Onkyo TX-SR313 - Manual (Page 58)

Appendix
En-58
The AV receiver contains a microcomputer for signal
processing and control functions. In very rare situations,
severe interference, noise from an external source, or
static electricity may cause it to lockup. In the unlikely
event that this happens, unplug the power cord from the
wall outlet, wait at least five seconds, and then plug it
back in.
Onkyo is not responsible for damages (such as CD
rental fees) due to unsuccessful recordings caused by
the unit’s malfunction. Before you record important
data, make sure that the material will be recorded
correctly.
Before disconnecting the power cord from the wall
outlet, set the AV receiver to standby.