Simultaneously press and hold the , "TUNER PRESET CH -" , and "POWER" buttons. Release when the display flashes at one-second intervals.
The manual and related technical documents outline standard procedures for resolving common issues: Denon Avr-2313 Service Manual
Servicing high-fidelity audio equipment involves significant risks. Official documentation emphasizes the following: Service Manual: AVR-2313CI AVR-2313 | PDF - Scribd Simultaneously press and hold the , "TUNER PRESET