Riken Keiki GD-3EC, Technical Manual

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7. Maintenance 7-2 Maintenance mode
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Item No. Setting item LED display Details
2-8 Factory mode selection This is not normally used by the
user.
2-9 User mode selection Switches to user mode.
(Refer to ‘5-5 User mode’.)
7-2-2 Switching to maintenance mode
1 Hold down the MENU/ESC key (for approximately three
seconds) in detection mode.
The product switches to user mode.
2 Press the ▲ or ▼ key to select [1-3], then press the SET
key.
The product switches to maintenance mode.
3 Press the ▲ or ▼ key to select the required item number,
then press the SET key.
The details corresponding to the item number selected are displayed.
Set individual items.
Display example: With
environmental settings 1
selected