Siemens SIMATIC IPC277G Operating Instructions Manual page 50

Expanding and assigning parameters to the device
6.1 Open the device
Procedure - Opening the 12" to 24" multi-touch devices
Procedure - closing the device
To close the device, carry out the steps for opening the device in the reverse order.
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Unplug the marked three cables on the motherboard.
Remove the marked seven screws on the back of the
rear panel.
Lift up the device from the touch panel.
Unplug the marked three cables on the motherboard.
Operating Instructions, 08/2021, A5E50059956-AA
SIMATIC IPC277G