Sony ICF-C490 Operating Instructions
![Sony ICF-C490 manual cover](/images/a3b4406654e86982e71b7061/thumbs/thumb175x175.webp)
To set the alarm on the Sony ICF-C490, press and hold the 'Alarm Set' button until the time flashes. Use the tuning dial to adjust the hour and minute. Press 'Alarm Set' again to confirm.
Check if the Sony ICF-C490 is properly plugged into a working outlet. If it is, try resetting the device by unplugging it for a few minutes and then plugging it back in.
To enhance radio reception, extend the antenna fully and adjust its position. You can also reposition the unit closer to a window or away from electronic devices that might cause interference.
To switch between 24-hour and 12-hour time formats, press and hold the 'Clock' button for a few seconds until the format changes.
To reset the Sony ICF-C490, unplug the power cord and remove the backup batteries. Wait for a few minutes before reinserting the batteries and plugging the power cord back in.
Ensure the alarm is turned on and the volume is set to an audible level. Double-check the AM/PM setting if using a 12-hour format.
The Sony ICF-C490 does not have adjustable display brightness. Consider repositioning the clock to reduce glare or ambient light interference.
Use two AA alkaline batteries for backup power to maintain clock and alarm settings during power outages.
To set the sleep timer, press the 'Sleep' button repeatedly to cycle through available time options. The radio will turn off automatically after the set time.
Yes, you can use the radio function without setting the clock. The clock setting is independent of the radio operation.