TX7155 - Video projector OPTOMA - Free user manual and instructions
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| Product Type | Video Projector |
| Brand | Optoma |
| Model | TX7155 |
| Display Technology | DLP |
| Resolution | XGA (1024 x 768) |
| Brightness | 3000 ANSI Lumens |
| Contrast Ratio | 2000:1 |
| Lamp Life | 3000 hours (Normal), 4000 hours (Eco) |
| Lamp Type | P-VIP 200W |
| Weight | 2.5 kg (5.5 lbs) |
| Dimensions (W x D x H) | 27.4 x 21.9 x 8.5 cm |
| Power Consumption | 230W (Standby <1W) |
| Inputs | VGA, Composite Video, S-Video, RS-232 |
| Audio | Built-in speaker (2W) |
| Projection Lens | Manual zoom and focus |
| Throw Ratio | 1.95 - 2.15 :1 |
| Screen Size | 27.5 - 302 inches diagonal |
| Keystone Correction | ±40° Vertical |
| Fan Noise | 30 dB (Eco mode) |
| Cleaning | Clean filter every 100 hours; use soft cloth for casing |
| Safety | Automatic power-off after 10 minutes idle |
| Spare Parts | Replacement lamp: BL-FP200A |
Frequently Asked Questions - TX7155 OPTOMA
How do I replace the lamp on the Optoma TX7155?
Turn off and unplug the projector. Wait 30 minutes for cooling. Remove the lamp cover screw, open cover, disconnect lamp connector, remove old lamp, insert new lamp (model BL-FP200A), reconnect, close cover, and reset lamp timer via menu.
What is the recommended cleaning procedure for the projector?
Turn off and unplug. Use a soft, dry cloth to wipe the exterior. For the lens, use a lens cleaning kit or microfiber cloth. Clean the air filter every 100 hours with a vacuum cleaner.
Can I connect my laptop to the projector?
Yes, use a VGA cable to connect your laptop's VGA output to the projector's VGA input. You may need to press the 'Source' button on the projector or remote to select VGA.
How do I adjust the keystone correction?
Press the 'Keystone' button on the remote control. Use the arrow keys to correct vertical distortion. Range is ±40 degrees.
What does the 'Eco' mode do?
Eco mode reduces lamp brightness to extend lamp life and lower fan noise. Lamp life increases from 3000 to 4000 hours. Access via menu under 'Settings' > 'Lamp Settings'.
Why is the projector not turning on?
Check power cable connection. Ensure the power switch is on. If the LED is flashing, it may indicate a lamp issue—allow lamp to cool, or replace if dead. Also check that the lamp door is closed properly.
How do I reset the lamp timer?
After replacing the lamp, go to Menu > Settings > Lamp Settings > Lamp Reset. Select 'Yes' to reset the timer. This clears the lamp warning message.
What is the throw distance for a 100-inch screen?
With a throw ratio of 1.95-2.15:1, for a 100-inch diagonal screen, the distance from lens to screen is approximately 3.9 to 4.3 metres.
Can I use a universal remote with the projector?
Yes, the projector supports RS-232 control. You can use a universal remote with programmable codes, but compatibility varies. Refer to the remote's manual for Optoma codes.
How do I mount the projector on the ceiling?
Use a compatible ceiling mount (e.g., Optoma OCM-EX10). Ensure the mount supports the projector's weight (2.5 kg). Screw mount into the three screw holes on the bottom. Follow mount instructions for safe installation.
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