点灯

1. Origins, structure, and basic meaning

• Structure: 点灯 (てんとう) means a light turning on or being lit. 点灯する is automatic operation; 点灯を確認する verifies the lit state.
• Basic usage: An entrance light turns on automatically at dusk; a red lamp's illumination is checked before a machine is stopped.

2. Common pitfalls and similar expressions

• Automatic lighting and confirmation of a warning state
  • The first subject is 照明が; in the second the illumination serves as a signal for stopping. It does not state that a person switched the lamp on.