Hitachi CP-CX251N User Manual

Projector

CP-CX251N

User's Manual (concise)

Thank you for purchasing this projector.

Please read through this manual before using this product, in order to use safely
and utilize well the product.

WARNING ►Before using this product, be sure to read all manuals for this
product. See the “Using the CD manual” (17) to read the manuals in the CD.
After reading them, store them in a safe place for future reference.

►Heed all the warnings and cautions in the manuals or on the product.
►Follow all the instructions in the manuals or on the product.

NOTE • In this manual, unless any comments are accompanied, “the

manuals” means all the documents provided with this product, and “the product”

means this projector and all the accessories came with the projector.

Contents



First of all ............................................ 2

Entries and graphical symbols explanation ......2

Important safety instruction ..............................2

Regulatory notices .............................. 3

About Electro-Magnetic Interference ................

About Waste Electrical and Electronic Equipment

Contents of package........................... 4

Arrangement ....................................... 5

Connecting with your devices ............. 6

Connecting power supply ................... 7

Preparing for the remote control ......... 8

Turning on the power .......................... 9

Adjusting the projector's elevator ..... 10

Displaying the picture ....................... 11

Turning off the power ........................ 12

Replacing the lamp ........................... 13

3

Cleaning and replacing the air lter .. 15

...4

Replacing the internal clock battery.. 16

Using the CD manual ....................... 17

Specications ................................... 18

Troubleshooting

- Warranty and after-service ........... 19

ENGLISH



1

First of all

Entries and graphical symbols explanation

The following entries and graphical symbols are used for the manuals and the
product as follows, for safety purpose. Please know their meanings beforehand,
and heed them.

WARNING

CAUTION This entry warns of a risk of personal injury or physical damage.

NOTICE This entry notices of fear of causing trouble.

Important safety instruction

The followings are important instructions for safely using the product. Be sure to

follow them always when handling the product. The manufacturer assumes no
responsibility for any damage caused by mishandling that is beyond normal usage

dened in these manuals of this projector.

WARNING ►Never use the product in or after an abnormality (ex. giving
off smoke, smelling strange, took a liquid or an object inside, broken, etc.) If an
abnormality should occur, unplug the projector urgently.

►Situate the product away from children and pets.
►Do not use the product when there is fear of a thunderbolt.
►Unplug the projector from the power outlet if the projector is not used for the

time being.

►Do not open or remove any portion of the product, unless the manuals direct
it. For internal maintenance, leave it to your dealer or their service personnel.
►Use only the accessories specied or recommended by the manufacturer.
►Do not modify the projector or accessories.
►Do not let any things or any liquids enter to the inside of the product.
►Do not wet the product.
►

Do not place the projector where any oils, such as cooking or machine oil, are used.
Oil may harm the product, resulting in malfunction, or falling from the mounted
position.
►Do not apply a shock or pressure to this product.

- Do not place the product on an unstable place such as the uneven surface or

the leaned table.

- Do not place the product unstably. Place the projector so that it does not

protrude from the surface where the projector is placed on.

- Remove all the attachments including the power cord and cables, from the

projector when carrying the projector.

►

Do not look into the lens and the openings on the projector, while the lamp is on,
since the projection ray may cause a trouble on your eyes.
►Do not approach the lamp cover and the exhaust vents, while the projection
lamp is on. Also after the lamp goes out, do not approach them for a while, since
too hot.

This entry warns of a risk of serious personal injury or even death.

2

Regulatory notices

About Electro-Magnetic Interference

In CANADA

CAN ICES-3(B) / NMB-3(B).

In the US, and other places where the FCC regulations are applicable
Declaration of Conformity

Trade name HITACHI
Model Number

Responsible Party Hitachi America, Ltd.
Address 2420 Fenton Street, Suite 200 Chula Vista, CA 91914

Telephone Number [phone]

This device complies with part 15 of the FCC Rules. Operation is subject

to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.This equipment has

been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

CP-CX251N

U.S.A.

ENGLISH

INSTRUCTIONS TO USERS: This equipment complies with the requirements of

FCC (Federal Communication Commission) equipment provided that the following

conditions are met. Some cables have to be used with the core set. Use the

accessory cable or a designated-type cable for the connection. For cables that

have a core only at one end, connect the core to the projector.

CAUTION: Changes or modications not expressly approved by the party

responsible for compliance could void the user’s authority to operate the
equipment.

3

Regulatory notices (continued)

About Waste Electrical and Electronic Equipment

The mark is in compliance with the Waste Electrical and Electronic

Equipment Directive 2002/96/EC (WEEE).

The mark indicates the requirement NOT to dispose the equipment
including any spent or discarded batteries or accumulators as unsorted
municipal waste, but use the return and collection systems available.
If the batteries or accumulators included with this equipment, display
the chemical symbol Hg, Cd, or Pb, then it means that the battery has a
heavy metal content of more than 0.0005% Mercury or more than, 0.002%
Cadmium, or more than 0.004% Lead.

Contents of package

Your projector should come with the items
shown below. Check that all the items are
included. Require of your dealer immediately if
any items are missing.

