ports in order to 
find any input signals.
When an input is found, the projector will stop searching and display th\
e image. 
If no signal is found, the projector will return to the state selected b\
efore the 
operation.
RGB IN   RGB IN   COMPONENT VIDEO  S-VIDEO  VIDEO  
   
Zoom ringFocus ring
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET 
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET 
Selecting an input signal (continued)
. Press the VIDEO button on the remote control to select an 
input for video signal.  
Each time you press the button, the projector switches its 
video input port as below. 
COMPONENT VIDEO  S-VIDEO  VIDEO  
   
● If the VIDEO button is pushed (when switching from RGB to VIDEO signals) 
when TURN ON is selected for the AUTO SEARCH item in the OPTION menu 
the projector will check the COMPONENT VIDEO port first. If no input is 
detected at the port, projector will begin to check other ports in above\
 order.
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET  
						

							
0

Operating
Using the automatic adjustment feature
. Press the AUTO button on the remote control.  
 For an RGB signal 
The vertical position, the horizontal position, the horizontal 
phase and the horizontal size will be automatically adjusted. 
And the aspect ratio will be automatically set to default. Make sure tha\
t the 
application window is set to its maximum size prior to attempting to use\
 this 
feature. A dark picture may still be incorrectly adjusted. Use a bright picture 
when adjusting.
 For a video signal or s-video signal 
The video format best suited for the respective input signal will be selected 
automatically. 
This function is available only when the AUTO mode is selected to the 
VIDEO FORMAT item in the INPUT menu (33). For a component video 
signal, the signal type is identified automatically independently of this 
function. 
 For a video signal, s-video signal or component video signal 
The vertical position, horizontal position and aspect ratio will be automatically 
set to default.
 For a component video signal 
The horizontal phase will be automatically set to default.
● The automatic adjustment operation requires about 10 seconds. Also please 
note that it may not function correctly with some input.
Adjusting the position
. Press the POSITION button on the remote control. 
The “POSITION” indication will appear on the screen.
. Use the cursor buttons ▲/▼/◄/► to adjust the picture 
position.
When you want to reset the operation, press the RESET button on the remote 
control during the operation.
To complete this operation, press the POSITION button again. Even if you \
don’t 
do anything, the dialog will automatically disappear after a few seconds\
.
● When this function is performed at a video signal, a certain extra such as a line 
may appear outside a picture.
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET 
HOME PAGE UP 
PAGE DOWN END 
VIDEO RGB  SEARCH 
FREEZE 
OFF 
ON MAGNIFY 
ASPECT AUTO BLANK 
MUTE 
VOLUME 
KEYSTONEMY BUTTON
POSITION 
1 2
ESC 
ENTER 
MENU 
RESET