Sony ICF-C255RC Operating Instructions

To set the time, press and hold the "CLOCK" button until the hour digits flash. Use the "+" and "-" buttons to adjust the hour, then press "CLOCK" again to set the minutes. Press "CLOCK" once more to confirm the time.
Ensure that the alarm is set to "ON" and the volume is not set to zero. Additionally, check that the AM/PM setting is correct if using a 12-hour format.
Extend the FM wire antenna fully and reposition it for better reception. Avoid placing the radio near metal objects or electronic devices that might cause interference.
Check if the brightness control is set to a lower level. Adjust the brightness by pressing the "SNOOZE/BRIGHTNESS" button to toggle through the brightness settings.
Press the "ALARM SET" button, select the radio as the alarm sound by toggling with the "+" button, and set the desired wake-up time. Ensure the radio station is tuned before setting the alarm.
To reset the device, unplug it from the power source, wait for a minute, and then plug it back in. This will reset the clock and all settings to default.
Ensure that the DST (Daylight Saving Time) setting is enabled. Press and hold the "DST" button until "DST ON" appears on the display.
Locate the battery compartment at the bottom of the unit, slide the cover off, and replace the old battery with a new CR2032 lithium battery. Ensure the battery is placed with the correct polarity.
The snooze duration is fixed at 10 minutes and cannot be adjusted on the Sony ICF-C255RC.
Check that it is properly plugged into a working power outlet. If it still does not turn on, try resetting the device by unplugging it for a minute before plugging it back in.