LG Rd Jt50 Projector User Manual

							DLP PROJECTOR
USER’S GUIDE 
Thank you for purchasing the DLPTM Projector.
Please read this user’s guide to ensure correct use of the device. Save this user’s
guide for future reference. 
OUTLINE
This DLPTM Projector can display various computer signals and NTSC/PAL/SECAM video
signals.
FEATUR ES
1. High Brightness
2. High Resolution
3. Compact Size, Feather Weight for Portability
4. RGB and DVI-D Input Terminal
5. One Touch Auto-Adjustment Function
6. Easy Keystone Adjustment 
						

							Copyright
Copyright © 2003. All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic,
optical, chemical, manual or otherwise, without the prior written permission of the
company.
Disclaimer
The company makes no representations or warranties, either expressed or implied, with
respect to the contents hereof and specifically disclaims any warranties, merchantability or
fitness for any particular purpose.  Furthermore, the company reserves the right to revise
this publication and to make changes from time to time in the contents hereof without
obligation of the company to notify any person of such revision or changes. 
						

							Table of Contents
iiiDLP Personal Projector
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
FCC Statement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
EEC STATEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
Shipping Contents  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
Optional Accessories   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
Projector Description   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
Projector  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
External Control Panel     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
Adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
Projector Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
Remote Control Description  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
Installing or Replacing Batteries (“AAA” type)  . . . . . . . . . . . . . . . . . . . . . .   9
Installation   . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Display Size   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   10
Connecting to Various Equipment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   11
Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Start Up  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   14
Digital Keystone Correction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15
Auto Adjustment   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15
Source Selection   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
Blank  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
Menu System   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   17
1. Display Menu   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18
2. Image Menu   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   19
3. Source Menu   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   20
4. Control Menu   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   21
5. PIP Menu  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   22
Shutdown  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   23
Maintenance   . . . . . . . . . . . . . . . . . . . . . . . . . .25
Lamp Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   25
Use and Replacement of the Lamp   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   25
Lamp Replacement   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   25
Operative Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   26
Troubleshooting   . . . . . . . . . . . . . . . . . . . . . . .27
Common Problems & Solutions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   27 
						

							ivDLP Personal Projector
Status Messages   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   28
Specifications  . . . . . . . . . . . . . . . . . . . . . . . . .29
Projector Specifications   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   29
Timing Chart  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   30
Suppoted timing for Analog RGB and DVI inputs  . . . . . . . . . . . . . . . . . . .   30
Supported timing for YPbPr input   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   30
Supported timing for Video and S-Video inputs  . . . . . . . . . . . . . . . . . . . .   31
Dimensions   . . . . . . . . . . . . . . . . . . . . . . . . . . .32 
						

							DLP Personal Projector1
INTRODUCTION
Caution
TO PREVENT SHOCK, DO NOT OPEN THE CABINET. NO USER –SER-
VICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE 
PERSONNEL. PLEASE READ THIS USER’S GUIDE BEFORE YOU 
OPERATE YOUR PROJECTOR. SAVE THIS USER’S GUIDE FOR 
FUTURE REFERENCE .
Safety Instructions
1. Read this user’s guide before you operate your projector and save it for 
future reference.
2. The lamp becomes extremely hot during operation. Allow the projector to 
cool for approximately 45 minutes prior to removing the lamp assembly 
for replacement. Do not operate lamps beyond the rated lamp life. 
Excessive operation of lamps beyond the rated life could cause them to 
explode on rare occasions.
3. Never replace the lamp assembly or any electronic components unless 
the projector is unplugged.
4. To reduce the risk of electric shock, do not disassemble this appliance. 
Take it to a qualified technician when service or repair is required. 
Incorrect reassembly can cause electric shock when the appliance is 
subsequently used.
5. Do not place this product on an unstable cart, stand, or table. The 
product may fall, sustaining serious damage. 
6. Do not touch the top cover when the projector is under operation.
7. The projector must be packaged into a carry bag while moving to 
another place for operation.
8. To avoid the lamp being damaged, never turn the Main Power Switch off 
in the back of the projector during operation. The normal operation 
procedures are to turn the power button off, and, after a 90-second 
cooling process, turn off the Main Power Switch. 
						

							2DLP Personal Projector
Caution
•     Always open the lens shutter when the projector lamp is on. 
• Do not look straight at the projector lens during operation. The 
intense light beam may damage your eyes.
• In some countries, the line voltage is NOT stable. This projector is 
designed to operate safely within a bandwidth of 100 to 240 volts, 
but could fail if power cuts or surges of +
 10 volts occur. In these 
high-risk areas, it is recommended that a power stabilizer unit be 
used in conjuction with this projector.
• Do not place this projector on the top of cloth or carpet.
• Do not touch the ventilation grill when the projector is under opera-
tion.
Save this user’s guide: The information contained in this manual will assist 
you in operating and maintaining your personal projector.
FCC Statement
CLASS B: 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 distance 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.
EEC STATEMENT
This machine was tested against the 89/336/EEC (European Economic 
Community) for EMC (Electro Magnetic Compatibility) and fulfills these 
requirements. 
						

