ZX-DECL-電源アダプター-(1),Vintage IC Chips Transistors Etc 17410713 NOS Quantity 9,ZX-DECLDIV-PSKT-(1)(W),ZX|テルワールド(NTT中古ビジネスフォン販売店),I just acquired a 6D 311 and I'm trying to restore it. Can anyone tell me how to take off the on/off/volume knob? I don't want to damage it before I've even