(1) Remote control with the two AA batteries
(2) Power cord

(2)

(1)

MY SOURCE/

VIDEO

COMPUTER

DOC.CAMERA

ASPECT

AUTO

SEARCH

BLANK

FREEZE

MAGNIFY

PAGE

VOLUME

UP

ON

＋

DOWN

OFF

ー

MY BUTTON

MUTE

KEYSTONE

2

1

MENU

POSITION

ENTER

ESC

RESET

(4)

(5)

(3) Computer cable
(4) Lens cover and Strap

(5) User’s manuals (Book x1, CD x1)

(3)

(6)

(6) Security label

WARNING ►Do not attempt to install the projector yourself. Have your
dealer or service center handle all installation work. Note that manufacturer will
accept no liability whatsoever for accidents or injuries resulting from an incorrect
installation or improper use.

NOTE • Keep the original packing materials for future reshipment. Be sure

to use the original packing materials when moving the projector. Use special
caution for the lens.

4

Arrangement

Refer to table T-1 and gures F-1 and F-2 at the end of this manual to determine the
screen size and projection distance.

The values shown in the table are calculated for a full size screen.

V Screen size (vertical) H Screen size (horizontal)

b1

, b2 Screen height (±8%)

• For the case of installation in a special state such as ceiling mount, the specied

mounting accessories (18) and service may be required. Before installing the
projector, consult your dealer about your installation.

• The screen position may shift after installation if the projector is suspended from the
ceiling or other location due to the exibility of the plastic projector body. If readjustment is

necessary, consult with your dealer or service personnel.

• The projected image position and/or focus may change during warm-up (approx. 30

minutes after the lamp is turned on) or when the ambient conditions change. Readjust

the image position and/or focus as necessary.

• Since the projector features a short throw, be aware that it is required to select a screen

carefully to have better performance.

- A soft screen such as a pull-down screen may cause serious distortion of a projected
image. A hard screen such as a board screen is recommended for use with this projector.

- A high-gain screen such as a bead screen that has narrow viewing angle is not suitable
for this projector. A low-gain screen (around 1.0) such as a matte screen that has wide
viewing angle is recommended for use with this projector.

-

A screen with a weave pattern may cause moiré on the projected image, which is not a failure

of the projector. A screen that has less moiré effects is recommended for use with this projector.

a Projection distance (±8%)

WARNING ►Install the projector in a stable horizontal position.
►Place the projector in a cool place, and ensure that there is sufcient ventilation.
Keep a space of 30 cm or more between the sides of the projector and other objects

such as walls. Do not place or attach anything that would block the lens or vent
holes. Do not place the projector where the air from an air conditioner or similar unit
will blow on it directly.

►Do not place the projector anyplace where it may get wet.

Use only the mounting accessories the manufacturer specied, and leave installing

►

and removing the projector with the mounting accessories to the service personnel.

►Read and keep the user's manual of the mounting accessories used.

CAUTION ►Avoid placing the projector in smoky, humid or dusty place.

Position the projector to prevent light from directly hitting the projector’s remote sensor.

►
►If the projector is used at an altitude of about 1600 m or higher, set ALTITUDE of
the SERVICE item in the OPTION menu to HIGH. Otherwise, set it to NORMAL.

If the projector is used with a wrong setting, it may cause damage to the projector
itself or the parts inside.

ENGLISH

•

NOTE

The projector may make a rattling sound when tilted, moved or shaken,

since a ap to control the air ow inside of the projector has moved. Be aware that

this is not a failure or malfunction.

5

Connecting with your devices

Be sure to read the manuals for devices before connecting them to the projector.

Make sure that all the devices are suitable to be connected with this product, and
prepare the cables required to connect. Refer to gures F-3 to F-5 at the back of
this manual.

For details, please see “User's Manual” - “Operating Guide” and “Network Guide”.

• When AUTO is selected for the COMPUTER IN1 or COMPUTER IN2 port in

COMPUTER IN of the INPUT menu, that port will accept component video signals.

• To use network functions of the projector, connect the LAN port with the

computer's LAN port, or with an access point that is connected to the computer
with wireless LAN, using a LAN cable.

WARNING ►Use only the appropriate accessories. Otherwise it could

cause a re or damage to the device and the projector.

- Use only the accessories specied or recommended by the projector’s

manufacturer. Consult your dealer when the required accessory did not come
with the product or the accessory is damaged. It may be regulated under some
standard.

- For a cable with a core at only one end, connect the end with the core to the

projector. That may be required by EMI regulations.

- Neither disassemble nor modify the projector and the accessories.

- Do not use the damaged accessory. Be careful not to damage the

accessories. Route a cable so that it is neither stepped on nor pinched out.

CAUTION ►For a cable with a core at only one end, connect the end with

the core to the projector. That may be required by EMI regulations.

►Do not turn on or off the projector while connected to a device in operation,

unless that is directed in the manual of the device.

►Be careful not to mistakenly connect a connector to a wrong port.
►Before connecting the projector to a network, be sure to obtain the consent of

the administrator of the network.
►Do not connect the LAN port to any network that might have the excessive
voltage.

NOTICE ►Use the cables with straight plugs, not L-shaped ones, as the input
ports of the projector are recessed.

NOTE •

specic adapter or the specic cable is required for a component video input to the

projector.

The COMPUTER IN1/2 port can support a component signal also. The

6