4-Side Keystone; Reset - YABER Pro U9 Manual Del Usuario

6.2 4-side Keystone：-40~40
Step 1: Press the button to select the [4-side Keystone] menu, then press
the [ OK ] bottom to enter the submenu.
Step 2: If the projection image shows as (1), press the button on the
remote or projector to increase the vertical parameter (-40~0), until to
achieve the projection image (2).
Step 3: If the projection image shows as (3), then press the button on the
remote or projector, and decrease the vertical parameter (0~40), until to
achieve the projection image (4).
(1)

6.3 Reset

Click the "reset", the parameters will be restored to default values.
Keystone Setting
4-corner keystone
4-style keystone
Reset
(2)
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(3)
EN
(4)