							DLP Personal Projector3
Shipping Contents 
The projector is shipped with the cables required for connection to standard 
PC or laptop computers. Carefully unpack and verify that you have all the 
items shown below. If any of these items are missing, please contact 
personnel at the place of purchase.   
Optional Accessories 
1. 250W lamp module
2. Macintosh adapter
3. Ceiling mount kit
Projector User’s Guide
3-2 Converter
Remote Control Batteries
HDTV Cable Deluxe Soft Carry Case
S-Video CableVideo Cable
USB Cable VGA Cable
240V 220V 110V
Power Cord Quick Start Guide
(YPbPr)
Audio Cable
DVI-D Cable S.A. & India 
						

							4DLP Personal Projector
Projector Description 
Projector 
  
  
Video
D-SUB IN
AC INDVI-D
S-Video RS-232Audio USB
Video connector
S-Video connector Audio input
USB mouse connector
RGB (PC / Mac) / YPbPr signal input
AC power cord inlet
Main power switch
DVI-D signal inputKensington lock
Rear adjuster foot
IR remote sensor
RS232 control port
Projection lens adjusterExternal control panel 
(See External Control Panel on 
page 5 for more detailed information.)
Projection lens Front adjuster foot Ventilation grill
IR remote sensor
Lamp door
Rear adjuster footSpeaker 
						

							DLP Personal Projector5
External Control Panel    
1. Power indicator
The indicator shows green for a normal 
state. When the projector is in Standby 
mode, it shows orange toggle. See 
Operative Information on page 26 for 
more detailed information.
2. Temp indicator
The Temp indicator shows red or flashed 
red when the system temperature is too 
high or has fan problems,  which may 
occur if the projector is operated 
improperly. See Operative Information 
on page 26 for more detailed information.
3. Lamp Indicator
The Lamp Indicator will light up when the 
lamp needs service, cooling or 
replacement. See “Lamp Information” on 
page 25 and Operative Information on 
page 26 for more detailed information.
4. POWER
Press and hold the POWER key for 1 
second to turn on or off  the projector.
5. MENU / EXIT
Brings the OSD menu or leaves the OSD 
menu.
6. SOURCE
Selects signal sources from among 
Analog RGB, DVI, YP
bPr, S-Video and 
Composite Video.
7. AUTO
Automatically determines the suitable 
frequency and clock for current received 
signals. The auto adjustment function will 
not affect the current brightness and 
colors settings.
8. BLANK
Uses BLANK to hide the screen image. 
You can press BLANK again or RETURN 
to bring the image back. 
When this function is activated, the sound 
will not stop, unless you press MUTE.
9. KEYSTONE - 10. KEYSTONE + 
Presses KEYSTONE - to correct a image 
that is wider at the top. Presses 
KEYSTONE + to correct a image that is 
wider at the bottom. 
9. Left < 10. Right > 
11. Up ^ 12. Down v
When the On-Screen Menu system is 
activated, the four buttons help you 
navigate among choices and settings in 
the menus and sub-menus.
AUTO BLANKSOURCE
KEYSTONE 
-KEYSTONE +
POWER
MENU/EXIT
2. Temp Indicator
3. Lamp Indicator
4. POWER
5. MENU / EXIT
9. KEYSTONE - / Left
10.KEYSTONE + / Right
6. SOURCE
8. BLANK 11 .  U p
7. AUTO
12. DOWN1. Power Indicator 
						

							6DLP Personal Projector
Adjuster
The projector is equipped with 1 quick-release adjuster foot. Push the button 
to adjust its tilt angle.
1. Lift the projector up and press the adjuster button to release the 
adjuster.  The adjuster will drop into position and be locked.
2.  Screw the rear adjuster to fine-tune the tilt angle.
Note: The adjuster can only bear the weight of the projector itself . 
Please do not place any additional burden on it. 
Projector Features
The projector integrates high-performance optical engine projection and a 
user-friendly design to deliver high reliability and ease of use.
The projector offers the following features:
• Small and light for portability.
• Full-function remote control with laser pointer/ remote mouse function.
• High quality manual zoom lens.
• One-key auto-adjustment to display the best picture quality in PC mode.
• Easy digital keystone correction through hot keys to correct distorted 
images.
• High resolution.
• Ultra-high brightness projection lamp.
• Ability to display 16.7 million colors.
• On-screen menus in 8 languages: English, French, German, Italian, 
Spanish, Korean,  Simplified Chinese, and Traditional Chinese.
• Powerful AV function to provide high quality AV picture.
• HDTV compatibility (YPbPr).
• RGB and DVI-D input terminal
Note: The brightness of the projected image will vary depending on the 
ambient lighting conditions and contrast/brightness settings.
1.2