Page: 18Service Guide OL400Chapter 2 Principles of Operation2.3 PRINTER CONTROL FUNCTION2.3.01 General InformationThe principle hardware components of the printer unit consist of the items listed below.Operation PanelEngine BoardPower Supply UnitFuser UnitMain MotorLED HeadResist MotorDC FanCopyright 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)