Epson TM-C7500 Maintenance Box SJMB7500

Yes, it’s normal for your Epson TM-C7500 to make some noise during operation, but the sound isn’t coming from the maintenance box itself.

The maintenance box (SJMB7500) is just a sealed container with absorbent pads/sponges that collect excess ink. It has no moving parts, so it doesn’t produce noise on its own.

The noises you hear are usually from the print head cleaning cycles, pumps, and internal mechanisms moving ink into the maintenance box. That’s part of regular operation.