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{\Large \bf  Repairing the HP9866A printer -- Part 2\\
Tony Duell (ard@p850ug1.demon.co.uk)\\}
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{ \large 

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{\large Control State Machine Firmware\\}

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{\Large Motor Control Theory of Operation\\}

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{\Large Power Supply Theory of Operation\\}

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All sections  of the printer electronics have  now been described. The 
final article in this series will cover the practical details of 
dismantling the printer for repair and tracing faults in the electronics.

}
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