MWB-SH-e-1810.docx 2113.9 Replace Main BoardRelease 4 pcs screw from bottom of thescale by using cross screw driver.Open the top cover, the main board lie on topcover, use cross screw driver loose 4 screwfor main board, pull out all connector on themain board, then you can bring out mainboard carefully.Install the new main board, plug all connector at last,After check anything,try to turn on the power,if anything is OK,close the top cover,replace mainboard completely.13.10 Replace BatteryOpen battery compartment coverRemove the dry batteryInsert new batteries ,Lock thebattery cover again.