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Pressed state
Open state
Pic. 1-1
Step 2, check whether the guardrail buckle is loose or the pin cores are deformed.
A. Check the content: check whether side rail buckle is loose, or pin cores are deformed;
B. Check method: follow the connecting line under back board side rail, find the side rail adapter,
see pic.1-2;
C. Problem determination：the buckle is loose, as on pic.1-2 lock the buckle; pin cores are
deformed, using a flat-blade screwdriver rectify pin cores, make sure it's connected tightly with the
adapter;
D. Conclusion：after the above three steps, check the side rail control panel, if it still unresponsive,
move to the Step 3.
buckle
adapter
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