TROUBLESHOOTING FLOW CHART
I.
Power compensation
does not operate. |
| ||
| NO | ||
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When mains is unplugged, | |||
is 3.6V at pin 26,pin 81 of IC501? |
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|
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| YES |
| |
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| NO | |
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Is (sine) signal applied to | |||
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pin 42 and 43 of IC501? |
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|
|
| |
| YES |
| |
|
| NO | |
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Is 5V at pin 37 of IC501? | |||
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| |||
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|
| |
| YES |
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| |
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| ||
Check IC501. |
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| |
Check C548, C523,
C547, C524.
Check X502.
Check reset circuit Of IC503.
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