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This manual was very good & was very helpful with repairs.
Always great & fast service from Owner's manual.
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Very pleased with the quality of the scan. No complaints whatsoever.
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I liked the product. I would use their sevices again.
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I Recently purchased yet another Service Manual from Owner-Manuals.com, this time for a Sony EVS700ES/UB Videocassette Recorder. The Manual was available for upload within two hours and is an Extremely Good copy, as some of this I was able to enlarge to get even better detail.
Once Again, Very happy with the result!
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A good and useful manual. With these, We was abled to isolate and pin point the component that was causing the problem. The total time spent in troubleshooting is very much reduced.
THEORY OF OPERATION
2-2-5. Carriage Motor Speed Control Since the carriage motor is a stepping motor, the carriage can be stopped at a desired position by controlling acceleration and deceleration. The carriage can also move backward. The rotational speed of the carriage motor is set by the number of pulses per time unit. The character pitch (horizontal character size) in each print mode is determined by changing this rotational speed (or carriage transfer speed). (1) At start-up of the motor: The number of pulses input to the motor increase in steps, reaching a certain frequency. (2) To stop the motor: The number of pulses input to the motor decreases in steps, in order to gradually bring the motor to a halt. (3) When printing is carried out: Pulses of a uniform pulse width are supplied for printing. 2-2-6. Paper Feed Motor Driving Circuit Again, a stepping motor is employed as the paper feed motor, which turns a certain angle only when a drive pulse is received. This 4-phase stepping motor is controlled by the phase 1-2 excitation method. The following shows the paper feed motor drive circuit and the control signal generated by the phase 1-2 excitation method.
Fig. 2-12 Paper Feed Motor Driving Circuit
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