Section 7: Troubleshooting
7.1 Symptom/Solution Table
Symptom | Cause | Solution |
Power cannot be turned | • The Main power is not turned on. | • Turn the MAIN POWER switch on. |
on. | • The power cord is disconnected. | • Insert the power cord into an AC socket. |
| • 60 seconds have not elapsed since | • Wait 60 seconds before turning on power. |
| the power was turned off. |
|
No picture and sound. | • The setting of the input source is | • Set the correct input using the input select button of |
| not correct. | the projector or the remote control. |
| • RGB/Video/Audio wiring to | • Connect the cable to correct input/output source. |
| projector is not correct. |
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|
Sound is heard with no | • RGB/Video/Audio wiring to | • Connect the cable to correct input/output source. |
picture. | projector is not correct. | • Press the MENU button and increase BRIGHTNESS. |
| • The brightness is set fully to dark. | |
| • Lens cap is on. | • Remove lens cap. |
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|
|
Picture is displayed with | • Audio wiring to projector is not | • Connect the cable to correct input/output source. |
no sound. | correct. | • Press the VOL button to increase Volume. |
| • The volume is set to minimum. | |
| • The unit is muted. | • Press the MUTE button. |
| • PinP is on and audio is switched to | • Press VOLUME and move DISC PAD to switch to |
| VIDEO mode. | audio input. |
|
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|
Color is weak and tint is | • The color and tint have been | • Adjust the color and tint correctly. |
incorrect. | adjusted incorrectly. |
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Picture is dark. | • The brightness and contrast has | • Adjust the brightness and contrast correctly. |
| not been adjusted correctly. | • Replace the lamp with a new one. |
| • The lamp needs to be replaced. | |
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|
Picture is not clear. | • Projector is out of focus. | • Adjust the focus and H PHASE. |
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LAMP indicator lights | • Lamp will not ignite. | • Turn off power and let cool for 20 minutes, then |
red. |
| restart. |
|
| • If problem persists call your dealer. |
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| • Temperature inside projector is too | • Clear blocked ventilation holes. |
| hot. | • Clean air filter. |
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LAMP indicator blinks | • Lamp access door on bottom of | • Ensure lamp access door is closed. |
red. | case is open. |
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| • The lamp operating hours have | • Replace the lamp. |
| reached maximum operating hours. |
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TEMP indicator blinks | • Cooling fan not operating. | • Contact your dealer. |
red. |
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ENGLISH
© 3M 2000 | 3M ™ Multimedia Projector MP8770 | 23 |
