HP-97 Printer Malfunction

[Jonas Sandstedt]

I have to make a correction: when the motor is manually moved in the forward direction and the power is set on, the motor returns the printhead to the home position. If I then press the button for advancing the paper, the motor runs a few turns in the forward direction, stops and the sound starts. If I then turn off the calculator and on again, and then press the button for advancing the paper, the motor does not run at all, only the sound starts. The motor thus only runs a few turns in the forward direction after having returned the printhead to the home position, not otherwise, when the printhead have been slightly moved due to the few motor turns in the forward direction there is no further movement.