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With this video we open a new section within the channel, which as you know is dedicated to the repair of RICOH brand equipment. The video is made with the intention of being a reference guide for the solution of the code SC 220, SC 221 which in the troubleshooting manual tells us that it is an error in the detection of the synchronization of the laser position either LD0 and LD1. The video is made based on the information in the RICOH manuals which are property of the same brand and are used to solve a real problem that occurs frequently. The information in these manuals as well as the RICOH products are property of the same brand. Protek makes this video in order to have a greater reach in the positioning of the same brand but is not the owner of the information and only made an analysis based on the information and the experience we have at Protek. The information in the video is directed to technical service people in order to solve problems with the end customer. The information is not directed to an end customer, if you have questions contact a trusted technician