Denon AVR-X4500H power conversion 100v to 220-240v

Hi everyone, I am importing Denon avr x4500h from Japan to India. Japan is on 100v and India is on 220-230v. I referred to the service manual and found the relevant SMPS pcb diagrams (pdf attached). These diagrams show the "option" to change certain components and keep certain lines "open". I just wanted to know if anyone has done this and how difficult it would be or should I just opt for a step down transformer (and quality could be an issue).
Any kind of help would be much appreaciated. Thanks.
 

Attachments

  • avr4500h-smps related.pdf
    8.9 MB · Views: 25