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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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Toshiba 3450 Fax - need Service Manual
I need a service manual or at least schematic for the main board
of a Toshiba 3450 Fax machine. Not available from Tritronics, Herman's, or Vance-Baldwin - apparently Faxes are made by a different division of Toshiba than their A/V stuff. The model was not listed on any of the on-line fax parts dealers I tried. Calling Toshiba directly, I just got the runaround, just being told to call different numbers - no one actually said they didn't have the manual - just didn't have a clue as to how to get it. I have a collection of 8 or 9 different phone numbers I was passed around to over a 2 day period. Problem with the machine is it's basically dead. Thought it would be a simple power supply problem, ESR'd the caps in the PS, found an open 0.33 uF electrolytic, replaced with three 0.1s. Machine still dead, but have +5, +/-12, and +24 volts from PS. One output is relay switched, and never turns on. I don't know if there should be any additional output voltages from the PS. Have clocks and data activity on the uP (Z8002), but nothing on LCD except a faint row of blocks on the top line of the display, no other signs of life. Mike WB2ME |
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