LG Dx420 User Manual

							
Copyright  
This publication, including all photographs, illustrations and software, is protected under international copy-
right laws, with all rights reserved. Neither this man ual, nor any of the material contained herein, may be 
reproduced without written consent of the author. 
© Copyright March, 2008 
Disclaimer 
The information in this document is subject to change without notice. The manufacturer makes no repre-
sentations or warranties with respect to the cont ents hereof and specifically disclaims any implied 
warranties of merchantability or fit ness for any particular purpose. The  manufacturer reserves the right to 
revise this publication and to make changes from time  to time in the content hereof without obligation of 
the manufacturer to notify any person of such revision or changes. 
Trademark Recognition 
Kensington is a U.S. registered trademark of ACCO  Brand Corporation with issued registrations and pend-
ing applications in other countries throughout the world. 
All other product names used in this manual are t he properties of their respective owners and are ac-
knowledged. 
—  i — 
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—  ii — 
Important Safety Information 
Important: 
It is strongly recommended that you read this sect ion carefully before using the projector. These 
safety and usage instructions will ensure that you enj oy many years of safe use of the projector. 
Keep this manual for future reference. 
Symbols Used 
Warning symbols are used on the unit and in this ma nual to alert you of hazardous situations.  
The following styles are used in this manual to alert you to important information. 
Note: 
Provides additional information on the topic at hand. 
 
Important: 
Provides additional information that should not be overlooked. 
 
Caution: 
Alerts you to situations that may damage the unit.  
 
Warning: 
Alerts you to situations that may damage the unit, create a  hazardous environment, or cause per-
sonal injury.  
Throughout this manual, component parts and items in  the OSD menus are denoted in bold font as in this 
example:  
“Push the  Menu button on the remote control to open the  Main menu.”  
General Safety Information 
¾  Do not open the unit case. Aside from the projec tion lamp, there are no user-serviceable parts in 
the unit. For servicing, contac t qualified service personnel. 
¾  Follow all warnings and cautions in this manual and on the unit case. 
¾  The projection lamp is extremely bright by desig n. To avoid damage to eyes, do not look into the 
lens when the lamp is on.  
¾   Do not place the unit on an unstable surface, cart, or stand. 
¾  Avoid using the system near water, in direct sunlight, or near a heating device. 
¾  Do not place heavy objects such as books or bags on the unit. 
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–  iii  – 
Power Safety 
¾   Only use the supplied power cord. 
¾  Do not place anything on the powe r cord. Place the power cord where it will not be in the way of 
foot traffic. 
¾   Remove the batteries from the remote control when storing or not in use for a prolonged period. 
Replacing the Lamp 
Replacing the lamp can be hazardous if done incorrectly. See Replacing the Projection Lamp on page 34 
for clear and safe instructions for this procedure. Before replacing the lamp: 
¾   Unplug the power cord. 
¾  Allow the lamp to cool for about one hour. 
Cleaning the Projector 
¾  Unplug the power cord before cleaning. See Cleaning the Projector on page 37. 
¾  Allow the lamp to cool for about one hour. 
Regulatory Warnings 
Before installing and using the projector,  read the regulatory notices in the Regulatory Compliance section 
on page 
48. 
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—  iv — 
Main Features 
•  Lightweight unit, easy to pack away and transport. 
•  Compatible with all major video standards including NTSC, PAL, and SECAM. 
•  A high brightness rating allows for presentations in daylight or in lit rooms. 
•  Supports resolutions up to SXGA at 16.7 million colors to deliver crisp, clear images. 
•  Flexible setup allows for front, rear projections. 
•  Line-of-vision projections remain square, with advanced keystone correction for angled 
projections. 
•  Input source automatically detected. 
About this manual 
This manual is intended for end users and describes how to install and operate the DLP projector. Wher-
ever possible, relevant information—such as  an illustration and its description—has been kept on one 
page. This printer-friendly format is both for your  convenience and to help save paper, thereby protecting 
the environment. It is suggested that you only prin t sections that are relevant to your needs. 
 
