- Press and hold the Shift key.
- Briefly press the Compare key.
- Release the Shift key to hear the original.
- Repeat steps 1-3 to return to the edited version.
Source: Microwave 2 — microwave2ownersmanual.raw (manual)
Symptoms this guide addresses
Source: Microwave 2 — microwave2ownersmanual.raw (manual)