Section 7: Troubleshooting
7.1 Symptom/Solution Table
Symptom | Cause | Solution |
|
|
|
Power cannot be | • The Main power is not turned on. | • Turn the MAIN POWER switch on. |
turned on. | • The power cord is disconnected. | • Insert the power cord into an AC socket. |
| • 90 seconds have not elapsed since | • Wait 90 seconds before turning on power. |
| the power was turned off. |
|
|
|
|
No picture and sound. | • The setting of the input source is not | • Set the correct input using the input select button of |
| correct. | the projector or the remote control. |
| • RGB/Video/Audio wiring to projector is | • Connect the cable to correct input/output source. |
| not correct. |
|
|
|
|
Sound is heard with no | • RGB/Video/Audio wiring to projector | • Connect the cable to correct input/output source. |
picture. | is not correct. |
|
| • Lens cap is on. | • Remove lens cap. |
|
|
|
Picture is displayed with | • Audio wiring to projector is not correct. | • Connect the cable to correct input/output source. |
no sound. | • The volume is set to minimum. | • Press the VOL button to increase Volume. |
| • The unit is muted. | • Press the MUTE button. |
|
|
|
Color is weak and tint is | • The color and tint have been adjusted | • Adjust the color and tint correctly. |
incorrect. | incorrectly. |
|
|
|
|
Picture is dark. | • The brightness and contrast has not | • Adjust the brightness and contrast correctly. |
| been adjusted incorrectly. |
|
| • The lamp needs to be replaced. | • Replace the lamp with a new one. |
|
|
|
Picture is not clear | • Projector is out of focus. | • Adjust the focus and PHASE. |
|
|
|
LAMP indicator lights | • Lamp will not ignite. | • Turn off power and let cool for 20 minutes, then restart. |
red. |
| • If problem persists call your dealer. |
|
|
|
Cover indicator red. | • Air filter door on bottom of case | • Ensure air filter door is closed. |
| is open. |
|
|
|
|
TEMP indicator | • Temperature inside projector | • Clear blocked ventilation holes. |
red. | is too hot. | • Clean air filter. |
|
|
|
ENGLISH
7.2 Message/Solution Table
Error Message Displays | Cause | Solution |
|
|
|
NO SIGNAL IS | The projector is not detecting a signal. | Check cable connections to input device. Input device not |
DETECTED. |
| connected to this input mode, switch to next mode. |
|
|
|
INVALID. | The horizontal frequency of input signal | Switch projector to correct resolution. |
| exceeds projector capability. | See Appendix A.5 |
|
|
|
CHANGE THE LAMP. | Lamp operation time is greater than 950 | Change the projector lamp and reset the lamp operation |
LIFE: 50 HS | hours. | hours to zero. |
|
|
|
CHANGE THE LAMP. | Lamp operation time is greater than 1,000 | Change the projection lamp and reset the lamp operation |
NO LIFE. |
| hours to zero. |
|
|
|
© 3M 1999 | 3M™ Multimedia Projector MP8780 | 21 |
