![E-23](/images/new-backgrounds/25732/2573291x1.webp)
TROUBLESHOOTING GUIDE
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| Is the voltage at pin | No | |||||||
| 40 of IC5501 5V ? |
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| Yes |
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| Is the voltage at pin | No | |||||||
| 34 of IC5501 12V ? |
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| Yes |
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| Does | AUDIO s | ignal |
| No | ||||
| appear at pins 6 and 7 | ||||||||
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| of IC5501 ? |
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| Yes |
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| Does | AUDIO s | ignal |
| No | ||||
| appear | at pin 21 | |||||||
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| of IC5501 ? |
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| Yes |
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| Does | AUDIO | signal |
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| appear at pin 22 | ||||||||
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| of IC5501 ? |
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| Yes |
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| Does | AUDIO s | ignal |
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| appear | at pins 15 and | |||||||
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| 18 of | IC5501 ? |
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| Yes |
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Check J4501 and peripheral |
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circuit. |
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Check POWER BLOCK.
Check POWER BLOCK.
Check J4501 and peripheral circuit.
Replace IC5501.
Check IC4001.
Replace IC5501.