Yamaha NX-A01 Service Manual

Also see for NX-A01 - Speaker Sys: Product bulletin Owner's manual Owner's manual

Contents

NX-A014NX-A01• After disassembling the unit or replacing any part, be sure to input a signal (20 Hz to 20 kHz) from the PORTABLE INterminal to make sure that the unit is free from chattering or abnormal sound.• When replacing the MAIN (2) P.C.B. and button assembly, be sure to use the button support jig for installation of thebutton assembly.• The sheet window once removed cannot be reused. Be sure to use a new sheet window for replacement.1. Removal of MAIN(1) P.C.B..a. Remove 2 sheet window. (Fig. 1)b. Remove 4 screws (1), and then remove MAIN (2) P.C.B. together with bottom case. (Fig. 1)c. Remove CB302 and CB303. (Fig. 1)2. Removal of MAIN (2) P.C.B..a. Remove SPBOX ASS’Y. (Fig. 1)b. Remone 4 screws (2), and then remove MAIN (2) P.C.B.. (Fig. 2)Fig. 1 Fig. 2CB303CB302SPBOX Ass'yCaseSheet WindowSheet Window11MAIN (1) P.C.B.MAIN (2) P.C.B.Case22 About the Status Indicator (LED)The status indicator turns on or flashes to indicate the sta-tus of this unit.This unit is on.This unit is in the standby mode, or discon-nected from the AC adaptor.This unit is muted.The protection circuitry has been activated.(Disconnect the AC adaptor and wait for a while.)OnOffFlashing(every second)Flashing(rapidly)1234Status indicator (LED)MAIN (2) P.C.B.SPBOX ass'yMAIN (1) P.C.B.1234The current status of this unitLED status INTERNAL VIEW DISASSEMBLY PROCEDURES