VEVOR V8V8C-CPR Bedienungsanleitung Seite 28

adapter
buckle
Pin core
Pic. 2-2
Step 3, Check if the controller plug is loose
A. Check the content: controller plug is loose;
B. Check method:
① Check if the controller clip on the bed frame under the back plate is loose or dislodged, see
pic.2-3;
② Check if the plug is loose;
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