LG Rd Jt50 Projector User Manual

							DLP Personal Projector27
TROUBLESHOOTING
Common Problems & Solutions
NO POWER
Try these solutions: 
• Make sure the power cord is inserted snuged into the AC adapter socket.
• Make sure the power cord is inserted snuged into the power outlet.
• Toggle the power switch to the position “ I ”.
• Wait 90 seconds after the projector is turned off before turning the projector 
back on.
NO PICTURE
Try these solutions: 
• Check for the proper input source.
• Ensure all cables are connected properly.
• Adjust the brightness and contrast. 
• Remove the lens cap.
TRAPEZOID IMAGE ON THE SCREEN
Try these solutions: 
• Reposition the unit to improve its angle on the screen.
•Use the KEYSTONE correction key on the control panel of the projector or 
the remote control unit.
POOR COLOR
Try these solutions: 
• Select the correct video system.
• Adjust brightness, contrast, or color.
BLURRED IMAGE 
Try these solutions: 
• Press AUTO on the control panel of the projector or the remote control unit 
to get better picture quality.
• Adjust the focus. 
• Reposition the unit to improve its projection angle.
• Ensure the distance between the unit and screen is within the adjustment 
range of the lens.
REMOTE CONTROL DOES NOT WORK
Try these solutions: 
• Replace the batteries with new ones.
• Make sure there is no obstacle between the remote control and the projector.
• Stand within 6 meters (19.5 feet) of the projector.
• Make sure nothing is blocking the front and rear receivers. 
						

							28DLP Personal Projector
Status Messages    
On-Screen MessagesDescription
SEARCHINGProjector is searching for input.
ACQUIRING SIGNALProjector has identified the input signal and is 
running the auto image adjustment function.
OUT OF RANGEInput signal frequency exceeds the projector’s 
range.
LAMP WARNING - 
CHANGE LAMP AND 
RESET LAMP TIMER! The lamp has been in operation for 1400 
hours. Install a new lamp for optimal 
performance.
OUT OF LAMP USAGE 
TIME. CHANGE THE 
LAMP!The lamp has been in operation for over 1500 
hours. The warning message will display for 
30 seconds. 
						

							DLP Personal Projector29
SPECIFICATIONS
Projector Specifications 
Technical Specifications
Note: All specifications are subject to change without notice. 
General
Product name Personal Projector
Model name RDJT50         1024X768  XGA
RDJT52         1024X768  XGA
Optical
Display system 1-CHIP DMD
Lens F/Number F/2.6
Lamp 250W UHP lamp
Electrical
Power supply AC100 ~ 240V, 4.0A, 50/60 Hz (Automatic)
Power consumption 330W (Typical)
Mechanical
Dimensions 302.3 mm (W) x 91.7 mm (H) x 216.3 mm (D)
Operating temperature 
range0°C ~ 35°C
Weight 6.6 lbs (3.0 Kg)
Input terminal
Computer input
     D-SUB IN  D-sub 15-pin (female)
     DVI-D DVI-D 19-pin (female)
Video signal input
     S-VIDEO Mini DIN 4-pin port x1
     VIDEO RCA jack x1
HDTV signal inputD-sub  YP
bPr RCA jack x3, through D-SUB IN 
terminal
Audio signal input
     Audio Mini jack stero port
Output
USB mouse connector  A/B series x1
Speaker  2 watt x 1
Control
RS-232C 9-pin x1 
						

							30DLP Personal Projector
Timing Chart 
Suppoted timing for Analog RGB and DVI inputs
Supported timing for YP
bPr input
ResolutionHorizontal 
Frequency 
(kHz)Vertical 
Frequency 
(Hz)Pixel 
Frequency 
(MHz)Mode
720x400 37.927 85.039 35.500 720x400_85
640x48031.469 59.940 25.175 VGA_60
37.861 72.809 31.500 VGA_72
37.500 75.000 31.500 VGA_75
43.269 85.008 36.000 VGA_85
800x60035.156 56.250 36.000 SVGA_56
37.879 60.317 40.000 SVGA_60
48.077 72.188 50.000 SVGA_72
46.875 75.000 49.500 SVGA_75
53.674 85.061 56.250 SVGA_85
832x624 49.725 74.550 57.283 MAC16”
1024x76835.522 86.957 44.900 XGA_43i
48.363 60.004 65.000 XGA_60
56.476 70.069 75.000 XGA_70
60.023 75.029 78.750 XGA_75
68.667 84.997 94.500 XGA_85
60.134 74.700 79.857 MAC19”
1152x864 67.500 75.000 108.000 SXGA1_75
1280x960 60.000 60.000 108.000 QuadVGA_60
1280x1024 63.981 60.020 108.000 SXGA3_60
Signal FormatHorizontal Frequency 
(kHz)Vertical Frequency 
(Hz)
480i(525i)@60Hz 15.73 59.94
480p(525p)@60Hz 31.47 59.94
576i(625i)@50Hz 15.63 50.00
576p(625p)@50Hz 31.25 50.00
720p(750p)@60Hz 45.00 60.00
720p(750p)@50Hz 37.50 50.00
1080i(1125i)@60Hz 33.75 60.00
1080i(1125i)@50Hz 28.13 50.00 
						

							DLP Personal Projector31
Supported timing for Video and S-Video inputs
Video modeHorizontal 
Frequency (kHz)Vertical 
Frequency (Hz)Pixel Frequency 
(MHz)
NTSC 15.73 60 3.58
PAL 15.63 50 4.43
SECAM 15.63 50 4.25 or 4.41
PAL-M 15.73 60 3.58
PAL-N 15.63 50 3.58
PAL-60 15.73 60 4.43
NTSC4.43 15.73 60 4.43 
						

							32DLP Personal Projector
DIMENSIONS
Unit: mm
AUTO BLANKSOURCE
KEYSTONE -KEYSTONE +
POWER
302.3mm 91.7mm
216.3mmMENU/EXIT