Troubleshooting | Chapter 4 |
This chapter provides troubleshooting information for the B243W:
1. No Power
No power
Press power key and look if the picture is normal
NG
Please reinsert and make sure the
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| Measure U701, U702 Pin2=3.3V, |
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| U703 Pin1=1.8V |
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| NG |
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| Measure CN701 Pin1=12V?Pin5＝5V? |
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| Check if X401,X402 oscillate |
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| waveforms are normal |
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| NG |
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| Replace Power section | ||||||
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| NG |
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| OK | Replace X401,X402 |
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| Replace U701,U702,U703 |
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| Replace U403 |
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32
