Mitsubishi Tx20u Projector User Manual

Troubleshooting (continued)
EN-71
No image appears on the screen. (continued) 
Images are not displayed correctly. 
ProblemSolution
Power turns off.   This problem may occur when the intake vent and/or exhaust vents are blocked. (In
such a case, the STATUS indicator brinks orange.)
JRemove the objects blocking the intake vent and/or exhaust vents and then 
carry out the following procedure.
1. Wait for the intake fan and/or exhaust fan to stop. (Wait until the STATUS 
indicator goes out.)
2. Unplug the...

EN-72
Troubleshooting (continued)
Images are not displayed correctly. (continued) 
ProblemSolution
Projected images are 
blurred.  Adjust the focus. (See page 19.)
 Clean the lens.
 Press the W or X button on the remote control to eliminate flicker.
 Adjust TRACKING and FINE SYNC. in the SIGNAL menu. (See page 30.)
 Set OVER SCAN in the SIGNAL menu to 100%. (See page 30.)
 Set the keystone adjustment to 0 using the KEYSTONE button. (See page 17.)
 Set the projected image size to maximum (0) in DIGITAL...

Troubleshooting (continued)
EN-73
Images are not displayed correctly. (continued) 
Others 
ProblemSolution
Projected images are 
obscured. Match the output resolution of your computer with the resolution of the projector.
For the method to change the output resolution of the computer, contact the
manufacturer of your computer. (See page 79.)
 Some images and texts appear obscured during the keystone adjustment. In such
cases, use the projector without applying the keystone adjustment. (See page 17.)...

EN-74
Troubleshooting (continued)
Others (continued) 
If the following problem occurs after the lamp is replaced, check the following first. 
ProblemSolution
Abnormal sound is heard.   Because the color wheel spins at a high speed, metallic sounds may be heard in
rare occasions. Such symptom is not a malfunction.
Fan sound increse 
suddenly during LAMP 
MODE LOW2. During LAMP MODE LOW2 is switched, fan speed increase for a short time once
per 30 minutes. This phenomenon is to keep lamp condition well and...

Troubleshooting (continued)
EN-75
Maintenance
Warning:
Do not use flammable solvents (benzene, thinner, etc.) and flammable aerosols when cleaning the projector body and 
lens. Flammable substances may ignite causing fire or breakdown while the lamp is illuminating.
Caution:
Be sure to turn off the lamp and unplug the power cord from the wall outlet before you perform any maintenance on 
the projector.
Cleaning of the projector and the ventilation slots
Use a soft cloth to clean the projector and the...

EN-76
This projector has two indicators, each of which shows the operation condition of the projector. The following offer 
solutions to possible problems. If these problem persist, turn the projector off and consult your dealer.
Normal condition 
Abnormal condition 
POWERSTATUSCONDITIONNOTE
Stand-by
Lamp stand-by for power-off The power cannot be turned on by 
pressing the POWER button.
Lamp stand-by for power-on The power cannot be turned off by 
pressing the POWER button.
The power is on. (Normal...

EN-77
 The specifications and outside appearance of the projector are subject to change without prior notice.
Type DLP™ projector
Model TX20U TW21U
Rated power supply 100 - 240 V AC, 50/60 Hz
Power consumption 3.5 A
During standby: 0.5W (when Standby Mode is Low)
Display Technology 0.55-inch single chip Digital Micromirror 
Device (DMD)
Pixels: 1024 x 768 = 786432 pixels0.65-inch single chip Digital Micromirror 
Device (DMD)
Pixels: 1280 x 800 = 1024000 pixels
Colors 16770000 colors
Projection lens F 2.5...

EN-78
Specifications (continued)
Connectors
Dimension drawing (unit: mm)
What’s included in the box
* One of power cords for the U.S., Europe, U.K., Australia, and South Korea is provided appropriately.
Replacement part (option/not included in the box)
Spare lamp: VLT-TX20LP
COMPUTER/COMPONENT VIDEO IN, MONITOR OUT (Mini 
D-SUB 15-pin)HDMI (HDMI 19-pin) SERIAL (D-SUB 9-pin)
AC power cord* for the U.S. J2552-0063-03 Remote control
for Europe J2552-0247-00 Safety Manual/Quick Start up
for the U.K....

Specifications (continued)
EN-79
Supported input signal
*1: Indicates the resolution when ASPECT in the FEATURE menu is set to NORMAL.
*2: Signals marked with O in the Plug and Play column are described in EDID (extended display identification data) of the projector. 
Signals described in the Signal mode column can be input regardless of the O mark in the Plug and Play column. For signals not 
marked with O in the Plug and Play column, the resolution may not be supported even when it is supported on the...

EN-80
Specifications (continued)
3D supported signal
*1:  Indicates the resolution when ASPECT in the FEATURE menu is set to NORMAL.
Important:
 Some computers aren’t compatible with the projector.
 The projector’s maximum resolution is 1024 x 768 pixels (TX20U)  or 1280 x 800 pixels (TW21U). It may not display images of
higher resolutions than its maximum resolution correctly.
 Images with SYNC on G (Green) signal may jitter.
 Images with SYNC on G (Green) signal may be tinged with green.
 If the...