CITIZEN MG0000 - Manual (Page 13)

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(3) Charging will begin if the watch is properly connected to the communication unit. The
LED on the right side of the communication unit lights when charging begins, and goes
out when charging is completed (when the watch is fully charged).
(4) Sufficiently open the locking tab of the communication unit and remove the watch from
the communication unit.
* Approximately 5-6 hours is required for charging when the secondary battery is completely
drained.
* Try to recharge the watch before the secondary battery becomes completely drained. There is
no risk of overcharging no matter how long the watch is connected to the communication unit.
* When the LED does not light and the battery charge indicator of the watch does not indicate
that the watch is fully charged even if the watch has been attached to the communication unit,
the batteries of the communication unit are worn out. Replace all four of the batteries with
fresh batteries and repeat charging.
* Attempting to attach or remove the watch without opening the locking tab sufficiently may
cause the connection pins to become worn or damaged resulting in malfunction of the
communication unit.
Watch Display During Charging
Once charging begins, the watch automatically switches to
the system monitor mode (battery charge indicator) after the
diver mark in the lower left section of the watch display
flashes. ("CHRG" is displayed in the lower left section of
the display.)
* When the communication unit is connected to a PC with the USB cable, the watch displays
the USB communication display (data transfer standby display). Charging is performed while
the LED on the communication unit is lit even during data transfer with the PC using the USB
communication interface.
* When the watch has been charged to a certain extent (when all the sections of the battery
charge indicator are lit), although the diver mark remains flashing without the watch switching
to the system monitor mode, charging is still performed correctly even in this state.
* Although "CHK" may flash in the lower left section of the display during charging, charging is
performed correctly in this case as well. "CHK" is no longer displayed and the display returns
to normal when the watch is removed from the communication unit after charging is
completed.
* If the watch display is not showing before charging, simultaneously press buttons (A), (B), (C)
and (D) with the watch attached to the communication unit to perform the all reset procedure.
(Refer to the section on "
All Reset and Formatting Flash Memory" for information on the all
reset procedure.)
( C ) ( B )
( D ) ( A )