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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Old Epson Printer Motor Questions
I just scrapped the two motors out of an old Epson printer. Markings
on one are EM-289, 940906B, the second is marked EM-293, 940903B Each motor has 4 wires going to the motor. From the feel of the rotors, these may be stepping motors. Does anyone know the approximate voltage used to drive these motors? I can play around with them, but would feel better knowing about what they should be driven with. H. R. (Bob) Hofmann |
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Old Epson Printer Motor Questions
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Old Epson Printer Motor Questions
On Aug 8, 2:21 am, "James Sweet" wrote:
"hr(bob) " wrote in message ups.com... I just scrapped the two motors out of an old Epson printer. Markings on one are EM-289, 940906B, the second is marked EM-293, 940903B Each motor has 4 wires going to the motor. From the feel of the rotors, these may be stepping motors. Does anyone know the approximate voltage used to drive these motors? I can play around with them, but would feel better knowing about what they should be driven with. H. R. (Bob) Hofmann They sound like bipolar stepper motors. What is the impedance of the windings? Most of these are 12V. Jim: Thanx for the info, I'm on a vacation and don't have any of my stuff with me, so it will have to wait till I get back home. I didn't have any way to measure the power supply voltages before I scrapped the motors, but they look pretty substantial and I will play around with them when I get home. Based on the construction of the printer, I can see why Epsons cost more than Lexmarks. BOb Hofmann |
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Old Epson Printer Motor Questions
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