CIRCUIT DIAGRAM (MAIN)

XP-30 Mar. 19999 : Computer I/F test 11 :Factory resetConnect the computer cable (17049906) and verify thePress the [ENTER] button to perform a Factory Reset."Disconnect" display. Once again, disconnect the computerTest mode has been successfully completed.cable.The instrument will automatically start up in normal mode.Verify that the display indicates "OK."If the display does not indicate "OK,"verify that you started up the system with the select switch in the "Mac" position,orcheck IC17 and IC18 on the main board.Move the select switch to the "Mac", "PC-1", "PC-2", and"MIDI" positions.Verify that the display indicates "OK."If the display does not indicate "OK,"check SW2, IC17, andIC18 on the main board.When the test is completed normally, you will automaticallyadvance to the next test.10 : Sound testPress the [ENTER] button.The LCD will indicate "L:Sine," and a sine wave will beoutput from "OUTPUT L."Verify the output sound using monitor speakers etc.If the sine wave cannot be produced correctly, checkIC38,IC24, IC32, and CN8 on the main boardand IC2 and CN2 onthe panel board.Press the [ENTER] button.The display will indicate "R:Square," and a square wave willbe output from "OUTPUT R."Verify the output sound using monitor speakers etc.If the square wave cannot be produced correctly, checkIC38,IC24, IC32, and CN8 on the main boardand IC2 and CN2 onthe panel board.Press the [ENTER] button to proceed to the next test.15