Op-12 - Roland SH-2000 Manual

4. OP-12C
(OP-12C: 149-012C; OP-128: 149-0128)
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µPC1458C
CA1458G
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3
4
TOP VIEW
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CA3080
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TOP VIEW
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BOE
25C828 R
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25A733 Q
D.S
25K30A Y/GR
TOP VIEW
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~ 152473 (15953, 151555)
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Metal Oxide Film Resistor
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NOV 10 1977 SH-2000
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NOTE:
1.. At present, FET 25K30A GR is used for Q 504 and 505 . .
In older products 25K30A Y is used, which can be
changed to 25K30A GR by changing R513 and 514
(33KQ) to 100KD, at the same time . .
2 . . R575, 47KQ is mounted on foil pattern side in older
PCB (OP-12B) . . Difference between OP-12C and B is
solely that point. They are interchangeable . .
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