From the category archives:

Casio G-Shock

How to change a battery on a Baby-G

Here you cna see my tools that I use for changing batteries…

If needed, remove the watchband and adapters first, to get free acces to backplate.

If the backplate is cleared, unscrew the watch back using a good quality philips screwdriver.

When removed the back, you see the back shock absorber, let’s see what lies underneath… Never turn around the watch or module!

The battery clasp can be released by pulling it loose with pointy tweezers or a small needle. Here you see a close up of such a clasp (not this Baby-G)

The empy batteries are collected a special chemical waist.

Get the same battery that’s removed. Baby-G use a lot of CR1616 and CR2025 batteries.



A combi of 2 batteries is also known, like this one. This one needed a SR1120W (391) and a SR626SW battery.



Use plastic tweezers to get the pbattery out of the package and to place in the module. Make sure the battery clasp is closed o.k.

On almost every Casio module you will find a contact with the letters AC (all clear). Use pointy metal tweezer to make contact between the AC contact and the top of the battery. Hold the tweezers about 2 seconds in place. This procedure is called the reset procedure.

Use some silicon based lubricant on the seal to keep it flexible and waterresistant. I use a lubricant tht is also used to lubricate bike parts. Use only a little bit.

The back absorber and the backplate can be put back in place. Always put the top of the back on the right place, else you can have water resistance problems and the alarm and EL won’t sometimes not work properly. It also looks not neat when the back is upside down Always apply the screws croswise to spread the force equally on the seal.

Check the function of the alarm sound and the EL backlight.

Set the watch to a reference time device. An atomic signal receiving clock or watch is of course prefered.


Cheers,

Sjors

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How to change a battery on a G-Shock

Here we have a dead DW-003S in desperate need of a new battery.

FIrst remove the watchband and face protector.

This model has three screws on each side and four screws that hold the back protector and back plate on the case. After unscrewing all screws, the back can be opened. Notice there are different screws (this model has 3 types). Remember where to put which screw back later. In the middle you see a little alarm spring. That spring is loose in the module. Under no circumstance turn around the module or you will loose that spring.

Here a close look at the alarm spring.

a very close look…

Carefully remove the back schock protector rubber, and voila!

The battery…

This is also waht you might find under a back plate.



The battery is hold down with a clasp. Use sharp point tweezers to unlock the clasp. A sharp pin or needle will work too.

Put the sharp point here (arrow) to unlock.

Carefully remove the battery and store it with your other empty batteries. Batteries are cstored hemical waste and need to be given to proper authorities for recycling or destruction.

Take a new, same type, battery with plastic tweezers and place it back in the module. Most G-Shock models use the CR2016.

Push the battery clasp in place with the tweezers. You will hear a click when it is closed properly.

Now the module needs to be reset. Use the sharp point tweezers to conect the AC contact with the back of the battery.

Take a little bit of silicone lubricat and rub it carefully on the rubber seal. This way the seal will stay flexible and water resistant.

Note that a lot of seals can only put back in the case one way. Some have a little lip, like this one. It need to be put in the little cut out at the bottom (see arrows).

Place the back the same way as you have found it. If you aren’t sure, firmly press the back to the case between thumb and indexfinger and turn around the module. The lettering must be according to it’s case position. If put upside down, it will not only be un-aestetic, but there is also a possability that the alarm and EL won’t work when the back is put up up-side-down.

Place the back plate (and the back protector) back on the case and place the screws back. Best is to do this crosway (as shown in the picture) to spread the forces on the seal.

If the four screws are in place, turn around the case and check the alarm and EL functions.

If everything works fine, screw back the other screws…

…when present, put back the face protector and put the watchband back in place.

Find a reliable clock or watch with precise time to adjust time and date.

Cheers,

Sjors

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