Door Open. Close It - Samsung ProXpress 402 Series Service Manual

4. Troubleshooting
► Error Code
S2-4120
► Error message

Door open. Close it.

► Symptom
Door is open or the cover open switch is defective.
► Troubleshooting method
1) Check if the front door is closed correctly.
2) Check if the rear door is closed correctly.
3) Check if the connection between the main board and HVPS board is correct.
4) Check if the cover open switch on HVPS board is operated properly. If it is defective, replace the HVPS
board(JC44-00197A).
(Refer to 3.3.5)
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