JF TECH JRC-27F - Restoring System Defaults; Channel Management and Status

Figure 4.44 auto maintain
4.5.7 Restore
The system restore to the default. You can choose the items according to the
menu.
Figure 4.45 Restore
4.5.8 Channel manage
Channel management including digital channel, channel status, and channel
mode.(note: under full-analog mode, there is only channel mode selection)