Understanding the Button Layout
The GA-2100 features four buttons:
- A (Adjust): Top-left
- B (Light): Top-right
- C (Mode): Bottom-left
- D (Start/Stop): Bottom-right
Step-by-Step Time Setting Instructions
- Enter Timekeeping Mode:
- Press the C (Mode) button repeatedly until the time is displayed on the digital screen.
- Access Time Setting Mode:
- Hold down the A (Adjust) button for about 2 seconds until the city code starts flashing on the digital display.
- Select Your Home City:
- Use the D (Start/Stop) button to scroll forward through city codes and the B (Light) button to scroll backward.
- Choose the city code that represents your current time zone.
- Adjust Daylight Saving Time (DST):
- Press the C (Mode) button to move to the DST setting.
- Use the D (Start/Stop) button to toggle between ON and OFF.
- Set the Time Format:
- Press the C (Mode) button to navigate to the 12/24-hour format setting.
- Use the D (Start/Stop) button to select your preferred format.
- Set the Seconds, Hours, and Minutes:
- Press the C (Mode) button to move to the seconds setting.
- Use the D (Start/Stop) button to reset the seconds to 00.
- Press the C (Mode) button to move to the hour setting.
- Use the D (Start/Stop) button to increase the hour and the B (Light) button to decrease it.
- Repeat the process for minutes.
- Set the Year, Month, and Day:
- Continue pressing the C (Mode) button to navigate through the year, month, and day settings.
- Use the D (Start/Stop) et B (Light) buttons to adjust each value accordingly.
- Finalize the Settings:
- After all settings are adjusted, press the A (Adjust) button to exit the setting mode.
Synchronizing Analog Hands with Digital Time
If the analog hands do not match the digital time, follow these steps:
- Enter Hand Setting Mode:
- Hold down the A (Adjust) button for about 5 seconds until “H-SET” appears on the digital display.
- Adjust the Hands:
- Use the D (Start/Stop) button to move the hands forward and the B (Light) button to move them backward.
- Align the hands to match the digital time precisely.
- Exit Hand Setting Mode:
- Press the A (Adjust) button to exit. The hands will now move to the correct time.