Hitachi Cp-X251 Projector Users Manual


Projector
CP-X251
User's Manual – Operating Guide
Thank you for purchasing this projector.
WARNING  ►Before using this product, please read the "User's Manual - 
Safety Guide" and related manuals to ensure the proper use of this produ\
ct. 
After reading them, store them in a safe place for future reference.
About this manual
Various symbols are used in this manual. The meanings of these symbols are 
described below. 
WARNING This  symbol  indicates  information  that,  if...



About this manual  .  .  .  .  .  .  .  .  .  .1
Content  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .2
Projector features   .  .  .  .  .  .  .  .  .  .3
Preparations   .  .  .  .  .  .  .  .  .  .  .  .  .  .3 
About contents of package . . . . . . . .3 
Fastening the lens cover . . . . . . . . . .3
Part names  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .4 
Projector . . . . . . . . . . . . . . . . . . . . . .4 
Control buttons . . . . . . . . . . . . . . . . .6 
Remote control . . . . ....

3

Fastening the lens cover
To avoid losing the lens cover, please fasten it the lens cap to the projector using 
the strap.
. Fix the strap to the strap ring of the lens cover.
. 
Put the strap into the groove on the rivet.
3. 
Push the rivet into the strap hole.
Projector features / Preparations
Projector features
This projector is used to project various computer signals as well as NT\
SC/PAL/
SECAM, Component (SD, HD) video signals onto a screen. It requires jus\
t a little 
space for...

4

Part names
Part names
Lens (17) 
Filter cover (52)(Air filter and intake vent are inside.)
Elevator button (9) 
Elevator foot (9) 
Remote sensor (16)
Zoom ring (19)
Focus ring (19)
Vent (7)
Projector
Lamp cover (51) (Lamp unit is inside.) 
Bottom side
Speaker
Lens cover (3) 
Security bar (10)(Use for attaching a commercial anti-theft chain or wire.)
Control buttons (6)
WARNING  ►During use or immediately after use, do not touch around the 
lamp and vents of the projector. (ê) It could...

5

Y R 
L 
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEO S-VIDEO 
CB/PB 
CR/PR CONTROL
RGB IN2RGB IN1
K

AC inlet (14)
Power switch (17)
Elevator button (9) 
COMPONENT VIDEO ports (13)YCB/PBCR/PR
S-VIDEO port (13)
VIDEO port (13)
CONTROL port (12)
Elevator foot (9) 
Rear-Left side
Ports (See below.)
Vent (7)
AUDIO OUT port (12)
Ports
AUDIO IN port (12)(In the default setting, the AUDIO IN port is the audio port for the RGB IN port, however, it is possible to change...

6

SEARCH button (19)
RGB button (18)
VIDEO button (19)
ASPECT button (19)
HOME button (23)
MAGNIFY
 ON button (21)
 OFF button (21)
END button (23)
FREEZE button (22)
POSITION button (20)
ESC button (23)
Part names
Remote control
Battery cover (15)
(on the back)
STANDBY/ON button (17)
AUTO button (20)
BLANK button (22)
PAGE UP button (23)
VOLUME button (18)
MUTE button (18)
PAGE DOWN button (23)
KEYSTONE button (21)
MY BUTTON button (41)
MENU button (24)
Cursor buttons
▲,▼,◄,►...

7

Setting up
Setting up
WARNING  ►Place the projector in a stable position horizontally. A fall or 
a turnover could cause an injury and/or damage to the projector. Then using 
damaged projector could result in a fire and/or an electric shock.
•  Do not place the projector on an unstable, slant or vibrant surface such\
 as a 
wobbly or inclined stand.
•   Do not place the projector in the side/front/rear-up position, except cl\
eaning 
the air filter. 
►Place the projector in a cool place, and pay...

8

Arrangement
Refer to the illustrations and tables below to determine the screen size and projection distance.
The values shown in the table are calculated for a full size screen: 04×768 (a) The screen size (diagonal)(b) Distance from the projector to the screen (±0%)(c) The height of the screen (±0%)
Setting up
4:3
(a)
6:9
(a)
(a) Screen size[inch (m)]
4 : 3 screen6 : 9 screen(b) Projection distance  [m (inch)](c) Screen height[cm (inch)](b) Projection distance  [m...

9

Adjusting the projector's elevator
CAUTION  ►If you press the elevator button without holding the projector, 
the projector might crash down, overturn, smash your fingers and possibly 
result in malfunction. To prevent damaging the projector and injuring yourself, 
always hold the projector whenever using the elevator buttons to adjust \
the 
elevator feet.
►Do not incline the projector rightward or leftward. Also do not incline it 
backward or forward exceeding 30 degrees. Exceeding these range...

0

Setting up
Using the Security Bar
WARNING  ►Do not use the security bar to prevent the projector from 
falling. Dropping or knocking over the projector may cause damage or inj\
ury.
A commercial anti-theft chain or wire can be attached to the security bar\
 on the 
projector. 
. How to attach 
An anti-theft chain or wire can be 
attached as shown in the illustration. 
(Anti-theft chains or wires of up to 
0mm in diameter can be used)
Anti-theft chain or wire[sold separately]
Security...