IBM 3590 manual Enter, Processor Check

Models: 3590

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Enter

A push button that allows the operator or the service representative to select the menu option at the location of the cursor arrow.

Processor Check

An indicator LED that switches on for 10 to 20 seconds during a normal power-on or a power-on reset. If no fault is detected, the LED switches off. If the LED remains on, the 3590 requires service.

83590 Operator Guide

Page 28
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IBM 3590 manual Enter, Processor Check