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–  v  – 
Table of Contents 
GETTING STARTED ........................................................................\
.................................................................................. 1 
PACKING CHECKLIST........................................................................\
................................................................................... 1 
VIEWS OF PROJECTOR PARTS........................................................................\
....................................................................... 2 
DS420/DX420 Front-right View ........................................................................\
............................................................. 2 
Top view—On-screen Display (OSD) buttons and LEDs ........................................................................\
....................... 3 
Rear view........................................................................\
................................................................................................ 4 
Bottom view ........................................................................\
............................................................................................. 5 
REMOTE CONTROL PARTS........................................................................\
........................................................................... 6 
REMOTE CONTROL OPERATING RANGE........................................................................\
....................................................... 8 
PROJECTOR AND REMOTE CONTROL BUTTONS........................................................................\
............................................ 8 
Remote Control........................................................................\
....................................................................................... 8 
SETUP AND OPERATION ........................................................................\
......................................................................... 9 
INSERTING THE REMOTE CONTROL BATTERIES........................................................................\
........................................... 9 
CONNECTING INPUT DEVICES........................................................................\
.................................................................... 10 
STARTING AND SHUTTING DOWN THE PROJECTOR........................................................................\
..................................... 11 
SETTING AN ACCESS PASSWORD (SECURITY LOCK)........................................................................\
.................................. 13 
ADJUSTING THE PROJECTOR LEVEL........................................................................\
........................................................... 15 
ADJUSTING THE ZOOM, FOCUS AND KEYSTONE........................................................................\
........................................ 16 
ADJUSTING THE VOLUME........................................................................\
.......................................................................... 17 
ON-SCREEN DISPLAY (O SD) MENU SETTINGS........................................................................\
............................... 18 
OSD MENU CONTROLS........................................................................\
............................................................................. 18 
Navigating the OSD........................................................................\
.............................................................................. 18 
SETTING THE OSD LANGUAGE........................................................................\
.................................................................. 19 
OSD MENU OVERVIEW........................................................................\
............................................................................. 20 
OSD SUB-MENU OVERVIEW........................................................................\
..................................................................... 21 
IMAGE MENU........................................................................\
............................................................................................. 22 
Advanced1 Feature........................................................................\
............................................................................... 23 
Color Manager........................................................................\
...................................................................................... 24 
COMPUTER MENU........................................................................\
...................................................................................... 25 U
VIDEO/AUDIO MENU........................................................................\
................................................................................. 26 
Audio........................................................................\
..................................................................................................... 27 
INSTALLATION I MENU........................................................................\
.............................................................................. 28 
INSTALLATION II MENU........................................................................\
............................................................................. 29 
Advanced2 Feature ........................................................................\
............................................................................... 30 
OSD Menu Setting........................................................................\
................................................................................. 31 
Peripheral Test........................................................................\
...................................................................................... 31 
Lamp Hour Reset ........................................................................\
.................................................................................. 32 
Factory Reset........................................................................\
........................................................................................ 33 
Status........................................................................\
..................................................................................................... 33 
MAINTENANCE AND SECURITY ........................................................................\
......................................................... 34 
REPLACING THE PROJECTION LAMP........................................................................\
........................................................... 34 
Resetting the Lamp........................................................................\
................................................................................ 36 
CLEANING THE PROJECTOR........................................................................\
........................................................................ 37 
Cleaning the Lens........................................................................\
................................................................................. 37 
Cleaning the Case........................................................................\
................................................................................. 37 
USING THE KENSINGTON® LOCK........................................................................\
............................................................... 38 
TROUBLESHOOTING ........................................................................\
............................................................................. 39 
COMMON PROBLEMS AND SOLUTIONS........................................................................\
....................................................... 39 
TIPS FOR TROUBLESHOOTING........................................................................\
.................................................................... 39 
LED ERROR MESSAGES........................................................................\
............................................................................. 40 
IMAGE PROBLEMS........................................................................\
...................................................................................... 40 
LAMP PROBLEMS........................................................................\
....................................................................................... 41 
REMOTE CONTROL PROBLEMS........................................................................\
.................................................................. 41 
AUDIO PROBLEMS........................................................................\
..................................................................................... 41 
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—  vi — 
HAVING THE PROJECTOR SERVICED........................................................................\
....................................................... ... 41 
SPECIFICATIONS........................................................................\
......................................... ............................................ 42 
SPECIFICATIONS........................................................................\
......................................................................................... 42 
Input Connectors........................................................................\
....................................... ............................................ 42 
PROJECTION DISTANCE VS. PROJECTION SIZE........................................................................\
............................................ 43 
DS420 Projection Distance and Size Table ........................................................................\
............... ........................... 43 
DX420 Projection Distance and Size Table ........................................................................\
............... ........................... 43 
DS420 TIMING MODE TABLE........................................................................\
....................................................... ............. 44 
DX420 TIMING MODE TABLE........................................................................\
.................................................................... 45 
PROJECTOR DIMENSIONS........................................................................\
........................................................................... 47 
REGULATORY COMPLIANCE ........................................................................\
.................................. ........................... 48 
FCC WARNING........................................................................\
.......................................................................................... 48 
CANADA........................................................................\
.................................................................................................... 48 
SAFETY CERTIFICATIONS........................................................................\
........................................................................... 48 
EN 55022 WARNING........................................................................\
................................................................................. 48 
 
