Need schematic diagram of electronics for HP3940 inkjet printer.To repair control board that drives...
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Need schematic diagram of electronics for HP3940 inkjet printer.To repair control board that drives stepper motors. Green light comes up steady but motors do not activate. Problem seems to be with the stepper motors driver chip or communication between the uProcessor and the motor drive IC.
My computer crashed and I am having to install my printer driver again, except now the driver it...
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My computer crashed and I am having to install my printer driver again, except now the driver it came with fails to install, I've tried the driver online at HP's website with no luck. What can I do?