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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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HELP - Apple LaserWriter II NT
Circuit diagram/schematic needed
for Sanken power supply ref AC230V IN RG1-1395 (04) DATE 1989-11 Sanken Electric Co Ltd. became intermittent then failed error 50 two falshing red LED's. Query whaich part is the triac? Board tracing shows p/s board in two isolated divisions, a power side, and a logic side. Between the two a multi-winding txfmr, and 2 opto-couplers. Is the triac on the power side or the logic side? The parts have Sanken logos, and there is no reference to most of them on the Sanken site. Nothing that references as a triac. A schematic of any LaserWriter p/s pcb might give a handle on the logic of the p/s. |
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