LG Dx420 User Manual

							
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Bottom view 
 
ITEM LABEL DESCRIPTION SEE PAGE: 
1.  Ceiling support holes Contact your dealer for information on mounting the projector on a ceiling 
2.  Tilt adjustor  Rotate adjuster lever to adjust angle position.  15
3.  Lamp cover Remove when changing the lamp. 34
4.  Height adjustor Adjuster drops down  when adjuster button is pushed. 
5.  Height adjustor button Push to release adjustor. 
15
 
Note: 
When installing, ensure that you us e only UL Listed ceiling mounts. 
 
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Remote Control Parts 
 
Important: 
1.  Avoid using the projector with bright fluoresc ent lighting turned on. Certain high-frequency fluo-
rescent lights can disrupt remote control operation. 
 
2. Be sure nothing obstructs the path between the re mote control and the projector. If the path be-
tween the remote control and the projector is obstructed, you can bounce the signal off certain 
reflective surfaces such as projector screens. 
 
3. The buttons and keys on the projector have the  same functions as the corresponding buttons on 
the remote control. This user’s manual descri bes the functions based on the remote control. 
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ITEM LABEL DESCRIPTION SEE PAGE: 
1.  Up cursor Navigates and changes settings in the OSD   
2.  Enter Changes settings in the OSD 
18
3.  Power Turns the projector On or Off 11
4.  Right cursor Navigates and changes settings in the OSD 18
5.  Volume + Increase volume 
6.  Volume - Decrease volume 
17
7.  Mute Mutes the built-in speaker 
8.  Freeze Freeze/unfreezes the on-screen picture 
9.  Source Detects the input device 10
10.  Auto Auto adjustment for frequency, tracking, size, position (RGB only) 
11.  Keystone top Corrects image-tr apezoid (wider top) effect 
12.  Keystone bottom Corrects image trapezoid (wider bottom) effect 
16
13.  Down cursor Navigates and changes settings in the OSD 
14.  Left cursor Navigates and changes settings in the OSD 
15.  Menu Opens the OSD  
18
 
 
 
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Remote Control Operating Range 
The remote control uses infrared transmission to cont rol the projector. It is not necessary to point the 
remote directly at the projector. Provided you are not holding the remote perpendicular to the sides or 
the rear of the projector, the re mote will function well within a radi us of about 7 meters (23 feet) and 
15 degrees above or below the projector level. If the pr ojector does not respond to the remote control, 
move a little closer.   
Projector and Remote Control Buttons 
The projector can be operated using t he remote control or the buttons on the top of the projector. All 
operations can be carried out with the remote cont rol; however, the buttons on the projector are lim-
ited in use. The following illustration shows the corresponding buttons on the remote control and on 
the projector. 
Remote Control 
 
Some buttons on the projector have  multiple functions. For example, item 6/7 on the projector func-
tions as the keystone button  and as the down cursor key. 
 
 
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SETUP AND OPERATION 
Inserting the Remote  Control Batteries  
1.  Remove the battery compartment cover 
by sliding the cover in the direction of 
the arrow  (A). Pull out the cover (B). 
 
2.  Insert the battery with the positive side 
facing up. 
 
3.  Replace the cover. 
 
 
Caution:  
1. Only use a 3V lithium battery (CR2025). 
 
2. Dispose of used batteries accordi ng to local ordinance regulations.  
 
3. Remove the battery when not using  the projector for prolonged periods. 
 
 
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Connecting Input Devices 
A PC or notebook computer and video devices can be connected to the projector at the same time. Video 
devices include DVD, VCD, and VHS players, as we ll as movie camcorders and digital still cameras. 
Check the user manual of the connecting device to  confirm it has the appropriate output connector.  
 
ITEM LABEL DESCRIPTION 
A 
USB (Service Only) Connect the USB CABLE from a computer (service only). 
B 
S-VIDEO Connect the S-VIDEO CABLE from a video device. 
C 
VIDEO Connect the VIDEO CABLE from a video device. 
D 
AUDIO-IN Connect the AUDIO CABLE from the  computer’s audio-out connector. 
Connect the AUDIO CABLE (mini jack-to-RCA x 2) from a video device.  
E RGB 
Connect the RGB CABLE from a computer. 
Connect DVD input YCbCr / YPbPr, through optional RGB to 
COMPONENT ADAPTOR. 
 
Warning: 
As a safety precaution, disconnect all power to  the projector and connecting devices before making 
connections. 
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Starting and Shutting  down the Projector 
1.  Connect the power cord to the projector. 
Connect the other end to a wall outlet. 
The 
 POWER  and READY  LEDs 
on the projector light. 
2.   Turn on the connected devices. 
 
3.  Ensure the READY LED displays a 
solid orange and not a flashing orange. 
Then press the 
 POWER  button to 
turn on the projector.  
 
The projector splash screen displays and 
connected devices are detected. 
 
See 
Setting an Access Password 
(Security Lock)
 on page 13 if security 
lock is enabled. 
 
4.   If more than one input device is con-
nected, press the SOURCE  button and 
use  ▲▼  to scroll among devices. 
(Component is supported through the 
RGB to COMPONENT ADAPTER.) 
 
 
•   RGB: Analog RGB 
Component: DVD input YCbCr / YPbPr, or 
HDTV input YPbPr via HD15 connector 
•  Composite Video: Traditional composite video 
• S-Video: Super video (Y/C separated) 
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5.   When the “Power Off? /Press Power 
again” message appears, press the 
POWER  button. The projector turns 
off. 
 
Caution: 
1. Be sure to remove the lens  cap before starting projector.  
2. Do not unplug the power cord until the READY  LED stops flashing–indicating the projector has 
cooled down. 
 
 
 
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Setting an Access Password (Security Lock) 
You can use the four (arrow) buttons to set a password and prevent un authorized use of the projector. 
When enabled, the password must be entered after you power on the projector. (See 
Navigating the 
OSD
 on page 18 and Setting the OSD Language on page 19 for help on using OSD menus.) 
Important: 
Keep the password in a safe place.  Without the password, you will not be able to use the projector. 
If you lose the password, contact your reselle r for information on clearing the password. 
 
1.  Press the  MENU button to open the OSD 
menu. 
2.   Press the cursor  ◄► button to move to 
the  Installation I  menu. 
 
3.  Press the cursor  ▲▼ button to select  
Security Lock . 
4.  Press the cursor  ◄► button to enable or 
disable security lock function. 
A password dialog box automatically  
appears. 
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5.   You can use the cursor buttons  ▲▼◄► 
either on keypad or IR remote control for 
password entry. You can use any 
combination including the same arrow five 
times, but not less than five. 
Press the cursor buttons in any order to set 
the password. Push the  MENU button to 
exit the  dialog box. 
 
 
6.   The password confirm menu appears when 
user presses the power-on key in case the 
Security Lock  is enabled.  
Enter the password in the order you set it 
at step 5. In case you forget the password, 
please contact the service center.  
Service center will validate the owner and 
help reset the password.  
 
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