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    User name V. Sulkosky

    Log entry time 19:31:23 on October 28, 2008

    Entry number 245194

    This entry is a followup to: 245165

    Followups:

    keyword=Re: 1H03A HARP operable

    We need to make sure that the Harp wires haven't changed their positions.
    The description from ELOG # 1443266 sounds a bit ominous:

    Investigated harp 1H04A. Found the harp in the fully inserted position.
    Rebooted IOCHA1, and scanned harp several times until we duplicated the
    original problem.

    We replaced the coupling on the encoder shaft and the coupling on the
    stepper motor shaft. Re-terminated the power cable on the stepper motor
    box located on the girder. Ran several harp scans, but the harp was not
    operating correctly. Adjusted the stepper motor until the encoder value
    read 118407 when the spool weldment was compressed to 107.4mm. No
    breaking current present when investigating the harp. Replaced the
    stepper motor card inside the electronic box, and performed several harp
    scans. The harp is now operable.