3-3. RECORDER AUDIO CIRCUIT
NO SOUND
ARE THERE SIGNALS | No | |
AT PG1304 pins 1, 3? |
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Yes |
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ARE IC1512 pins 6, 12 | No | |
AND IC1513 pins 6, 12 |
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0V? |
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Yes |
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ARE THERE SIGNALS | No | |
AT IC1507 pins 5, 10 |
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AND IC1508 pins |
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5, 10? |
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Yes |
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ARE THERE SIGNALS | No |
AT IC1507 pins 7, 8 |
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AND IC1508 pins 7, 8? |
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Yes |
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CHECK C3515, C3516, C1503, C1504,
R3517, R3518, R1579, R1580
BREAKDOWN CRD-RA1
CHECK Q3510, Q3511 AND Q3512
CHECK IC1512 AND IC1513
CHECK IC1507, IC1508, D3301, D1302, Q3543, Q3544, Q1310, Q1311, Q3505, Q3506, Q1312, Q1313, ZD3501, ZD1303
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