How to Replace the Battery and Perform an AC Reset on a CASIO G-Shock GA-100CF Watch**
*Introduction*
This guide will provide you with step-by-step instructions on how to replace the battery and perform an AC (All Clear) reset on a CASIO G-Shock GA-100CF watch. Please note that this process requires the use of specific watchmaker tools.
*Identifying the Need for an AC Reset*
If the display on your digital watch is malfunctioning or displaying incorrect information, it may require an AC reset. Upon removing the watch's back, you should observe an indication of a reset hole on the watch's movement. This is often marked with the letters "AC."
*Battery Replacement*
1. *Battery Type:* The CASIO G-Shock GA-100CF watch utilizes a CR1220 battery. Compatible battery brands include Renata, Sony, and Maxell.
2. *Battery Replacement Procedure:*
a) Open the watch's back using the appropriate watchmaker tool.
b) Locate the battery compartment and carefully remove the old battery.
c) Insert the new CR1220 battery, ensuring proper polarity.
d) Secure the battery compartment and close the watch's back.
*AC Reset Procedure*
1. *Identifying the AC Reset Hole:* After removing the watch's back, locate the AC reset hole on the watch's movement. It is typically marked with the letters "AC."
2. *Resetting the Watch:*
a) Insert the tip of a non-metallic tool, such as a toothpick, into the AC reset hole.
b) Gently press and hold the reset button for approximately two seconds.
c) The watch should now be reset, and the display should function correctly.
*Conclusion*
By following these instructions, you can successfully replace the battery and perform an AC reset on your CASIO G-Shock GA-100CF watch. If you encounter any difficulties or have additional questions, please consult a professional watch repair service.
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