Tools: slz79c projector.
1. Press Menu to find "Light bulb service time", and then press Enter for three seconds. After the "shutdown" appears, turn off the power and restart.
2. In standby mode, press and hold "Power Supply and Input" (the input button is used to switch their respective input modes), turn on the power supply and wait for 5 seconds. Then turn it on, and it will be cleared.