Riken Keiki GD-3EC, Technical Manual

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7. Maintenance 7-5 Setting environmental settings 1
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7-5-3 Date and time setting
Sets the date and time (year, month, date, hours, and minutes) for the internal clock.
1 Press the ▲ or ▼ key in maintenance mode to select [2-4],
then press the SET key.
2 Press the ▲ or ▼ key to select [2-4.A], then press the SET
key.
3 Press the ▲ or ▼ key to set the last two digits of the year,
then press the SET key.
The selected item (last two digits of the year) flashes.
4 Press the ▲ or ▼ key to set the month, then press the SET
key.
The selected item (month) flashes.
5 Press the ▲ or ▼ key to set the date, then press the SET
key.
The selected item (day) flashes.
6 Press the ▲ or ▼ key to set the hours (24-hour format),
then press the SET key.
The selected item (hour) flashes.
7 Press the ▲ or ▼ key to set the minutes, then press the
SET key.
The selected item (minutes) flashes.
Returns to the [2-4.A] display.