Site/lunitidal interval data list, Operation guide 2836 – G-Shock GL-220-1 User Manual

Page 5

Operation Guide 2836

Timekeeping

• Resetting the seconds to 00 while the current count is in the range of 30 to 59

causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to

00 without changing the minutes.

• With the 12-hour format, the P (PM) indicator appears on the display for times in the

range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without

any indicator.

• The year can be set in the range of 2000 to 2039.

• The watch’s built-in full automatic calendar automatically makes allowances for

different month lengths and leap years. Once you set the date, there should be no
reason to change it except when battery power drops to Level 4.

Backlight Precautions

• The electro-luminescent panel that provides illumination loses power after very long

use.

• The illumination provided by the backlight may be hard to see when viewed under

direct sunlight.

• The watch may emit an audible sound whenever the display is illuminated. This is

due to vibration of the EL panel used for illumination, and does not indicate
malfunction.

• The backlight automatically turns off whenever an alarm sounds.

• Frequent use of the backlight runs down the battery.

Auto light switch precautions

• Wearing the watch on the inside of your wrist and movement or vibration of your arm

can cause the auto light switch to activate and illuminate the display. To avoid
running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.

• Note that wearing the watch under your sleeve while the auto light switch is turned

on can cause frequent illumination of the display and can run down the battery.

More than 15 degrees
too high

• The backlight may not light if the face of the watch is

more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.

• The backlight turns off in about one second, even if you

keep the watch pointed towards your face.

• Static electricity or magnetic force can interfere with

proper operation of the auto light switch. If the backlight
does not light, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back
towards you again. If this does not work, drop your arm
all the way down so it hangs at your side, and then bring
it back up again.

• Under certain conditions, the backlight may not light until about one second after you

turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.

• You may notice a very faint clicking sound coming from the watch when it is shaken

back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.

Anchorage

–9.0

–8.0

149°W