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–  1 –  
GETTING STARTED 
Packing Checklist 
Carefully unpack the projector and che ck that the following items are included:   
  
DS420 DLP PROJECTOR DX420 DLP PROJECTOR  
 
     
REMOTE CONTROL  
(
WITH ONE 3V CR2025 
BATTERY
) 
RGB CABLE POWER CORD AUDIO CABLE 
(
OPTIONAL) 
COMPONENT CABLE 
(
OPTIONAL) 
 
    
 
VIDEO CABLE 
(
OPTIONAL) 
S-VIDEO CABLE 
(
OPTIONAL) 
RGB TO COMPONENT 
ADAPTER 
(OPTIONAL) 
CARRYING CASE CD-ROM  
(T
HIS USER’S MANUAL) 
Contact your dealer immediately if any items are mi ssing, appear damaged, or if the unit does not work. It 
is recommend that you keep the original packing mate rial should you ever need to return the equipment 
for warranty service. 
Caution: 
Avoid using the projecto r in dusty environments. 
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Views of Projector Parts  
DS420/DX420 Front-right View 
  
ITEM LABEL DESCRIPTION SEE PAGE: 
1.  IR receiver Receiver for IR  signal from remote control 6
2.  Height-adjuster button Push to release height adjuster 
3.  Height adjuster Adjusts level of projector 
15
4.  Lens cap Covers lens to protect when not in use 
5.  Lens Remove lens cap before use 
6.  Focus ring Focuses the projected image 
7.  Zoom ring  
(DX Series only) Enlarges the projected image 
16
8.  Function keys See Top view—On-screen Display (OSD) buttons and 
LEDs
. 3
Important: 
Ventilation openings on the projector  allow for good air circulation, which keeps the projector lamp 
cool. Do not obstruct any of the ventilation openings. 
– 2 – 
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Top view—On-screen Display (OSD) buttons and LEDs 
 
ITEM LABEL DESCRIPTION SEE 
PAGE: 
1.    (POWER) Turns the projector On or Off  11
2.  SOURCE Detects the input device 10
3.  AUTO Optimizes image size, position, and resolution 
4.  ▲
 (Up cursor) / 
KEYSTONE Navigates and changes settings in the OSD 
Quick Menu – For Keystone 
5.  ►  (Right cursor) / VOL. Navigates and changes settings in the OSD 
Quick Menu – For Volume 
18
On System over temperature 6.  OVER TEMP LED Off Normal State 
Orange Lamp is ready to be powered-on. 
7.  READY LED Flashing Lamp not ready (Warm-up/shutting down/cooling)  
(see 
LED Error Messages on page 40) 
Green  Power On  
Off  Power Off (AC Off) 8.  POWER LED 
Flashing Error code 
9.  ▼ (Down cursor) / 
KEYSTONE Navigates and changes settings in the OSD 
Quick Menu – For Keystone 
10.  MENU Open and exits the OSD buttons 
11.  ◄  (Left cursor) / VOL Navigates and changes settings in the OSD 
Quick Menu – For Volume 
18
– 3 –  
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Rear view 
 
ITEM LABEL DESCRIPTION SEE PAGE: 
1.  AC IN Connect the POWER CABLE 11
2.  USB (Service Only) Connect the USB CABLE fro m a computer (service 
only) 
3.  S-VIDEO Connect the S-VIDEO CABLE from a video device 
4.  VIDEO  Connect the VIDEO CABLE from a video device  
5.  AUDIO-IN Connect the AUDIO CABLE from the input device  
6.  RGB/COMPONENT Connect the RGB CABLE fro m a computer and compo-
nents 
10
7.   (Security Lock) Secure to permanent object  with a Kensington® Lock 
system 38
 
Note: 
If your video equipment has both S-VIDEO and RCA jacks (composite video) connect to the  
S-VIDEO connector. S-VIDEO provides a better quality signal. 
– 4 – 
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