1 - 1FO-3MKNo. 00ZFO3MKCUSMECONTENTSMODEL FO-3MKParts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones formaintaining the safety and performance of the set.This document has been published to be usedfor after sales service only.The contents are subject to change without notice.SHARP CORPORATIONSERVICE MANUALFACSIMILEOPTION MEMORYUPGRADE PWB[1] General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1[2] Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1[3] Diagnostic mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1[4] Circuit schematics and parts layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3[5] Parts guideThis machine is an option memory unit applica-ble to the machines FO-5700 (100V series).