TROUBLESHOOTING GUIDE
NO SOUND DVD/CD ANALOG AUDIO
Is there signal at pins | No | ||
113, 114, 115 and |
| ||
116 of IC4001? |
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| Yes |
| |
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| No | |
Is there signal at pins 1 | |||
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and 7 of IC8501? |
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| Yes |
| |
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| ||
|
| No | |
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Does CD8501 connected?
Yes
Change MAIN PCB.
NO SOUND DVD/CD DIGITAL AUDIO
Is there signal at pin1 | Yes | ||
| |||
of CP8501? |
| ||
| No |
| |
|
| ||
|
| Yes | |
Is there signal at pin | |||
| |||
122 of IC4001? |
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| No |
| |
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|
| |
Change IC4001. |
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|
|
| |
Change IC4001.
Check pins 1 and 7 of IC8501 
and peripheral circuit.
Connected CD8501.
Change MAIN PCB.
Check line circuit IC4001 to CP8501.
