CITIZEN MG0000 - Manual (Page 37)

When the watch has switched to the file error warning display, perform the garbage collection
procedure in the system monitor mode of the standard mode. The display returns to normal
following completion of garbage collection.
Abnormal Pressure Detection Error Warning
When abnormal atmosphere pressure is detected during use on land, or
when ascending to high locations more than 4000 m (13000 ft) above
sea level, "ERR" (Error) flashes in the lower left corner of the display.
The watch does not switch to the dive mode even if the water sensor
gets wet while this warning function is activated.
If "ERR" does not disappear from the display even after a long period of time, there may be a
problem with the pressure sensor. When this happens, discontinue using the watch and consult
a Citizen Service Center.
Water Sensor Check Warning
If the preliminary dive display continues to be displayed for more than 1
hour after the water sensor has gotten wet and the watch has switched
to the preliminary dive display in the dive mode, "CHK" (Check) flashes
in the lower left corner of the display to inform the wearer that the water
sensor should be checked.
* "CHK" also flashes when the watch returns to the normal display from any of
the correction states, when the watch is returned to the time mode of the
standard mode from the infrared communication mode, and when the water
sensor is operating during the all reset procedure.
The watch does not switch to the dive mode (water depth measurement display) when "CHK" is
flashing.
To check the sensor, remove any debris or moisture from the water sensor with a dry cloth. The
display returns to normal when the water sensor is canceled.
Ascent Rate Warning
When the ascent rate during scuba diving exceeds 18 m (60 ft)/min, the
ascent rate warning alarm sounds for 5 seconds and "SLOW" and an
illustration of a turtle are displayed at the bottom of the display.
The ascent rate warning alarm stops sounding when a proper ascent
rate is resumed.
* The ascent rate warning alarm does not sound during skin diving (continuous
diving for less than 3 minutes at a depth of 1 m or more).
Abnormal Depth Warning
When a sudden change in depth of more than 4 m (13 ft)/sec is
detected during diving, the watch assumes that the watch has reached
an abnormal depth. At this time, "ERR" and the diver mark are
alternately displayed in the lower left corner of the display.
Once "ERR" has been displayed during diving, it continues to be
displayed until the dive mode is terminated.
CAUTION
Avoid using the watch in environments where sea bottom drilling equipment or similar
machinery is in use. The vibrations from such equipment may cause a change in water
pressure of "4 m (13 ft) or more per second" to be locally and momentarily applied to the
pressure sensor of the watch, causing "ERR" to be displayed and preventing water depth
from being displayed correctly.
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