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Toshiba 1550 Service Manual
Also see for 1550: Service handbookOperator's manualManualManual
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Contents
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1550/1560 OPTICAL 7 - 18 Mar. 1998 © TOSHIBAON ONONONON ONONONABAB7.4.2 Pulse motor dirve circuit (constant voltage type) (M3, M4)Lens motor (M3) (LMS-MTR) ~Driven by IC5 (Logic PC board: TD62308F)Mirror motor (M4) (MRR-MTR) ~Driven by IC4 (Logic PC board: TD62308F)678DC24VDA DAQA QA QB QBDB DBTD62308APThe diagram on the right shows signals impressedto QA, QB, QA, and QB bases in two-phase exci-tation.The ON/OFF combination of the transistor isswitched.The combination of phases to which the currentflows is switched.Motor rotatesÕ ÕPhase APhase APhase BPhase B |
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