The clock attempts to sync every night at midnight. If it fails, it will try again an hour later. If it hasn't synced in days, try moving it to a different wall or closer to a window. The display is fading.
The is a reliable, accurate, and low-maintenance timepiece once you understand its signal reception needs. By following this extended manual, you should be able to set up the clock, troubleshoot common issues, and enjoy perfect timekeeping for years. sharp atomic clock spc373 user manual
While the clock will set itself automatically, you must input your and Daylight Saving Time preference manually. The clock attempts to sync every night at midnight
If the clock cannot receive a signal, you can set it manually: The display is fading
The Sharp SPC373 includes a green or blue LED backlight for nighttime viewing.
: A tower icon or signal bars will appear on the screen once the WWVB signal is successfully captured. Automatic Updates
It took him an hour to fumble through the time, the date, the 12/24-hour format. The manual’s diagrams were cryptic—little icons of suns and moons that seemed to mock him. But on page two, a footnote saved him: Note: When the battery is low, the display will show a flashing ‘BAT’ icon.