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IBM S/390 Multiprise 3000 Mainframe - Diagnosing and repairing a faulty EPO power switch card
Автор: Francesco F
Загружено: 2025-04-24
Просмотров: 271
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Apparently the most common failure point for a machine with “seven nines” of reliability is the power switch! Fortunately it’s very easy to clean the contacts and restore it to working order. Make sure the lower switch is not set to Room EPO as that will defeat the main unit EPO (the big red lever).
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