Page: 104Service Guide ML390/391Chapter 4 Failure & Repair Analysis4.9 PRINTER TESTS4.9.01 General InformationThere are three tests which can be run for the unit.· Rolling ASCII Print Test· Font Sample Test· Serial Interface Loopback TestThe 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.Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
