1. Before closing the lens cap, please make sure that the lens is at a certain distance from the lens cap and is not blocked. If there is a block, please press "F-" on the remote control to adjust the lens inward until you can slide the lens cover normally.
2. When you start to use the projector, please slide the lens cover to hide it first, please press "F+" on the remote control to adjust the lens towards the outside until the screen gets the clearest screen, completing the manual focus operation.
Note: Please do not slide the lens cover forcibly before adjusting the lens's correct position, otherwise, the lens may be scratched.
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