Sansui AU-D607F EXTRA Maintenance: Internal cleaning Volume components disassembled, greased Selector switches disassembled, greased Speaker relay cleaning DC offset adjustment, bias adjustment, equalizer adjustment A copy of the instruction manual is included. *The selector lamp lights up even when not selecting phono, but there is no problem with the operation. Please refrain from purchasing if you are sensitive to used items. No price reduction is possible. Thank you for your understanding. #Sansui #IntegratedAmplifier #Audio