Symptom
Before requesting repair, please check in the following chart. If the situation cannot be corrected, then contact your dealer.
Table 11: Symptom
Symptom | Possible cause | Remedy | Page | ||
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| The main power switch is | Turn on the main power switch. |
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The power is not | not turned on. |
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| 8, 9 | |||
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turned on. |
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The power cord is | Plug the power cord into an AC | ||||
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| disconnected. | power outlet. |
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| The input is not correctly | Use the projector or remote | 10 | ||
No video or audio. | set. | control transmitter to set. | |||
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| No signal input. | Connect correctly. |
| 7, 8 | |
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| The projector is not | Connect correctly. |
| 7, 8 | |
| correctly connected. |
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Video is present but | The volume is set to | Press VOLUME | on the remote |
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no audio. | control or display the menu | 11, 15 | |||
minimum. | |||||
| screen and adjust the volume. |
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| Mute is turned on. | Press the MUTE | button. | 11 | |
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| The projector is not | Connect correctly. |
| 7, 8 | |
| correctly connected. |
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Audio is present but | The brightness adjustment | Select BRIGHT with the MENU |
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knob is rotated fully | 12 | ||||
no video. | button and the press the button. | ||||
clockwise. |
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| The lens cap is still | Remove the lens cap. | 9 | ||
| attached. | ||||
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Colors are pale and | Color density and color |
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color matching is | matching are not correctly | Adjust the video. |
| 12 | |
poor. | adjusted. |
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| Brightness and contrast | Adjust the video. |
| 12 | |
| are not correctly adjusted. |
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Images are dark. | The lamp is approaching | Replace with a new lamp. | 17 | ||
| the end of its service life. | ||||
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| WHISPER mode is set. | Clear WHISPER mode | 15 | ||
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Video is blurred. | Focus or H PHASE is out | Adjust the focus or H PHASE. | 9, 12 | ||
of adjustment. | |||||
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22ViewSonic PJ750