SERVICE MANUALCODE: 00ZERA57VOSMEER-A570 OPTIONSRN (IN-LINE) INTERFACEMODEL ER-A6INRS-232 INTERFACEMODEL ER-A5RSCONTROL ROMMODEL ER-A57R1(For "V" version)I. SRN (IN-LINE) SYSTEM FOR ER-A570 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1II. RS-232 SYSTEM FOR ER-A570 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1III. TEST FUNCTION FOR ER-A6IN AND ER-A5RS . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1IV. HARDWARE DESCRIPTION FOR ER-A6IN AND ER-A5RS . . . . . . . . . . . . . . . . . 4-1PARTS GUIDECONTENTSSHARP CORPORATION This document has been published to be used forafter sales service only.The contents are subject to change without notice.Parts marked with "! " is important for maintaining the safety of the set. Be sure to replace these parts with specifiedones for maintaining the safety and performance of the set.