Step 1 Check the lens of the IPC.
If the IPC uses a non-infrared lens, replace it with an infrared lens.
Otherwise, you must manually adjust the focus of the IPC during the day and at night repeatedly. Use an infrared lens if infrared night vision surveillance is required.
If the IPC uses an infrared lens, contact your service provider for assistance.
Step 2 Check whether the fault is rectified.
If yes, no further operation is required.
If no, contact your service provider for assistance.