Printer Tests - General Information; Rolling Ascii Print Test; Font Sample Test; Serial Interface Loopback Test - Oki ML390 Service Manual

4.9 PRINTER TESTS
4.9.01 General Information
There are three tests which can be run for the unit.
· Rolling ASCII Print Test
· Font Sample Test
· Serial Interface Loopback Test
The Rolling ASCII Print and Font Sample Tests are used to determine if the printer is operating properly.
The Serial Interface Loopback Test is used to test proper operation of the Serial Interface Board.
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Service Guide ML390/391
Chapter 4 Failure & Repair Analysis
Page: 104